MORTGAGE PASS-THROUGH CERTIFICATES SERIES 2005-FA9 TERMS AGREEMENT (to Underwriting Agreement, dated August 23, 2005 between the Company and the Underwriter)

                       FIRST HORIZON ASSET SECURITIES INC.

                       MORTGAGE PASS-THROUGH CERTIFICATES
                                 SERIES 2005-FA9

                                 TERMS AGREEMENT
                           (to Underwriting Agreement,
                              dated August 23, 2005
                    between the Company and the Underwriter)

First Horizon Asset Securities Inc.                           New York, New York
0000 Xxxxxxx Xxx                                                October 24, 2005
Irving, Texas 75063

         Credit Suisse First Boston LLC (the "Underwriter") agrees, subject to
the terms and provisions herein and of the captioned Underwriting Agreement (the
"Underwriting Agreement"), to purchase such Classes of Series 2005-FA9
Certificates specified in Section 2(a) hereof (the "Offered Certificates"). This
letter supplements and modifies the Underwriting Agreement solely as it relates
to the purchase and sale of the Offered Certificates described below. The Series
2005-FA9 Certificates are registered with the Securities and Exchange Commission
by means of an effective Registration Statement (No. 333-125158). Capitalized
terms used and not defined herein have the meanings given them in the
Underwriting Agreement.

         Section 1. The Mortgage Pool: The Series 2005-FA9 Certificates shall
evidence the entire beneficial ownership interest in a pool (the "Mortgage
Pool") of conventional, fixed rate, first lien, fully amortizing, one- to
four-family residential mortgage loans (the "Mortgage Loans") having the
following characteristics as of October 1, 2005 (the "Cut-off Date"):

                  (a) Aggregate Principal Amount of the Mortgage Pool:
         Approximately $460,003,803.07 aggregate principal balance as of the
         Cut-off Date, subject to an upward or downward variance of up to 5%,
         the precise aggregate principal balance to be determined by the
         Company.

                  (b) Original Terms to Maturity: The original term to maturity
         of each Mortgage Loan shall be between 240 and 360 months.

         Section 2.   The Certificates:  The Offered Certificates shall be
issued as follows:

                  (a) Classes: The Offered Certificates shall be issued with the
         following Class designations, interest rates and principal balances,
         subject in the aggregate to the variance referred to in Section 1(a)
         and, as to any particular Class, to an upward or downward variance of
         up to 5%:


                                                         Class Purchase
      Class     Principal Balance    Interest Rate      Price Percentage
      -----     ------------------   -------------      ----------------
       B-1         $9,200,000.00         5.500%           96.310000000%
       B-2         $3,910,000.00         5.500%           94.902500000%
       B-3         $2,300,000.00         5.500%           90.590000000%

(1)    The interest rates for these classes of Certificates are variable and
       will be calculated as described in the Prospectus Supplement.

                  (b) The Offered Certificates shall have such other
         characteristics as described in the related Prospectus.

         Section 3. Purchase Price: The Purchase Price for each Class of the
Offered Certificates shall be the Class Purchase Price Percentage therefor (as
set forth in Section 2(a) above) of the initial Class Certificate Principal
Balance thereof plus accrued interest at the per annum initial interest rate
applicable thereto from and including the Cut-off Date up to, but not including,
October 28, 2005 (the "Closing Date").

         Section 4. Required Ratings: The Offered Certificates shall have
received Required Ratings of (i) at least "AA" from Standard and Poor's Ratings
Services, a division of The XxXxxx-Xxxx Companies, Inc. ("S&P") in the case of
the Class B-1 Certificates, (ii) at least " A" from S&P in the case of the Class
B-2 Certificates and (iii) at least "BBB" from S&P in the case of the Class B-3
Certificates.

         Section 5. Tax Treatment:  One or more elections will be made to treat
the assets of the Trust Fund as a REMIC.

                                       2


Terms to CSFB Underwriting Agreement

         If the foregoing is in accordance with your understanding of our
agreement, please sign and return to the undersigned a counterpart hereof,
whereupon this letter and your acceptance shall represent a binding agreement
between the Underwriter and the Company.

                                      Very truly yours,

                                      CREDIT SUISSE FIRST BOSTON LLC



                                      By:
                                         ---------------------------------------
                                         Name:
                                         Title:

The foregoing Agreement is
hereby confirmed and accepted
as of the date first above written.



FIRST HORIZON ASSET SECURITIES INC.


By:
   --------------------------------
    Name:   Xxxxxx Xxxxx
    Title:  Vice President



FIRST HORIZON HOME LOAN CORPORATION


By:
   --------------------------------
    Name:    Xxxxx XxXxx
    Title:   Executive Vice President