Common use of Protection of Title and Further Assurances Clause in Contracts

Protection of Title and Further Assurances. Forthwith upon the execution and delivery of this Lease, the Indenture, the Trust Agreement, Lease Supplement, Indenture Supplement and Trust Supplement, and any other supplement from time to time required by the terms hereof, Lessee will cause this Lease, the Indenture, the Trust Agreement, Lease Supplement, Indenture Supplement, Trust Supplement and such other supplements to be duly filed and recorded, and maintained of record, in accordance with the applicable laws of the government of registry of the Aircraft and the Engine. If any filing or recording is reasonably necessary to protect the interests of Lessor or Indenture Trustee, Lessee shall, at its own cost and expense (except it shall be at Lessor's expense if in connection with a change in ownership of the Engine or any other transfer or assignment by Lessor other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default) and upon request by Lessor cause Without limiting the foregoing, Lessee shall do or cause to be done, at Lessee's cost and expense (except it shall be at Lessor's expense if in connection with a change in ownership of the Engine or any other transfer or assignment by Lessor other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default), any and all acts and things within its control which may be required under the terms of the Mortgage Convention to protect and preserve the title of Lessor, the Lien of the Indenture, this Lease and the interests of Lessor and Indenture Trustee within the jurisdiction of any signatory which has ratified the Mortgage Convention in such jurisdiction and in the territories thereof in which Lessee, any Permitted Sublessee or any wet sublessee may operate the Engine, as Lessor may reasonably request. Lessee shall also do or cause to be done, at its own expense (except it shall be at Lessor's expense if in connection with a change in the ownership of the Engine or any other transfer or assignment by Lessor other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default), any and all acts and things which may be required under the terms of any other Law involving any jurisdiction in which Lessee, any Permitted Sublessee or any wet lessee may operate the Engine, which Lessor may reasonably request, to protect and preserve the title of the Lessor, this Lease, the Indenture and Lessor's and Indenture Trustee's interest in the Engine and under any of the Operative Documents or Financing Documents within any such jurisdiction. In addition, at Lessee's expense, Lessee will promptly and duly execute and deliver to Lessor or Indenture Trustee, as applicable, such further documents and assurances and take such further actions as Owner Participant or Indenture Trustee may from time to time reasonably request in order to more effectively carry out the intent and purpose of this Lease and the other Operative Documents and the Financing Documents and to protect the rights and remedies created or intended to be created in -81- 82 favor of Lessor or Indenture Trustee hereunder and the other Operative Documents and the Financing Documents including, without limitation, if reasonably requested by Owner Participant or Indenture Trustee, at the expense of Lessee (except it shall be at Lessor's expense if in connection with a change in the ownership of the Engine or any other transfer or assignment by Lessor or Indenture Trustee other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default), the execution and delivery of supplements or amendments hereto in recordable form, subjecting to this Lease, the Indenture and the other Financing Documents, any replacement Engine and the recording or filing of counterparts thereof in accordance with the laws of any appropriate jurisdiction.

Protection of Title and Further Assurances. Forthwith upon the execution and delivery of this Lease, the Indenture, the Trust Agreement, Lease Supplement, Indenture Supplement and Trust Supplement, and any other supplement from time to time required by the terms hereof, Lessee will cause this Lease, the Indenture, the Trust Agreement, Lease Supplement, Indenture Supplement, Trust Supplement and such other supplements to be duly filed and recorded, and maintained of record, in accordance with the applicable laws of the government of registry of the Aircraft and the EngineAircraft. If any filing or recording is reasonably necessary to protect the interests of Lessor or Indenture Trustee, Lessee shall, at its own cost and expense (except it shall be at Lessor's expense if in connection with a change in ownership of the Engine or any other transfer or assignment by Lessor other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default) and upon request by Lessor cause Without limiting the foregoing, Lessee shall do or cause to be done, at Lessee's cost and expense (except it shall be at Lessor's expense if in connection with a change in ownership of the Engine Aircraft or any other transfer or assignment by Lessor other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default), any and all acts and things within its control which may be required under the terms of the Mortgage Convention to protect and preserve the title of Lessor, the Lien of the Indenture, this Lease Lease, and the interests of Lessor and Indenture Trustee within the jurisdiction of any signatory which has ratified the Mortgage Convention in such jurisdiction and in the territories thereof in which Lessee, any Permitted Sublessee or any wet sublessee may operate the EngineAircraft, as Lessor may reasonably request. Lessee shall also do or cause to be done, at its own expense (except it shall be at Lessor's expense if in connection with a change in the ownership of the Engine Aircraft or any other transfer or assignment by Lessor other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default), any and all acts and things which may be required under the terms of any other Law involving any jurisdiction in which Lessee, any Permitted Sublessee or any wet lessee may operate the EngineAircraft, which Lessor may reasonably request, to protect and preserve the title of the Lessor, this Lease, the Indenture and Lessor's and Indenture Trustee's interest in the Engine Aircraft and under any of the Operative Documents or Financing Documents within any such jurisdiction. In addition, at Lessee's expense, Lessee will promptly and duly execute and deliver to Lessor or Indenture Trustee, as applicable, such further documents and assurances and take such further actions as Owner Participant or Indenture Trustee may from time to time reasonably request in order to more effectively carry out the intent and purpose of this Lease and the other Operative Documents and the Financing Documents and to protect the rights and remedies created or intended to be created in -81- 82 favor of Lessor or Indenture Trustee hereunder and the other Operative Documents and the Financing Documents including, without limitation, if reasonably requested by Owner Participant or Indenture Trustee, at the expense of Lessee (except it shall be at Lessor's expense if in connection with a change in the ownership of the Engine or any other transfer or assignment by Lessor or Indenture Trustee other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default), the execution and delivery of supplements or amendments hereto in recordable form, subjecting to this Lease, the Indenture and the other Financing Documents, any replacement Engine and the recording or filing of counterparts thereof in accordance with the laws of any appropriate jurisdiction.Indenture

Protection of Title and Further Assurances. Forthwith upon the execution and delivery of this Lease, the Indenture, the Trust Agreement, the Lease Supplement, Indenture Supplement and Trust Supplement, and any other supplement from time to time required by the terms hereof, Lessee will cause this Lease, the Indenture, the Trust Agreement, the Lease Supplement, Indenture Supplement, the Trust Supplement and such other supplements to be duly filed and recorded, and maintained of record, in accordance with the applicable laws of the government of registry of the Aircraft and the EngineAircraft. If any filing or recording is reasonably necessary to protect the interests of Lessor, Foreign Lessor or Indenture Trustee, Lessee shall, at its own cost and expense (except it shall be at Lessor's expense if in connection with a change in ownership of the Engine Aircraft or any other transfer or assignment by Lessor other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default) and upon request by Lessor or Foreign Lessor, cause any financing statements and any and all additional instruments and other documents, so far as permitted by applicable Law, to be kept, filed, and recorded and to be re-executed, refiled and re-recorded at all times in the appropriate office pursuant or in relation to any applicable Laws of any Governmental Entity, to protect and preserve the rights and interests of Lessor, Foreign Lessor or Indenture Trustee hereunder, under the Indenture and in the Aircraft, and Lessee shall furnish to Lessor, Foreign Lessor and Indenture Trustee, evidence, reasonably satisfactory to Lessor and Indenture Trustee, of each such filing or refiling and recordation and re-recordation. Without limiting the foregoing, Lessee shall do or cause to be done, at Lessee's cost and expense (except it shall be at Lessor's expense if in connection with a change in ownership of the Engine Aircraft or any other transfer or assignment by Lessor other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default), any and all acts and things within its control which may be required under the terms of the Mortgage Convention to protect and preserve the title of Lessor, the Lien of the Indenture, this Lease and the interests of Lessor and Indenture Trustee within the jurisdiction of any signatory which has ratified the Mortgage Convention in such jurisdiction and in the territories thereof in which Lessee, any Permitted Sublessee or any wet sublessee may operate the Engine, as Lessor may reasonably request. Lessee shall also do or cause to be done, at its own expense (except it shall be at Lessor's expense if in connection with a change in the ownership of the Engine or any other transfer or assignment by Lessor other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default), any and all acts and things which may be required under the terms of any other Law involving any jurisdiction in which Lessee, any Permitted Sublessee or any wet lessee may operate the Engine, which Lessor may reasonably request, to protect and preserve the title of the Lessor, this Lease, the Indenture and Lessor's and Indenture Trustee's interest in the Engine and under any of the Operative Documents or Financing Documents within any such jurisdiction. In addition, at Lessee's expense, Lessee will promptly and duly execute and deliver to Lessor or Indenture Trustee, as applicable, such further documents and assurances and take such further actions as Owner Participant or Indenture Trustee may from time to time reasonably request in order to more effectively carry out the intent and purpose of this Lease and the other Operative Documents and the Financing Documents and to protect the rights and remedies created or intended to be created in -81- 82 favor of Lessor, Foreign Lessor or Indenture Trustee hereunder and the other Operative Documents and the Financing Documents including, without limitation, if reasonably requested by Owner Participant or Indenture Trustee, at the expense of Lessee (except it shall be at Lessor's expense if in connection with a change in the ownership of the Engine Aircraft or any other transfer or assignment by Lessor, Foreign Lessor or Indenture Trustee other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default), the execution and delivery of supplements or amendments hereto in recordable form, subjecting to this Lease, the Indenture Indenture, the Foreign Lease Documents and the other Financing Documents, any replacement Aircraft or Engine and the recording or filing of counterparts thereof in accordance with the laws of any appropriate jurisdiction.

Protection of Title and Further Assurances. Forthwith upon the execution and delivery of this Lease, the Indenture, the Trust Agreement, the Lease Supplement, Indenture Supplement and Trust Supplement, and any other supplement from time to time required by the terms hereof, Lessee will cause this Lease, the Indenture, the Trust Agreement, the Lease Supplement, Indenture Supplement, the Trust Supplement and such other supplements to be duly filed and recorded, and maintained of record, in accordance with the applicable laws of the government of registry of the Aircraft and the EngineAircraft. If any filing or recording is reasonably necessary to protect the interests of Lessor or Indenture Trustee, Lessee shall, at its own cost and expense (except it shall be at Lessor's expense if in connection with a change in ownership of the Engine Aircraft or any other transfer or assignment by Lessor other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default) and upon request by Lessor, cause any financing statements and any and all additional instruments and other documents, so far as permitted by applicable Law, to be kept, filed, and recorded and to be re-executed, refiled and re-recorded at all times in the appropriate office pursuant or in relation to any applicable Laws of any Governmental Entity, to protect and preserve the rights and interests of Lessor cause or Indenture Trustee hereunder, under the Indenture and in the Aircraft, and Lessee shall furnish to Lessor and Indenture Trustee, evidence, reasonably satisfactory to Lessor and Indenture Trustee, of each such filing or refiling and recordation and re-recordation. Without limiting the foregoing, Lessee shall do or cause to be done, at Lessee's cost and expense (except it shall be at Lessor's expense if in connection with a change in ownership of the Engine Aircraft or any other transfer or assignment by Lessor other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default), any and all acts and things within its control which may be required under the terms of the Mortgage Convention to protect and preserve the title of Lessor, the Lien of the Indenture, this Lease Lease, and the interests of Lessor and Indenture Trustee within the jurisdiction of any signatory which has ratified the Mortgage Convention in such jurisdiction and in the territories thereof in which Lessee, any Permitted Sublessee or any wet sublessee may operate the EngineAircraft, as Lessor may reasonably request. Lessee shall also do or cause to be done, at its own expense (except it shall be at Lessor's expense if in connection with a change -87- 89 in the ownership of the Engine Aircraft or any other transfer or assignment by Lessor other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default), any and all acts and things which may be required under the terms of any other Law involving any jurisdiction in which Lessee, any Permitted Sublessee or any wet lessee may operate the EngineAircraft, which Lessor may reasonably request, to protect and preserve the title of the Lessor, this Lease, the Indenture and Lessor's and Indenture Trustee's interest in the Engine Aircraft and under any of the Operative Documents or Financing Documents within any such jurisdiction. In addition, at Lessee's expense, Lessee will promptly and duly execute and deliver to Lessor or Indenture Trustee, as applicable, such further documents and assurances and take such further actions as Owner Participant or Indenture Trustee may from time to time reasonably request in order to more effectively carry out the intent and purpose of this Lease and the other Operative Documents and the Financing Documents and to protect the rights and remedies created or intended to be created in -81- 82 favor of Lessor or Indenture Trustee hereunder and the other Operative Documents and the Financing Documents including, without limitation, if reasonably requested by Owner Participant or Indenture Trustee, at the expense of Lessee (except it shall be at Lessor's expense if in connection with a change in the ownership of the Engine Aircraft or any other transfer or assignment by Lessor or Indenture Trustee other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default), the execution and delivery of supplements or amendments hereto in recordable form, subjecting to this Lease, the Indenture and the other Financing Documents, any replacement Aircraft or Engine and the recording or filing of counterparts thereof in accordance with the laws of any appropriate jurisdiction. Lessee's obligations under this Section 15 are subject to the reasonable cooperation of the applicable parties.

Protection of Title and Further Assurances. Forthwith upon the execution and delivery of this Lease, the Indenture, the Trust Agreement, Lease Supplement, Indenture Supplement and Trust Supplement, and any other supplement from time to time required by the terms hereof, Lessee will cause this Lease, the Indenture, the Trust Agreement, Lease Supplement, Indenture Supplement, Trust Supplement and such other supplements to be duly filed and recorded, and maintained of record, in accordance with the applicable laws of the government of registry of the Aircraft and the EngineAircraft. If any filing or recording is reasonably necessary to protect the interests of Lessor or Indenture Trustee, Lessee shall, at its own cost and expense (except 91 it shall be at Lessor's expense if in connection with a change in ownership of the Engine Aircraft or any other transfer or assignment by Lessor other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default) and upon request by Lessor, cause any financing statements and any and all additional instruments and other documents, so far as permitted by applicable Law, to be kept, filed, and recorded and to be re-executed, refiled and re-recorded at all times in the appropriate office pursuant or in relation to any applicable Laws of any Governmental Entity, to protect and preserve the rights and interests of Lessor cause or Indenture Trustee hereunder, under the Indenture and in the Aircraft, and Lessee shall furnish to Lessor and Indenture Trustee, evidence, reasonably satisfactory to Lessor and Indenture Trustee, of each such filing or refiling and recordation and re-recordation. Without limiting the foregoing, Lessee shall do or cause to be done, at Lessee's cost and expense (except it shall be at Lessor's expense if in connection with a change in ownership of the Engine Aircraft or any other transfer or assignment by Lessor other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default), any and all acts and things within its control which may be required under the terms of the Mortgage Convention to protect and preserve the title of Lessor, the Lien of the Indenture, this Lease Lease, and the interests of Lessor and Indenture Trustee within the jurisdiction of any signatory which has ratified the Mortgage Convention in such jurisdiction and in the territories thereof in which Lessee, any Permitted Sublessee or any wet sublessee may operate the EngineAircraft, as Lessor may reasonably request. Lessee shall also do or cause to be done, at its own expense (except it shall be at Lessor's expense if in connection with a change in the ownership of the Engine Aircraft or any other transfer or assignment by Lessor other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default), any and all acts and things which may be required under the terms of any other Law involving any jurisdiction in which Lessee, any Permitted Sublessee or any wet lessee may operate the EngineAircraft, which Lessor may reasonably request, to protect and preserve the title of the Lessor, this Lease, the Indenture and Lessor's and Indenture Trustee's interest in the Engine Aircraft and under any of the Operative Documents or Financing Documents within any such jurisdiction. In addition, at Lessee's expense, Lessee will promptly and duly execute and deliver to Lessor or Indenture Trustee, as applicable, such further documents and assurances and take such further actions as Owner Participant or Indenture Trustee may from time to time reasonably request in order to more effectively carry out the intent and purpose of this Lease and the other Operative Documents and the Financing Documents and to protect the rights and remedies created or intended to be created in -81- 82 favor of Lessor or Indenture Trustee hereunder and the other Operative Documents and the Financing Documents including, without limitation, if reasonably requested by Owner Participant or Indenture Trustee, at the expense of Lessee (except it shall be at Lessor's expense if in connection with a change in the ownership of the Engine or any other transfer or assignment by Lessor or Indenture Trustee other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default), the execution and delivery of supplements or amendments hereto in recordable form, subjecting to this Lease, the Indenture and the other Financing Documents, any replacement Engine and the recording or filing of counterparts thereof in accordance with the laws of any appropriate jurisdiction.Indenture

Protection of Title and Further Assurances. Forthwith upon the execution and delivery of this Lease, the Indenture, the Trust Agreement, the Lease Supplement, Indenture Supplement and Trust Supplement, and any other supplement from time to time required by the terms hereof, Lessee will cause this Lease, the Indenture, the Trust Agreement, the Lease Supplement, Indenture Supplement, Trust Supplement and such other supplements to be duly filed and recorded, and maintained of record, in accordance with the applicable laws of the government of registry of the Aircraft and the Engine. If any filing or recording is reasonably necessary to protect the interests of Lessor or Indenture Trustee, Lessee shall, at its own cost and expense (except it shall be at Lessor's expense if in connection with a change in ownership of the Engine or any other transfer or assignment by Lessor other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default) and upon request by Lessor cause Without limiting the foregoing, Lessee shall do or cause to be done, at Lessee's cost and expense (except it shall be at Lessor's expense if in connection with a change in ownership of the Engine Aircraft or any other transfer or assignment by Lessor other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default), any and all acts and things within its control which may be required under the terms of the Mortgage Convention to protect and preserve the title of Lessor, the Lien of the Indenture, this Lease Lease, and the interests of Lessor and Indenture Trustee within the jurisdiction of any signatory which has ratified the Mortgage Convention in such jurisdiction and in the territories thereof in which Lessee, any Permitted Sublessee or any wet sublessee may operate the EngineAircraft, as Lessor or Indenture Trustee may reasonably request. Lessee shall also do or cause to be done, at its own expense (except it shall be at Lessor's expense if in connection with a change in the ownership of the Engine Aircraft or any other transfer or assignment by Lessor other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default), any and all acts and things which may be required under the terms of any other Law involving any jurisdiction in which Lessee, any Permitted Sublessee or any wet lessee may operate the EngineAircraft, which Lessor Owner Participant or Indenture Trustee may reasonably request, to protect and preserve the title of the Lessor, this Lease, the Indenture and Lessor's and Indenture Trustee's interest in the Engine and under any of the Operative Documents or Financing Documents within any such jurisdiction. In addition, at Lessee's expense, Lessee will promptly and duly execute and deliver to Lessor or Indenture Trustee, as applicable, such further documents and assurances and take such further actions as Owner Participant or Indenture Trustee may from time to time reasonably request in order to more effectively carry out the intent and purpose of this Lease and the other Operative Documents and the Financing Documents and to protect the rights and remedies created or intended to be created in -81- 82 favor of Lessor, Foreign Lessor or Indenture Trustee hereunder and the other Operative Documents and the Financing Documents including, without limitation, if reasonably requested by Owner Participant or Indenture Trustee, at the expense of Lessee (except it shall be at Lessor's expense if in connection with a change in the ownership of the Engine Aircraft or any other transfer or assignment by Lessor, Foreign Lessor or Indenture Trustee other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default), the execution and delivery of supplements or amendments hereto in recordable form, subjecting to this Lease, the Indenture Indenture, the Foreign Lease Documents and the other Financing Documents, any replacement Aircraft or Engine and the recording or filing of counterparts thereof in accordance with the laws of any appropriate jurisdiction. Lessee's obligations under this Section 15 are subject to the reasonable cooperation of the applicable parties.

Protection of Title and Further Assurances. Forthwith upon the execution and delivery of this Lease, the Indenture, the Trust Agreement, the Lease Supplement, Indenture Supplement and Trust Supplement, and any other supplement from time to time required by the terms hereof, Lessee will cause this Lease, the Indenture, the Trust Agreement, the Lease Supplement, Indenture Supplement, the Trust Supplement and such other supplements to be duly filed and recorded, and maintained of record, in accordance with the applicable laws of the government of registry of the Aircraft and the EngineAircraft. If any filing or recording is reasonably necessary to protect the interests of Lessor, Foreign Lessor or Indenture Trustee, Lessee shall, at its own cost and expense (except it shall be at Lessor's expense if in connection with a change in ownership of the Engine Aircraft or any other transfer or assignment by Lessor other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default) ), and upon request by Lessor or Foreign Lessor cause any financing statements and any and all additional instruments and other documents, so far as permitted by applicable Law, to be kept, filed, and recorded and to be re-executed, refiled and re-recorded at all times in the appropriate office pursuant or in relation to any applicable Laws of any Governmental Entity, to protect and preserve the rights and interests of Lessor, Foreign Lessor or Indenture Trustee hereunder, under the Indenture and in the Aircraft, and Lessee shall furnish to Lessor, Foreign Lessor and Indenture Trustee, evidence, Without limiting the foregoing, Lessee shall do or cause to be done, at Lessee's cost and expense (except it shall be at Lessor's expense if in connection with a change in ownership of the Engine Aircraft or any other transfer or assignment by Lessor other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default), any and all acts and things within its control which may be required under the terms of the Mortgage Convention to protect and preserve the title of Lessor, the Lien of the Indenture, this Lease Lease, and the interests of Lessor and Indenture Trustee within the jurisdiction of any signatory which has ratified the Mortgage Convention in such jurisdiction and in the territories thereof in which Lessee, any Permitted Sublessee or any wet sublessee may operate the EngineAircraft, as Lessor may reasonably request. Lessee shall also do or cause to be done, at its own expense (except it shall be at Lessor's expense if in connection with a change in the ownership of the Engine Aircraft or any other transfer or assignment by Lessor other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default), any and all acts and things which may be required under the terms of any other Law involving any jurisdiction in which Lessee, any Permitted Sublessee or any wet lessee may operate the Engine, Aircraft which Lessor may reasonably request, to protect and preserve the title of the Lessor, this Lease, the Indenture and Lessor's, Foreign Lessor's and Indenture Trustee's interest in the Engine Aircraft and under any of the Operative Documents or Financing Documents within any such jurisdiction. In addition, at Lessee's expense, Lessee will promptly and duly execute and deliver to Lessor or Indenture Trustee, as applicable, such further documents and assurances and take such further actions as Owner Participant or Indenture Trustee may from time to time reasonably request in order to more effectively carry out the intent and purpose of this Lease and the other Operative Documents and the Financing Documents and to protect the rights and remedies created or intended to be created in -81- 82 favor of Lessor, Foreign Lessor or Indenture Trustee hereunder and the other Operative Documents and the Financing Documents including, without limitation, if reasonably requested by Owner Participant or Indenture Trustee, at the expense of Lessee (except it shall be at Lessor's expense if in connection with a change in the ownership of the Engine Aircraft or any other transfer or assignment by Lessor, Foreign Lessor or Indenture Trustee other than as contemplated hereunder or under the Financing - 87 - 89 Documents or in connection with an Event of Default), the execution and delivery of supplements or amendments hereto in recordable form, subjecting to this Lease, the Indenture Indenture, the Foreign Lease Documents and the other Financing Documents, any replacement Aircraft or Engine and the recording or filing of counterparts thereof in accordance with the laws of any appropriate jurisdiction. Lessee's obligations under this Section 15 are subject to the reasonable cooperation of the applicable parties.

Protection of Title and Further Assurances. Forthwith upon the execution and delivery of this Lease, the Indenture, the Trust Agreement, Lease Supplement, Indenture Supplement and Trust Supplement, and any other supplement from time to time required by the terms hereof, Lessee will cause this Lease, the Indenture, the Trust Agreement, Lease Supplement, Indenture Supplement, Trust Supplement and such other supplements to be duly filed and recorded, and maintained of record, in accordance with the applicable laws of the government of registry of the Aircraft and the Engine. If any filing or recording is reasonably necessary to protect the interests of Lessor or Indenture Trustee, Lessee shall, at its own cost and expense (except it shall be at Lessor's expense if in connection with a change in ownership of the Engine or any other transfer or assignment by Lessor other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default) and upon request by Lessor or Indenture Trustee, cause any financing statements and any and all additional instruments and other documents, so far as permitted by applicable Law, to be kept, filed, and recorded and to be re-executed, refiled and re-recorded at all times in the appropriate office pursuant or in relation to any applicable Laws of any Governmental Entity, to protect and preserve the rights and interests of Lessor or Indenture Trustee hereunder, under the Indenture and in the Engine, and Lessee shall furnish to Lessor and Indenture Trustee, evidence, reasonably satisfactory to Lessor and Indenture Trustee, of each such filing or refiling and recordation and re-recordation. Without limiting the foregoing, Lessee shall do or cause to be done, at Lessee's cost and expense (except it shall be at Lessor's expense if in connection with a change in ownership of the Engine or any other transfer or assignment by Lessor other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default), any and all acts and things within its control which may be required under the terms of the Mortgage Convention to protect and preserve the title of Lessor, the Lien of the Indenture, this Lease and the interests of Lessor and Indenture Trustee within the jurisdiction of any signatory which has ratified the Mortgage Convention in such jurisdiction and in the territories thereof in which Lessee, any Permitted Sublessee or any wet sublessee may operate the Engine, as Lessor may reasonably request. Lessee shall also do or cause to be done, at its own expense (except it shall be at Lessor's expense if in connection with a change in the ownership of the Engine or any other transfer or assignment by Lessor other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default), any and all acts and things which may be required under the terms of any other Law involving any jurisdiction in which Lessee, any Permitted Sublessee or any wet lessee may operate the Engine, which Lessor may reasonably request, to protect and preserve the title of the Lessor, this Lease, the Indenture and Lessor's and Indenture Trustee's interest in the Engine and under any of the Operative Documents or Financing Documents within any such jurisdiction. In addition, at Lessee's expense, Lessee will promptly and duly execute and deliver to Lessor or Indenture Trustee, as applicable, such further documents and assurances and take such further actions as Owner Participant or Indenture Trustee may from time to time reasonably request in order to more effectively carry out the intent and purpose of this Lease and the other Operative Documents and the Financing Documents and to protect the rights and remedies created or intended to be created in -81- 82 favor of Lessor or Indenture Trustee hereunder and the other Operative Documents and the Financing Documents including, without limitation, if reasonably requested by Owner Participant or Indenture Trustee, at the expense of Lessee (except it shall be at Lessor's expense if in connection with a change in the ownership of the Engine or any other transfer or assignment by Lessor or Indenture Trustee other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default), the execution and delivery of supplements or amendments hereto in recordable form, subjecting to this Lease, the Indenture and the other Financing Documents, any replacement Engine and the recording or filing of counterparts thereof in accordance with the laws of any appropriate jurisdiction.

Protection of Title and Further Assurances. Forthwith upon the execution and delivery of this Lease, the Indenture, the Trust Agreement, Lease Supplement, Indenture Supplement and Trust Supplement, and any other supplement from time to time required by the terms hereof, Lessee will cause this Lease, the Indenture, the Trust Agreement, Lease Supplement, Indenture Supplement, Trust Supplement and such other supplements to be duly filed and recorded, and maintained of record, in accordance with the applicable laws of the government of registry of the Aircraft and the EngineAircraft. If any filing or recording is reasonably necessary to protect the interests of Lessor or Indenture Trustee, Lessee shall, at its own cost and expense (except it shall be at Lessor's expense if in connection with a change in ownership of the Engine Aircraft or any other transfer or assignment by Lessor other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default) and upon request by Lessor, cause any financing statements and any and all additional instruments and other documents, so far as permitted by applicable Law, to be kept, filed, and recorded and to be re-executed, refiled and re-recorded at all times in the appropriate office pursuant or in relation to any applicable Laws of any Governmental Entity, to protect and preserve the rights and interests of Lessor cause or Indenture Trustee hereunder, under the Indenture and in the Aircraft, and Lessee shall furnish to Lessor and Indenture Trustee, evidence, reasonably satisfactory to Lessor and Indenture Trustee, of each such filing or refiling and recordation and re-recordation. Without limiting the foregoing, Lessee shall do or cause to be done, at Lessee's cost and expense (except it shall be at Lessor's expense if in connection with a change in ownership of the Engine Aircraft or any other transfer or assignment by Lessor other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default), any and all acts and things within its control which may be required under the terms of the Mortgage Convention to protect and preserve the title of Lessor, the Lien of the Indenture, this Lease Lease, and the interests of Lessor and Indenture Trustee within the jurisdiction of any signatory which has ratified the Mortgage Convention in such jurisdiction and in the territories thereof in which Lessee, any Permitted Sublessee or any wet sublessee may operate the EngineAircraft, as Lessor may reasonably request. Lessee shall also do or cause to be done, at its own expense (except it shall be at Lessor's expense if in connection with a change in the ownership of the Engine Aircraft or any other transfer or assignment by Lessor other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default), any and all acts and things which may be required under the terms of any other Law involving any jurisdiction in which Lessee, any Permitted Sublessee or any wet lessee may operate the EngineAircraft, which Lessor may reasonably request, to protect and preserve the title of the Lessor, this Lease, the Indenture and Lessor's and Indenture Trustee's interest in the Engine Aircraft and under any of the Operative Documents or Financing Documents within any such jurisdiction. In addition, at Lessee's expense, Lessee will promptly and duly execute and deliver to Lessor or Indenture Trustee, as applicable, such further documents and assurances and take such further actions as Owner Participant or Indenture Trustee may from time to time reasonably request in order to more effectively carry out the intent and purpose of this Lease and the other Operative Documents and the Financing Documents and to protect the rights and remedies created or intended to be created in -81- 82 favor of Lessor or Indenture Trustee hereunder and the other Operative Documents and the Financing Documents including, without limitation, if reasonably requested by Owner Participant or Indenture Trustee, at the expense of Lessee (except it shall be at Lessor's expense if in connection with a change in the ownership of the Engine Aircraft or any other transfer or assignment by Lessor or Indenture Trustee other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default), the execution and delivery of supplements or amendments hereto in recordable form, subjecting to this Lease, the Indenture and the other Financing Documents, any replacement Aircraft or Engine and the recording or filing of counterparts thereof in accordance with the laws of any appropriate jurisdiction.

Protection of Title and Further Assurances. Forthwith upon the execution and delivery of this Lease, the Indenture, the Trust Agreement, Lease Supplement, Indenture Supplement and Trust Supplement, and any other supplement from time to time required by the terms hereof, Lessee will cause this Lease, the Indenture, the Trust Agreement, Lease Supplement, Indenture Supplement, Trust Supplement and such other supplements to be duly filed and recorded, and maintained of record, in accordance with the applicable laws of the government of registry of the Aircraft and the EngineAircraft. If any filing or recording is reasonably necessary to protect the interests of Lessor or Indenture Trustee, Lessee shall, at its own cost and expense (except it shall be at Lessor's expense if in connection with a change in ownership of the Engine Aircraft or any other transfer or assignment by Lessor other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default) and upon request by Lessor or Indenture Trustee, cause any financing statements and any and all additional instruments and other documents, so far as permitted by applicable Law, to be kept, filed, and recorded and to be re-executed, refiled and re-recorded at all times in the appropriate office pursuant or in relation to any applicable Laws of any Governmental Entity, to protect and preserve the rights and interests of Lessor or Indenture Trustee hereunder, under the Indenture and in the Aircraft, and Lessee shall furnish to Lessor and Indenture Trustee, evidence, reasonably satisfactory to Lessor and Indenture Trustee, of each such filing or refiling and recordation and re-recordation. Without limiting the foregoing, Lessee shall do or cause to be done, at Lessee's cost and expense (except it shall be at Lessor's expense if in connection with a change in ownership of the Engine Aircraft or any other transfer or assignment by Lessor other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default), any and all acts and things within its control which may be required under the terms of the Mortgage Convention to protect and preserve the title of Lessor, the Lien of the Indenture, this Lease Lease, and the interests of Lessor and Indenture Trustee within the jurisdiction of any signatory which has ratified the Mortgage Convention in such jurisdiction and in the territories thereof in which Lessee, any Permitted Sublessee or any wet sublessee may operate the EngineAircraft, as Lessor or Indenture Trustee may reasonably request. Lessee shall also do or cause to be done, at its own expense (except it shall be at Lessor's expense if in connection with a change in the ownership of the Engine Aircraft or any other transfer or assignment by Lessor other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default), any and all acts and things which may be required under the terms of any other Law involving any jurisdiction in which Lessee, any Permitted Sublessee or any wet lessee may operate the EngineAircraft, which Lessor Owner Participant or Indenture Trustee may reasonably request, to protect and preserve the title of the Lessor, this Lease, the Indenture and Lessor's and Indenture Trustee's interest in the Engine Aircraft and under any of the Operative Documents or Financing Documents within any such jurisdiction. In addition, at Lessee's expense, Lessee will promptly and duly execute and deliver to Lessor or Indenture Trustee, as applicable, such further documents and assurances and take such further actions as Owner Participant or Indenture Trustee may from time to time reasonably request in order to more effectively carry out the intent and purpose of this Lease and the other Operative Documents and the Financing Documents and to protect the rights and remedies created or intended to be created in -81- 82 favor of Lessor or Indenture Trustee hereunder and the other Operative Documents and the Financing Documents including, without limitation, if reasonably requested by Owner Participant or Indenture Trustee, at the expense of Lessee (except it shall be at Lessor's expense if in connection with a change in the ownership of the Engine Aircraft or any other transfer or assignment by Lessor or Indenture Trustee other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default), the execution and delivery of supplements or amendments hereto in recordable form, subjecting to this Lease, the Indenture and the other Financing Documents, any replacement Aircraft or Engine and the recording or filing of counterparts thereof in accordance with the laws of any appropriate jurisdiction.

Protection of Title and Further Assurances. Forthwith upon the execution and delivery of this Lease, the Indenture, the Trust Agreement, Lease Supplement, Indenture Supplement and Trust Supplement, and any other supplement from time to time required by the terms hereof, Lessee will cause this Lease, the Indenture, the Trust Agreement, Lease Supplement, Indenture Supplement, Trust Supplement and such other supplements to be duly filed and recorded, and maintained of record, in accordance with the applicable laws of the government of registry of the Aircraft and the EngineAircraft. If any filing or recording is reasonably necessary to protect the interests of Lessor, Foreign Lessor or Indenture Trustee, Lessee shall, at its own cost and expense (except it shall be at Lessor's expense if in connection with a change in ownership of the Engine Aircraft or any other transfer or assignment by Lessor other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default) and upon request by Lessor Lessor, cause any financing statements and any and all additional instruments and other documents, so far as permitted by applicable Law, to be kept, filed, and recorded and to be re-executed, refiled and re-recorded at all times in the appropriate office pursuant or in relation to any Without limiting the foregoing, Lessee shall do or cause to be done, at Lessee's cost and expense (except it shall be at Lessor's expense if in connection with a change in ownership of the Engine Aircraft or any other transfer or assignment by Lessor other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default), any and all acts and things within its control which may be required under the terms of the Mortgage Convention to protect and preserve the title of Lessor or as applicable, Foreign Lessor, the Lien of the Indenture, this Lease Lease, and the interests of Lessor, Foreign Lessor and Indenture Trustee within the jurisdiction of any signatory which has ratified the Mortgage Convention in such jurisdiction and in the territories thereof in which Lessee, any Permitted Sublessee or any wet sublessee lessee may operate the EngineAircraft, as Lessor may reasonably request. Lessee shall also do or cause to be done, at its own expense (except it shall be at Lessor's expense if in connection with a change in the ownership of the Engine Aircraft or any other transfer or assignment by Lessor other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default), any and all acts and things which may be required under the terms of any other Law involving any jurisdiction in which Lessee, any Permitted Sublessee or any wet lessee may operate the EngineAircraft, which Lessor may reasonably request, to protect and preserve the title of the Lessor or as applicable, Foreign Lessor, this Lease, the Indenture and Lessor's, Foreign Lessor's and Indenture Trustee's interest in the Engine Aircraft and under any of the Operative Documents or Financing Documents within any such jurisdiction. In addition, at Lessee's expense, Lessee will promptly and duly execute and deliver to Lessor or Indenture Trustee, as applicable, such further documents and assurances and take such further actions as Owner Participant or Indenture Trustee may from time to time reasonably request in order to more effectively carry out the intent and purpose of this Lease and the other Operative Documents and the Financing Documents and to protect the rights and remedies created or intended to be created in -81- 82 favor of Lessor or Indenture Trustee hereunder and the other Operative Documents and the Financing Documents including, without limitation, if reasonably requested by Owner Participant or Indenture Trustee, at the expense of Lessee (except it shall be at Lessor's expense if in connection with a change in the ownership of the Engine or any other transfer or assignment by Lessor or Indenture Trustee other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default), the execution and delivery of supplements or amendments hereto in recordable form, subjecting to this Lease, the Indenture and the other Financing Documents, any replacement Engine and the recording or filing of counterparts thereof in accordance with the laws of any appropriate jurisdiction.in

Protection of Title and Further Assurances. Forthwith upon the execution and delivery of this Lease, the Indenture, the Trust Agreement, the Lease Supplement, Indenture Supplement and Trust Supplement, and any other supplement from time to time required by the terms hereof, Lessee will cause this Lease, the Indenture, the Trust Agreement, the Lease Supplement, Indenture Supplement, the Trust Supplement and such other supplements to be duly filed and recorded, and maintained of record, in accordance with the applicable laws of the government of registry of the Aircraft and the EngineAircraft. If any filing or recording is reasonably necessary to protect the interests of Lessor or Indenture Trustee, Lessee shall, at its own cost and expense (except it shall be at Lessor's expense if in connection with a change in ownership of the Engine Aircraft or any other transfer or assignment by Lessor other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default) and upon request by Lessor or Indenture Trustee, cause any financing statements and any and all additional instruments and other documents, so far as permitted by applicable Law, to be kept, filed, and recorded and to be re-executed, refiled and re-recorded at all times in the appropriate office pursuant or in relation to any applicable Laws of any Governmental Entity, to protect and preserve the rights and interests of Lessor or Indenture Trustee hereunder, under the Indenture and in the Aircraft, and Lessee shall furnish to Lessor and Indenture Trustee, evidence, reasonably satisfactory to Lessor and Indenture Trustee, of each such filing or refiling and recordation and re-recordation. Without limiting the foregoing, Lessee shall do or cause to be done, at Lessee's cost and expense (except it shall be at Lessor's expense if in connection with a change in ownership of the Engine Aircraft or any other transfer or assignment by Lessor other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default), any and all acts and things within its control which may be required under the terms of the Mortgage Convention to protect and preserve the title of Lessor, the Lien of the Indenture, this Lease Lease, and the interests of Lessor and Indenture Trustee within the jurisdiction of any signatory which has ratified the Mortgage Convention in such jurisdiction and in the territories thereof in which Lessee, any Permitted Sublessee or any wet sublessee may operate the EngineAircraft, as Lessor or Indenture Trustee may reasonably request. Lessee shall also do or cause to be done, at its 91 own expense (except it shall be at Lessor's expense if in connection with a change in the ownership of the Engine Aircraft or any other transfer or assignment by Lessor other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default), any and all acts and things which may be required under the terms of any other Law involving any jurisdiction in which Lessee, any Permitted Sublessee or any wet lessee may operate the EngineAircraft, which Lessor Owner Participant or Indenture Trustee may reasonably request, to protect and preserve the title of the Lessor, this Lease, the Indenture and Lessor's and Indenture Trustee's interest in the Engine Aircraft and under any of the Operative Documents or Financing Documents within any such jurisdiction. In addition, at Lessee's expense, Lessee will promptly and duly execute and deliver to Lessor or Indenture Trustee, as applicable, such further documents and assurances and take such further actions as Owner Participant or Indenture Trustee may from time to time reasonably request in order to more effectively carry out the intent and purpose of this Lease and the other Operative Documents and the Financing Documents and to protect the rights and remedies created or intended to be created in -81- 82 favor of Lessor or Indenture Trustee hereunder and the other Operative Documents and the Financing Documents including, without limitation, if reasonably requested by Owner Participant or Indenture Trustee, at the expense of Lessee (except it shall be at Lessor's expense if in connection with a change in the ownership of the Engine Aircraft or any other transfer or assignment by Lessor or Indenture Trustee other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default), the execution and delivery of supplements or amendments hereto in recordable form, subjecting to this Lease, the Indenture and the other Financing Documents, any replacement Aircraft or Engine and the recording or filing of counterparts thereof in accordance with the laws of any appropriate jurisdiction. Lessee's obligations under this Section 15 are subject to the reasonable cooperation of the applicable parties.

Protection of Title and Further Assurances. Forthwith upon the execution and delivery of this Lease, the Indenture, the Trust Agreement, Lease Supplement, Indenture Supplement and Trust Supplement, and any other supplement from time to time required by the terms hereof, Lessee will cause this Lease, the Indenture, the Trust Agreement, Lease Supplement, Indenture Supplement, Trust Supplement and such other supplements to be duly filed and recorded, and maintained of record, in accordance with the applicable laws of the government of registry of the Aircraft and the EngineAircraft. If any filing or recording is reasonably necessary to protect the interests of Lessor or Indenture Trustee, Lessee shall, at its own cost and expense (except it shall be at Lessor's expense if in connection with a change in ownership of the Engine Aircraft or any other transfer or assignment by Lessor other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default) and upon request by Lessor Lessor, cause any financing statements and any and all additional instruments and other documents, so far as permitted by applicable Law, to be kept, filed, and recorded and to be re-executed, refiled and re-recorded at all times in the appropriate office pursuant or in relation to any applicable Laws of any Governmental Entity, to protect and preserve the rights and interests of Without limiting the foregoing, Lessee shall do or cause to be done, at Lessee's cost and expense (except it shall be at Lessor's expense if in connection with a change in ownership of the Engine Aircraft or any other transfer or assignment by Lessor other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default), any and all acts and things within its control which may be required under the terms of the Mortgage Convention to protect and preserve the title of Lessor, the Lien of the Indenture, this Lease Lease, and the interests of Lessor and Indenture Trustee within the jurisdiction of any signatory which has ratified the Mortgage Convention in such jurisdiction and in the territories thereof in which Lessee, any Permitted Sublessee or any wet sublessee lessee may operate the EngineAircraft, as Lessor may reasonably request. Lessee shall also do or cause to be done, at its own expense (except it shall be at Lessor's expense if in connection with a change in the ownership of the Engine Aircraft or any other transfer or assignment by Lessor other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default), any and all acts and things which may be required under the terms of any other Law involving any jurisdiction in which Lessee, any Permitted Sublessee or any wet lessee may operate the EngineAircraft, which Lessor may reasonably request, to protect and preserve the title of the Lessor, this Lease, the Indenture and Lessor's and Indenture Trustee's interest in the Engine Aircraft and under any of the Operative Documents or Financing Documents within any such jurisdiction. In addition, at Lessee's expense, Lessee will promptly and duly execute and deliver to Lessor or Indenture Trustee, as applicable, such further documents and assurances and take such further actions as Owner Participant or Indenture Trustee may from time to time reasonably request in order to more effectively carry out the intent and purpose of this Lease and the other Operative Documents and the Financing Documents and to protect the rights and remedies created or intended to be created in -81- 82 favor of Lessor or Indenture Trustee hereunder and the other Operative Documents and the Financing Documents including, without limitation, if reasonably requested by Owner Participant or Indenture Trustee, at the expense of Lessee (except it shall be at Lessor's expense if in connection with a change in the ownership of the Engine Aircraft or any other transfer or assignment by Lessor or Indenture Trustee other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default), the execution and delivery of supplements or amendments hereto in recordable form, subjecting to this Lease, the Indenture and the other Financing Documents, any replacement Engine and the recording or filing of counterparts thereof in accordance with the laws of any appropriate jurisdiction.other

Protection of Title and Further Assurances. Forthwith upon the execution and delivery of this Lease, the Indenture, the Trust Agreement, Lease Supplement, Indenture Supplement and Trust Supplement, and any other supplement from time to time required by the terms hereof, Lessee will cause this Lease, the Indenture, the Trust Agreement, Lease Supplement, Indenture Supplement, Trust Supplement and such other supplements to be duly filed and recorded, and maintained of record, in accordance with the applicable laws of the government of registry of the Aircraft and the EngineAircraft. If any filing or recording is reasonably necessary to protect the interests of Lessor or Indenture Trustee, Lessee shall, at its own cost and expense (except it shall be at Lessor's expense if in connection with a change in ownership of the Engine Aircraft or any other transfer or assignment by Lessor other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default) and upon request by Lessor, cause any financing statements and any and all additional instruments and other documents, so far as permitted by applicable Law, to be kept, filed, and recorded and to be re-executed, refiled and re-recorded at all times in the appropriate office pursuant or in relation to any applicable Laws of any Governmental Entity, to protect and preserve the rights and interests of Lessor cause or Indenture Trustee hereunder, under the Indenture 91 and in the Aircraft, and Lessee shall furnish to Lessor and Indenture Trustee, evidence, reasonably satisfactory to Lessor and Indenture Trustee, of each such filing or refiling and recordation and re-recordation. Without limiting the foregoing, Lessee shall do or cause to be done, at Lessee's cost and expense (except it shall be at Lessor's expense if in connection with a change in ownership of the Engine Aircraft or any other transfer or assignment by Lessor other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default), any and all acts and things within its control which may be required under the terms of the Mortgage Convention to protect and preserve the title of Lessor, the Lien of the Indenture, this Lease Lease, and the interests of Lessor and Indenture Trustee within the jurisdiction of any signatory which has ratified the Mortgage Convention in such jurisdiction and in the territories thereof in which Lessee, any Permitted Sublessee or any wet sublessee may operate the EngineAircraft, as Lessor may reasonably request. Lessee shall also do or cause to be done, at its own expense (except it shall be at Lessor's expense if in connection with a change in the ownership of the Engine Aircraft or any other transfer or assignment by Lessor other than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default), any and all acts and things which may be required under the terms of any other Law involving any jurisdiction in which Lessee, any Permitted Sublessee or any wet lessee may operate the EngineAircraft, which Lessor may reasonably request, to protect and preserve the title of the Lessor, this Lease, the Indenture and Lessor's and Indenture Trustee's interest in the Engine Aircraft and under any of the Operative Documents or Financing Documents within any such jurisdiction. In addition, at Lessee's expense, Lessee will promptly and duly execute and deliver to Lessor or Indenture Trustee, as applicable, such further documents and assurances and take such further actions as Owner Participant or Indenture Trustee may from time to time reasonably request in order to more effectively carry out the intent and purpose of this Lease and the other Operative Documents and the Financing Documents and to protect the rights and remedies created or intended to be created in -81- 82 favor of Lessor or Indenture Trustee hereunder and the other Operative Documents and the Financing Documents including, without limitation, if reasonably requested by Owner Participant or Indenture Trustee, at the expense of Lessee (except it shall be at Lessor's expense if in connection with a change in the ownership of the Engine Aircraft or any other transfer or assignment by Lessor or Indenture Trustee other 92 than as contemplated hereunder or under the Financing Documents or in connection with an Event of Default), the execution and delivery of supplements or amendments hereto in recordable form, subjecting to this Lease, the Indenture and the other Financing Documents, any replacement Aircraft or Engine and the recording or filing of counterparts thereof in accordance with the laws of any appropriate jurisdiction.