Common use of Form of Equipment Notes Clause in Contracts

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANK, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997. SERIES [_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645. No. ____ Date: [__________, ____] $_______________________ INTEREST RATE MATURITY DATE [___________] [____________] FIRST SECURITY BANK, NATIONAL ASSOCIATION, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “Owner Trustee”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust Agreement”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “Original Amount”), together with interest on the amount of the Original Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Rate. The Original Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1, 1997, and thereafter on April 1 and October 1 of each year, to and including _______________. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANK, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 648 DATED AS OF SEPTEMBER 30NOVEMBER 26, 1997. SERIES [_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645N16648. No. ____ Date: [__________, ____] $_______________________ INTEREST RATE MATURITY DATE [___________] [____________] FIRST SECURITY BANK, NATIONAL ASSOCIATION, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “Owner Trustee”) under that certain Trust Agreement 645648, dated as of September 30November 26, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust Agreement”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “Original Amount”), together with interest on the amount of the Original Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Rate. The Original Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October April 1, 19971998, and thereafter on April October 1 and October April 1 of each year, to and including _______________. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANK, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 647 DATED AS OF SEPTEMBER 30NOVEMBER 24, 1997. SERIES [_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645N16647. No. ____ Date: [__________, ____] $_______________________ INTEREST RATE MATURITY DATE [___________] [____________] FIRST SECURITY BANK, NATIONAL ASSOCIATION, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “Owner Trustee”) under that certain Trust Agreement 645647, dated as of September 30November 24, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust Agreement”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “Original Amount”), together with interest on the amount of the Original Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Rate. The Original Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October April 1, 19971998, and thereafter on April October 1 and October April 1 of each year, to and including _______________. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANK, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 646 DATED AS OF SEPTEMBER 30NOVEMBER 21, 1997. SERIES [_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645N16646. No. ____ Date: [__________, ____] $_______________________ INTEREST RATE MATURITY DATE [___________] [____________] FIRST SECURITY BANK, NATIONAL ASSOCIATION, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “Owner Trustee”) under that certain Trust Agreement 645646, dated as of September 30November 21, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust Agreement”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “Original Amount”), together with interest on the amount of the Original Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Rate. The Original Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October April 1, 19971998, and thereafter on April October 1 and October April 1 of each year, to and including _______________. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANKUNITED AIRLINES, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES [_____[ ] LIMITED RECOURSE EQUIPMENT NOTE DUE [____[ ] ISSUED IN CONNECTION WITH THE BOEING [BOEING][EMBRAER] MODEL 737-524 [ ] AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645. N[ ] No. ____ Date: [__________[ , ____] $_______________________ INTEREST RATE MATURITY DATE [___________[ ] [____________[ ] FIRST SECURITY BANKUNITED AIRLINES, NATIONAL ASSOCIATIONINC., not in its individual capacity but solely as Owner Trustee a Delaware corporation (herein in such capacity called the “Owner Trustee”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust AgreementOwner”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ $ (the “Original Amount”), together with interest on the amount of the Original Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Rate. The Original Amount of this Equipment Note shall be due and payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual semi-annual installments commencing on October 1, 1997, [ ]1 and thereafter on April [May 1 and October 1 November 1]2 of each year, to and including _______________[ ]. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “"ACT”"), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANK, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 [___] DATED AS OF SEPTEMBER 30[_______________, 199720__]. SERIES [_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 [_______] AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645N[_____]. No. ____ Date: [__________, ____] $_______________________ INTEREST RATE MATURITY DATE [___________] [____________] FIRST SECURITY BANK, NATIONAL ASSOCIATION, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “"Owner Trustee”") under that certain Trust Agreement 645[___], dated as of September 30[____________, 199720__], between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “"Trust Agreement”"), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “"Original Amount”"), together with interest on the amount of the Original Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Rate. The Original Amount of this Equipment Note shall be [payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. .] [paid in full on _______.] Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1[_____________], 199720[__], and thereafter on April 1 [_______] and October 1 [_______] of each year, to and including [_______________]. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANKUS AIRWAYS, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES [_____A][B][C] LIMITED RECOURSE EQUIPMENT NOTE DUE [____[ ] ISSUED IN CONNECTION WITH THE BOEING AIRBUS MODEL 737-524 [ ] AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645. N[ ] No. ____ Date: [__________[ , ____] $_______________________ INTEREST RATE MATURITY DATE [___________[ ] [____________[ ] FIRST SECURITY BANKUS AIRWAYS, NATIONAL ASSOCIATIONINC., not in its individual capacity but solely as Owner Trustee a Delaware corporation (herein in such capacity called the “Owner Trustee”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust AgreementOwner”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ $ (the “Original Amount”), together with interest on the amount of the Original Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Rate. The Original Amount of this Equipment Note shall be due and payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual semi-annual installments commencing on October [ ] 1, 1997, 201[ ] and thereafter on April 1 and October 1 of each year, to and including _______________[ ]. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATESTATE OR OTHER JURISDICTION. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE OFFERED FOR SALE OR SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE OR OTHER LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS REGISTRATION REQUIREMENTS IS AVAILABLE. FIRST SECURITY BANKIN ADDITION, NATIONAL ASSOCIATIONTHIS EQUIPMENT NOTE IS SUBJECT TO RESTRICTIONS ON TRANSFER PURSUANT TO THE PARTICIPATION AGREEMENT REFERRED TO HEREIN. AMERICAN AIRLINES, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES 2019-1 [___][XXX.XX.] EQUIPMENT NOTE DUE _____] LIMITED RECOURSE EQUIPMENT NOTE DUE [__ __, 20__] _ ISSUED IN CONNECTION WITH THE BOEING [AIRBUS] [BOEING] [EMBRAER] MODEL 737-524 [MODEL] (GENERIC MODEL [GENERIC MODEL]) AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645[REG. NO.] No. .____ Date: [__________, __,__] $________________ DEBT RATE MATURITY DATE [________ INTEREST RATE MATURITY DATE []% ___________] [_ ___, 20_________] FIRST SECURITY BANK_ AMERICAN AIRLINES, NATIONAL ASSOCIATIONINC. (together with its successors and permitted assigns, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “Owner TrusteeCompany”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust Agreement”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum amount of $________________ Dollars (the “Original Amount”), together with interest $_________) [on __________]8 [in installments on the Payment Dates set forth in Schedule I hereto, each 8 To be inserted in non-installment Equipment Notes. Indenture and Security Agreement (American Airlines 2019-1 Aircraft EETC) [Reg. No.] such installment to be in an amount computed by multiplying the original principal amount of this Equipment Note by the Original Amount percentage set forth in Schedule I hereto opposite the Payment Date on which such installment is due,]9 and to pay, on each Payment Date, interest in arrears on the principal amount remaining unpaid from time to time from the date hereof, or from the most recent date to which interest hereon has been paid or duly provided for, until paid in full at a rate per annum (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Rate. The Original Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1, 1997, and thereafter on April 1 and October 1 of each year, to and including _______________Rate shown above. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount principal amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day with the same force and effect as if made on such scheduled date, and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during from and after such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *scheduled date.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATESTATE OR OTHER JURISDICTION. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE OFFERED FOR SALE OR SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE OR OTHER LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS REGISTRATION REQUIREMENTS IS AVAILABLE. FIRST SECURITY BANKIN ADDITION, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST THIS EQUIPMENT NOTE IS SUBJECT TO RESTRICTIONS ON TRANSFER PURSUANT TO THE PARTICIPATION AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997REFERRED TO HEREIN. JETBLUE AIRWAYS CORPORATION SERIES 2019-1[__]-[_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____MATURITY DATE] ISSUED IN CONNECTION WITH THE BOEING AIRBUS MODEL 737A321-524 231 (GENERIC MANUFACTURER AND MODEL AIRBUS MODEL A321) AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645. N976JT No. ____ Date: [__________, ____] $_______________________ INTEREST RATE MATURITY DATE [Date: ___________] [_ DEBT RATE MATURITY DATE Indenture and Security Agreement (2019-1 EETC) N976JT JETBLUE AIRWAYS CORPORATION (together with its successors and permitted assigns, “Company”) hereby promises to pay to ____________] FIRST SECURITY BANK, NATIONAL ASSOCIATION, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “Owner Trustee”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust Agreement”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum amount of __________________________ Dollars ($____________ (the “Original Amount”), together with interest ) [on _______]1 [in installments on the Payment Dates set forth in Schedule I hereto, each such installment to be in an amount computed by multiplying the original principal amount of this Equipment Note by the Original Amount percentage set forth in Schedule I hereto opposite the Payment Date on which such installment is due,]2 and to pay interest in arrears on each Payment Date at the Debt Rate shown above on the principal amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof hereof, or from the most recent date to which interest hereon has been paid or duly provided for, until paid in full at a rate per annum equal to the Debt Ratefull. The Original Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1, 1997, and thereafter on April 1 and October 1 of each year, to and including _______________. [Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount principal amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Note.]3 Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day with the same force and effect as if made on such scheduled date, and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during from and after such extensionscheduled date. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645Security Agreement (N976JT), dated as of September 30November 12, 19972019, between the Owner Trustee Company and Wilmington Trust Company Company, as Loan Trustee (the “MortgageeLoan Trustee”), as the same may be amended amended, supplemented or supplemented otherwise modified from time to timetime in accordance with its terms. All other capitalized terms used in this Equipment Note and not defined herein herein, unless the context otherwise requires, shall have the respective meanings assigned set forth or incorporated by reference, and shall be construed and interpreted in the Trust manner described, in the Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Past Due Rate (and not the Debt Rate) (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue principal amount and (to the extent permitted by applicable law) Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest interest, and any other amounts payable hereunder not paid when due for any period during which are the same is overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid in the manner provided herein or in the Indenture when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this 1 To be inserted in non-installment Equipment Note shall Notes. 2 To be subject to adjustments to the extent, inserted in installment Equipment Notes. 3 To be inserted in installment Equipment Notes. Indenture and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, MakeSecurity Agreement (2019-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b1 EETC) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. N976JT There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee Loan Trustee, or at the office of any successor trustee, in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount principal amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the MortgageeLoan Trustee, or as otherwise provided in the Trust Indenture. Company shall not have any responsibility for the distribution of any such payment to Noteholder of this Equipment Note. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the this Equipment Note shall be surrendered promptly thereafter to the Mortgagee Loan Trustee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, including the subordination provisions referred to below, each payment of the Original Amountan installment of principal amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, : first, to the payment of accrued interest on this Equipment Note (as well as any interest on (i) any overdue Original Amountprincipal amount, and (ii) to the extent permitted by applicable law, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and any other overdue amounts hereunder) to the date of such payment, ; second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other with respect to this Equipment Note; third, to the payment of the principal amount of this Equipment Note (or portion thereof) then due hereunder or under the Trust Indenturehereunder, if any; and fourth, the balance, if any, remaining thereafter, thereafter to the payment of installments of the Original Amount principal amount of this Equipment Note (or portion thereof) remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee Company pursuant to the terms of the Trust Indenture. The Trust Indenture Estate Collateral is held by the Mortgagee Loan Trustee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture, the Related Indentures, the Participation Agreement, the other Operative Documents and the Pass Through Documents. Reference is hereby made to the Trust Indenture Indenture, the Related Indentures, the Participation Agreement, the other Operative Documents and the Pass Through Documents for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note (including as a “Related Equipment Note” under each Related Indenture) and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture Indenture, the Related Indentures, the Participation Agreement, the other Operative Documents and the Pass Through Documents each holder hereof agrees by its acceptance of this Equipment Note. Indenture and Security Agreement (2019-1 EETC) N976JT As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like an equal aggregate Original Amount principal amount of Equipment Notes of the same Series of different authorized denominations, as requested by the holder surrendering the same. Prior to the due presentment for registration of transfer of this Equipment Note, the Owner Company and Loan Trustee shall deem and the Mortgagee shall treat the person Person in whose name this Equipment Note is registered on the Equipment Note Register as the absolute owner and holder hereof for the purpose of receiving all amounts payable with respect to this Equipment Note and for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Company nor Loan Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 4.02 of the Trust Indenture. [This Equipment Note is subject to certain restrictions set forth in Sections 4.01(a)(ii) and 4.01(a)(iii) of the Intercreditor Agreement, as further specified in Section 2.07 of the Indenture, to all of which terms and conditions in the Intercreditor Agreement each holder hereof agrees by its acceptance of this Equipment Note. The holder hereof, by its acceptance of this Equipment Note, agrees that no payment or distribution shall be made on or in respect of the Secured Obligations (as defined in the Indenture) or the Secured Obligations (as defined in any Related Indenture) owed to such holder, including, without limitation, any payment or distribution of cash, property or securities after the occurrence of any of the events referred to in Section 4.01(f) of the Indenture or after the commencement of any proceedings of the type referred to in Section 4.01 (g), (h) or (i) of the Indenture, except, in each case, as expressly provided in Article III of the Indenture or Article III of the applicable Related Indenture, as appropriate. The indebtedness evidenced by this Equipment Note is, is[,]4 [(i) to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series AA Equipment Notes]5 [Series AA Equipment Notes and Series A Equipment Notes]1 Notes]6 [Series AA 4 To be inserted in the case of a Series AA Equipment Note. 5 To be inserted in the case of a Series A Equipment Note. 6 To be inserted in the case of the Series of Additional Series Equipment Notes ranked most senior in priority of payment among all Series of Additional Series Equipment Notes. Indenture and Security Agreement (2019-1 EETC) N976JT Equipment Notes, Series B A Equipment Notes],2 Notes and [ ]7]8, and certain other Secured Obligations, and (ii)]9 to the extent and in the manner provided in each Related Indenture, subordinate and subject in right of payment to the prior payment in full under such Related Indenture of the “Secured Obligations” in respect of the “Equipment Notes” issued under such Related Indenture, and this Equipment Note is issued subject to such provisions. The Note Holder Noteholder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs Loan Trustee or the Mortgagee Related Loan Trustee under the applicable Related Indenture, as appropriate, on his such Noteholder’s behalf to take such any action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture or the applicable Related Indenture and (c) appoints Loan Trustee or the Mortgagee his Related Loan Trustee under the applicable Related Indenture, as appropriate, as such Noteholder’s attorney-in-fact for such purpose.]3 purpose. Without limiting the foregoing, the holder hereof, by its acceptance of this Equipment Note, agrees that if such holder, in its capacity as a Noteholder, receives any payment or distribution on any Secured Obligation in respect of this Equipment Note that it is not entitled to receive under Section 2.13 or Article III of the Indenture, it shall hold any amount so received in trust for Loan Trustee and forthwith turn over such amount to Loan Trustee in the form received to be applied as provided in Article III of the Indenture. Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee Loan Trustee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. 7 To insert each Series of Additional Series Equipment Notes that rank senior in priority of payment to the Series of Additional Series Equipment Notes being issued. 8 To be inserted in the case of each Series of Additional Series Equipment Notes other than the Series of Additional Series Equipment Notes ranked most senior in priority of payment among all Series of Additional Series Equipment Notes. 9 To be inserted in the case of a Series A Equipment Note or an Additional Series Equipment Note. Indenture and Security Agreement (2019-1 EETC) N976JT THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS LAW OF THE STATE OF NEW YORK. * * *, INCLUDING ALL MATTERS OF CONSTRUCTION, VALIDITY AND PERFORMANCE.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “"ACT”"), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANKCONTINENTAL AIRLINES, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES [_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 [_______] AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645N[_____]. No. ____ Date: [__________, ____] $_______________________ INTEREST RATE MATURITY DATE [___________] [____________] FIRST SECURITY BANKCONTINENTAL AIRLINES, NATIONAL ASSOCIATIONINC., not in its individual capacity but solely as Owner Trustee a Delaware corporation (herein in such capacity called the “Owner Trustee”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust Agreement”"Owner"), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “"Original Amount”"), together with interest on the amount of the Original Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Rate. The Original Amount of this Equipment Note shall be [payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. .] [paid in full on ____] Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1[______, 1997, __ 20__,] and thereafter on April 1 [______] and October 1 [______] of each year, to and including [_______________. .] Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANKUS AIRWAYS, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES [_____A][B][C] LIMITED RECOURSE EQUIPMENT NOTE DUE [____[ ] ISSUED IN CONNECTION WITH THE BOEING AIRBUS MODEL 737-524 [ ] AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645. N[ ] No. ____ Date: [__________[ , ____] $_______________________ INTEREST RATE MATURITY DATE [___________[ ] [____________[ ] FIRST SECURITY BANKUS AIRWAYS, NATIONAL ASSOCIATIONINC., not in its individual capacity but solely as Owner Trustee a Delaware corporation (herein in such capacity called the “Owner Trustee”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust AgreementOwner”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ $ (the “Original Amount”), together with interest on the amount of the Original Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Rate. The Original Amount of this Equipment Note shall be due and payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual semi-annual installments commencing on October [ ] 1, 1997, 201[ ] and thereafter on April 1 June 3 and October 1 December 3 of each year, to and including _______________[ ]. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “"ACT”"), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANK, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 (US AIRWAYS, INC. TRUST NO. N___U_) DATED AS OF SEPTEMBER 30_______ __, 1997____. SERIES [_____] LIMITED NON-RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 AIRBUS A3__-___ AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645_____. No. .____ Date: [__________, __,__] $_______________________ INTEREST RATE MATURITY DATE [___________----] [____________-----------,-----] FIRST SECURITY BANK, NATIONAL ASSOCIATION, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “"Owner Trustee”") under that certain Trust Agreement 645(US Airways, Inc. Trust No. N___U_), dated as of September 30_________ __, 1997____, between the Owner Participant named therein and First Security Bank, National Association the Owner Trustee (herein as such Trust Agreement may be supplemented or amended from time to time called the “"Trust Agreement”"), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “Original "Principal Amount”"), together with interest on the amount of the Original Principal Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt RateInterest Rate indicated above, [as adjusted in accordance with the terms in Schedule I to the Trust Indenture (as defined below)](1). The Original Principal Amount of this Equipment Note shall be payable in installments on the dates set forth and in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note installments as set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual semi- annual installments commencing on October 1__________, 1997, _____ and thereafter on April 1 March 20 and October 1 September 20 of each year, to and including __________, _____. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Principal Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, Day then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day with the same force and effect as if made on such scheduled date and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during from and after such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *scheduled date.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATESTATE OR OTHER JURISDICTION. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE OFFERED FOR SALE OR SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE OR OTHER LAWS OR AN EXEMPTION EXEMPTIONS FROM SUCH REGISTRATIONS IS REGISTRATION REQUIREMENTS ARE AVAILABLE. FIRST SECURITY BANKIN ADDITION, NATIONAL ASSOCIATIONTHIS EQUIPMENT NOTE IS SUBJECT TO RESTRICTIONS ON TRANSFER PURSUANT TO THE PARTICIPATION AGREEMENT REFERRED TO HEREIN. AMERICAN AIRLINES, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES [_____2016-3[ ]-[XXX.XX.] LIMITED RECOURSE EQUIPMENT NOTE DUE [, 20____] _ ISSUED IN CONNECTION WITH THE BOEING [AIRBUS] [BOEING] [EMBRAER] MODEL 737-524 [MODEL] (GENERIC MODEL [GENERIC MODEL]) AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645[REG. NO.] No. .____ Date: [__________, __,__] $_______________________ INTEREST DEBT RATE MATURITY DATE [___________] [____________] FIRST SECURITY BANK, NATIONAL ASSOCIATION, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “Owner Trustee”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust Agreement”), hereby promises to pay to ]% _____________,20______ AMERICAN AIRLINES, INC. (together with its successors and permitted assigns, the “Company”) hereby promises to pay to , or the registered assignee thereof, the principal sum amount of $____________ Dollars (the “Original Amount”), together with interest $ ) [on ]7 [in installments on the Payment Dates set forth in Schedule I hereto, each such installment to be in an amount computed by multiplying the original principal amount of this Equipment Note by the Original Amount percentage set forth in Schedule I hereto opposite 7 To be inserted in non-installment Equipment Notes. Indenture and Security Agreement (American Airlines 2016-3 Aircraft EETC) [Reg. No.] the Payment Date on which such installment is due,]8 and to pay, on each Payment Date, interest in arrears on the principal amount remaining unpaid from time to time from the date hereof, or from the most recent date to which interest hereon has been paid or duly provided for, until paid in full at a rate per annum (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt RateRate shown above. The Original Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1, 1997, and thereafter on April 1 and October 1 of each year, to and including _______________. [Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount principal amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Note.]9 Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day with the same force and effect as if made on such scheduled date, and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during from and after such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *scheduled date.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANKUNITED AIRLINES, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES [_____[ ] LIMITED RECOURSE EQUIPMENT NOTE DUE [____[ ] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 [ ] AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645. N[ ] No. ____ Date: [__________[ , ____] $_______________________ INTEREST RATE MATURITY DATE [___________[ ] [____________[ ] FIRST SECURITY BANKUNITED AIRLINES, NATIONAL ASSOCIATIONINC., not in its individual capacity but solely as Owner Trustee a Delaware corporation (herein in such capacity called the “Owner Trustee”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust AgreementOwner”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ $ (the “Original Amount”), together with interest on the amount of the Original Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Rate. The Original Amount of this Equipment Note shall be due and payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual semi-annual installments commencing on October 1, 1997, [ ]5 and thereafter on April [March 1 and October 1 September 1]6 of each year, to and including _______________[ ]. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANKTRUST INDENTURE 12-2 BACK CONTINENTAL AIRLINES, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES [_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 [_____] AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645. N[_____] No. ____ Date: [__________, ____] $_______________________ INTEREST RATE MATURITY DATE [___________] [____________] FIRST SECURITY BANKCONTINENTAL AIRLINES, NATIONAL ASSOCIATIONINC., not in its individual capacity but solely as Owner Trustee a Delaware corporation (herein in such capacity called the “Owner Trustee”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust AgreementOwner”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “Original Amount”), together with interest on the amount of the Original Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Rate. The Original Amount of this Equipment Note shall be due and payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual semi-annual installments commencing on October 1[______ __, 1997, 20__,]1 and thereafter on [April 1 29 and October 1 29]2 of each year, to and including [_______________]. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “"ACT”"), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANK, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 ___ DATED AS OF SEPTEMBER 30_______________, 1997. SERIES [_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING EMBRAER MODEL 737-524 EMB-145 AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645N_____. No. ____ Date: [__________, ____] $________________________ INTEREST RATE MATURITY DATE [___________] ___________ [____________] FIRST SECURITY BANK, NATIONAL ASSOCIATION, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “"Owner Trustee”") under that certain Trust Agreement 645___, dated as of September 30____________, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “"Trust Agreement”"), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “"Original Amount”"), together with interest on the amount of the Original Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Rate. The Original Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual quarterly installments commencing on October 1December 24, 1997, and thereafter on April 1 March 24, June 24, September 24 and October 1 December 24 of each year, to and including _______________. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “"ACT”"), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANK, NATIONAL ASSOCIATIONWILMINGTON TRUST COMPANY, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 [GPA 1989 BN-11] DATED AS OF SEPTEMBER 30DECEMBER 19, 19971989, AS AMENDED. SERIES [_____A/B/C/D] LIMITED NON-RECOURSE EQUIPMENT NOTE DUE [____[ ] ISSUED IN CONNECTION WITH THE BOEING MODEL 737ONE AIRBUS 320-524 231 AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645. N632AW No. ____ $ Date: [__________[ , ____1997] $_______________________ INTEREST ------------ ------------------- -------- DEBT RATE MATURITY DATE [___________--------- ------------- [ ] [____________[ , ] FIRST SECURITY BANK, NATIONAL ASSOCIATION--------- ------- --- WILMINGTON TRUST COMPANY, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “"Owner Trustee”") under that certain Trust Agreement 645[GPA 1989 BN-11], dated as of September 30December 19, 19971989, as amended, between the Owner Participant named therein and First Security Bank, National Association Wilmington Trust Company (herein as such Trust Agreement may be supplemented or amended from time to time called the “"Trust Agreement”"), hereby promises to pay to __________________Fleet National Bank, as Subordination Agent under the Intercreditor Agreement, or the registered assignee thereof, the principal sum of $____________ (the “Original "Principal Amount”"), together with interest on the amount of the Original Principal Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt RateRate indicated above. The Original Principal Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Principal Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1July 2, 1997, and thereafter on April 1 July 2 and October 1 January 2 of each year, to and including ___________, ____. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “"ACT”"), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANKUS AIRWAYS, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES [_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 AIRBUS A___-___ - AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645_____. No. .____ Date: [__________, __,__] $_______________________ INTEREST RATE MATURITY DATE [___________] [____________, ____] FIRST SECURITY BANKUS AIRWAYS, NATIONAL ASSOCIATION, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “Owner Trustee”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust Agreement”)INC., hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “Original "Principal Amount”"), together with interest on the amount of the Original Principal Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt RateInterest Rate indicated above, as adjusted in accordance with the terms in Schedule I to the Trust Indenture. The Original Principal Amount of this Equipment Note shall be payable in installments on the dates set forth and in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note installments as set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual semi-annual installments commencing on October 1_______ __, 1997200_, and thereafter on April March 1 and October 1 of September 1of each year, to and including _______ ________, 200_. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Principal Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, Day then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day with the same force and effect as if made on such scheduled date and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during from and after such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *scheduled date.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANKTRUST INDENTURE 14-1 UNITED AIRLINES, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES [_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING [BOEING/EMBRAER] MODEL 737-524 [_____] AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645. N[_____] No. ____ Date: [__________, ____] $_______________________ INTEREST RATE MATURITY DATE [___________] [____________] FIRST SECURITY BANKUNITED AIRLINES, NATIONAL ASSOCIATIONINC., not in its individual capacity but solely as Owner Trustee a Delaware corporation (herein in such capacity called the “Owner Trustee”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust AgreementOwner”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “Original Amount”), together with interest on the amount of the Original Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Rate. The Original Amount of this Equipment Note shall be due and payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual semi-annual installments commencing on October 1[______ __, 1997, 20__,]1 and thereafter on [April 1 11 and October 1 11]2 of each year, to and including [_______________]. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATESTATE OR OTHER JURISDICTION. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE OFFERED FOR SALE OR SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE OR OTHER LAWS OR AN EXEMPTION EXEMPTIONS FROM SUCH REGISTRATIONS IS REGISTRATION REQUIREMENTS ARE AVAILABLE. FIRST SECURITY BANKIN ADDITION, NATIONAL ASSOCIATIONTHIS EQUIPMENT NOTE IS SUBJECT TO RESTRICTIONS ON TRANSFER PURSUANT TO THE PARTICIPATION AGREEMENT REFERRED TO HEREIN. AMERICAN AIRLINES, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES 2014-1[ ][_____XXX.XX.] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] , 20 ISSUED IN CONNECTION WITH THE BOEING [AIRBUS] [BOEING] MODEL 737-524 [MODEL] (GENERIC MODEL [GENERIC MODEL]) AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645[REG. NO.] No. .____ Date: [__________, __,__] $_____________________ DEBT RATE MATURITY DATE [ ]% , 20___ INTEREST RATE MATURITY DATE [___________] [____________] FIRST SECURITY BANKAMERICAN AIRLINES, NATIONAL ASSOCIATIONINC. (together with its successors and permitted assigns, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “Owner TrusteeCompany”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust Agreement”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum amount of $____________ Dollars (the “Original Amount”), together with interest $ ) [on ]7 [in installments on the Payment Dates set forth in Schedule I hereto, each such installment to be in an amount computed by multiplying the original principal amount of this Equipment Note by the Original Amount percentage set forth in Schedule I hereto opposite the Payment Date on which such installment is due,]8 and to pay, on each Payment Date, 7 To be inserted in non-installment Equipment Notes. 8 To be inserted in installment Equipment Notes. Indenture and Security Agreement (American Airlines 2014-1 Aircraft EETC) [Reg. No.] interest in arrears on the principal amount remaining unpaid from time to time from the date hereof, or from the most recent date to which interest hereon has been paid or duly provided for, until paid in full at a rate per annum (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt RateRate shown above. The Original Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1, 1997, and thereafter on April 1 and October 1 of each year, to and including _______________. [Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount principal amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Note.]9 Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day with the same force and effect as if made on such scheduled date, and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during from and after such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *scheduled date.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “"ACT”"), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANK, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 [___] DATED AS OF SEPTEMBER 30[_______________, 199720___]. SERIES [_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 [_______] AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645N[_____]. No. ____ Date: [[ __________, 20_____ ] $_______________________ INTEREST RATE MATURITY DATE [_____________] [_____________] FIRST SECURITY BANK, NATIONAL ASSOCIATION, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “"Owner Trustee”") under that certain Trust Agreement 645[___], dated as of September 30[____________, 199720___], between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “"Trust Agreement”"), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “"Original Amount”"), together with interest on the amount of the Original Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Rate. The Original Amount of this Equipment Note shall be [payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. .] [paid in full on ____________.] Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1[_____________, 199720___], and thereafter on April 1 [_______] and October 1 [_______] of each year, to and including [_______________]. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “"ACT”"), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANK, NATIONAL ASSOCIATIONWILMINGTON TRUST COMPANY, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 [GPA 1990 AWA-16] DATED AS OF SEPTEMBER 3021, 19971990, AS AMENDED. SERIES [A/B/C/D/E] NON-RECOURSE EQUIPMENT NOTE DUE [ ] ISSUED IN CONNECTION WITH ONE AIRBUS 320-000 XXXXXXXX XXXXXXX XXXXXX XXXXXX XXXISTRATION NUMBER N637AW. No._____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645. No. ____ Date: [__________, ____1996] $_______________________ INTEREST DEBT RATE MATURITY DATE [___________] [_________,___] FIRST SECURITY BANK, NATIONAL ASSOCIATIONWILMINGTON TRUST COMPANY, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “"Owner Trustee”") under that certain Trust Agreement 645[GPA 1990 AWA-16], dated as of September 3021, 19971990, as amended, between the Owner Participant named therein and First Security Bank, National Association Wilmington Trust Company (herein as such Trust Agreement may be supplemented or amended from time to time called the “"Trust Agreement”"), hereby promises to pay to __________________Fleet National Bank, as Subordination Agent under the Intercreditor Agreement, or the registered assignee thereof, the principal sum of $____________ (the “Original "Principal Amount”"), together with interest on the amount of the Original Principal Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt RateRate indicated above. The Original Principal Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Principal Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual semi-annual installments commencing on October 1January 2, 1997, and thereafter Trust Indenture on April 1 July 2 and October 1 January 2 of each year, to and including ___________, ____. Notwithstanding the foregoingforegoing or anything to the contrary contained herein, (i) the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Principal Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, ; and (ii) if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “"ACT”"), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANK, NATIONAL ASSOCIATIONWILMINGTON TRUST COMPANY, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 [GPA 1989 BN-8] DATED AS OF SEPTEMBER 30DECEMBER 19, 19971989, AS AMENDED. SERIES [A/B/C/D] NON-RECOURSE EQUIPMENT NOTE DUE [ ] ISSUED IN CONNECTION WITH ONE AIRBUS 320-000 XXXXXXXX XXXXXXX XXXXXX XXXXXX REGISTRATION NUMBER N627AW No._____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645. No. ____ Date: [__________, ____1997] $_______________________ INTEREST DEBT RATE MATURITY DATE [___________] [_________,___] FIRST SECURITY BANK, NATIONAL ASSOCIATIONWILMINGTON TRUST COMPANY, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “"Owner Trustee”") under that certain Trust Agreement 645[GPA 1989 BN-8], dated as of September 30December 19, 19971989, as amended, between the Owner Participant named therein and First Security Bank, National Association Wilmington Trust Company (herein as such Trust Agreement may be supplemented or amended from time to time called the “"Trust Agreement”"), hereby promises to pay to __________________Fleet National Bank, as Subordination Agent under the Intercreditor Agreement, or the registered assignee thereof, the principal sum of $____________ (the “Original "Principal Amount”"), together with interest on the amount of the Original Principal Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt RateRate indicated above. The Original Principal Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Principal Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1July 2, 1997, and thereafter on April 1 July 2 and October 1 January 2 of each year, to and including ___________, ____. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “"ACT”"), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANKUS AIRWAYS, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES [_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 AIRBUS A___-___ - AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645_____. No. .____ Date: [__________, __,__] $_______________________ INTEREST RATE MATURITY DATE [___________] [__________, ____] FIRST SECURITY BANKUS AIRWAYS, NATIONAL ASSOCIATION, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “Owner Trustee”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust Agreement”)INC., hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “Original "Principal Amount”"), together with interest on the amount of the Original Principal Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt RateInterest Rate indicated above[, as adjusted in accordance with the terms in Schedule I to the Trust Indenture]1. The Original Principal Amount of this Equipment Note shall be payable in installments on the dates set forth and in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note installments as set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual semi-annual installments commencing on October 1_______ __, 1997200_, and thereafter on April 1 March 20 and October 1 September 20 of each year, to and including _______ ________, 200_. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Principal Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, Day then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day with the same force and effect as if made on such scheduled date and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during from and after such extensionscheduled date. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may ------------------- 1 To be amended or supplemented from time to time. All other capitalized terms used in this inserted for Series C Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *only

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “"ACT”"), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANKCONTINENTAL AIRLINES, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES [_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 _______ AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645N_____. No. ____ Date: [__________, ____] $_______________________ INTEREST RATE MATURITY DATE ------------- ------------- [___________] [____________] FIRST SECURITY BANKCONTINENTAL AIRLINES, NATIONAL ASSOCIATIONINC., not in its individual capacity but solely as Owner Trustee a Delaware corporation (herein in such capacity called the “Owner Trustee”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust Agreement”"Owner"), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “"Original Amount”"), together with interest on the amount of the Original Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Rate. The Original Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1______, 1997__ 199_, and thereafter on April 1 [______] and October 1 [______] of each year, to and including _______________. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANKUS AIRWAYS, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES [_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING AIRBUS MODEL 737-524 [_____] AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645. N[_____] No. ____ Date: [__________, ____] $_______________________ INTEREST RATE MATURITY DATE [___________] [____________] FIRST SECURITY BANKUS AIRWAYS, NATIONAL ASSOCIATIONINC., not in its individual capacity but solely as Owner Trustee a Delaware corporation (herein in such capacity called the “Owner Trustee”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust AgreementOwner”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “Original Amount”), together with interest on the amount of the Original Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Rate. The Original Amount of this Equipment Note shall be due and payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual semi-annual installments commencing on October 1April 22, 1997, 2011 and thereafter on April 1 22 and October 1 22 of each year, to and including [_______________]. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATESTATE OR OTHER JURISDICTION. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE OFFERED FOR SALE OR SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE OR OTHER LAWS OR AN EXEMPTION EXEMPTIONS FROM SUCH REGISTRATIONS IS REGISTRATION REQUIREMENTS ARE AVAILABLE. FIRST SECURITY BANKIN ADDITION, NATIONAL ASSOCIATIONTHIS EQUIPMENT NOTE IS SUBJECT TO RESTRICTIONS ON TRANSFER PURSUANT TO THE PARTICIPATION AGREEMENT REFERRED TO HEREIN. AMERICAN AIRLINES, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES [_____2017-2[ ]-[XXX.XX.] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] , 20 ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 [MODEL] (GENERIC MODEL [GENERIC MODEL]) AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645[REG. NO.] No. ____ Date: [__________[ , ____] $_______________________ INTEREST $ DEBT RATE MATURITY DATE [ ]% , 20 Indenture and Security Agreement (American Airlines 2017-2 Aircraft EETC) [___________Reg. No.] [____________] FIRST SECURITY BANKAMERICAN AIRLINES, NATIONAL ASSOCIATIONINC. (together with its successors and permitted assigns, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “Owner TrusteeCompany”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust Agreement”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum amount of $____________ Dollars (the “Original Amount”), together with interest $ ) [on ]3 [in installments on the Payment Dates set forth in Schedule I hereto, each such installment to be in an amount computed by multiplying the original principal amount of this Equipment Note by the Original Amount percentage set forth in Schedule I hereto opposite the Payment Date on which such installment is due,]4 and to pay, on each Payment Date, interest in arrears on the principal amount remaining unpaid from time to time from the date hereof, or from the most recent date to which interest hereon has been paid or duly provided for, until paid in full at a rate per annum (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt RateRate shown above. The Original Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1, 1997, and thereafter on April 1 and October 1 of each year, to and including _______________. [Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount principal amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Note.]5 Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day with the same force and effect as if made on such scheduled date, and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during from and after such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *scheduled date.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATESTATE OR OTHER JURISDICTION. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE OFFERED FOR SALE OR SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE OR OTHER LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS REGISTRATION REQUIREMENTS IS AVAILABLE. FIRST SECURITY BANKIN ADDITION, NATIONAL ASSOCIATIONTHIS EQUIPMENT NOTE IS SUBJECT TO RESTRICTIONS ON TRANSFER PURSUANT TO THE PARTICIPATION AGREEMENT REFERRED TO HEREIN. DELTA AIR LINES, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES 2020-1[__]-[_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____MATURITY DATE] Indenture and Security Agreement (2020-1 EETC) N826DN ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 932ER (GENERIC MANUFACTURER AND MODEL BOEING MODEL 737-900) AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645. N826DN No. ____ Date: [__________, _ Date: ____] $____ DEBT RATE MATURITY DATE DELTA AIR LINES, INC. (together with its successors and permitted assigns, “Company”) hereby promises to pay to , or the registered assignee thereof, the principal amount of __________________________ INTEREST RATE MATURITY DATE [___________] [____________] FIRST SECURITY BANK, NATIONAL ASSOCIATION, not in its individual capacity but solely as Owner Trustee Dollars (herein in such capacity called the “Owner Trustee”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust Agreement”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “Original Amount”), together with interest ) in installments on the Payment Dates set forth in Schedule I hereto, each such installment to be in an amount computed by multiplying the original principal amount of this Equipment Note by the Original Amount percentage set forth in Schedule I hereto opposite the Payment Date on which such installment is due, and to pay interest in arrears on each Payment Date at the Debt Rate shown above on the principal amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof hereof, or from the most recent date to which interest hereon has been paid or duly provided for, until paid in full at a rate per annum equal to the Debt Rate. The Original Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1, 1997, and thereafter on April 1 and October 1 of each year, to and including _______________full. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount principal amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day with the same force and effect as if made on such scheduled date, and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during from and after such extensionscheduled date. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645Security Agreement (N826DN), dated as of September 30March 12, 19972020, between the Owner Company and U.S. Bank Trust National Association, as Loan Trustee and Wilmington Trust Company (the “MortgageeLoan Trustee”), as the same may be amended amended, supplemented or supplemented otherwise modified from time to timetime in accordance with its terms. All other capitalized terms used in this Equipment Note and not defined herein herein, unless the context otherwise requires, shall have the respective meanings assigned set forth or incorporated by reference, and shall be construed and interpreted in the Trust manner described, in the Indenture. Indenture and Security Agreement (2020-1 EETC) N826DN This Equipment Note shall bear interest, payable on demand, at the Payment Past Due Rate (and not the Debt Rate) (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue principal amount and (to the extent permitted by applicable law) Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest interest, and any other amounts payable hereunder not paid when due for any period during which are the same is overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid in the manner provided herein or in the Indenture when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee Loan Trustee, or at the office of any successor trustee, in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount principal amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the MortgageeLoan Trustee, or as otherwise provided in the Trust Indenture. Company shall not have any responsibility for the distribution of any such payment to Noteholder of this Equipment Note. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the this Equipment Note shall be surrendered promptly thereafter to the Mortgagee Loan Trustee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, including the subordination provisions referred to below, each payment of the Original Amountan installment of principal amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, : first, to the payment of accrued interest on this Equipment Note (as well as any interest on (i) any overdue Original Amountprincipal amount, and (ii) to the extent permitted by applicable law, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and any other overdue amounts hereunder) to the date of such payment, ; second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other with respect to this Equipment Note; third, to the payment of the principal amount of this Equipment Note (or portion thereof) then due hereunder or under the Trust Indenturehereunder, if any; and fourth, the balance, if any, remaining thereafter, thereafter to the payment of installments of the Original Amount principal amount of this Equipment Note (or portion thereof) remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee Company pursuant to the terms of the Trust Indenture. The Trust Indenture Estate Collateral is held by the Mortgagee Loan Trustee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture, the Related Indentures, the Participation Agreement, the other Operative Documents and the Pass Through Documents. Reference is hereby made to the Trust Indenture, the Related Indentures, the Indenture and Security Agreement (2020-1 EETC) N826DN Participation Agreement, the other Operative Documents and the Pass Through Documents for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note (including as a “Related Equipment Note” under each Related Indenture) and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture Indenture, the Related Indentures, the Participation Agreement, the other Operative Documents and the Pass Through Documents each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like an equal aggregate Original Amount principal amount of Equipment Notes of the same Series of different authorized denominations, as requested by the holder surrendering the same. Prior to the due presentment for registration of transfer of this Equipment Note, the Owner Company and Loan Trustee shall deem and the Mortgagee shall treat the person Person in whose name this Equipment Note is registered on the Equipment Note Register as the absolute owner and holder hereof for the purpose of receiving all amounts payable with respect to this Equipment Note and for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Company nor Loan Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 4.02 of the Trust Indenture. [This Equipment Note is subject to certain restrictions set forth in Sections 4.01(a)(ii) and 4.01(a)(iii) of the Intercreditor Agreement, as further specified in Section 2.07 of the Indenture, to all of which terms and conditions in the Intercreditor Agreement each holder hereof agrees by its acceptance of this Equipment Note. The holder hereof, by its acceptance of this Equipment Note, agrees that no payment or distribution shall be made on or in respect of the Secured Obligations (as defined in the Indenture) or the Secured Obligations (as defined in any Related Indenture) owed to such holder, including, without limitation, any payment or distribution of cash, property or securities after the occurrence of any of the events referred to in Section 4.01(f) of the Indenture or after the commencement of any proceedings of the type referred to in Sections 4.01 (g), (h) or (i) of the Indenture, except, in each case, as expressly provided in Article III of the Indenture or Article III of the applicable Related Indenture, as appropriate. Indenture and Security Agreement (2020-1 EETC) N826DN The indebtedness evidenced by this Equipment Note is, is[,]1 [(i) to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series AA Equipment Notes]2 [Series AA Equipment Notes and Series A Equipment Notes]1 Notes]3 [Series AA Equipment Notes, Series A Equipment Notes and Series B [ ]4]5, and certain other Secured Obligations, and (ii)]6 to the extent and in the manner provided in each Related Indenture, subordinate and subject in right of payment to the prior payment in full under such Related Indenture of the “Secured Obligations” in respect of the “Equipment Notes],2 Notes” issued under such Related Indenture, and this Equipment Note is issued subject to such provisions. The Note Holder Noteholder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs Loan Trustee or the Mortgagee Related Loan Trustee under the applicable Related Indenture, as appropriate, on his such Noteholder’s behalf to take such any action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture or the applicable Related Indenture and (c) appoints Loan Trustee or the Mortgagee his Related Loan Trustee under the applicable Related Indenture, as appropriate, as such Noteholder’s attorney-in-fact for such purpose.]3 purpose. Without limiting the foregoing, the holder hereof, by its acceptance of this Equipment Note, agrees that if such holder, in its capacity as a Noteholder, receives any payment or distribution on any Secured Obligation in respect of this Equipment Note that it is not entitled to receive under Section 2.13 or Article III of the Indenture, it shall hold any amount so received in trust for Loan Trustee and forthwith turn over such amount to Loan Trustee in the form received to be applied as provided in Article III of the Indenture. 1 To be inserted in the case of a Series AA Equipment Note. 2 To be inserted in the case of a Series A Equipment Note. 3 To be inserted in the case of the Series of Additional Series Equipment Notes ranked most senior in priority of payment among all Series of Additional Series Equipment Notes. 4 To insert each Series of Additional Series Equipment Notes that rank senior in priority of payment to the Series of Additional Series Equipment Notes being issued. 5 To be inserted in the case of each Series of Additional Series Equipment Notes other than the Series of Additional Series Equipment Notes ranked most senior in priority of payment among all Series of Additional Series Equipment Notes. 6 To be inserted in the case of a Series A Equipment Note or an Additional Series Equipment Note. Indenture and Security Agreement (2020-1 EETC) N826DN Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee Loan Trustee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS LAW OF THE STATE OF NEW YORK. * * *, INCLUDING ALL MATTERS OF CONSTRUCTION, VALIDITY AND PERFORMANCE.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “"ACT”"), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANK, NATIONAL ASSOCIATIONWILMINGTON TRUST COMPANY, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 [GPA 1989 BN-12] DATED AS OF SEPTEMBER 30DECEMBER 19, 19971989, AS AMENDED. SERIES [A/B/C/D] NON-RECOURSE EQUIPMENT NOTE DUE [ ] ISSUED IN CONNECTION WITH ONE AIRBUS 320-000 XXXXXXXX XXXXXXX XXXXXX XXXXXX XXXISTRATION NUMBER N633AW. No._____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645. No. ____ Date: [__________, ____1996] $_______________________ INTEREST DEBT RATE MATURITY DATE [___________[ ] [____________[ , ] FIRST SECURITY BANK, NATIONAL ASSOCIATIONWILMINGTON TRUST COMPANY, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “"Owner Trustee”") under that certain Trust Agreement 645[GPA 1989 BN-12], dated as of September 30December 19, 19971989, as amended, between the Owner Participant named therein and First Security Bank, National Association Wilmington Trust Company (herein as such Trust Agreement may be supplemented or amended from time to time called the “"Trust Agreement”"), hereby promises to pay to __________________Fleet National Bank, as Subordination Agent under the Intercreditor Agreement, or the registered assignee thereof, the principal sum of $____________ (the “Original "Principal Amount”"), together with interest on the amount of the Original Principal Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt RateRate indicated above. The Original Principal Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Principal Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual semi-annual installments commencing on October 1January 2, 1997, and thereafter Trust Indenture 27 - 22 - on April 1 July 2 and October 1 January 2 of each year, to and including ___________, ____. Notwithstanding the foregoingforegoing or anything to the contrary contained herein, (i) the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Principal Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, ; and (ii) if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANKTRUST INDENTURE 2024-1 (AA and A) UNITED AIRLINES, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES [_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 [_____] AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645. N[_____] No. ____ Date: [__________, ____] $_______________________ INTEREST RATE MATURITY DATE [___________] [____________] FIRST SECURITY BANKUNITED AIRLINES, NATIONAL ASSOCIATIONINC., not in its individual capacity but solely as Owner Trustee a Delaware corporation (herein in such capacity called the “Owner Trustee”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust AgreementOwner”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “Original Amount”), together with interest on the amount of the Original Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Rate. The Original Amount of this Equipment Note shall be due and payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual semi-annual installments commencing on October 1, 1997, [_______]2 and thereafter on April 1 [February 15 and October 1 August 15]3 of each year, to and including [_______________]. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANKCONTINENTAL AIRLINES, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES [_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 [_____] AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645. N[_____] No. ____ Date: [__________, ____] $_______________________ INTEREST RATE MATURITY DATE [___________] [____________] FIRST SECURITY BANKCONTINENTAL AIRLINES, NATIONAL ASSOCIATIONINC., not in its individual capacity but solely as Owner Trustee a Delaware corporation (herein in such capacity called the “Owner Trustee”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust AgreementOwner”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “Original Amount”), together with interest on the amount of the Original Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Rate. The Original Amount of this Equipment Note shall be due and payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual semi-annual installments commencing on October 1[______ __, 1997, 20__,]6 and thereafter on [April 1 11 and October 1 11]7 of each year, to and including [_______________]. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *_______________________

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “"ACT”"), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANKCONTINENTAL AIRLINES, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES [_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 [_______] AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645N[_____]. No. ____ Date: [__________, ____] $_______________________ INTEREST RATE MATURITY DATE [___________] [____________] FIRST SECURITY BANKCONTINENTAL AIRLINES, NATIONAL ASSOCIATIONINC., not in its individual capacity but solely as Owner Trustee a Delaware corporation (herein in such capacity called the “Owner Trustee”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust Agreement”"Owner"), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “"Original Amount”"), together with interest on the amount of the Original Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Rate. The Original Amount of this Equipment Note shall be [payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. .] [paid in full on ____] Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1[______, 1997, __ 20__,] and thereafter on April 1 [______] and October 1 [______] of each year, to and including [_______________. .] Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “"ACT”"), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANK, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 (US AIRWAYS, INC. TRUST NO. N___U_) DATED AS OF SEPTEMBER 30_______ __, 1997____. SERIES [_____] LIMITED NON-RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 AIRBUS A3__-___ AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645_____. No. .____ Date: [__________, __,__] $_______________________ INTEREST RATE MATURITY DATE [___________----] [____________-----------,-----] FIRST SECURITY BANK, NATIONAL ASSOCIATION, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “"Owner Trustee”") under that certain Trust Agreement 645(US Airways, Inc. Trust No. N___U_), dated as of September 30_________ __, 1997____, between the Owner Participant named therein and First Security Bank, National Association the Owner Trustee (herein as such Trust Agreement may be supplemented or amended from time to time called the “"Trust Agreement”"), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “Original "Principal Amount”"), together with interest on the amount of the Original Principal Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt RateInterest Rate indicated above. The Original Principal Amount of this Equipment Note shall be payable in installments on the dates set forth and in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note installments as set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual semi-annual installments commencing on October 1__________ 5, 1997____, and thereafter on April 1 February 5 and October 1 August 5 of each year, to and including __________, _____. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Principal Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, Day then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day with the same force and effect as if made on such scheduled date and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during from and after such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *scheduled date.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATESTATE OR OTHER JURISDICTION. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE OFFERED FOR SALE OR SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE OR OTHER LAWS OR AN EXEMPTION EXEMPTIONS FROM SUCH REGISTRATIONS IS REGISTRATION REQUIREMENTS ARE AVAILABLE. FIRST SECURITY BANKIN ADDITION, NATIONAL ASSOCIATIONTHIS EQUIPMENT NOTE IS SUBJECT TO RESTRICTIONS ON TRANSFER PURSUANT TO THE PARTICIPATION AGREEMENT REFERRED TO HEREIN. AMERICAN AIRLINES, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES [_____2016-2[ ]-[XXX.XX.] LIMITED RECOURSE EQUIPMENT NOTE DUE [, 20____] _ ISSUED IN CONNECTION WITH THE BOEING [AIRBUS] [BOEING] MODEL 737-524 [MODEL] (GENERIC MODEL [GENERIC MODEL]) AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645[REG. NO.] No. .____ Date: [__________[ , ____] $_______________________ INTEREST DEBT RATE MATURITY DATE [___________] [____________] FIRST SECURITY BANK[ ]% , NATIONAL ASSOCIATION20 AMERICAN AIRLINES, not in INC. (together with its individual capacity but solely as Owner Trustee (herein in such capacity called successors and permitted assigns, the “Owner TrusteeCompany”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust Agreement”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum amount of $____________ Dollars (the “Original Amount”), together with interest $ ) [on ]7 [in installments on the Payment Dates set forth in Schedule I hereto, each such installment to be in an amount computed by multiplying the original principal amount of this Equipment Note by the Original Amount percentage set forth in Schedule I hereto opposite 7 To be inserted in non-installment Equipment Notes. Indenture and Security Agreement (American Airlines 2016-2 Aircraft EETC) [Reg. No.] the Payment Date on which such installment is due,]8 and to pay, on each Payment Date, interest in arrears on the principal amount remaining unpaid from time to time from the date hereof, or from the most recent date to which interest hereon has been paid or duly provided for, until paid in full at a rate per annum (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt RateRate shown above. The Original Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1, 1997, and thereafter on April 1 and October 1 of each year, to and including _______________. [Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount principal amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Note.]9 Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day with the same force and effect as if made on such scheduled date, and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during from and after such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *scheduled date.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANK, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997. JETBLUE AIRWAYS CORPORATION SERIES [_____[ ] LIMITED RECOURSE EQUIPMENT NOTE DUE [____[ ] ISSUED IN CONNECTION WITH THE BOEING AIRBUS MODEL 737A320-524 232 AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645NXXXJB. No. ____ [Date: [__________, ____] $_______________________ MATURITY DATE INTEREST RATE MATURITY DATE [___________Three-Month LIBOR + [ ]% [ ] [____________] FIRST SECURITY BANKJETBLUE AIRWAYS CORPORATION, NATIONAL ASSOCIATION, not in its individual capacity but solely as Owner Trustee a Delaware corporation (herein in such capacity called the “Owner Trustee”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust AgreementOwner”), hereby promises to pay to __________________WILMINGTON TRUST COMPANY, as Subordination Agent under the Intercreditor Agreement, or the registered assignee thereof, the principal sum of $____________ $ (the “Original Amount”), together with interest on the amount of the Original Amount remaining unpaid from time to time which shall accrue with respect to each Interest Period at the applicable Debt Rate (calculated on the basis of a year of 360 days comprised and the actual number of twelve 30-day monthsdays elapsed) in effect for such Interest Period from the date hereof until paid in full at a rate per annum equal to the Debt Ratefull. The Original Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual quarterly installments on March 15, June 15, September 15 and December 15 of each year commencing on October 1, 1997, and thereafter on April 1 and October 1 of each year, to and including _______________. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if whenever the date scheduled for any date on which a payment to be made hereunder or under this Equipment Note becomes due and payable is the Trust Indenture shall not be a Business Day, then such payment shall not be made due on such scheduled date but shall be made due on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “"ACT”"), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANK, NATIONAL ASSOCIATIONWILMINGTON TRUST COMPANY, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 [GPA 1989 BN-5] DATED AS OF SEPTEMBER 3022, 19971989, AS AMENDED. SERIES [_____A/B/C/D] LIMITED NON-RECOURSE EQUIPMENT NOTE DUE [____[ ] ISSUED IN CONNECTION WITH THE BOEING MODEL 737ONE AIRBUS 320-524 231 AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645N624AW. No. ____ Date: [__________, ____1996] $_______________________ INTEREST ------------------- DEBT RATE MATURITY DATE [____________] [________,____] FIRST SECURITY BANK, NATIONAL ASSOCIATIONWILMINGTON TRUST COMPANY, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “"Owner Trustee”") under that certain Trust Agreement 645[GPA 1989 BN-5], dated as of September 3022, 19971989, as amended, between the Owner Participant named therein and First Security Bank, National Association Wilmington Trust Company (herein as such Trust Agreement may be supplemented or amended from time to time called the “"Trust Agreement”"), hereby promises to pay to __________________Fleet National Bank, as Subordination Agent under the Intercreditor Agreement, or the registered assignee thereof, the principal sum of $____________ (the “Original "Principal Amount”"), together with interest on the amount of the Original Principal Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt RateRate indicated above. The Original Principal Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Principal Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual semi- Trust Indenture 29 - 24 - annual installments commencing on October 1January 2, 1997, and thereafter on April 1 July 2 and October 1 January 2 of each year, to and including _______________-----------, ----. Notwithstanding the foregoingforegoing or anything to the contrary contained herein, (i) the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Principal Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, ; and (ii) if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “"ACT”"), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANK, NATIONAL ASSOCIATIONWILMINGTON TRUST COMPANY, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 [GPA 1989 BN-6] DATED AS OF SEPTEMBER 30DECEMBER 15, 19971989, AS AMENDED. SERIES [_____A/B/C/D] LIMITED NON-RECOURSE EQUIPMENT NOTE DUE [____[ ] ISSUED IN CONNECTION WITH THE BOEING MODEL 737ONE AIRBUS 320-524 231 AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645N626AW. No. ____ Date: [__________, ____1996] $_______________________ INTEREST DEBT RATE MATURITY DATE [___________] [________,____] FIRST SECURITY BANK, NATIONAL ASSOCIATIONWILMINGTON TRUST COMPANY, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “"Owner Trustee”") under that certain Trust Agreement 645[GPA 1989 BN-6], dated as of September 30December 15, 19971989, as amended, between the Owner Participant named therein and First Security Bank, National Association Wilmington Trust Company (herein as such Trust Agreement may be supplemented or amended from time to time called the “"Trust Agreement”"), hereby promises to pay to __________________Fleet National Bank, as Subordination Agent under the Intercreditor Agreement, or the registered assignee thereof, the principal sum of $____________ (the “Original "Principal Amount”"), together with interest on the amount of the Original Principal Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt RateRate indicated above. The Original Principal Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Principal Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual semi- Trust Indenture annual installments commencing on October 1January 2, 1997, and thereafter on April 1 July 2 and October 1 January 2 of each year, to and including ___________, ____. Notwithstanding the foregoingforegoing or anything to the contrary contained herein, (i) the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Principal Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, ; and (ii) if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: Indenture and Security Agreement (2009-1 EETC) [Reg. No.] THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATESTATE OR OTHER JURISDICTION. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE OFFERED FOR SALE OR SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE OR OTHER LAWS OR AN EXEMPTION EXEMPTIONS FROM SUCH REGISTRATIONS IS REGISTRATION REQUIREMENTS ARE AVAILABLE. FIRST SECURITY BANKIN ADDITION, NATIONAL ASSOCIATIONTHIS EQUIPMENT NOTE IS SUBJECT TO RESTRICTIONS ON TRANSFER PURSUANT TO THE PARTICIPATION AGREEMENT REFERRED TO HEREIN. DELTA AIR LINES, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES 2009-1[__]-[_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____MATURITY DATE] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 [MODEL] (GENERIC MODEL [GENERIC MODEL]) AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645[REG. NO.] No. _________ Date: [__________, ____] $_ INTEREST RATE MATURITY DATE __________ _______________ INTEREST RATE MATURITY DATE [___________] [____________] FIRST SECURITY BANKDELTA AIR LINES, NATIONAL ASSOCIATIONINC. (together with its successors and permitted assigns, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “Owner TrusteeCompany”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust Agreement”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum amount of ___Dollars ($___) [on _________ (the “Original Amount”), together with interest ] 3 [in installments on the Payment Dates set forth in Schedule I hereto, each such installment to be in an amount computed by multiplying the original principal amount of this Equipment Note by the Original Amount percentage set forth in Schedule I hereto opposite the Payment Date on which such installment is due,] 4 and to pay interest in arrears on each Payment Date at the Debt Rate on the principal amount remaining unpaid from time 3 To be inserted in non-installment Equipment Notes. 4 To be inserted in installment Equipment Notes. Indenture and Security Agreement (2009-1 EETC) [Reg. No.] to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof hereof, or from the most recent date to which interest hereon has been paid or duly provided for, until paid in full at a rate per annum equal to the Debt Ratefull. The Original Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1, 1997, and thereafter on April 1 and October 1 of each year, to and including _______________. [Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount principal amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. .] 5 Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day with the same force and effect as if made on such scheduled date, and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during from and after such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *scheduled date.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “"ACT”"), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANKUS AIRWAYS, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES [_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 AIRBUS A___-___ AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645_____. No. .____ Date: [__________, __,__] $_______________________ INTEREST RATE MATURITY DATE [___________----] [____________-----------,-----] FIRST SECURITY BANKUS AIRWAYS, NATIONAL ASSOCIATION, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “Owner Trustee”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust Agreement”)INC., hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “Original "Principal Amount”"), together with interest on the amount of the Original Principal Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt RateInterest Rate indicated above. The Original Principal Amount of this Equipment Note shall be payable in installments on the dates set forth and in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note installments as set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual semi-annual installments commencing on October 1, 1997[-], and thereafter on April 1 February 5 and October 1 August 5 of each year, to and including _______________[-]. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Principal Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, Day then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day with the same force and effect as if made on such scheduled date and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during from and after such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *scheduled date.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATESTATE OR OTHER JURISDICTION. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE OFFERED FOR SALE OR SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE OR OTHER LAWS OR AN EXEMPTION EXEMPTIONS FROM SUCH REGISTRATIONS IS REGISTRATION REQUIREMENTS ARE AVAILABLE. FIRST SECURITY BANKIN ADDITION, NATIONAL ASSOCIATIONTHIS EQUIPMENT NOTE IS SUBJECT TO RESTRICTIONS ON TRANSFER PURSUANT TO THE PARTICIPATION AGREEMENT REFERRED TO HEREIN. Indenture and Security Agreement (2015-1 EETC) N801DZ DELTA AIR LINES, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES [_____2015-1[ ]-[ ] LIMITED RECOURSE EQUIPMENT NOTE DUE [____MATURITY DATE] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 [MODEL] (GENERIC MODEL [GENERIC MODEL]) AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645[REG. NO.] No. ____ Date: [__________, ____] $_______________________ INTEREST DEBT RATE MATURITY DATE [___________] [____________] FIRST SECURITY BANKDELTA AIR LINES, NATIONAL ASSOCIATIONINC. (together with its successors and permitted assigns, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “Owner TrusteeCompany”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust Agreement”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum amount of $____________ Dollars (the “Original Amount”), together with interest $ ) [on ]1 [in installments on the Payment Dates set forth in Schedule I hereto, each such installment to be in an amount computed by multiplying the original principal amount of this Equipment Note by the Original Amount percentage set forth in Schedule I hereto opposite the Payment Date on which such installment is due,]2 and to pay interest in arrears on each Payment Date at the Debt Rate shown above on the principal amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof hereof, or from the most recent date to which interest hereon has been paid or duly provided for, until paid in full at a rate per annum equal to the Debt Ratefull. The Original Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1, 1997, and thereafter on April 1 and October 1 of each year, to and including _______________. [Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount principal amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Note.]3 Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day with the same force and effect as if made on such scheduled date, and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during from and after such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *scheduled date.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “"ACT”"), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANK, NATIONAL ASSOCIATIONWILMINGTON TRUST COMPANY, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 [GPA 1990 AWA-13] DATED AS OF SEPTEMBER 3021, 19971990, AS AMENDED. SERIES [A/B/C/D/E] NON-RECOURSE EQUIPMENT NOTE DUE [ ] ISSUED IN CONNECTION WITH ONE AIRBUS 320-000 XXXXXXXX XXXXXXX XXXXXX XXXXXX XXXISTRATION NUMBER N634AW. No._____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645. No. ____ Date: [__________, ____,1996] $_______________________ INTEREST DEBT RATE MATURITY DATE [___________[ ] [____________[ , ] FIRST SECURITY BANK, NATIONAL ASSOCIATIONWILMINGTON TRUST COMPANY, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “"Owner Trustee”") under that certain Trust Agreement 645[GPA 1990 AWA-13], dated as of September 3021, 19971990, as amended, between the Owner Participant named therein and First Security Bank, National Association Wilmington Trust Company (herein as such Trust Agreement may be supplemented or amended from time to time called the “"Trust Agreement”"), hereby promises to pay to __________________Fleet National Bank, as Subordination Agent under the Intercreditor Agreement, or the registered assignee thereof, the principal sum of $____________ (the “Original "Principal Amount”"), together with interest on the amount of the Original Principal Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt RateRate indicated above. The Original Principal Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Principal Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual semi Trust Indenture annual installments commencing on October 1January 2, 1997, and thereafter on April 1 July 2 and October 1 January 2 of each year, to and including ___________, ____. Notwithstanding the foregoingforegoing or anything to the contrary contained herein, (i) the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Principal Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, ; and (ii) if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: BACK THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANKCONTINENTAL AIRLINES, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES [_____G/B] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645. JUNE 2, 2013 No. .____ Date: [__________, ____] $MATURITY DATE June 2, 2013 CONTINENTAL AIRLINES, INC., a Delaware corporation (“Owner”), hereby promises to pay to [_______________________ INTEREST RATE MATURITY DATE [___________] ], or the registered assignee thereof, the principal sum of $[____________] FIRST SECURITY BANK, NATIONAL ASSOCIATION, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “Owner Trustee”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust Agreement”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “Original Amount”), together with interest on the amount of the Original Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum for each Interest Period equal to the Debt RateRate for such Interest Period (calculated on the basis of a year of 360 days and actual days elapsed during the period for which such amount accrues). The Original Amount of this Equipment Note shall be payable paid in installments full on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I heretoJune 2, 2013. Accrued but unpaid interest shall be due and payable in semiannual quarterly installments commencing on October 1September 2, 19972006, and thereafter on April 1 December 2, March 2, June 2 and October 1 September 2 of each year, to and including _______________June 2, 2013. Interest shall be payable with respect to the first but not the last day of each Interest Period. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount and such extension of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms computation of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *payable.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATESTATE OR OTHER JURISDICTION. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE OFFERED FOR SALE OR SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE OR OTHER LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS REGISTRATION REQUIREMENTS IS AVAILABLE. FIRST SECURITY BANKIN ADDITION, NATIONAL ASSOCIATIONTHIS EQUIPMENT NOTE IS SUBJECT TO RESTRICTIONS ON TRANSFER PURSUANT TO THE PARTICIPATION AGREEMENT REFERRED TO HEREIN. Indenture and Security Agreement (2020-1 EETC) N626QX HORIZON AIR INDUSTRIES, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES 2020-1[__]-[_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____MATURITY DATE] ISSUED IN CONNECTION WITH THE BOEING EMBRAER MODEL 737ERJ 170-524 200LR (GENERIC MANUFACTURER AND MODEL EMBRAER MODEL ERJ 170-200) AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645. N626QX No. ____ Date: [__________, ____] $_______________________ INTEREST RATE MATURITY DATE [Date: ___________] [_ DEBT RATE MATURITY DATE HORIZON AIR INDUSTRIES, INC. (together with its successors and permitted assigns, “Company”) hereby promises to pay to ____________] FIRST SECURITY BANK, NATIONAL ASSOCIATION, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “Owner Trustee”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust Agreement”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum amount of __________________________ Dollars ($____________ (the “Original Amount”), together with interest ) [on _______]1 [in installments on the Payment Dates set forth in Schedule I hereto, each such installment to be in an amount computed by multiplying the original principal amount of this Equipment Note by the Original Amount percentage set forth in Schedule I hereto opposite the Payment Date on which such installment is due,]2 and to pay interest in arrears on each Payment Date at the Debt Rate shown above on the principal amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof hereof, or from the most recent date to which interest hereon has been paid or duly provided for, until paid in full at a rate per annum equal to the Debt Ratefull. The Original Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1, 1997, and thereafter on April 1 and October 1 of each year, to and including _______________. [Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount principal amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Note.]3 Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day with the same force and effect as if made on such scheduled date, and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during from and after such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *scheduled date.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “"ACT”"), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANK, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 (US AIRWAYS, INC. TRUST NO. N___U_) DATED AS OF SEPTEMBER 30_______ __, 1997____. SERIES [_____] LIMITED NON-RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 AIRBUS A3__-___ AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645_____. No. .____ Date: [__________, __,__] $_______________________ INTEREST RATE MATURITY DATE [___________] [___________,____] FIRST SECURITY BANK, NATIONAL ASSOCIATION, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “"Owner Trustee”") under that certain Trust Agreement 645(US Airways, Inc. Trust No. N___U_), dated as of September 30_________ __, 1997____, between the Owner Participant named therein and First Security Bank, National Association the Owner Trustee (herein as such Trust Agreement may be supplemented or amended from time to time called the “"Trust Agreement”"), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “Original "Principal Amount”"), together with interest on the amount of the Original Principal Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt RateInterest Rate indicated above, as adjusted in accordance with the terms in Schedule I to the Trust Indenture (as defined below). The Original Principal Amount of this Equipment Note shall be payable in installments on the dates set forth and in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note installments as set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual semi-annual installments commencing on October 1__________, 1997, _____ and thereafter on April March 1 and October September 1 of each year, to and including __________, _____. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Principal Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, Day then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day with the same force and effect as if made on such scheduled date and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during from and after such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *scheduled date.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “"ACT”"), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANKCONTINENTAL AIRLINES, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES [_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 [_______] AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645N[_____]. No. ____ Date: [__________, ____] $________________________ INTEREST RATE MATURITY DATE ------------- ------------- [___________] [____________] FIRST SECURITY BANKCONTINENTAL AIRLINES, NATIONAL ASSOCIATIONINC., not in its individual capacity but solely as Owner Trustee a Delaware corporation (herein in such capacity called the “Owner Trustee”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust Agreement”"Owner"), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “"Original Amount”"), together with interest on the amount of the Original Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Rate. The Original Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1[______, 1997, __ 199_,] and thereafter on April 1 [______] and October 1 [______] of each year, to and including [_______________. .] Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “"ACT”"), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANK2002 EETC - Mortgage (Owned) (10) AMERICAN TRANS AIR, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES [_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 800 AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645N___TZ. No. ____ Date: [__________, ____] $_______________________ INTEREST RATE MATURITY DATE [___________] [____________] FIRST SECURITY BANKAMERICAN TRANS AIR, NATIONAL ASSOCIATIONINC., not in its individual capacity but solely as Owner Trustee an Indiana corporation (herein in such capacity called the “Owner Trustee”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust Agreement”"Owner"), hereby promises to pay to __________________WILMINGTON TRUST COMPANY, as Subordination Agent under the Intercreditor Agreement, or the registered assignee thereof, the principal sum of $____________ (the “"Original Amount”"), together with interest on the amount of the Original Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Rate. The Original Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual quarterly installments commencing on October 1______ __, 1997200_, and thereafter on April 1 [February 20], [May 20], [August 20] and October 1 [November 20] of each year, to and including _______________. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if whenever the date scheduled for any date on which a payment to be made hereunder or under this Equipment Note becomes due and payable is the Trust Indenture shall not be a Business Day, then such payment shall not be made due on such scheduled date but shall be made due on the next succeeding Business Day and with the same effect as if such payment is made on such next succeeding Business Day, no interest shall accrue paid on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when originally scheduled due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *date.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “"ACT”"), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANK, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 (US AIRWAYS, INC. TRUST NO. N___U_) DATED AS OF SEPTEMBER 30_______ __, 1997____. SERIES [_____] LIMITED NON-RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 AIRBUS A330-___ AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645_____. No. .____ Date: [__________, __,__] $_______________________ INTEREST RATE MATURITY DATE [___________] [___________,_____] FIRST SECURITY BANK, NATIONAL ASSOCIATION, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “"Owner Trustee”") under that certain Trust Agreement 645(US Airways, Inc. Trust No. N___U_), dated as of September 30_________ __, 1997____, between the Owner Participant named therein and First Security Bank, National Association the Owner Trustee (herein as such Trust Agreement may be supplemented or amended from time to time called the “"Trust Agreement”"), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “Original "Principal Amount”"), together with interest on the amount of the Original Principal Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt RateInterest Rate indicated above. The Original Principal Amount of this Equipment Note shall be payable in installments on the dates set forth and in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note installments as set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual semi- annual installments commencing on October 1__________ 20, 1997____, and thereafter on April 1 February 20 and October 1 August 20 of each year, to and including __________, _____. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Principal Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, Day then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day with the same force and effect as if made on such scheduled date and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during from and after such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *scheduled date.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATESTATE OR OTHER JURISDICTION. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE OFFERED FOR SALE OR SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE OR OTHER LAWS OR AN EXEMPTION EXEMPTIONS FROM SUCH REGISTRATIONS IS REGISTRATION REQUIREMENTS ARE AVAILABLE. FIRST SECURITY BANKIN ADDITION, NATIONAL ASSOCIATIONTHIS EQUIPMENT NOTE IS SUBJECT TO RESTRICTIONS ON TRANSFER PURSUANT TO THE PARTICIPATION AGREEMENT REFERRED TO HEREIN. DELTA AIR LINES, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES 2007-1[__]-[_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____MATURITY DATE] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 [MODEL] (GENERIC MODEL [GENERIC MODEL]) AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645[REG. NO.] No. __________ Date: [________ INTEREST RATE MATURITY DATE __________ __________, ____] $_ DELTA AIR LINES, INC. (together with its successors and permitted assigns, “Company”) hereby promises to pay to , or the registered assignee thereof, the principal amount of __________________________ INTEREST RATE MATURITY DATE [___________] [____________] FIRST SECURITY BANK, NATIONAL ASSOCIATION, not in its individual capacity but solely as Owner Trustee Dollars (herein in such capacity called the “Owner Trustee”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust Agreement”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “Original Amount”), together with interest ) [on _______]3 [in installments on the Payment Dates set forth in Schedule I hereto, each such installment to be in an amount computed by multiplying the original principal amount of this Equipment Note by the Original Amount percentage set forth in Schedule I hereto opposite the Payment Date on which such installment is due,]4 and to pay interest in arrears on each Payment Date at the Debt Rate on the principal amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Rate. The Original Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1, 1997, and thereafter on April 1 and October 1 of each year, to and including _______________full. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount principal amount and all accrued and unpaid interest on, and any other 3 To be inserted in non-installment Equipment Notes. 4 To be inserted in installment Equipment Notes. amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day with the same force and effect as if made on such scheduled date, and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during from and after such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *scheduled date.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANKUS AIRWAYS, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES [_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING AIRBUS MODEL 737-524 [_____] AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645. N[_____] No. ____ Date: [__________, ____] $_______________________ INTEREST RATE MATURITY DATE [___________] [____________] FIRST SECURITY BANKUS AIRWAYS, NATIONAL ASSOCIATIONINC., not in its individual capacity but solely as Owner Trustee a Delaware corporation (herein in such capacity called the “Owner Trustee”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust AgreementOwner”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “Original Amount”), together with interest on the amount of the Original Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Rate. The Original Amount of this Equipment Note shall be due and payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual semi-annual installments commencing on October 122, 1997, 2011 and thereafter on April 1 22 and October 1 22 of each year, to and including [_______________]. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “"ACT”"), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANK, NATIONAL ASSOCIATIONWILMINGTON TRUST COMPANY, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 [GPA 1991 AWA-E3] DATED AS OF SEPTEMBER 30MARCH 15, 19971991, AS AMENDED. SERIES [A/B/C/D/E] NON-RECOURSE EQUIPMENT NOTE DUE [ ] ISSUED IN CONNECTION WITH ONE IAE INTERNATIONAL AERO ENGINES AG V2500-A1 ENGINE WITH MANUFACTURER'S SERIAL NUMBER V0019 No._____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645. No. ____ Date: [__________, ____,1996] $_______________________ INTEREST DEBT RATE MATURITY DATE [___________] [_________,___] FIRST SECURITY BANK, NATIONAL ASSOCIATIONWILMINGTON TRUST COMPANY, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “"Owner Trustee”") under that certain Trust Agreement 645[GPA 1991 AWA-E3], dated as of September 30March 15, 19971991, as amended, between the Owner Participant named therein and First Security Bank, National Association Wilmington Trust Company (herein as such Trust Agreement may be supplemented or amended from time to time called the “"Trust Agreement”"), hereby promises to pay to __________________Fleet National Bank, as Subordination Agent under the Intercreditor Agreement, or the registered assignee thereof, the principal sum of $____________ (the “Original "Principal Amount”"), together with interest on the amount of the Original Principal Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt RateRate indicated above. The Original Principal Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Principal Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual semi-annual installments commencing on October 1January 2, 1997, and thereafter Trust Indenture on April 1 July 2 and October 1 January 2 of each year, to and including ______________, ____. Notwithstanding the foregoingforegoing or anything to the contrary contained herein, (i) the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Principal Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, ; and (ii) if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “"ACT”"), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANK, NATIONAL ASSOCIATIONWILMINGTON TRUST COMPANY, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 [GPA 1989 BN-10] DATED AS OF SEPTEMBER 30DECEMBER 19, 19971989, AS AMENDED. SERIES [_____A/B/C/D] LIMITED NON-RECOURSE EQUIPMENT NOTE DUE [____[ ] ISSUED IN CONNECTION WITH THE BOEING MODEL 737ONE AIRBUS 320-524 231 AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645N631AW. No. ____ Date: [__________, ____1996] $_______________________ INTEREST DEBT RATE MATURITY DATE [___________] [________,____] FIRST SECURITY BANK, NATIONAL ASSOCIATIONWILMINGTON TRUST COMPANY, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “"Owner Trustee”") under that certain Trust Agreement 645[GPA 1989 BN-10], dated as of September 30December 19, 19971989, as amended, between the Owner Participant named therein and First Security Bank, National Association Wilmington Trust Company (herein as such Trust Agreement may be supplemented or amended from time to time called the “"Trust Agreement”"), hereby promises to pay to __________________Fleet National Bank, as Subordination Agent under the Intercreditor Agreement, or the registered assignee thereof, the principal sum of $____________ (the “Original "Principal Amount”"), together with interest on the amount of the Original Principal Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt RateRate indicated above. The Original Principal Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Principal Trust Indenture Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1January 2, 1997, and thereafter on April 1 July 2 and October 1 January 2 of each year, to and including ___________, ____. Notwithstanding the foregoingforegoing or anything to the contrary contained herein, (i) the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Principal Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, ; and (ii) if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATESTATE OR OTHER JURISDICTION. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE OFFERED FOR SALE OR SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE OR OTHER LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS REGISTRATION REQUIREMENTS IS AVAILABLE. FIRST SECURITY BANKIN ADDITION, NATIONAL ASSOCIATIONTHIS EQUIPMENT NOTE IS SUBJECT TO RESTRICTIONS ON TRANSFER PURSUANT TO THE PARTICIPATION AGREEMENT REFERRED TO HEREIN. ALASKA AIRLINES, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES 2020-1[__]-[_____] LIMITED RECOURSE Indenture and Security Agreement (2020-1 EETC) N568AS EQUIPMENT NOTE DUE [____MATURITY DATE] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 890 (GENERIC MANUFACTURER AND MODEL BOEING MODEL 737-800) AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645. N568AS No. ____ Date: [__________, ____] $_______________________ INTEREST RATE MATURITY DATE [Date: ___________] [_ DEBT RATE MATURITY DATE ALASKA AIRLINES, INC. (together with its successors and permitted assigns, “Company”) hereby promises to pay to ____________] FIRST SECURITY BANK, NATIONAL ASSOCIATION, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “Owner Trustee”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust Agreement”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum amount of __________________________ Dollars ($____________ (the “Original Amount”), together with interest ) [on _______]1 [in installments on the Payment Dates set forth in Schedule I hereto, each such installment to be in an amount computed by multiplying the original principal amount of this Equipment Note by the Original Amount percentage set forth in Schedule I hereto opposite the Payment Date on which such installment is due,]2 and to pay interest in arrears on each Payment Date at the Debt Rate shown above on the principal amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof hereof, or from the most recent date to which interest hereon has been paid or duly provided for, until paid in full at a rate per annum equal to the Debt Ratefull. The Original Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1, 1997, and thereafter on April 1 and October 1 of each year, to and including _______________. [Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount principal amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Note.]3 Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day with the same force and effect as if made on such scheduled date, and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during from and after such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *scheduled date.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: Indenture and Security Agreement (2019-1 EETC) N907DN THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATESTATE OR OTHER JURISDICTION. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE OFFERED FOR SALE OR SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE OR OTHER LAWS OR AN EXEMPTION EXEMPTIONS FROM SUCH REGISTRATIONS IS REGISTRATION REQUIREMENTS ARE AVAILABLE. FIRST SECURITY BANKIN ADDITION, NATIONAL ASSOCIATIONTHIS EQUIPMENT NOTE IS SUBJECT TO RESTRICTIONS ON TRANSFER PURSUANT TO THE PARTICIPATION AGREEMENT REFERRED TO HEREIN. DELTA AIR LINES, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES 2019-1[__]-[_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____MATURITY DATE] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 900ER (GENERIC MANUFACTURER AND MODEL BOEING MODEL 737-900) AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645. N907DN No. ____ Date: [__________, ____] $_______________________ INTEREST DEBT RATE MATURITY DATE [___________] [____________] FIRST SECURITY BANKDELTA AIR LINES, NATIONAL ASSOCIATIONINC. (together with its successors and permitted assigns, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “Owner TrusteeCompany”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust Agreement”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum amount of $____________ Dollars (the “Original Amount”), together with interest $ ) [on ]1 [in installments on the Payment Dates set forth in Schedule I hereto, each such installment to be in an amount computed by multiplying the original principal amount of this Equipment Note by the Original Amount percentage set forth in Schedule I hereto opposite the Payment Date on which such installment is due,]2 and to pay interest in arrears on each Payment Date at the Debt Rate shown above on the principal amount remaining unpaid 1 To be inserted in non-installment Equipment Notes. 2 To be inserted in installment Equipment Notes. Indenture and Security Agreement (2019-1 EETC) N907DN from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof hereof, or from the most recent date to which interest hereon has been paid or duly provided for, until paid in full at a rate per annum equal to the Debt Ratefull. The Original Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1, 1997, and thereafter on April 1 and October 1 of each year, to and including _______________. [Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount principal amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Note.]3 Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day with the same force and effect as if made on such scheduled date, and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during from and after such extensionscheduled date. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645Security Agreement (N907DN), dated as of September 30March 13, 19972019, between the Owner Company and U.S. Bank Trust National Association, as Loan Trustee and Wilmington Trust Company (the “MortgageeLoan Trustee”), as the same may be amended amended, supplemented or supplemented otherwise modified from time to timetime in accordance with its terms. All other capitalized terms used in this Equipment Note and not defined herein herein, unless the context otherwise requires, shall have the respective meanings assigned set forth or incorporated by reference, and shall be construed and interpreted in the Trust manner described, in the Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Past Due Rate (and not the Debt Rate) (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue principal amount and (to the extent permitted by applicable law) Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest interest, and any other amounts payable hereunder not paid when due for any period during which are the same is overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid in the manner provided herein or in the Indenture when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee Loan Trustee, or at the office of any successor trustee, in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount principal amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the MortgageeLoan Trustee, or as otherwise provided in the Trust Indenture. Company shall not have any responsibility for the distribution of any such payment to Noteholder of this Equipment Note. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the this Equipment Note shall be surrendered promptly thereafter to the Mortgagee Loan Trustee for cancellation. 3 To be inserted in installment Equipment Notes. Indenture and Security Agreement (2019-1 EETC) N907DN The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, including the subordination provisions referred to below, each payment of the Original Amountan installment of principal amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, : first, to the payment of accrued interest on this Equipment Note (as well as any interest on (i) any overdue Original Amountprincipal amount, and (ii) to the extent permitted by applicable law, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and any other overdue amounts hereunder) to the date of such payment, ; second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other with respect to this Equipment Note; third, to the payment of the principal amount of this Equipment Note (or portion thereof) then due hereunder or under the Trust Indenturehereunder, if any; and fourth, the balance, if any, remaining thereafter, thereafter to the payment of installments of the Original Amount principal amount of this Equipment Note (or portion thereof) remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee Company pursuant to the terms of the Trust Indenture. The Trust Indenture Estate Collateral is held by the Mortgagee Loan Trustee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture, the Related Indentures, the Participation Agreement, the other Operative Documents and the Pass Through Documents. Reference is hereby made to the Trust Indenture Indenture, the Related Indentures, the Participation Agreement, the other Operative Documents and the Pass Through Documents for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note (including as a “Related Equipment Note” under each Related Indenture) and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture Indenture, the Related Indentures, the Participation Agreement, the other Operative Documents and the Pass Through Documents each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like an equal aggregate Original Amount principal amount of Equipment Notes of the same Series of different authorized denominations, as requested by the holder surrendering the same. Prior to the due presentment for registration of transfer of this Equipment Note, the Owner Company and Loan Trustee shall deem and the Mortgagee shall treat the person Person in whose name this Equipment Note is registered on the Equipment Note Register as the absolute owner and holder hereof for the purpose of receiving all amounts payable with respect to this Equipment Note and for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Company nor Loan Trustee nor the Mortgagee shall be affected by notice to the contrary. Indenture and Security Agreement (2019-1 EETC) N907DN This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 4.02 of the Trust Indenture. [This Equipment Note is subject to certain restrictions set forth in Sections 4.01(a)(ii) and 4.01(a)(iii) of the Intercreditor Agreement, as further specified in Section 2.07 of the Indenture, to all of which terms and conditions in the Intercreditor Agreement each holder hereof agrees by its acceptance of this Equipment Note. The holder hereof, by its acceptance of this Equipment Note, agrees that no payment or distribution shall be made on or in respect of the Secured Obligations (as defined in the Indenture) or the Secured Obligations (as defined in any Related Indenture) owed to such holder, including, without limitation, any payment or distribution of cash, property or securities after the occurrence of any of the events referred to in Section 4.01(f) of the Indenture or after the commencement of any proceedings of the type referred to in Sections 4.01 (g), (h) or (i) of the Indenture, except, in each case, as expressly provided in Article III of the Indenture or Article III of the applicable Related Indenture, as appropriate. The indebtedness evidenced by this Equipment Note is, is[,]4 [(i) to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series AA Equipment Notes]5 [Series AA Equipment Notes and Series A Equipment Notes]1 Notes]6 [Series AA Equipment Notes, Series A Equipment Notes and [ ]7]8, and certain other Secured Obligations, and (ii)]9 to the extent and in the manner provided in each Related Indenture, subordinate and subject in right of payment to the prior payment in full under such 4 To be inserted in the case of a Series B AA Equipment Notes],2 Note. 5 To be inserted in the case of a Series A Equipment Note. 6 To be inserted in the case of the Series of Additional Series Equipment Notes ranked most senior in priority of payment among all Series of Additional Series Equipment Notes. 7 To insert each Series of Additional Series Equipment Notes that rank senior in priority of payment to the Series of Additional Series Equipment Notes being issued. 8 To be inserted in the case of each Series of Additional Series Equipment Notes other than the Series of Additional Series Equipment Notes ranked most senior in priority of payment among all Series of Additional Series Equipment Notes. 9 To be inserted in the case of a Series A Equipment Note or an Additional Series Equipment Note. Indenture and Security Agreement (2019-1 EETC) N907DN Related Indenture of the “Secured Obligations” in respect of the “Equipment Notes” issued under such Related Indenture, and this Equipment Note is issued subject to such provisions. The Note Holder Noteholder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs Loan Trustee or the Mortgagee Related Loan Trustee under the applicable Related Indenture, as appropriate, on his such Noteholder’s behalf to take such any action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture or the applicable Related Indenture and (c) appoints Loan Trustee or the Mortgagee his Related Loan Trustee under the applicable Related Indenture, as appropriate, as such Noteholder’s attorney-in-fact for such purpose.]3 purpose. Without limiting the foregoing, the holder hereof, by its acceptance of this Equipment Note, agrees that if such holder, in its capacity as a Noteholder, receives any payment or distribution on any Secured Obligation in respect of this Equipment Note that it is not entitled to receive under Section 2.13 or Article III of the Indenture, it shall hold any amount so received in trust for Loan Trustee and forthwith turn over such amount to Loan Trustee in the form received to be applied as provided in Article III of the Indenture. Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee Loan Trustee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS LAW OF THE STATE OF NEW YORK. * * *, INCLUDING ALL MATTERS OF CONSTRUCTION, VALIDITY AND PERFORMANCE.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANKCONTINENTAL AIRLINES, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. BACK SERIES [_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 [_____] AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645. N[_____] No. ____ Date: [__________, ____] $_______________________ INTEREST RATE MATURITY DATE [___________] [____________] FIRST SECURITY BANKCONTINENTAL AIRLINES, NATIONAL ASSOCIATIONINC., not in its individual capacity but solely as Owner Trustee a Delaware corporation (herein in such capacity called the “Owner Trustee”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust AgreementOwner”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “Original Amount”), together with interest on the amount of the Original Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Rate. The Original Amount of this Equipment Note shall be due and payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual semi-annual installments commencing on October 1[______ __, 1997, 20__,]1 and thereafter on April 1 19 and October 1 19 of each year, to and including [_______________]. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “"ACT”"), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANK, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 [____] DATED AS OF SEPTEMBER 30APRIL 21, 19971998. SERIES [_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING [BOEING] [XXXXXXXXX XXXXXXX] MODEL 737-524 [____] AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645. N[____] No. ____ Date: [__________, ____] $_______________________ INTEREST RATE MATURITY DATE ------------- ------------- [___________] [____________] FIRST SECURITY BANK, NATIONAL ASSOCIATION, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “"Owner Trustee”") under that certain Trust Agreement 645[____], dated as of September 30April 21, 19971998, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “"Trust Agreement”"), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “"Original Amount”"), together with interest on the amount of the Original Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Rate. The Original Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 115, 19971998, and thereafter on April 1 15 and October 1 15 of each year, to and including _______________. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH TRUST INDENTURE 2020-1 APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANKHAWAIIAN AIRLINES, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES [_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING AIRBUS MODEL 737-524 [_______] AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645. N[_____] No. ____ Date: [__________, ____] $_______________________ INTEREST RATE MATURITY DATE [___________] [____________, ____] FIRST SECURITY BANKHAWAIIAN AIRLINES, NATIONAL ASSOCIATIONINC., not in its individual capacity but solely as Owner Trustee a Delaware corporation (herein in such capacity called the “Owner Trustee”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust AgreementOwner”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “Original Amount”), together with interest on the amount of the Original Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Rate. The Original Amount of this Equipment Note shall be due and payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual semi-annual installments commencing on October 1March 15, 1997, 2021 and thereafter on April 1 March 15 and October 1 September 15 of each year, to and including [__________, _____]. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “"ACT”"), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANK, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 [___] DATED AS OF SEPTEMBER 30[_______________, 1997199_]. SERIES [_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 [_______] AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645N[_____]. No. ____ Date: [__________, ____] $_______________________ INTEREST RATE MATURITY DATE [___________] [____________] FIRST SECURITY BANK, NATIONAL ASSOCIATION, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “"Owner Trustee”") under that certain Trust Agreement 645[___], dated as of September 30[____________, 1997199_], between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “"Trust Agreement”"), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “"Original Amount”"), together with interest on the amount of the Original Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Rate. The Original Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1[_____________], 1997199[_], and thereafter on April 1 [_______] and October 1 [_______] of each year, to and including [_______________]. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “"ACT”"), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATESTATE OR OTHER JURISDICTION. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE OFFERED FOR SALE OR SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE OR OTHER LAWS OR AN EXEMPTION EXEMPTIONS FROM SUCH REGISTRATIONS IS REGISTRATION REQUIREMENTS ARE AVAILABLE. FIRST SECURITY BANKDELTA AIR LINES, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES 2002-1 [_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 832 AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645. N372DA No. .____ Date: [__________, __,__] $_______________________ INTEREST RATE MATURITY DATE [___________] [____________, ____] FIRST SECURITY BANKDELTA AIR LINES, NATIONAL ASSOCIATIONINC. (together with its successors and permitted assigns, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “Owner Trustee”"Company") under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust Agreement”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum amount of $________________ Dollars (the “Original Amount”), together with interest $_________) [on __________]1 [in installments on the Payment Dates set forth in Schedule I hereto, each such installment to be in an amount computed by multiplying the original principal amount of this Equipment Note by the Original Amount percentage set forth in Schedule I hereto opposite the Payment Date on which such installment is due,]2 and to pay interest in arrears on each Payment Date at the Debt Rate on the principal amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Ratefull. The Original Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1, 1997, and thereafter on April 1 and October 1 of each year, to and including _______________. [Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount principal amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Note.]2 Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day with the same force and effect as if made on such scheduled date, and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during from and after such extensionscheduled date. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may ------------------ 1 To be amended or supplemented from time to time. All other capitalized terms used inserted in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30non-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the installment Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATESTATE OR OTHER JURISDICTION. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE OFFERED FOR SALE OR SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE OR OTHER LAWS OR AN EXEMPTION EXEMPTIONS FROM SUCH REGISTRATIONS IS REGISTRATION REQUIREMENTS ARE AVAILABLE. FIRST SECURITY BANKIN ADDITION, NATIONAL ASSOCIATIONTHIS EQUIPMENT NOTE IS SUBJECT TO RESTRICTIONS ON TRANSFER PURSUANT TO THE PARTICIPATION AGREEMENT REFERRED TO HEREIN. SPIRIT AIRLINES, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES [_____2017-1[__]-[Reg. No.] LIMITED RECOURSE EQUIPMENT NOTE DUE [____MATURITY DATE] ISSUED IN CONNECTION WITH THE BOEING AIRBUS MODEL 737-524 [MODEL] (GENERIC MODEL [GENERIC MODEL]) AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645[REG. NO.] No. __________ Date: [________ DEBT RATE MATURITY DATE __________ __________, ____] $_ SPIRIT AIRLINES, INC. (together with its successors and permitted assigns, the “Company”) hereby promises to pay to _________, or the registered assignee thereof, the principal amount of __________________________ INTEREST RATE MATURITY DATE [___________] [____________] FIRST SECURITY BANK, NATIONAL ASSOCIATION, not in its individual capacity but solely as Owner Trustee Dollars (herein in such capacity called the “Owner Trustee”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust Agreement”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “Original Amount”), together with interest ) [on _______] [in installments on the Payment Dates set forth in Schedule I hereto, each such installment to be in an amount computed by multiplying the original principal amount of Indenture and Security Agreement (Spirit 2017-1 EETC) [Reg. No.] Exhibit 4.9 this Equipment Note by the Original Amount percentage set forth in Schedule I hereto opposite the Payment Date on which such installment is due,] and to pay interest in arrears on each Payment Date at the Debt Rate shown above on the principal amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof hereof, or from the most recent date to which interest hereon has been paid or duly provided for, until paid in full at a rate per annum equal to the Debt Ratefull. The Original Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1, 1997, and thereafter on April 1 and October 1 of each year, to and including _______________. [Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount principal amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. .] Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day with the same force and effect as if made on such scheduled date, and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during from and after such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *scheduled date.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANKUNITED AIR LINES, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES [_____[ ] LIMITED RECOURSE EQUIPMENT NOTE DUE [____[ ] ISSUED IN CONNECTION WITH THE BOEING [BOEING] [AIRBUS] MODEL 737-524 [MODEL#] AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645NXXXUA. No. ____ Date: [__________, ____] $_______________________ MATURITY DATE INTEREST RATE MATURITY DATE [___________[ ]% [ ] [____________] FIRST SECURITY BANKUNITED AIR LINES, NATIONAL ASSOCIATIONINC., not in its individual capacity but solely as Owner Trustee a Delaware corporation (herein in such capacity called the “Owner Trustee”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust AgreementOwner”), hereby promises to pay to __________________WILMINGTON TRUST COMPANY, as Subordination Agent under the Intercreditor Agreement, or the registered assignee thereof, the principal sum of $____________ $ (the “Original Amount”), together with interest on the amount of the Original Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve (12) 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Rate. The Original Amount of this Equipment Note shall be due and payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual arrears in semi-annual installments on January 15 and July 15 of each year commencing on October 1July 15, 1997, and thereafter on April 1 and October 1 of each year, to and including _______________2010. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made due on such scheduled date but shall be made due on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANKUNITED AIRLINES, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES [_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645. No. ____ Date: [__________, ____] $_______________________ INTEREST RATE MATURITY DATE [___________] [____________] FIRST SECURITY BANKUNITED AIRLINES, NATIONAL ASSOCIATIONINC., not in its individual capacity but solely as Owner Trustee a Delaware corporation (herein in such capacity called the “Owner Trustee”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust AgreementOwner”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “Original Amount”), together with interest on the amount of the Original Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Rate. The Original Amount of this Equipment Note shall be due and payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual quarterly installments commencing on October 1January 15, 1997, 2021 and thereafter on January 15, April 1 15, July 15 and October 1 15 of each year, to and including [_______________]. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATESTATE OR OTHER JURISDICTION. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE OFFERED FOR SALE OR SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE OR OTHER LAWS OR AN EXEMPTION EXEMPTIONS FROM SUCH REGISTRATIONS IS REGISTRATION REQUIREMENTS ARE AVAILABLE. FIRST SECURITY BANKIN ADDITION, NATIONAL ASSOCIATIONTHIS EQUIPMENT NOTE IS SUBJECT TO RESTRICTIONS ON TRANSFER PURSUANT TO THE PARTICIPATION AGREEMENT REFERRED TO HEREIN. AMERICAN AIRLINES, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES 2013-1[ ][XXX.XX.] EQUIPMENT NOTE DUE _____] LIMITED RECOURSE EQUIPMENT NOTE DUE [__ __, 20__] _ ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 [MODEL] (GENERIC MODEL [GENERIC MODEL]) AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645[REG. NO.] No. .____ Date: [__________, __,__] $________________ DEBT RATE MATURITY DATE Indenture and Security Agreement (American Airlines 2013-1 Aircraft EETC) [Reg. No.] [________ INTEREST RATE MATURITY DATE []% ___________] [_ ___, 20_________] FIRST SECURITY BANK_ AMERICAN AIRLINES, NATIONAL ASSOCIATIONINC. (together with its successors and permitted assigns, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “Owner TrusteeCompany”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust Agreement”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum amount of $________________ Dollars (the “Original Amount”), together with interest $_________) [on _________]3 [in installments on the Payment Dates set forth in Schedule I hereto, each such installment to be in an amount computed by multiplying the original principal amount of this Equipment Note by the Original Amount percentage set forth in Schedule I hereto opposite the Payment Date on which such installment is due,]4 and to pay, on each Payment Date, interest in arrears on the principal amount remaining unpaid from time to time from the date hereof, or from the most recent date to which interest hereon has been paid or duly provided for, until paid in full at a rate per annum (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Rate shown above[, as such Debt Rate may be changed from time to time as described in the definition of “Debt Rate. The Original Amount of this Equipment Note shall be payable ” in installments on the dates set forth in Schedule I hereto equal Annex A to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I heretoIndenture]5. Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1, 1997, and thereafter on April 1 and October 1 of each year, to and including _______________. [Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount principal amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Note.]6 Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day with the same force and effect as if made on such scheduled date, and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during from and after such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *scheduled date.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “"ACT”"), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANK, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 ___ DATED AS OF SEPTEMBER 30_______________, 1997199_. SERIES [_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 _______ AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645N_____. No. ____ Date: [__________, __199__] $_______________________ INTEREST RATE MATURITY DATE ------------- ------------- [___________] [____________] FIRST SECURITY BANK, NATIONAL ASSOCIATION, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “"Owner Trustee”") under that certain Trust Agreement 645___, dated as of September 30____________, 1997199_, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “"Trust Agreement”"), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “"Original Amount”"), together with interest on the amount of the Original Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Rate. The Original Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1_____________, 1997199_, and thereafter on April 1 [_______] and October 1 [_______] of each year, to and including _______________. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “"ACT”"), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANK, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 ___ DATED AS OF SEPTEMBER 30_______________, 1997199_. SERIES [_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 _______ AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645N_____. No. ____ Date: [[ __________, 199_____ ] $_______________________ ----------------------- INTEREST RATE MATURITY DATE ------------- ------------- [___________-----------] [____________------------] FIRST SECURITY BANK, NATIONAL ASSOCIATION, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “"Owner Trustee”") under that certain Trust Agreement 645___, dated as of September 30____________, 1997199_, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “"Trust Agreement”"), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “"Original Amount”"), together with interest on the amount of the Original Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Rate. The Original Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1_____________, 1997199_, and thereafter on April 1 and October 1 of each year, to and including _______________. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “"ACT”"), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANK, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 [___] DATED AS OF SEPTEMBER 30[_______________, 199720__]. SERIES [_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 [_______] AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645N[_____]. No. ____ Date: [__________, ____] $_______________________ INTEREST RATE MATURITY DATE [____________] [____________] FIRST SECURITY BANK, NATIONAL ASSOCIATION, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “"Owner Trustee”") under that certain Trust Agreement 645[___], dated as of September 30[____________, 199720__], between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “"Trust Agreement”"), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “"Original Amount”"), together with interest on the amount of the Original Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Rate. The Original Amount of this Equipment Note shall be [payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. .] [paid in full on _______.] Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1[_____________], 199720[__], and thereafter on April 1 [_______] and October 1 [_______] of each year, to and including [_______________]. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATESTATE OR OTHER JURISDICTION. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE OFFERED FOR SALE OR SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE OR OTHER LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS REGISTRATION REQUIREMENTS IS AVAILABLE. FIRST SECURITY BANKIN ADDITION, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST THIS EQUIPMENT NOTE IS SUBJECT TO RESTRICTIONS ON TRANSFER PURSUANT TO THE PARTICIPATION AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997REFERRED TO HEREIN. JETBLUE AIRWAYS CORPORATION SERIES [_____2020-1[ ]-[ ] LIMITED RECOURSE EQUIPMENT NOTE DUE [____MATURITY DATE] ISSUED IN CONNECTION WITH THE BOEING AIRBUS MODEL 737A321-524 231 (GENERIC MANUFACTURER AND MODEL AIRBUS MODEL A321) AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645. N946JL No. ____ Date: [__________, ____] $_______________________ INTEREST DEBT RATE MATURITY DATE [___________] [____________] FIRST SECURITY BANKJETBLUE AIRWAYS CORPORATION (together with its successors and permitted assigns, NATIONAL ASSOCIATION, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “Owner TrusteeCompany”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust Agreement”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum amount of $____________ Indenture and Security Agreement (the “Original Amount”), together with interest 2020-1 EETC) N946JL Dollars ($ ) [on ]1 [in installments on the Payment Dates set forth in Schedule I hereto, each such installment to be in an amount computed by multiplying the original principal amount of this Equipment Note by the Original Amount percentage set forth in Schedule I hereto opposite the Payment Date on which such installment is due,]2 and to pay interest in arrears on each Payment Date at the Debt Rate shown above on the principal amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof hereof, or from the most recent date to which interest hereon has been paid or duly provided for, until paid in full at a rate per annum equal to the Debt Ratefull. The Original Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1, 1997, and thereafter on April 1 and October 1 of each year, to and including _______________. [Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount principal amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Note.]3 Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day with the same force and effect as if made on such scheduled date, and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during from and after such extensionscheduled date. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645Security Agreement (N946JL), dated as of September 30August 17, 19972020, between the Owner Trustee Company and Wilmington Trust Company Company, as Loan Trustee (the “MortgageeLoan Trustee”), as the same may be amended amended, supplemented or supplemented otherwise modified from time to timetime in accordance with its terms. All other capitalized terms used in this Equipment Note and not defined herein herein, unless the context otherwise requires, shall have the respective meanings assigned set forth or incorporated by reference, and shall be construed and interpreted in the Trust manner described, in the Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Past Due Rate (and not the Debt Rate) (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue principal amount and (to the extent permitted by applicable law) Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest interest, and any other amounts payable hereunder not paid when due for any period during which are the same is overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid in the manner provided herein or in the Indenture when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this 1 To be inserted in non-installment Equipment Note shall Notes. 2 To be subject to adjustments to the extent, inserted in installment Equipment Notes. 3 To be inserted in installment Equipment Notes. Indenture and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, MakeSecurity Agreement (2020-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b1 EETC) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. N946JL There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee Loan Trustee, or at the office of any successor trustee, in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount principal amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the MortgageeLoan Trustee, or as otherwise provided in the Trust Indenture. Company shall not have any responsibility for the distribution of any such payment to Noteholder of this Equipment Note. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the this Equipment Note shall be surrendered promptly thereafter to the Mortgagee Loan Trustee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, including the subordination provisions referred to below, each payment of the Original Amountan installment of principal amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, : first, to the payment of accrued interest on this Equipment Note (as well as any interest on (i) any overdue Original Amountprincipal amount, and (ii) to the extent permitted by applicable law, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and any other overdue amounts hereunder) to the date of such payment, ; second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other with respect to this Equipment Note; third, to the payment of the principal amount of this Equipment Note (or portion thereof) then due hereunder or under the Trust Indenturehereunder, if any; and fourth, the balance, if any, remaining thereafter, thereafter to the payment of installments of the Original Amount principal amount of this Equipment Note (or portion thereof) remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee Company pursuant to the terms of the Trust Indenture. The Trust Indenture Estate Collateral is held by the Mortgagee Loan Trustee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture, the Related Indentures, the Participation Agreement, the other Operative Documents and the Pass Through Documents. Reference is hereby made to the Trust Indenture Indenture, the Related Indentures, the Participation Agreement, the other Operative Documents and the Pass Through Documents for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note (including as a “Related Equipment Note” under each Related Indenture) and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture Indenture, the Related Indentures, the Participation Agreement, the other Operative Documents and the Pass Through Documents each holder hereof agrees by its acceptance of this Equipment Note. Indenture and Security Agreement (2020-1 EETC) N946JL As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like an equal aggregate Original Amount principal amount of Equipment Notes of the same Series of different authorized denominations, as requested by the holder surrendering the same. Prior to the due presentment for registration of transfer of this Equipment Note, the Owner Company and Loan Trustee shall deem and the Mortgagee shall treat the person Person in whose name this Equipment Note is registered on the Equipment Note Register as the absolute owner and holder hereof for the purpose of receiving all amounts payable with respect to this Equipment Note and for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Company nor Loan Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 4.02 of the Trust Indenture. [This Equipment Note is subject to certain restrictions set forth in Sections 4.01(a)(ii) and 4.01(a)(iii) of the Intercreditor Agreement, as further specified in Section 2.07 of the Indenture, to all of which terms and conditions in the Intercreditor Agreement each holder hereof agrees by its acceptance of this Equipment Note. The holder hereof, by its acceptance of this Equipment Note, agrees that no payment or distribution shall be made on or in respect of the Secured Obligations (as defined in the Indenture) or the Secured Obligations (as defined in any Related Indenture) owed to such holder, including, without limitation, any payment or distribution of cash, property or securities after the occurrence of any of the events referred to in Section 4.01(f) of the Indenture or after the commencement of any proceedings of the type referred to in Section 4.01 (g), (h) or (i) of the Indenture, except, in each case, as expressly provided in Article III of the Indenture or Article III of the applicable Related Indenture, as appropriate. The indebtedness evidenced by this Equipment Note is, is[,]4 [(i) to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 Notes]5 [Series A Equipment Notes and Series B Equipment Notes],2 Notes]6 [Series A 4 To be inserted in the case of a Series A Equipment Note. 5 To be inserted in the case of a Series B Equipment Note. 6 To be inserted in the case of the Series of Additional Series Equipment Notes ranked most senior in priority of payment among all Series of Additional Series Equipment Notes. Indenture and Security Agreement (2020-1 EETC) N946JL Equipment Notes, Series B Equipment Notes and [ ]7]8, and certain other Secured Obligations, and (ii)]9 to the extent and in the manner provided in each Related Indenture, subordinate and subject in right of payment to the prior payment in full under such Related Indenture of the “Secured Obligations” in respect of the “Equipment Notes” issued under such Related Indenture, and this Equipment Note is issued subject to such provisions. The Note Holder Noteholder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs Loan Trustee or the Mortgagee Related Loan Trustee under the applicable Related Indenture, as appropriate, on his such Noteholder’s behalf to take such any action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture or the applicable Related Indenture and (c) appoints Loan Trustee or the Mortgagee his Related Loan Trustee under the applicable Related Indenture, as appropriate, as such Noteholder’s attorney-in-fact for such purpose.]3 purpose. Without limiting the foregoing, the holder hereof, by its acceptance of this Equipment Note, agrees that if such holder, in its capacity as a Noteholder, receives any payment or distribution on any Secured Obligation in respect of this Equipment Note that it is not entitled to receive under Section 2.13 or Article III of the Indenture, it shall hold any amount so received in trust for Loan Trustee and forthwith turn over such amount to Loan Trustee in the form received to be applied as provided in Article III of the Indenture. Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee Loan Trustee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. 7 To insert each Series of Additional Series Equipment Notes that rank senior in priority of payment to the Series of Additional Series Equipment Notes being issued. 8 To be inserted in the case of each Series of Additional Series Equipment Notes other than the Series of Additional Series Equipment Notes ranked most senior in priority of payment among all Series of Additional Series Equipment Notes. 9 To be inserted in the case of a Series B Equipment Note or an Additional Series Equipment Note. Indenture and Security Agreement (2020-1 EETC) N946JL THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS LAW OF THE STATE OF NEW YORK. * * *, INCLUDING ALL MATTERS OF CONSTRUCTION, VALIDITY AND PERFORMANCE.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATESTATE OR OTHER JURISDICTION. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE OFFERED FOR SALE OR SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE OR OTHER LAWS OR AN EXEMPTION EXEMPTIONS FROM SUCH REGISTRATIONS IS REGISTRATION REQUIREMENTS ARE AVAILABLE. FIRST SECURITY BANKIN ADDITION, NATIONAL ASSOCIATIONTHIS EQUIPMENT NOTE IS SUBJECT TO RESTRICTIONS ON TRANSFER PURSUANT TO THE PARTICIPATION AGREEMENT REFERRED TO HEREIN. DELTA AIR LINES, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES 2011-1[__]-[_____] LIMITED RECOURSE Indenture and Security Agreement (2011-1 EETC) [Reg. No.] 10 EQUIPMENT NOTE DUE [____MATURITY DATE] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 [MODEL] (GENERIC MODEL [GENERIC MODEL]) AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645[REG. NO.] No. __________ Date: [________ DEBT RATE MATURITY DATE __________ __________, ____] $_ DELTA AIR LINES, INC. (together with its successors and permitted assigns, “Company”) hereby promises to pay to , or the registered assignee thereof, the principal amount of __________________________ INTEREST RATE MATURITY DATE [___________] [____________] FIRST SECURITY BANK, NATIONAL ASSOCIATION, not in its individual capacity but solely as Owner Trustee Dollars (herein in such capacity called the “Owner Trustee”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust Agreement”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “Original Amount”), together with interest ) [on _______] 3 [in installments on the Payment Dates set forth in Schedule I hereto, each such installment to be in an amount computed by multiplying the original principal amount of this Equipment Note by the Original Amount percentage set forth in Schedule I hereto opposite the Payment Date on which such installment is due,] 4 and to pay interest in arrears on each Payment Date at the Debt Rate shown above on the principal amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof hereof, or from the most recent date to which interest hereon has been paid or duly provided for, until paid in full at a rate per annum equal to the Debt Ratefull. The Original Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1, 1997, and thereafter on April 1 and October 1 of each year, to and including _______________. [Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount principal amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. .] 5 Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day with the same force and effect as if made on such scheduled date, and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during from and after such extensionscheduled date. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may 3 To be amended or supplemented from time to time. All other capitalized terms used inserted in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30non-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the installment Equipment Notes. The provisions of this 4 To be inserted in installment Equipment Note are subject to the Trust IndentureNotes. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this 5 To be inserted in installment Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment NoteNotes. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the sameSecurity Agreement (2011-1 EETC) [Reg. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *No.]

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANKTRUST INDENTURE 16-1 BACK UNITED AIRLINES, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES [_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 [_____] AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645. N[_____] No. ____ Date: [__________, ____] $_______________________ INTEREST RATE MATURITY DATE [___________] [____________] FIRST SECURITY BANKUNITED AIRLINES, NATIONAL ASSOCIATIONINC., not in its individual capacity but solely as Owner Trustee a Delaware corporation (herein in such capacity called the “Owner Trustee”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust AgreementOwner”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “Original Amount”), together with interest on the amount of the Original Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Rate. The Original Amount of this Equipment Note shall be due and payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual semi-annual installments commencing on October 1, 1997, [_______]1 and thereafter on April 1 [January 7 and October 1 July 7]2 of each year, to and including [_______________]. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATESTATE OR OTHER JURISDICTION. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE OFFERED FOR SALE OR SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE OR OTHER LAWS OR AN EXEMPTION EXEMPTIONS FROM SUCH REGISTRATIONS IS REGISTRATION REQUIREMENTS ARE AVAILABLE. FIRST SECURITY BANKIN ADDITION, NATIONAL ASSOCIATIONTHIS EQUIPMENT NOTE IS SUBJECT TO RESTRICTIONS ON TRANSFER PURSUANT TO THE PARTICIPATION AGREEMENT REFERRED TO HEREIN. DELTA AIR LINES, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES [_____2019-1[ ]-[ ] LIMITED RECOURSE EQUIPMENT NOTE DUE [____MATURITY DATE] ISSUED IN CONNECTION WITH THE BOEING AIRBUS MODEL 737A321-524 211 (GENERIC Indenture and Security Agreement (2019-1 EETC) N360DN MANUFACTURER AND MODEL AIRBUS MODEL A321) AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645. N360DN No. ____ Date: [__________, ____] $_______________________ INTEREST RATE MATURITY DATE [Date: ___________] [____________] FIRST SECURITY BANK_ DEBT RATE MATURITY DATE DELTA AIR LINES, NATIONAL ASSOCIATIONINC. (together with its successors and permitted assigns, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “Owner TrusteeCompany”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust Agreement”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum amount of $____________ Dollars (the “Original Amount”), together with interest $ ) [on ]1 [in installments on the Payment Dates set forth in Schedule I hereto, each such installment to be in an amount computed by multiplying the original principal amount of this Equipment Note by the Original Amount percentage set forth in Schedule I hereto opposite the Payment Date on which such installment is due,]2 and to pay interest in arrears on each Payment Date at the Debt Rate shown above on the principal amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof hereof, or from the most recent date to which interest hereon has been paid or duly provided for, until paid in full at a rate per annum equal to the Debt Ratefull. The Original Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1, 1997, and thereafter on April 1 and October 1 of each year, to and including _______________. [Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount principal amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Note.]3 Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day with the same force and effect as if made on such scheduled date, and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during from and after such extensionscheduled date. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645Security Agreement (N360DN), dated as of September 30March 13, 19972019, between the Owner Company and U.S. Bank Trust National Association, as Loan Trustee and Wilmington Trust Company (the “MortgageeLoan Trustee”), as the same may be amended amended, supplemented or supplemented otherwise modified from time to timetime in accordance with its terms. All other capitalized terms used in this Equipment Note and not defined herein herein, unless the context otherwise requires, shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if anyset forth or incorporated by reference, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, construed and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor interpreted in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgageedescribed, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATESTATE OR OTHER JURISDICTION. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE OFFERED FOR SALE OR SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE OR OTHER LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS REGISTRATION REQUIREMENTS IS AVAILABLE. FIRST SECURITY BANKIN ADDITION, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST THIS EQUIPMENT NOTE IS SUBJECT TO RESTRICTIONS ON TRANSFER PURSUANT TO THE PARTICIPATION AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997REFERRED TO HEREIN. FEDERAL EXPRESS CORPORATION SERIES [_____] LIMITED RECOURSE 2020-1AA-N869FD EQUIPMENT NOTE DUE [____] FEBRUARY 20, 2034 ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 777FS2 GENERIC MANUFACTURER AND MODEL BOEING MODEL 777F AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645. N869FD No. __________ Date: [________ DEBT RATE MATURITY DATE __________ __________, ____] $_ FEDERAL EXPRESS CORPORATION (together with its successors and permitted assigns, “Company”) hereby promises to pay to , or the registered assignee thereof, the principal amount of __________________________ INTEREST RATE MATURITY DATE [___________] [____________] FIRST SECURITY BANK, NATIONAL ASSOCIATION, not in its individual capacity but solely as Owner Trustee Dollars (herein in such capacity called the “Owner Trustee”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust Agreement”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “Original Amount”), together with interest ) in installments on the Payment Dates set forth in Schedule I hereto, each such installment to be in an amount computed by multiplying the original principal amount of this Equipment Note by the Original Amount percentage set forth in Schedule I hereto opposite the Payment Date on which such installment is due, and to pay interest in arrears on each Payment Date at the Debt Rate shown above on the principal amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof hereof, or from the most recent date to which interest hereon has been paid or duly provided for, until paid in full at a rate per annum equal to the Debt Rate. The Original Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1, 1997, and thereafter on April 1 and October 1 of each year, to and including _______________full. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount principal amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day with the same force and effect as if made on such scheduled date, and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during from and after such extensionscheduled date. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645Security Agreement (N869FD), dated as of September 30August 13, 19972020, between the Owner Trustee Company and Wilmington Trust Company Company, as Loan Trustee (the “MortgageeLoan Trustee”), as the same may be amended amended, supplemented or supplemented otherwise modified from time to timetime in accordance with its terms. All other capitalized terms used in this Equipment Note and not defined herein herein, unless the context otherwise requires, shall have the respective meanings assigned set forth or incorporated by reference, and shall be construed and interpreted in the Trust manner described, in the Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Past Due Rate (and not the Debt Rate) (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue principal amount and (to the extent permitted by applicable law) Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest interest, and any other amounts payable hereunder not paid when due for any period during which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid in the manner provided herein or in the Indenture when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee Loan Trustee, or at the office of any successor trustee, in the manner provided in Section ‎Section 2.07 of the Trust Indenture. The Original Amount principal amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the MortgageeLoan Trustee, or as otherwise provided in the Trust Indenture. Company shall not have any responsibility for the distribution of any such payment to Noteholder of this Equipment Note. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the this Equipment Note shall be surrendered promptly thereafter to the Mortgagee Loan Trustee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, including the subordination provisions referred to below, each payment of the Original Amountan installment of principal amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, : first, to the payment of accrued interest on this Equipment Note (as well as any interest on (i) any overdue Original Amountprincipal amount, and (ii) to the extent permitted by applicable law, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and any other overdue amounts hereunder) to the date of such payment, ; second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other with respect to this Equipment Note; third, to the payment of the principal amount of this Equipment Note (or portion thereof) then due hereunder or under the Trust Indenturehereunder, if any; and fourth, the balance, if any, remaining thereafter, thereafter to the payment of installments of the Original Amount principal amount of this Equipment Note (or portion thereof) remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee Company pursuant to the terms of the Trust Indenture. The Trust Indenture Estate Collateral is held by the Mortgagee Loan Trustee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture, the Related Indentures, the Participation Agreement, the other Operative Documents and the Pass Through Documents. Reference is hereby made to the Trust Indenture Indenture, the Related Indentures, the Participation Agreement, the other Operative Documents and the Pass Through Documents for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note (including as a “Related Equipment Note” under each Related Indenture) and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture Indenture, the Related Indentures, the Participation Agreement, the other Operative Documents and the Pass Through Documents each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like an equal aggregate Original Amount principal amount of Equipment Notes of the same Series of different authorized denominations, as requested by the holder surrendering the same. Prior to the due presentment for registration of transfer of this Equipment Note, the Owner Company and Loan Trustee shall deem and the Mortgagee shall treat the person Person in whose name this Equipment Note is registered on the Equipment Note Register as the absolute owner and holder hereof for the purpose of receiving all amounts payable with respect to this Equipment Note and for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Company nor Loan Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10‎2.10, 2.11 ‎2.11 and 2.12 ‎2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 ‎Section 4.02 of the Trust Indenture. [This Equipment Note is subject to certain restrictions set forth in Sections 4.01(a)(ii) and 4.01(a)(iii) of the Intercreditor Agreement, as further specified in ‎Section 2.07 of the Indenture, to all of which terms and conditions in the Intercreditor Agreement each holder hereof agrees by its acceptance of this Equipment Note. The holder hereof, by its acceptance of this Equipment Note, agrees that no payment or distribution shall be made on or in respect of the Secured Obligations (as defined in the Indenture) or the Secured Obligations (as defined in any Related Indenture) owed to such holder, including, without limitation, any payment or distribution of cash, property or securities after the occurrence of any of the events referred to in ‎Section 4.01(f) of the Indenture or after the commencement of any proceedings of the type referred to in Sections ‎4.01(g), ‎(h) or ‎(i) of the Indenture, except, in each case, as expressly provided in Article ‎III of the Indenture or Article ‎III of the applicable Related Indenture, as appropriate. The indebtedness evidenced by this Equipment Note is, is[,]1 [(i) to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A AA Equipment Notes]1 Notes]2 [Series A AA Equipment Notes and Series B [ ]3]4, and certain other Secured Obligations, and (ii)]5 to the extent and in the manner provided in each Related Indenture, subordinate and subject in right of payment to the prior payment in full under such Related Indenture of the “Secured Obligations” in respect of the “Equipment Notes],2 Notes” issued under such Related Indenture, and this Equipment Note is issued subject to such provisions. The Note Holder Noteholder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs Loan Trustee or the Mortgagee Related Loan Trustee under the applicable Related Indenture, as appropriate, on his such Noteholder’s behalf to take such any action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture or the applicable Related Indenture and (c) appoints Loan Trustee or the Mortgagee his Related Loan Trustee under the applicable Related Indenture, as appropriate, as such Noteholder’s attorney-in-fact for such purpose.]3 purpose. Without limiting the foregoing, the holder hereof, by its acceptance of this Equipment Note, agrees that if such holder, in its capacity as a Noteholder, receives any payment or distribution on any Secured Obligation in respect of this Equipment Note that it is not entitled to receive under ‎Section 2.13 or Article ‎III of the Indenture, it shall hold any amount so received in trust for Loan Trustee and forthwith turn over such amount to Loan Trustee in the form received to be applied as provided in Article ‎III of the Indenture. Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee Loan Trustee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS LAW OF THE STATE OF NEW YORK, INCLUDING ALL MATTERS OF CONSTRUCTION, VALIDITY AND PERFORMANCE. * * *1 To be inserted in the case of a Series AA Equipment Note. 2 To be inserted in the case of the Series of Additional Series Equipment Notes ranked most senior in priority of payment among all Series of Additional Series Equipment Notes. 3 To insert each Series of Additional Series Equipment Notes that rank senior in priority of payment to the Series of Additional Series Equipment Notes being issued. 4 To be inserted in the case of each Series of Additional Series Equipment Notes other than the Series of Additional Series Equipment Notes ranked most senior in priority of payment among all Series of Additional Series Equipment Notes. 5 To be inserted in the case of an Additional Series Equipment Note.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “"ACT”"), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANK, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 [___] DATED AS OF SEPTEMBER 30[_______________, 1997199_]. SERIES [_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 [_______] AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645N[_____]. No. ____ Date: [__________, ____] $_______________________ INTEREST RATE MATURITY DATE [___________] [_____________] FIRST SECURITY BANK, NATIONAL ASSOCIATION, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “"Owner Trustee”") under that certain Trust Agreement 645[___], dated as of September 30[____________, 1997199_], between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “"Trust Agreement”"), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “"Original Amount”"), together with interest on the amount of the Original Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Rate. The Original Amount of this Equipment Note shall be [payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. .] [paid in full on _______.] Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1[_____________], 1997199[_], and thereafter on April 1 [_______] and October 1 [_______] of each year, to and including [_______________]. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATESTATE OR OTHER JURISDICTION. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE OFFERED FOR SALE OR SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE OR OTHER LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS REGISTRATION REQUIREMENTS IS AVAILABLE. FIRST SECURITY BANKIN ADDITION, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST THIS EQUIPMENT NOTE IS SUBJECT TO RESTRICTIONS ON TRANSFER PURSUANT TO THE PARTICIPATION AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997REFERRED TO HEREIN. JETBLUE AIRWAYS CORPORATION SERIES [_____2020-1[ ]-[ ] LIMITED RECOURSE EQUIPMENT NOTE DUE [____MATURITY DATE] ISSUED IN CONNECTION WITH THE BOEING AIRBUS MODEL 737A321-524 271NX (GENERIC MANUFACTURER AND MODEL AIRBUS MODEL A321) AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645. N2002J No. ____ Date: [__________, ____] $_______________________ INTEREST DEBT RATE MATURITY DATE [___________] [____________] FIRST SECURITY BANKJETBLUE AIRWAYS CORPORATION (together with its successors and permitted assigns, NATIONAL ASSOCIATION, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “Owner TrusteeCompany”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust Agreement”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum amount of $____________ Indenture and Security Agreement (the “Original Amount”), together with interest 2020-1 EETC) N2002J Dollars ($ ) [on ]1 [in installments on the Payment Dates set forth in Schedule I hereto, each such installment to be in an amount computed by multiplying the original principal amount of this Equipment Note by the Original Amount percentage set forth in Schedule I hereto opposite the Payment Date on which such installment is due,]2 and to pay interest in arrears on each Payment Date at the Debt Rate shown above on the principal amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof hereof, or from the most recent date to which interest hereon has been paid or duly provided for, until paid in full at a rate per annum equal to the Debt Ratefull. The Original Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1, 1997, and thereafter on April 1 and October 1 of each year, to and including _______________. [Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount principal amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Note.]3 Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day with the same force and effect as if made on such scheduled date, and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during from and after such extensionscheduled date. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645Security Agreement (N2002J), dated as of September 30August 17, 19972020, between the Owner Trustee Company and Wilmington Trust Company Company, as Loan Trustee (the “MortgageeLoan Trustee”), as the same may be amended amended, supplemented or supplemented otherwise modified from time to timetime in accordance with its terms. All other capitalized terms used in this Equipment Note and not defined herein herein, unless the context otherwise requires, shall have the respective meanings assigned set forth or incorporated by reference, and shall be construed and interpreted in the Trust manner described, in the Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Past Due Rate (and not the Debt Rate) (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue principal amount and (to the extent permitted by applicable law) Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest interest, and any other amounts payable hereunder not paid when due for any period during which are the same is overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid in the manner provided herein or in the Indenture when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “"ACT”"), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANKXXXXX FARGO BANK NORTHWEST, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 [___] DATED AS OF SEPTEMBER 30[_______________, 199720__]. SERIES [_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 [_______] AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645N[_____]. No. ____ Date: [__________, ____] $_______________________ INTEREST RATE MATURITY DATE [___________] [____________] FIRST SECURITY BANKXXXXX FARGO BANK NORTHWEST, NATIONAL ASSOCIATION, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “"Owner Trustee”") under that certain Trust Agreement 645[___], dated as of September 30[____________, 199720__], between the Owner Participant named therein and First Security BankXxxxx Fargo Bank Northwest, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “"Trust Agreement”"), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “"Original Amount”"), together with interest on the amount of the Original Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Rate. The Original Amount of this Equipment Note shall be [payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. .] [paid in full on _______.] Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1[_____________], 199720[__], and thereafter on April 1 [_______] and October 1 [_______] of each year, to and including [_______________]. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “"ACT”"), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANK, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 [___] DATED AS OF SEPTEMBER 30[_______________, 1997199_]. SERIES [_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 [_______] AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645N[_____]. No. ____ Date: [[ __________, __199__] $_______________________ INTEREST RATE MATURITY DATE [_____________] [____________] FIRST SECURITY BANK, NATIONAL ASSOCIATION, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “"Owner Trustee”") under that certain Trust Agreement 645[___], dated as of September 30[____________, 1997199_], between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “"Trust Agreement”"), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “"Original Amount”"), together with interest on the amount of the Original Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Rate. The Original Amount of this Equipment Note shall be [payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1, 1997, and thereafter on April 1 and October 1 of each year, to and including _______________. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge .] [paid in full the unpaid Original Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent ---------- Not included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income Series A-2 or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Series C-2 Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “"ACT”"), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANKXXXXX FARGO BANK NORTHWEST, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 [___] DATED AS OF SEPTEMBER 30[_______________, 199720___]. SERIES [_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 [_______] AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645N[_____]. No. ____ Date: [[ __________, _20___] $_______________________ INTEREST RATE MATURITY DATE ------------- ------------- [____________] [____________] FIRST SECURITY BANKXXXXX FARGO BANK NORTHWEST, NATIONAL ASSOCIATION, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “"Owner Trustee”") under that certain Trust Agreement 645[___], dated as of September 30[____________, 199720___], between the Owner Participant named therein and First Security BankXxxxx Fargo Bank Northwest, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “"Trust Agreement”"), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “"Original Amount”"), together with interest on the amount of the Original Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Rate. The Original Amount of this Equipment Note shall be [payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. .] [paid in full on ____________.] Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1[_____________, 199720___], and thereafter on April 1 [_______] and October 1 [_______] of each year, to and including [_______________]. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “"ACT”"), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANK, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 [___] DATED AS OF SEPTEMBER 30[_______________, 199720___]. SERIES [_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 [_______] AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645N[_____]. No. ____ Date: [[ __________, 20_____ ] $_______________________ INTEREST RATE MATURITY DATE [_____________] [____________] FIRST SECURITY BANK, NATIONAL ASSOCIATION, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “"Owner Trustee”") under that certain Trust Agreement 645[___], dated as of September 30[____________, 199720___], between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “"Trust Agreement”"), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “"Original Amount”"), together with interest on the amount of the Original Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Rate. The Original Amount of this Equipment Note shall be [payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto.] [paid in full -------------------- Not included in Series A-2 or Series C-2 Equipment Notes. on ____________.] Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1[_____________, 199720___], and thereafter on April 1 [_______] and October 1 [_______] of each year, to and including [_______________]. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “"ACT”"), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANKUS AIRWAYS, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES [_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 AIRBUS A330-__ AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645_____. No. .____ Date: [__________, __,__] $_______________________ INTEREST RATE MATURITY DATE [___________] [___________,_____] FIRST SECURITY BANKUS AIRWAYS, NATIONAL ASSOCIATION, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “Owner Trustee”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust Agreement”)INC., hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “Original "Principal Amount”"), together with interest on the amount of the Original Principal Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt RateInterest Rate indicated above. The Original Principal Amount of this Equipment Note shall be payable in installments on the dates set forth and in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note installments as set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual semi- annual installments commencing on October 1_______ 20, 1997____, and thereafter on April 1 February 20 and October 1 August 20 of each year, to and including __________, _____. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Principal Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, Day then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day with the same force and effect as if made on such scheduled date and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during from and after such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *scheduled date.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANKSUN COUNTRY, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES [_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 800 AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645. N[_____] TRUST INDENTURE 22-1 (A and B) 4 No. ____ Date: [__________, ____] $_______________________ INTEREST RATE MATURITY DATE [___________] [____________] FIRST SECURITY BANKSUN COUNTRY, NATIONAL ASSOCIATIONINC., not in its individual capacity but solely as Owner Trustee a Minnesota corporation (herein in such capacity called the “Owner Trustee”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust AgreementOwner”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “Original Amount”), together with interest on the amount of the Original Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Rate. The Original Amount of this Equipment Note shall be due and payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual semi-annual installments commencing on October 1, 1997, [_______]1 and thereafter on April 1 [March 15 and October 1 September 15]2 of each year, to and including [_______________]. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “"ACT”"), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANKUS AIRWAYS, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES [_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 AIRBUS A- AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645_____. No. .____ Date: [__________, __,__] $_______________________ INTEREST RATE MATURITY DATE [___________] [___________,_____] FIRST SECURITY BANKUS AIRWAYS, NATIONAL ASSOCIATION, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “Owner Trustee”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust Agreement”)INC., hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “Original "Principal Amount”"), together with interest on the amount of the Original Principal Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt RateInterest Rate indicated above. The Original Principal Amount of this Equipment Note shall be payable in installments on the dates set forth and in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note installments as set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual semi-annual installments commencing on October 1_______ 20, 1997____, and thereafter on April 1 January 20 and October 1 July 20 of each year, to and including __________, _____. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Principal Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, Day then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day with the same force and effect as if made on such scheduled date and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during from and after such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *scheduled date.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “"ACT”"), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATESTATE OR OTHER JURISDICTION. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE OFFERED FOR SALE OR SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE OR OTHER LAWS OR AN EXEMPTION EXEMPTIONS FROM SUCH REGISTRATIONS IS REGISTRATION REQUIREMENTS ARE AVAILABLE. FIRST SECURITY BANK5 AMERICAN AIRLINES, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES 2001 [_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 [______] AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645. N[_____]AN No. .____ Date: [__________, __,__] $_______________________ INTEREST RATE MATURITY DATE [___________] [___________,____] FIRST SECURITY BANKAMERICAN AIRLINES, NATIONAL ASSOCIATIONINC. (together with its successors and permitted assigns, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “Owner Trustee”"Company") under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust Agreement”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum amount of $________________ Dollars (the “Original Amount”), together with interest $_________) [on __________](1) [in installments on the Payment Dates set forth in Schedule I hereto, each such installment to be in an amount computed by multiplying the original principal amount of this Equipment Note by the Original Amount percentage set forth in Schedule I hereto opposite the Payment Date on which such installment is due,]2 and to pay interest in arrears on each Payment Date at the Debt Rate on the principal amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Ratefull. The Original Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1, 1997, and thereafter on April 1 and October 1 of each year, to and including _______________. [Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount principal amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Note.](2) Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day with the same force and effect as if made on such scheduled date, and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during from and after such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *scheduled date.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATESTATE OR OTHER JURISDICTION. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE OFFERED FOR SALE OR SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE OR OTHER LAWS OR AN EXEMPTION EXEMPTIONS FROM SUCH REGISTRATIONS IS REGISTRATION REQUIREMENTS ARE AVAILABLE. FIRST SECURITY BANKIN ADDITION, NATIONAL ASSOCIATIONTHIS EQUIPMENT NOTE IS SUBJECT TO RESTRICTIONS ON TRANSFER PURSUANT TO THE PARTICIPATION AGREEMENT REFERRED TO HEREIN. AMERICAN AIRLINES, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES 2016-1[ ][_____XXX.XX.] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] , 20 ISSUED IN CONNECTION WITH THE BOEING [AIRBUS] [BOEING] MODEL 737-524 [MODEL] (GENERIC MODEL [GENERIC MODEL]) AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645[REG. NO.] No. ____ Date: [__________[ , ____] $_______________________ INTEREST $ DEBT RATE MATURITY DATE [___________] [____________] FIRST SECURITY BANK[ ]% , NATIONAL ASSOCIATION20 AMERICAN AIRLINES, not in INC. (together with its individual capacity but solely as Owner Trustee (herein in such capacity called successors and permitted assigns, the “Owner TrusteeCompany”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust Agreement”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum amount of $____________ Dollars (the “Original Amount”), together with interest $ ) [on ]5 [in installments on the Payment Dates set forth in Schedule I hereto, each such installment to be in an amount computed by multiplying the original principal amount of this Equipment Note by the Original Amount percentage set forth in Schedule I hereto opposite 5 To be inserted in non-installment Equipment Notes. Indenture and Security Agreement (American Airlines 2016-1 Aircraft EETC) [Reg. No.] the Payment Date on which such installment is due,]6 and to pay, on each Payment Date, interest in arrears on the principal amount remaining unpaid from time to time from the date hereof, or from the most recent date to which interest hereon has been paid or duly provided for, until paid in full at a rate per annum (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt RateRate shown above. The Original Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1, 1997, and thereafter on April 1 and October 1 of each year, to and including _______________. [Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount principal amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Note.]7 Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day with the same force and effect as if made on such scheduled date, and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during from and after such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *scheduled date.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATESTATE OR OTHER JURISDICTION. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE OFFERED FOR SALE OR SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE OR OTHER LAWS OR AN EXEMPTION EXEMPTIONS FROM SUCH REGISTRATIONS IS REGISTRATION REQUIREMENTS ARE AVAILABLE. FIRST SECURITY BANKIN ADDITION, NATIONAL ASSOCIATIONTHIS EQUIPMENT NOTE IS SUBJECT TO RESTRICTIONS ON TRANSFER PURSUANT TO THE PARTICIPATION AGREEMENT REFERRED TO HEREIN. AMERICAN AIRLINES, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES 2009-1[ ][_____XXX.XX.] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] , 20 ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 [MODEL] (GENERIC MODEL [GENERIC MODEL]) AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645[REG. NO.] No. ____ Date: [__________[ , ____] $_______________________ INTEREST $ DEBT RATE MATURITY DATE [ ]% , 20 Indenture and Security Agreement (2009-1 Aircraft EETC) [___________Reg. No.] [____________] FIRST SECURITY BANKAMERICAN AIRLINES, NATIONAL ASSOCIATIONINC. (together with its successors and permitted assigns, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “Owner TrusteeCompany”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust Agreement”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum amount of $____________ Dollars (the “Original Amount”), together with interest $ ) [on ]3 [in installments on the Payment Dates set forth in Schedule I hereto, each such installment to be in an amount computed by multiplying the original principal amount of this Equipment Note by the Original Amount percentage set forth in Schedule I hereto opposite the Payment Date on which such installment is due,]4 and to pay, on each Payment Date, interest in arrears on the principal amount remaining unpaid from time to time from the date hereof, or from the most recent date to which interest hereon has been paid or duly provided for, until paid in full at a rate per annum (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt RateRate shown above. The Original Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1, 1997, and thereafter on April 1 and October 1 of each year, to and including _______________. [Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount principal amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Note.]5 Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day with the same force and effect as if made on such scheduled date, and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during from and after such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *scheduled date.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATESTATE OR OTHER JURISDICTION. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE OFFERED FOR SALE OR SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE OR OTHER LAWS OR AN EXEMPTION EXEMPTIONS FROM SUCH REGISTRATIONS IS REGISTRATION REQUIREMENTS ARE AVAILABLE. FIRST SECURITY BANKIN ADDITION, NATIONAL ASSOCIATIONTHIS EQUIPMENT NOTE IS SUBJECT TO RESTRICTIONS ON TRANSFER PURSUANT TO THE PARTICIPATION AGREEMENT REFERRED TO HEREIN. AMERICAN AIRLINES, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES [2011-1[___][XXX.XX.] EQUIPMENT NOTE DUE _____] LIMITED RECOURSE EQUIPMENT NOTE DUE [__ __, 20__] _ ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 [MODEL] (GENERIC MODEL [GENERIC MODEL]) AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645[REG. NO.] No. .____ Date: [__________, __,__] $________________ DEBT RATE MATURITY DATE Indenture and Security Agreement (American Airlines 2011-1 Aircraft EETC) [Reg. No.] 6 [________ INTEREST RATE MATURITY DATE []% ___________] [_ ___, 20_________] FIRST SECURITY BANK_ AMERICAN AIRLINES, NATIONAL ASSOCIATIONINC. (together with its successors and permitted assigns, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “Owner TrusteeCompany”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust Agreement”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum amount of $________________ Dollars (the “Original Amount”), together with interest $_________) [on __________]3 [in installments on the Payment Dates set forth in Schedule I hereto, each such installment to be in an amount computed by multiplying the original principal amount of this Equipment Note by the Original Amount percentage set forth in Schedule I hereto opposite the Payment Date on which such installment is due,]4 and to pay, on each Payment Date, interest in arrears on the principal amount remaining unpaid from time to time from the date hereof, or from the most recent date to which interest hereon has been paid or duly provided for, until paid in full at a rate per annum (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt RateRate shown above. The Original Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1, 1997, and thereafter on April 1 and October 1 of each year, to and including _______________. [Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount principal amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Note.]5 Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day with the same force and effect as if made on such scheduled date, and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during from and after such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *scheduled date.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “"ACT”"), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANK, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 ___ DATED AS OF SEPTEMBER 30_______________, 1997199_. SERIES [_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 _______ AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645N_____. No. ____ Date: [[ __________, 199_____ ] $_______________________ ----------------------- INTEREST RATE MATURITY DATE ------------- ------------- [___________-----------] [____________------------] FIRST SECURITY BANK, NATIONAL ASSOCIATION, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “"Owner Trustee”") under that certain Trust Agreement 645___, dated as of September 30____________, 1997199_, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “"Trust Agreement”"), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “"Original Amount”"), together with interest on the amount of the Original Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Rate. The Original Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1_____________, 1997199_, and thereafter on April 1 January 2 and October 1 July 2 of each year, to and including _______________. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANKUNITED AIR LINES, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES [_____[ ] LIMITED RECOURSE EQUIPMENT NOTE DUE [____[ ] ISSUED IN CONNECTION WITH THE BOEING [BOEING] [AIRBUS] MODEL 737-524 [MODEL#] AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645NXXXUA. No. ____ Date: [__________, ____] $_______________________ MATURITY DATE INTEREST RATE MATURITY DATE [___________[ ]% [ ] [____________] FIRST SECURITY BANKUNITED AIR LINES, NATIONAL ASSOCIATIONINC., not in its individual capacity but solely as Owner Trustee a Delaware corporation (herein in such capacity called the “Owner Trustee”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust AgreementOwner”), hereby promises to pay to __________________WILMINGTON TRUST COMPANY, as Subordination Agent under the Intercreditor Agreement, or the registered assignee thereof, the principal sum of $____________ $ (the “Original Amount”), together with interest on the amount of the Original Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve (12) 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Rate. The Original Amount of this Equipment Note shall be due and payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual arrears in semi-annual installments on and of each year commencing on October 1, 1997, and thereafter on April 1 and October 1 of each year, to and including _______________2010. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made due on such scheduled date but shall be made due on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATESTATE OR OTHER JURISDICTION. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE OFFERED FOR SALE OR SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE OR OTHER LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS REGISTRATION REQUIREMENTS IS AVAILABLE. FIRST SECURITY BANKIN ADDITION, NATIONAL ASSOCIATIONTHIS EQUIPMENT NOTE IS SUBJECT TO RESTRICTIONS ON TRANSFER PURSUANT TO THE PARTICIPATION AGREEMENT REFERRED TO HEREIN. AMERICAN AIRLINES, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES 2021-1 [___][XXX.XX.] EQUIPMENT NOTE DUE _____] LIMITED RECOURSE EQUIPMENT NOTE DUE [__ __, 20__] _ ISSUED IN CONNECTION WITH THE BOEING [AIRBUS] [YABORA] MODEL 737-524 [MODEL] (GENERIC MODEL [GENERIC MODEL]) AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645[REG. NO.] No. .____ Date: [__________, __,__] $________________ DEBT RATE MATURITY DATE [________ INTEREST RATE MATURITY DATE []% ___________] [_ ___, 20_________] FIRST SECURITY BANK_ AMERICAN AIRLINES, NATIONAL ASSOCIATIONINC. (together with its successors and permitted assigns, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “Owner TrusteeCompany”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust Agreement”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of amount of________________Dollars ($_________)[on ___ (the “Original Amount”), together with interest ________]8 [in installments on the Payment Dates set forth in Schedule I hereto, each such installment to be in an amount computed by multiplying the original principal amount of this Equipment Note by the Original Amount percentage set forth in Schedule I hereto opposite the 8 To be inserted in non-installment Equipment Notes. 7 Indenture and Security Agreement (American Airlines 2021-1 EETC) [Reg. No.] Payment Date on which such installment is due,]9 and to pay, on each Payment Date, interest in arrears on the principal amount remaining unpaid from time to time from the date hereof, or from the most recent date to which interest hereon has been paid or duly provided for, until paid in full at a rate per annum (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Rate. The Original Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1, 1997, and thereafter on April 1 and October 1 of each year, to and including _______________Rate shown above. Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount principal amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day with the same force and effect as if made on such scheduled date, and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during from and after such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *scheduled date.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “"ACT”"), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANK, NATIONAL ASSOCIATIONWILMINGTON TRUST COMPANY, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 [GPA 1991 AWA-E2] DATED AS OF SEPTEMBER 30MARCH 15, 19971991, AS AMENDED. SERIES [A/B/C/D/E] NON-RECOURSE EQUIPMENT NOTE DUE [ ] ISSUED IN CONNECTION WITH ONE IAE INTERNATIONAL AERO ENGINES AG V2500-A1 ENGINE WITH MANUFACTURER'S SERIAL NUMBER V0049 No._____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645. No. ____ Date: [__________, ____,1996] $_______________________ INTEREST DEBT RATE MATURITY DATE [___________] [_________,___] FIRST SECURITY BANK, NATIONAL ASSOCIATIONWILMINGTON TRUST COMPANY, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “"Owner Trustee”") under that certain Trust Agreement 645[GPA 1991 AWA-E2], dated as of September 30March 15, 19971991, as amended, between the Owner Participant named therein and First Security Bank, National Association Wilmington Trust Company (herein as such Trust Agreement may be supplemented or amended from time to time called the “"Trust Agreement”"), hereby promises to pay to __________________Fleet National Bank, as Subordination Agent under the Intercreditor Agreement, or the registered assignee thereof, the principal sum of $____________ (the “Original "Principal Amount”"), together with interest on the amount of the Original Principal Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt RateRate indicated above. The Original Principal Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Principal Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual semi-annual installments commencing on October 1January 2, 1997, and thereafter Trust Indenture 27 - 22 - on April 1 July 2 and October 1 January 2 of each year, to and including ___________,_____. Notwithstanding the foregoingforegoing or anything to the contrary contained herein, (i) the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Principal Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, ; and (ii) if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATESTATE OR OTHER JURISDICTION. ACCORDINGLY, THIS EQUIPMENT NOTE Indenture and Security Agreement (2012-1 EETC) MAY NOT BE OFFERED FOR SALE OR SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE OR OTHER LAWS OR AN EXEMPTION EXEMPTIONS FROM SUCH REGISTRATIONS IS REGISTRATION REQUIREMENTS ARE AVAILABLE. FIRST SECURITY BANKIN ADDITION, NATIONAL ASSOCIATIONTHIS EQUIPMENT NOTE IS SUBJECT TO RESTRICTIONS ON TRANSFER PURSUANT TO THE PARTICIPATION AGREEMENT REFERRED TO HEREIN. DELTA AIR LINES, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES [_____2012-1[__]-[ ] LIMITED RECOURSE EQUIPMENT NOTE DUE [____MATURITY DATE] ISSUED IN CONNECTION WITH THE BOEING [BOEING][AIRBUS] MODEL 737-524 [MODEL] (GENERIC MODEL [GENERIC MODEL]) AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645[REG. NO.] No. ____ Date: [__________, ____] $_______________________ INTEREST DEBT RATE MATURITY DATE [___________] [____________] FIRST SECURITY BANKDELTA AIR LINES, NATIONAL ASSOCIATIONINC. (together with its successors and permitted assigns, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “Owner TrusteeCompany”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust Agreement”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum amount of $____________ Dollars (the “Original Amount”), together with interest $ ) [on ]7 [in installments on the Payment Dates set forth in Schedule I hereto, each such installment to be in an amount computed by multiplying the original principal amount of this Equipment Note by the Original Amount percentage set forth in Schedule I hereto opposite the Payment Date on which such installment is due,]8 and to pay interest in arrears on each Payment Date at the Debt Rate shown above on the principal amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof hereof, or from the most recent date to which interest hereon has been paid or duly provided for, until paid in full at a rate per annum equal to the Debt Ratefull. The Original Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1, 1997, and thereafter on April 1 and October 1 of each year, to and including _______________. [Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount principal amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *unpaid

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATESTATE OR OTHER JURISDICTION. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE OFFERED FOR SALE OR SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE OR OTHER LAWS OR AN EXEMPTION EXEMPTIONS FROM SUCH REGISTRATIONS IS REGISTRATION REQUIREMENTS ARE AVAILABLE. FIRST SECURITY BANKIN ADDITION, NATIONAL ASSOCIATIONTHIS EQUIPMENT NOTE IS SUBJECT TO RESTRICTIONS ON TRANSFER PURSUANT Indenture and Security Agreement (2011-1 EETC) [Reg. No.] TO THE PARTICIPATION AGREEMENT REFERRED TO HEREIN. DELTA AIR LINES, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES 2011-1[__]-[_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____MATURITY DATE] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 [MODEL] (GENERIC MODEL [GENERIC MODEL]) AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645[REG. NO.] No. __________ Date: [________ DEBT RATE MATURITY DATE __________ __________, ____] $_ DELTA AIR LINES, INC. (together with its successors and permitted assigns, “Company”) hereby promises to pay to , or the registered assignee thereof, the principal amount of __________________________ INTEREST RATE MATURITY DATE [___________] [____________] FIRST SECURITY BANK, NATIONAL ASSOCIATION, not in its individual capacity but solely as Owner Trustee Dollars (herein in such capacity called the “Owner Trustee”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust Agreement”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “Original Amount”), together with interest ) [on _______] 3 [in installments on the Payment Dates set forth in Schedule I hereto, each such installment to be in an amount computed by multiplying the original principal amount of this Equipment Note by the Original Amount percentage set forth in Schedule I hereto opposite the Payment Date on which such installment is due,] 4 and to pay interest in arrears on each Payment Date at the Debt Rate shown above on the principal amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof hereof, or from the most recent date to which interest hereon has been paid or duly provided for, until paid in full at a rate per annum equal to the Debt Ratefull. The Original Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1, 1997, and thereafter on April 1 and October 1 of each year, to and including _______________. [Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount principal amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. .] 5 Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day with the same force and effect as if made on such scheduled date, and if such 3 To be inserted in non-installment Equipment Notes. 4 To be inserted in installment Equipment Notes. 5 To be inserted in installment Equipment Notes. Indenture and Security Agreement (2011-1 EETC) [Reg. No.] payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during from and after such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *scheduled date.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATESTATE OR OTHER JURISDICTION. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE OFFERED FOR SALE OR SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE OR OTHER LAWS OR AN EXEMPTION EXEMPTIONS FROM SUCH REGISTRATIONS IS REGISTRATION REQUIREMENTS ARE AVAILABLE. FIRST SECURITY BANKIN ADDITION, NATIONAL ASSOCIATIONTHIS EQUIPMENT NOTE IS SUBJECT TO RESTRICTIONS ON TRANSFER PURSUANT TO THE PARTICIPATION AGREEMENT REFERRED TO HEREIN. AMERICAN AIRLINES, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES 2013-1[ ][_____XXX.XX.] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] , 20 ISSUED IN CONNECTION WITH THE BOEING MODEL 737[MODEL] Indenture and Security Agreement (American Airlines 2013-524 1 Aircraft EETC) [Reg. No.] (GENERIC MODEL [GENERIC MODEL]) AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645[REG. NO.] No. ____ DEBT RATE [ ]% Date: [__________[ , ____] $_______________________ INTEREST RATE $ MATURITY DATE [___________] [____________] FIRST SECURITY BANK, NATIONAL ASSOCIATION20 AMERICAN AIRLINES, not in INC. (together with its individual capacity but solely as Owner Trustee (herein in such capacity called successors and permitted assigns, the “Owner TrusteeCompany”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust Agreement”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum amount of $____________ Dollars (the “Original Amount”), together with interest $ ) [on ]3 [in installments on the Payment Dates set forth in Schedule I hereto, each such installment to be in an amount computed by multiplying the original principal amount of this Equipment Note by the Original Amount percentage set forth in Schedule I hereto opposite the Payment Date on which such installment is due,]4 and to pay, on each Payment Date, interest in arrears on the principal amount remaining unpaid from time to time from the date hereof, or from the most recent date to which interest hereon has been paid or duly provided for, until paid in full at a rate per annum (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Rate shown above[, as such Debt Rate may be changed from time to time as described in the definition of “Debt Rate. The Original Amount of this Equipment Note shall be payable ” in installments on the dates set forth in Schedule I hereto equal Annex A to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I heretoIndenture]5. Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1, 1997, and thereafter on April 1 and October 1 of each year, to and including _______________. [Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount principal amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Note.]6 Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day with the same force and effect as if made on such scheduled date, and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during from and after such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *scheduled date.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “"ACT”"), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATESTATE OR OTHER JURISDICTION. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE OFFERED FOR SALE OR SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE OR OTHER LAWS OR AN EXEMPTION EXEMPTIONS FROM SUCH REGISTRATIONS IS REGISTRATION REQUIREMENTS ARE AVAILABLE. FIRST SECURITY BANKDELTA AIR LINES, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES 2002-1 [_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING MODEL 737767-524 432ER AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645. N833MH No. .____ Date: [__________, __,__] $_______________________ INTEREST RATE MATURITY DATE [___________] [___________,_____] FIRST SECURITY BANKDELTA AIR LINES, NATIONAL ASSOCIATIONINC. (together with its successors and permitted assigns, not in its individual capacity but solely as Owner Trustee (herein in such capacity called the “Owner Trustee”"Company") under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust Agreement”), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum amount of $________________ Dollars (the “Original Amount”), together with interest $_________) [on __________]1 [in installments on the Payment Dates set forth in Schedule I hereto, each such installment to be in an amount computed by multiplying the original principal amount of this Equipment Note by the Original Amount percentage set forth in Schedule I hereto opposite the Payment Date on which such installment is due,]2 and to pay interest in arrears on each Payment Date at the Debt Rate on the principal amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Ratefull. The Original Amount of this Equipment Note shall be payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1, 1997, and thereafter on April 1 and October 1 of each year, to and including _______________. [Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount principal amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Note.]2 Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day with the same force and effect as if made on such scheduled date, and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during from and after such extensionscheduled date. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may ----------------- 1 To be amended or supplemented from time to time. All other capitalized terms used inserted in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30non-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the installment Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.

Form of Equipment Notes. The Equipment Notes shall be substantially in the form set forth below: THIS EQUIPMENT NOTE HAS NOT BEEN REGISTERED PURSUANT TO THE SECURITIES ACT OF 1933, AS AMENDED (THE “"ACT”"), OR PURSUANT TO THE SECURITIES LAWS OF ANY STATE. ACCORDINGLY, THIS EQUIPMENT NOTE MAY NOT BE SOLD UNLESS EITHER REGISTERED UNDER THE ACT AND SUCH APPLICABLE STATE LAWS OR AN EXEMPTION FROM SUCH REGISTRATIONS IS AVAILABLE. FIRST SECURITY BANKCONTINENTAL AIRLINES, NATIONAL ASSOCIATION, AS OWNER TRUSTEE UNDER TRUST AGREEMENT 645 DATED AS OF SEPTEMBER 30, 1997INC. SERIES [_____] LIMITED RECOURSE EQUIPMENT NOTE DUE [____] ISSUED IN CONNECTION WITH THE BOEING MODEL 737-524 [_______] AIRCRAFT BEARING UNITED STATES REGISTRATION NUMBER N14645N[_____]. No. ____ Date: [__________, ____] $___________________________ INTEREST RATE MATURITY DATE [___________] [____________] FIRST SECURITY BANKCONTINENTAL AIRLINES, NATIONAL ASSOCIATIONINC., not in its individual capacity but solely as Owner Trustee a Delaware corporation (herein in such capacity called the “Owner Trustee”) under that certain Trust Agreement 645, dated as of September 30, 1997, between the Owner Participant named therein and First Security Bank, National Association (herein as such Trust Agreement may be supplemented or amended from time to time called the “Trust Agreement”"Owner"), hereby promises to pay to __________________, or the registered assignee thereof, the principal sum of $____________ (the “"Original Amount”"), together with interest on the amount of the Original Amount remaining unpaid from time to time (calculated on the basis of a year of 360 days comprised of twelve 30-day months) from the date hereof until paid in full at a rate per annum equal to the Debt Rate. The Original Amount of this Equipment Note shall be [payable in installments on the dates set forth in Schedule I hereto equal to the corresponding percentage of the Original Amount of this Equipment Note set forth in Schedule I hereto. .] [paid in full on ____] Accrued but unpaid interest shall be due and payable in semiannual installments commencing on October 1[______, 1997, __ 199_,] and thereafter on April 1 [______] and October 1 [______] of each year, to and including [_______________. .] Notwithstanding the foregoing, the final payment made on this Equipment Note shall be in an amount sufficient to discharge in full the unpaid Original Amount and all accrued and unpaid interest on, and any other amounts due under, this Equipment Note. Notwithstanding anything to the contrary contained herein, if any date on which a payment under this Equipment Note becomes due and payable is not a Business Day, then such payment shall not be made on such scheduled date but shall be made on the next succeeding Business Day and if such payment is made on such next succeeding Business Day, no interest shall accrue on the amount of such payment during such extension. For purposes hereof, the term “Trust Indenture” means the Trust Indenture and Mortgage 645, dated as of September 30, 1997, between the Owner Trustee and Wilmington Trust Company (the “Mortgagee”), as the same may be amended or supplemented from time to time. All other capitalized terms used in this Equipment Note and not defined herein shall have the respective meanings assigned in the Trust Indenture. This Equipment Note shall bear interest, payable on demand, at the Payment Due Rate (calculated on the basis of a year of 360 days comprised of twelve 30-day months) on any overdue Original Amount, any overdue Make-Whole Amount, if any, and (to the extent permitted by applicable Law) any overdue interest and any other amounts payable hereunder which are overdue, in each case for the period the same is overdue. Amounts shall be overdue if not paid when due (whether at stated maturity, by acceleration or otherwise). The interest rate borne by this Equipment Note shall be subject to adjustments to the extent, and under the circumstances, specified by the Registration Rights Agreement. All payments of Original Amount, interest, Make-Whole Amount, if any, and other amounts, if any, to be made by the Owner Trustee hereunder and under the Trust Indenture or the Participation Agreement shall be payable only from the income and proceeds from the Trust Estate to the extent included in the Trust Indenture Estate and only to the extent that the Owner Trustee shall have sufficient income or proceeds from the Trust Estate to the extent included in the Trust Indenture Estate to enable the Mortgagee to make such payments in accordance with the terms of Section 2.03 and Article III of the Trust Indenture, and each holder hereof, by its acceptance of this Equipment Note, agrees that it will look solely to the income and proceeds from the Trust Indenture Estate to the extent available for distribution to the holder hereof as above provided and that none of the Owner Participant, the Owner Trustee and the Mortgagee is personally liable or liable in any manner extending to any assets other than the Trust Indenture Estate to the holder hereof for any amounts payable or any liability under this Equipment Note or, except as provided in the Trust Indenture or in the Participation Agreement, for any liability under the Trust Indenture or the Participation Agreement; provided, however, that nothing herein contained shall limit, restrict or impair the right of the Mortgagee, subject always to the terms and provisions of the Trust Indenture, to accelerate the maturity of this Equipment Note upon occurrence of an Event of Default under the Trust Indenture in accordance with Section 4.04(b) of the Trust Indenture, to bring suit and obtain a judgment against the Owner Trustee on this Equipment Note for purposes of realizing upon the Trust Indenture Estate and to exercise all rights and remedies provided under the Trust Indenture or otherwise realize upon the Trust Indenture Estate as provided under the Trust Indenture. There shall be maintained an Equipment Note Register for the purpose of registering transfers and exchanges of Equipment Notes at the Corporate Trust Office of the Mortgagee or at the office of any successor in the manner provided in Section 2.07 of the Trust Indenture. The Original Amount and interest and other amounts due hereunder shall be payable in Dollars in immediately available funds at the Corporate Trust Office of the Mortgagee, or as otherwise provided in the Trust Indenture. Each such payment shall be made on the date such payment is due and without any presentment or surrender of this Equipment Note, except that in the case of any final payment with respect to this Equipment Note, the Equipment Note shall be surrendered promptly thereafter to the Mortgagee for cancellation. The holder hereof, by its acceptance of this Equipment Note, agrees that, except as provided in the Trust Indenture, each payment of the Original Amount, Make-Whole Amount, if any, and interest received by it hereunder shall be applied, first, to the payment of accrued interest on this Equipment Note (as well as any interest on any overdue Original Amount, any overdue Make-Whole Amount, if any, or, to the extent permitted by Law, any overdue interest and other amounts hereunder) to the date of such payment, second, to the payment of the Original Amount of this Equipment Note then due, third, to the payment of Make-Whole Amount, if any, and any other amount due hereunder or under the Trust Indenture, and fourth, the balance, if any, remaining thereafter, to the payment of installments of the Original Amount of this Equipment Note remaining unpaid in the inverse order of their maturity. This Equipment Note is one of the Equipment Notes referred to in the Trust Indenture which have been or are to be issued by the Owner Trustee pursuant to the terms of the Trust Indenture. The Trust Indenture Estate is held by the Mortgagee as security, in part, for the Equipment Notes. The provisions of this Equipment Note are subject to the Trust Indenture. Reference is hereby made to the Trust Indenture for a complete statement of the rights and obligations of the holder of, and the nature and extent of the security for, this Equipment Note and the rights and obligations of the holders of, and the nature and extent of the security for, any other Equipment Notes executed and delivered under the Trust Indenture, as well as for a statement of the terms and conditions of the Trust created by the Trust Indenture, to all of which terms and conditions in the Trust Indenture each holder hereof agrees by its acceptance of this Equipment Note. As provided in the Trust Indenture and subject to certain limitations therein set forth, this Equipment Note is exchangeable for a like aggregate Original Amount of Equipment Notes of different authorized denominations, as requested by the holder surrendering the same. Prior to due presentment for registration of transfer of this Equipment Note, the Owner Trustee and the Mortgagee shall treat the person in whose name this Equipment Note is registered as the owner hereof for all purposes, whether or not this Equipment Note be overdue, and neither the Owner Trustee nor the Mortgagee shall be affected by notice to the contrary. This Equipment Note is subject to redemption as provided in Sections 2.10, 2.11 and 2.12 of the Trust Indenture but not otherwise. This Equipment Note is also subject to exchange and to purchase by the Owner Participant or the Owner Trustee as provided in Section 2.13 of the Trust Indenture but not otherwise. In addition, this Equipment Note may be accelerated as provided in Section 4.04 of the Trust Indenture. [The indebtedness evidenced by this Equipment Note is, to the extent and in the manner provided in the Trust Indenture, subordinate and subject in right of payment to the prior payment in full of the Secured Obligations (as defined in the Trust Indenture) in respect of [Series A Equipment Notes]1 [Series A and Series B Equipment Notes],2 and this Equipment Note is issued subject to such provisions. The Note Holder of this Equipment Note, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Mortgagee on his behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in the Trust Indenture and (c) appoints the Mortgagee his attorney-in-fact for such purpose.]3 Unless the certificate of authentication hereon has been executed by or on behalf of the Mortgagee by manual signature, this Equipment Note shall not be entitled to any benefit under the Trust Indenture or be valid or obligatory for any purpose. THIS EQUIPMENT NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. * * *.