POOLING AND SERVICING AGREEMENT

THIS POOLING AND SERVICING AGREEMENT, dated as of September 1, 2006, among FIRST HORIZON ASSET SECURITIES INC., a Delaware corporation, as depositor (the “Depositor”), FIRST HORIZON HOME LOAN CORPORATION, a Kansas corporation, as master servicer (the “Master Servicer”), and THE BANK OF NEW YORK, a banking corporation organized under the laws of the State of New York, as trustee (the “Trustee”).

In consideration of the mutual agreements herein contained, the parties hereto agree as follows:

The Depositor is the owner of the Trust Fund that is hereby conveyed to the Trustee in return for the Certificates. The Trust Fund for federal income tax purposes will consist of three separate REMICs. The Certificates will represent the entire beneficial ownership interest in the Trust Fund. The Regular Certificates will represent “regular interests” in the Upper REMIC. The Class I-A-R Certificates will represent the residual interests in the Lower REMIC, Middle REMIC and Upper REMIC, as described in Section 2.7. The “latest possible maturity date” for federal income tax purposes of each REMIC regular interest created hereby will be the Latest Possible Maturity Date.

The following table sets forth characteristics of the Certificates, together with the minimum denominations and integral multiples in excess thereof in which such Classes shall be issuable (except that one Certificate of each Class of Certificates may be issued in a different amount and, in addition, one Residual Certificate representing the Tax Matters Person Certificate may be issued in a different amount):

(1) The actual final payment on the Certificates could occur earlier or later than the Final Scheduled Distribution Date.

(2) The Pass-Through Rates for the Class I-A-1 Certificates for each subsequent Distribution Date will equal the Weighted Average Adjusted Net Mortgage Rate for Pool I, as of the first day of the month immediately prior to the month in which the relevant Distribution Date occurs, after taking into account scheduled payments of principal on that date and any Principal Prepayments received on or after such date and distributed to Certificateholders on the prior Distribution Date, less 0.5000%.

(3) The Pass-Through Rates for the Class I-A-2 and Class I-A-R Certificates for each subsequent Distribution Date will equal the Weighted Average Adjusted Net Mortgage Rate for Pool I, as of the first day of the month immediately prior to the month in which the relevant Distribution Date occurs, after taking into account scheduled payments of principal on that date and any Principal Prepayments received on or after such date and distributed to Certificateholders on the prior Distribution Date.

(4) The Class I-A-IO Certificates are Notional Amount Certificates that will accrue interest during each Interest Accrual Period on a Notional Amount equal to the Class Certificate Balance of the Class I-A-1 Certificates.

(5) The Pass-Through Rates for the Class II-A-1 Certificates for each subsequent Distribution Date will equal the Weighted Average Adjusted Net Mortgage Rate for Pool II, as of the first day of the month immediately prior to the month in which the relevant Distribution Date occurs, after taking into account scheduled payments of principal on that date and any Principal Prepayments received on or after such date and distributed to Certificateholders on the prior Distribution Date.

(6) The Pass-Through Rates for the Class III-A-1 Certificates for each subsequent Distribution Date will equal the Weighted Average Adjusted Net Mortgage Rate for Pool III, as of the first day of the month immediately prior to the month in which the relevant Distribution Date occurs, after taking into account scheduled payments of principal on that date and any Principal Prepayments received on or after such date and distributed to Certificateholders on the prior Distribution Date.

(7) The Pass-Through Rates for the Subordinated Certificates for each subsequent Distribution Date will equal the weighted average of the Weighted Average Adjusted Net Mortgage Rates for each Mortgage Pool, weighted on the basis of the Group Subordinate Amount for each Mortgage Pool, as of the first day of the month immediately prior to the month in which the relevant Distribution Date occurs, after taking into account scheduled payments of principal on that date and any Principal Prepayments received on or after such date and distributed to Certificateholders on the prior Distribution Date.

With respect to any of the foregoing designations as to which the corresponding reference is “None,” all defined terms and provisions herein relating solely to such designations shall be of no force or effect, and any calculations herein incorporating references to such designations shall be interpreted without reference to such designations and amounts. Defined terms and provisions herein relating to statistical rating agencies not designated above as Rating Agencies shall be of no force or effect.

Whenever used in this Agreement, the following words and phrases, unless the context otherwise requires, shall have the following meanings:

Accrued Certificate Interest: For any Class of Certificates for any Distribution Date, the interest accrued during the related Interest Accrual Period at the applicable Pass-Through Rate on the Class Certificate Balance (or notional amount in the case of the Notional Amount Certificates) of such Class of Certificates immediately prior to such Distribution Date, less such Class’ share of any Net Interest Shortfall.

Additional Designated Information: As defined in Section 10.2.

Adjusted Mortgage Rate: As to each Mortgage Loan, and at any time, the per annum rate equal to the Mortgage Rate less the Master Servicing Fee Rate.

Adjusted Net Mortgage Rate: As to each Mortgage Loan, and at any time, the per annum rate equal to the Mortgage Rate less the related Expense Fee Rate.

Adjustment Date: A date specified in each Mortgage Note as a date on which the Mortgage Rate on the related Mortgage Loan will be adjusted.

Advance: The payment required to be made by the Master Servicer with respect to any Distribution Date pursuant to Section 4.1, the amount of any such payment being equal to the aggregate of payments of principal and interest (net of the Master Servicing Fee and net of any net income in the case of any REO Property) on the Mortgage Loans that were due on the related Due Date and not received as of the close of business on the related Determination Date, less the aggregate amount of any such delinquent payments that the Master Servicer has determined would constitute a Nonrecoverable Advance if advanced.

Aggregate Senior Percentage: For any Distribution Date, the percentage (carried to eight decimal places) equal to (x) the sum of the Class Certificate Balances of the Senior Certificates (other than the Notional Amount Certificates) of all Certificate Groups immediately prior to such Distribution Date, divided by (y) the aggregate Pool Principal Balance for all of the Mortgage Pools on such Distribution Date.

Aggregate Subordinated Percentage: For any Distribution Date, the percentage (carried to eight decimal places) equal to (x) the sum of the Class Certificate Balances of the Subordinated Certificates immediately prior to such Distribution Date, divided by (y) the aggregate Pool Principal Balance for all of the Mortgage Pools on such Distribution Date.

Agreement: This Pooling and Servicing Agreement and all amendments or supplements hereto.

Allocable Share: With respect to any Class of Subordinated Certificates on any Distribution Date, such Class’ pro rata share (based on the Class Certificate Balance of each Class entitled thereto) of the Subordinated Optimal Principal Amount for each Mortgage Pool; provided, that, except as provided in this Agreement, no Subordinated Certificates (other than the Class of Subordinated Certificates with the highest priority of distribution) shall be entitled on any Distribution Date to receive distributions pursuant to clauses (2), (3) and (5) of the definition of Subordinated Optimal Principal Amount unless the Class Prepayment Distribution Trigger for such Class is satisfied for such Distribution Date.

Alternative Title Product: Any one of the following: (i) Lien Protection Insurance issued by Integrated Loan Services or ATM Corporation of America, (ii) a Mortgage Lien Report issued by EPN Solutions/ACRAnet, (iii) a Property Plus Report issued by Rapid Refinance Service through SharperLending.com, or (iv) such other alternative title insurance product that the Seller utilizes in connection with its then current underwriting criteria.

Amount Held for Future Distribution: As to any Distribution Date, the aggregate amount held in the applicable subaccount of the Certificate Account at the close of business on the related Determination Date on account of (i) Principal Prepayments on the related Mortgage Pool received after the related Prepayment Period and Liquidation Proceeds in the related Mortgage Pool received in the month of such Distribution Date and (ii) all Scheduled Payments in the related Mortgage Pool due after the related Due Date.

Apportioned Principal Balance: For any Class of Subordinated Certificates and any Distribution Date, an amount equal to the Class Certificate Balance of such Class immediately prior to that Distribution Date multiplied by a fraction, the numerator of which is the applicable Group Subordinate Amount for such Distribution Date and the denominator of which is the sum of the Group Subordinate Amounts for such Distribution Date.

Appraised Value: With respect to any Mortgage Loan, the Appraised Value of the related Mortgaged Property shall be: (i) with respect to a Mortgage Loan other than a Refinancing Mortgage Loan, the lesser of (a) the value of the Mortgaged Property based upon the appraisal made at the time of the origination of such Mortgage Loan and (b) the sales price of the Mortgaged Property at the time of the origination of such Mortgage Loan; (ii) with respect to a Refinancing Mortgage Loan other than a Streamlined Documentation Mortgage Loan, the value of the Mortgaged Property based upon the appraisal made at the time of the origination of such Refinancing Mortgage Loan; and (iii) with respect to a Streamlined Documentation Mortgage Loan, (a) if the loan-to-value ratio with respect to the Original Mortgage Loan at the time of the origination thereof was 90% or less, the value of the Mortgaged Property based upon the appraisal made at the time of the origination of the Original Mortgage Loan and (b) if the loan-to-value ratio with respect to the Original Mortgage Loan at the time of the origination thereof was greater than 90%, the value of the Mortgaged Property based upon the appraisal (which may be a drive-by appraisal) made at the time of the origination of such Streamlined Documentation Mortgage Loan.

Available Funds: For each Mortgage Pool, with respect to any Distribution Date, an amount equal to the sum of:

Bankruptcy Code: The United States Bankruptcy Reform Act of 1978, as amended.

Bankruptcy Coverage Termination Date: The date on which the Bankruptcy Loss Coverage Amount is reduced to zero.

Bankruptcy Loss: With respect to any Mortgage Loan, a Deficient Valuation or Debt Service Reduction; provided, however, that a Bankruptcy Loss shall not be deemed a Bankruptcy Loss hereunder so long as the Master Servicer has notified the Trustee in writing that the Master Servicer is diligently pursuing any remedies that may exist in connection with the related Mortgage Loan and either (A) the related Mortgage Loan is not in default with regard to payments due thereunder or (B) delinquent payments of principal and interest under the related Mortgage Loan and any related escrow payments in respect of such Mortgage Loan are being advanced on a current basis by the Master Servicer, in either case without giving effect to any Debt Service Reduction or Deficient Valuation.

Bankruptcy Loss Coverage Amount: As of any Determination Date, the Bankruptcy Loss Coverage Amount shall equal the Initial Bankruptcy Coverage Amount as reduced by (i) the aggregate amount of Bankruptcy Losses allocated to the Certificates since the Cut-off Date and (ii) any permissible reductions in the Bankruptcy Loss Coverage Amount as evidenced by a letter of each Rating Agency to the Trustee to the effect that any such reduction will not result in a downgrading of the then current ratings assigned to the Classes of Certificates rated by it. As of any Distribution Date on or after the Cross-over Date, the Bankruptcy Loss Coverage Amount will be zero.

Blanket Mortgage: The mortgage or mortgages encumbering the Cooperative Property.

Book-Entry Certificates: As specified in the Preliminary Statement.

Business Day: Any day other than (i) a Saturday or a Sunday, or (ii) a day on which banking institutions in the City of Dallas, or the State of Texas or the city in which the Corporate Trust Office of the Trustee is located are authorized or obligated by law or executive order to be closed.

Certificate: Any one of the Certificates executed by the Trustee in substantially the forms attached hereto as exhibits.

Certificate Account: The separate Eligible Account or Accounts created and maintained by the Master Servicer pursuant to Section 3.5 with a depository institution in the name of the Master Servicer for the benefit of the Trustee on behalf of Certificateholders and designated “First Horizon Home Loan Corporation in trust for the registered holders of First Horizon Asset Securities Inc. Mortgage Pass-Through Certificates, Series 2006-AR3.”

Certificate Group: As specified in the Preliminary Statement.

Certificate Owner: With respect to a Book-Entry Certificate, the Person who is the beneficial owner of such Book-Entry Certificate.

Certificate Principal Balance: With respect to any Certificate and as of any Distribution Date, the Certificate Principal Balance on the date of the initial issuance of such Certificate, as reduced by:

(a)   all amounts distributed on previous Distribution Dates on such Certificate on account of principal,

(b)   the principal portion of all Realized Losses previously allocated to such Certificate, and

(c)   in the case of a Subordinated Certificate, such Certificate’s pro rata share, if any, of the Subordinated Certificate Writedown Amount for previous Distribution Dates.

Certificate Register: The register maintained pursuant to Section 5.2 hereof.

Certificateholder or Holder: The person in whose name a Certificate is registered in the Certificate Register, except that, solely for the purpose of giving any consent pursuant to this Agreement, any Certificate registered in the name of the Depositor or the Seller or any affiliate or agent of the Depositor or the Seller shall be deemed not to be Outstanding and the Percentage Interest evidenced thereby shall not be taken into account in determining whether the requisite amount of Percentage Interests necessary to effect such consent has been obtained; provided, however, that if any such Person (including the Depositor) owns 100% of the Percentage Interests evidenced by a Class of Certificates, such Certificates shall be deemed to be Outstanding for purposes of any provision hereof that requires the consent of the Holders of Certificates of a particular Class as a condition to the taking of any action hereunder. The Trustee is entitled to rely conclusively on a certification of the Depositor or any affiliate of the Depositor in determining which Certificates are registered in the name of an affiliate of the Depositor.

Certification Party: As defined in Section 10.5.

Certifying Person: As defined in Section 10.5.

Class: All Certificates bearing the same class designation as set forth in the Preliminary Statement.

Class Certificate Balance: With respect to any Class of Certificates and as of any Distribution Date the aggregate of the Certificate Principal Balances of all Certificates of such Class as of such date, plus the amount of any Unanticipated Recoveries added to the Class Certificate Balance of such Class of Certificate pursuant to Section 4.2(h).

Class Prepayment Distribution Trigger: For a Class of Subordinated Certificates (other than the Class of Subordinated Certificates with the highest priority of distribution), a trigger that is satisfied on any Distribution Date on which a fraction (expressed as a percentage), the numerator of which is the aggregate Class Certificate Balance of such Class and each Class subordinate thereto, if any, and the denominator of which is the aggregate Pool Principal Balance for all the Mortgage Pools with respect to such Distribution Date, equals or exceeds such percentage calculated as of the Closing Date.

Closing Date: September 29, 2006.

Code: The Internal Revenue Code of 1986, including any successor or amendatory provisions.

COFI: Not applicable.

COFI Certificates: Not applicable.

Compensating Interest: As to any Distribution Date and any Principal Prepayment in respect of a Mortgage Loan that is received during the period from the sixteenth day of the month (or, in the case of the first Distribution Date, from the Cut-off Date) prior to the month of such Distribution Date through the last day of such month, an additional payment to the related Mortgage Pool made by the Master Servicer, to the extent funds are available from the Master Servicing Fee, equal to the amount of interest at the Adjusted Net Mortgage Rate for that Mortgage Loan from the date of the prepayment to the related Due Date; provided that the aggregate of all such payments as to the Mortgage Loans in a Mortgage Pool shall not exceed 0.0083% of the Pool Principal Balance of such Mortgage Pool as of the related Determination Date, and provided further that if a partial Principal Prepayment is applied on or after the first day of the month following the month of receipt, no additional payment is required for such Principal Prepayment.

Component: Not applicable.

Component Certificates: Not applicable.

Component Principal Balance: Not applicable.

Cooperative Corporation: The entity that holds title (fee or an acceptable leasehold estate) to the real property and improvements constituting the Cooperative Property and which governs the Cooperative Property, which Cooperative Corporation must qualify as a Cooperative Housing Corporation under Section 216 of the Code.

Coop Shares: Shares issued by a Cooperative Corporation.

Cooperative Loan: Any Mortgage Loan secured by Coop Shares and a Proprietary Lease.

Cooperative Property: The real property and improvements owned by the Cooperative Corporation, including the allocation of individual dwelling units to the holders of the Coop Shares of the Cooperative Corporation.

Cooperative Unit: A single family dwelling located in a Cooperative Property.

Corporate Trust Office: The designated office of the Trustee in the State of New York at which at any particular time its corporate trust business with respect to this Agreement shall be administered, which office at the date of the execution of this Agreement is located at The Bank of New York, 101 Barclay Street, 8W, New York, New York 10286 (Attn: Corporate Trust Administration—First Horizon Asset Securities Inc. Series 2006-AR3), facsimile no. (212) 815-3986, and which is the address to which notices to and correspondence with the Trustee should be directed.

Corresponding Classes: As to any Middle REMIC Interest identified in Section 2.7, the Class or Classes that are identified in Section 2.7 as corresponding to such Middle REMIC Interest.

Corresponding Classes of Middle REMIC Interests: As to any Lower REMIC Interest identified in Section 2.7, the Middle REMIC Interest or Middle REMIC Interests that are identified in Section 2.7 corresponding to such Lower REMIC Interest.

Cross-over Date: The Distribution Date on which the respective Class Certificate Balances of each Class of Subordinated Certificates have been reduced to zero.

Custodial Agreement: The Custodial Agreement dated as of September 29, 2006 by and among the Trustee, the Master Servicer and the Custodian.

Custodian: First Tennessee Bank National Association, a national banking association, and its successors and assigns, as custodian under the Custodial Agreement.

Cut-off Date: September 1, 2006.

Cut-off Date Pool Principal Balance: With respect to Pool I, $178,303,966; with respect to Pool II, $27,155,723; and with respect to Pool III, $24,439,796.

Cut-off Date Principal Balance: As to any Mortgage Loan, the Stated Principal Balance thereof as of the close of business on the Cut-off Date.

Debt Service Reduction: With respect to any Mortgage Loan, a reduction by a court of competent jurisdiction in a proceeding under the Bankruptcy Code in the Scheduled Payment for such Mortgage Loan which became final and non-appealable, except such a reduction resulting from a Deficient Valuation or any reduction that results in a permanent forgiveness of principal.

Defective Mortgage Loan: Any Mortgage Loan which is required to be repurchased pursuant to Section 2.2 or 2.3.

Deficient Valuation: With respect to any Mortgage Loan, a valuation by a court of competent jurisdiction of the Mortgaged Property in an amount less than the then-outstanding indebtedness under the Mortgage Loan, or any reduction in the amount of principal to be paid in connection with any Scheduled Payment that results in a permanent forgiveness of principal, which valuation or reduction results from an order of such court which is final and non-appealable in a proceeding under the Bankruptcy Code.

Definitive Certificates: Any Certificate evidenced by a Physical Certificate and any Certificate issued in lieu of a Book-Entry Certificate pursuant to Section 5.2(e).

Delay Certificates: As specified in the Preliminary Statement.

Delay Delivery Mortgage Loans: The Mortgage Loans for which all or a portion of a related Mortgage File is not delivered to the Trustee on the Closing Date. The number of Delay Delivery Mortgage Loans shall not exceed 25% of the aggregate number of Mortgage Loans as of the Closing Date.

Deleted Mortgage Loan: As defined in Section 2.3(b) hereof.

Denomination: With respect to each Certificate, the amount set forth on the face thereof as the “Initial Certificate Balance of this Certificate” or the Percentage Interest appearing on the face thereof.

Depositor: First Horizon Asset Securities Inc., a Delaware corporation, or its successor in interest.

Depository: The initial Depository shall be The Depository Trust Company, the nominee of which is CEDE & Co., as the registered Holder of the Book-Entry Certificates. The Depository shall at all times be a “clearing corporation” as defined in Section 8-102(a)(5) of the Uniform Commercial Code of the State of New York.

Depository Participant: A broker, dealer, bank or other financial institution or other Person for whom from time to time a Depository effects book-entry transfers and pledges of securities deposited with the Depository.

Determination Date: As to any Distribution Date, the earlier of (i) the third Business Day after the 15th day of each month, and (ii) the second Business Day prior to the related Distribution Date.

Distribution Account: The separate Eligible Account created and maintained by the Trustee pursuant to Section 3.5 in the name of the Trustee for the benefit of the Certificateholders and designated “The Bank of New York, in trust for registered Holders of First Horizon Asset Securities Inc. Mortgage Pass-Through Certificates, Series 2006-AR3.” Funds in the Distribution Account shall be held in trust for the Certificateholders for the uses and purposes set forth in this Agreement.

Distribution Account Deposit Date: As to any Distribution Date, 1:30 p.m. Central time on the Business Day immediately preceding such Distribution Date.

Distribution Date: The 25th day of each calendar month after the initial issuance of the Certificates, or if such 25th day is not a Business Day, the next succeeding Business Day, commencing in October 2006.

Due Date: With respect to any Distribution Date, the first day of the month in which the related Distribution Date occurs.

EDGAR: The SEC’s Electronic Data Gathering, Analysis and Retrieval system.

Eligible Account: Any of (i) an account or accounts maintained with a federal or state chartered depository institution or trust company the short-term unsecured debt obligations of which (or, in the case of a depository institution or trust company that is the principal subsidiary of a holding company, the debt obligations of such holding company) have the highest short-term ratings of each Rating Agency at the time any amounts are held on deposit therein, or (ii) an account or accounts in a depository institution or trust company in which such accounts are insured by the FDIC or the SAIF (to the limits established by the FDIC or the SAIF, as applicable) and the uninsured deposits in which accounts are otherwise secured such that, as evidenced by an Opinion of Counsel delivered to the Trustee and to each Rating Agency, the Certificateholders have a claim with respect to the funds in such account or a perfected first priority security interest against any collateral (which shall be limited to Permitted Investments) securing such funds that is superior to claims of any other depositors or creditors of the depository institution or trust company in which such account is maintained, or (iii) a trust account or accounts maintained with (a) the trust department of a federal or state chartered depository institution or (b) a trust company, acting in its fiduciary capacity or (iv) any other account acceptable to each Rating Agency. Eligible Accounts may bear interest, and may include, if otherwise qualified under this definition, accounts maintained with the Trustee.

ERISA: The Employee Retirement Income Security Act of 1974, as amended.

ERISA-Qualifying Underwriting: With respect to any ERISA-Restricted Certificate, a best efforts or firm commitment underwriting or private placement that meets the requirements of the Underwriters’ Exemption.

ERISA-Restricted Certificate: As specified in the Preliminary Statement.

Escrow Account: The Eligible Account or Accounts established and maintained pursuant to Section 3.6(a) hereof.

Event of Default: As defined in Section 7.1 hereof.

Excess Loss: The amount of any (i) Fraud Loss realized after the Fraud Loss Coverage Termination Date, (ii) Special Hazard Loss realized after the Special Hazard Coverage Termination Date or (iii) Deficient Valuation realized after the Bankruptcy Coverage Termination Date.

Excess Proceeds: With respect to any Liquidated Mortgage Loan, the amount, if any, by which the sum of any Liquidation Proceeds, Insurance Proceeds and/or Unanticipated Recoveries in respect of such Mortgage Loan received in the calendar month in which such Mortgage Loan became a Liquidated Mortgage Loan, net of any amounts previously reimbursed to the Master Servicer as Nonrecoverable Advance(s) with respect to such Mortgage Loan pursuant to Section 3.8(a)(iii), exceeds (i) the unpaid principal balance of such Liquidated Mortgage Loan as of the Due Date in the month in which such Mortgage Loan became a Liquidated Mortgage Loan plus (ii) accrued interest at the Mortgage Rate from the Due Date as to which interest was last paid or advanced (and not reimbursed) to Certificateholders up to the Due Date applicable to the Distribution Date immediately following the calendar month during which such liquidation occurred.

Exchange Act: The Securities Exchange Act of 1934, as amended, and the rules and regulations promulgated thereunder.

Exchange Act Reports: Any reports on Form 10-D, Form 8-K and Form 10-K required to be filed by the Depositor with respect to the Trust Fund under the Exchange Act.

Expense Fee Rate: As to each Mortgage Loan, the sum of the related Master Servicing Fee Rate and the Trustee Fee Rate.

FDIC: The Federal Deposit Insurance Corporation, or any successor thereto.

FHLMC: The Federal Home Loan Mortgage Corporation, a corporate instrumentality of the United States created and existing under Title III of the Emergency Home Finance Act of 1970, as amended, or any successor thereto.

FIRREA: The Financial Institutions Reform, Recovery, and Enforcement Act of 1989.

First Horizon: First Horizon Home Loan Corporation, a Kansas corporation and an indirect wholly owned subsidiary of First Horizon National Corporation, a Tennessee corporation.

Fitch: Fitch Ratings and its successors and/or assigns. If Fitch is designated as a Rating Agency in the Preliminary Statement, for purposes of Section 11.5(b) the address for notices to Fitch shall be Fitch, Inc., One State Street Plaza, New York, New York 10004, Attention: Residential Mortgage Surveillance Group, or such other address as Fitch may hereafter furnish to the Depositor and the Master Servicer.

FNMA: The Federal National Mortgage Association, a federally chartered and privately owned corporation organized and existing under the Federal National Mortgage Association Charter Act, or any successor thereto.

Form 10-D Disclosure Item: With respect to any Person, any material litigation or governmental proceedings pending against such Person, or against any of the Trust Fund, the Depositor, the Trustee, the Co-Trustee, the Master Servicer or any Subservicer that is material to the Certificateholders if such Person has actual knowledge thereof.

Form 10-K Disclosure Item: With respect to any Person, (a) any Form 10-D Disclosure Item, and (b) any affiliations or relationships between such Person and any Item 1119 Party other than the Depositor, the Master Servicer or any affiliate of either.

Fraud Loan: A Liquidated Mortgage Loan as to which a Fraud Loss has occurred.

Fraud Loss Coverage Amount: As of the Closing Date, $4,597,988. As of any Distribution Date from the first anniversary of the Cut-off Date and prior to the fifth anniversary of the Cut-off Date, the Fraud Loss Coverage Amount will equal $2,298,994 minus the aggregate amount of Fraud Losses that would have been allocated to the Subordinated Certificates in the absence of the Loss Allocation Limitation since the Cut-off Date. As of any Distribution Date on or after the earlier of the Cross-over Date or the   fifth   anniversary of the Cut-off Date, the Fraud Loss Coverage Amount shall be zero.

Fraud Loss Coverage Termination Date: The date on which the Fraud Loss Coverage Amount is reduced to zero.

Fraud Losses: Realized Losses on Mortgage Loans as to which a loss is sustained by reason of a default arising from fraud, dishonesty or misrepresentation in connection with the related Mortgage Loan, including a loss by reason of the denial of coverage under any related Primary Insurance Policy because of such fraud, dishonesty or misrepresentation.

Group Subordinate Amount: For a Mortgage Pool and any Distribution Date; the excess of (a) the Pool Principal Balance of such Mortgage Pool for such Distribution Date, over (b) the aggregate Class Certificate Balance of the Senior Certificates of the related Certificate Group immediately prior to that Distribution Date.

Index: Not applicable.

Indirect Participant: A broker, dealer, bank or other financial institution or other Person that clears through or maintains a custodial relationship with a Depository Participant.

Initial Bankruptcy Coverage Amount: $150,000.

Insurance Policy: With respect to any Mortgage Loan included in the Trust Fund, any insurance policy, including all riders and endorsements thereto in effect, including any replacement policy or policies for any Insurance Policies.

Insurance Proceeds: Proceeds paid by an insurer pursuant to any Insurance Policy, in each case other than any amount included in such Insurance Proceeds (a) in respect of Insured Expenses, (b) that is applied to the restoration of the related Mortgaged Property, or (c) that is released to the Mortgagor in accordance with the Master Servicer’s normal servicing procedures.

Insured Expenses: Expenses covered by an Insurance Policy or any other insurance policy with respect to the Mortgage Loans.

Insured Retail Certificates: Not applicable.

Interest Accrual Period: With respect to each Class of Delay Certificates and any Distribution Date, the calendar month prior to the month of such Distribution Date. With respect to any Non-Delay Certificates and any Distribution Date, the one month period commencing on the 25th day of the month preceding the month in which such Distribution Date occurs and ending on the 24th day of the month in which such Distribution Date occurs.

Interest Determination Date: Not applicable.

Item 1119 Party: The Depositor, the Seller, the Master Servicer, the Trustee, any Subservicer, any originator identified in the Prospectus Supplement and any other material transaction party, as identified in Exhibit P hereto, as updated pursuant to Section 10.4.

Latest Possible Maturity Date: As to each Class of Subordinated Certificates, each Class of Senior Certificates in Pool I and Pool II and each Lower REMIC Interest and each Middle REMIC Interest, the Distribution Date following the third anniversary of the scheduled maturity date of the Mortgage Loan in Pool I or Pool II having the latest scheduled maturity date as of the Cut-off Date. As to each Class of Senior Certificates in Pool III, the Distribution Date following the third anniversary of the scheduled maturity date of the Mortgage Loan in Pool III having the latest scheduled maturity date as of the Cut-off Date.

Lender PMI Mortgage Loan: Not applicable.

LIBOR: Not applicable.

LIBOR Certificates: Not applicable.

Limited Exchange Act Reporting Obligations: The obligations of the Master Servicer under Section 3.16(b), Section 8.7 and Section 8.9 with respect to notice and information to be provided to the Depositor and Article X (except Section 10.7(a)(i) and (ii)).

Liquidated Mortgage Loan: With respect to any Distribution Date, a defaulted Mortgage Loan (including any REO Property) which was liquidated in the calendar month preceding the month of such Distribution Date and as to which the Master Servicer has determined (in accordance with this Agreement) that it has received all amounts it expects to receive in connection with the liquidation of such Mortgage Loan, including the final disposition of an REO Property.

Liquidation Proceeds: All cash amounts, other than Insurance Proceeds and Unanticipated Recoveries, received in connection with the partial or complete liquidation of defaulted Mortgage Loans, whether through trustee’s sale, foreclosure sale or otherwise or amounts received in connection with any condemnation or partial release of a Mortgaged Property and any other proceeds received in connection with an REO Property, less the sum of related unreimbursed Master Servicing Fees, Servicing Advances and Advances.

Loan-to-Value Ratio: With respect to any Mortgage Loan and as to any date of determination, the fraction (expressed as a percentage) the numerator of which is the principal balance of the related Mortgage Loan at such date of determination and the denominator of which is the Appraised Value of the related Mortgaged Property.

Loss Allocation Limitation: As defined in Section 4.4(g).

Lost Mortgage Note: Any Mortgage Note the original of which was permanently lost or destroyed and has not been replaced.

Lower REMIC: The segregated pool of assets consisting of the Trust Fund but excluding, the Middle REMIC Interests, the Lower REMIC Interests, the RL Interest, the RM Interest and the RU Interest.

Lower REMIC Interests: The REMIC regular interests, within the meaning of the REMIC Provisions, issued by the Lower REMIC as set forth in Section 2.7.

Maintenance: With respect to any Cooperative Unit, the rent paid by the Mortgagor to the Cooperative Corporation pursuant to the Proprietary Lease.

Majority in Interest: As to any Class of Regular Certificates, the Holders of Certificates of such Class evidencing, in the aggregate, at least 51% of the Percentage Interests evidenced by all Certificates of such Class.

Master Servicer: First Horizon Home Loan Corporation, a Kansas corporation, and its successors and assigns, in its capacity as master servicer hereunder.

Master Servicer Advance Date: As to any Distribution Date, 1:30 p.m. Central time on the Business Day immediately preceding such Distribution Date.

Master Servicing Fee: As to each Mortgage Loan and any Distribution Date, an amount payable out of each full payment of interest received on such Mortgage Loan and equal to one-twelfth of the Master Servicing Fee Rate multiplied by the Stated Principal Balance of such Mortgage Loan as of the Due Date in the month of such Distribution Date (prior to giving effect to any Scheduled Payments due on such Mortgage Loan on such Due Date), subject to reduction as provided in Section 3.14.

Master Servicing Fee Rate: A per annum rate equal to 0.244%.

MERS: Mortgage Electronic Registration Systems, Inc., a corporation organized and existing under the laws of the State of Delaware, or any successor thereto.

MERS Mortgage Loan: Any Mortgage Loan registered with MERS on the MERS System.

MERS® System: The system of recording transfers of mortgages electronically maintained by MERS.

Middle REMIC: The segregated pool of assets consisting of the Lower REMIC Interests.

Middle REMIC Interests: The REMIC regular interests, within the meaning of the REMIC Provisions, issued by the Middle REMIC as set forth in Section 2.7.

MIN: The Mortgage Identification Number for any MERS Mortgage Loan.

MLPA: The Mortgage Loan Purchase Agreement dated as of September 29, 2006, by and between First Horizon Home Loan Corporation, as seller, and First Horizon Asset Securities Inc., as purchaser, as related to the transfer, sale and conveyance of the Mortgage Loans.

MOM Loan: Any Mortgage Loan as to which MERS is acting as mortgagee, solely as nominee for the originator of such Mortgage Loan and its successors and assigns.

Monthly Statement: The statement delivered to the Certificateholders pursuant to Section 4.6.

Moody’s: Moody’s Investors Service, Inc., and its successors and/or assigns. If Moody’s is designated as a Rating Agency in the Preliminary Statement, for purposes of Section 11.5(b) the address for notices to Moody’s shall be Moody’s Investors Service, Inc., 99 Church Street, New York, New York 10007, Attention: Residential Pass-Through Monitoring, or such other address as Moody’s may hereafter furnish to the Depositor or the Master Servicer.

Mortgage: The mortgage, deed of trust or other instrument creating a first lien on an estate in fee simple or leasehold interest in real property securing a Mortgage Note.

Mortgage File: The mortgage documents listed in Section 2.1(b) hereof pertaining to a particular Mortgage Loan and any additional documents delivered to the Trustee to be added to the Mortgage File pursuant to this Agreement.

Mortgage Loan Schedule: The list of Mortgage Loans (as from time to time amended by the Master Servicer to reflect the addition of Substitute Mortgage Loans and the deletion of Deleted Mortgage Loans pursuant to the provisions of this Agreement) transferred to the Trustee as part of the Trust Fund and from time to time subject to this Agreement, attached hereto as Schedule I, setting forth the following information with respect to each Mortgage Loan:

(1)   the loan number;

(2)   the Mortgagor’s name and the street address of the Mortgaged Property, including the zip code;

(3)   the maturity date;

(4)   the original principal balance;

(5)   the Cut-off Date Principal Balance;

(6)   the first payment date of the Mortgage Loan;

(7)   the Scheduled Payment in effect as of the Cut-off Date;

(8)   the Loan-to-Value Ratio at origination;

(9)   a code indicating whether the residential dwelling at the time of origination was represented to be owner-occupied;

(10)   a code indicating whether the residential dwelling is either (a) a detached single family dwelling (b) a dwelling in a de minimis PUD, (c) a condominium unit or PUD (other than a de minimis PUD), (d) a two-to-four unit residential property or (e) a Cooperative Unit;

(11)   the Mortgage Rate;

(12)   the purpose for the Mortgage Loan;

(13)   the type of documentation program pursuant to which the Mortgage Loan was originated;

(14)   the Master Servicing Fee for the Mortgage Loan; and

(15)   a code indicating whether the Mortgage Loan is a MERS Mortgage Loan.

Such schedule shall also set forth the total of the amounts described under (4) and (5) above for all of the Mortgage Loans.

Mortgage Loans: Such of the mortgage loans transferred and assigned to the Trustee pursuant to the provisions hereof as from time to time are held as a part of the Trust Fund (including any REO Property), the mortgage loans so held being identified in the Mortgage Loan Schedule, notwithstanding foreclosure or other acquisition of title of the related Mortgaged Property.

Mortgage Note: The original executed note or other evidence of indebtedness evidencing the indebtedness of a Mortgagor under a Mortgage Loan.

Mortgage Pool: Any one of Pool I, Pool II or Pool III.

Mortgage Rate: The annual rate of interest borne by a Mortgage Note from time to time, net of any insurance premium charged by the mortgagee to obtain or maintain any Primary Insurance Policy.

Mortgaged Property: The underlying property securing a Mortgage Loan, which, with respect to a Cooperative Loan, is the related Coop Shares and Proprietary Lease.

Mortgagor: The obligor(s) on a Mortgage Note.

National Cost of Funds Index: The National Monthly Median Cost of Funds Ratio to SAIF-Insured Institutions published by the Office of Thrift Supervision.

Net Interest Shortfall: For any Distribution Date and each Mortgage Pool, the sum of (a) the amount of interest which would otherwise have been received for any Mortgage Loan in such Mortgage Pool that was the subject of (x) a Relief Act Reduction or (y) a Special Hazard Loss, Fraud Loss, or Deficient Valuation, after the exhaustion of the respective amounts of coverage for those types of losses provided by the Subordinated Certificates; and (b) any Net Prepayment Interest Shortfalls in respect of such Mortgage Pool.

Net Prepayment Interest Shortfalls: As to any Distribution Date and each Mortgage Pool, the amount by which the aggregate of Prepayment Interest Shortfalls in respect of the Mortgage Loans in such Mortgage Pool during the related Prepayment Period exceeds an amount equal to the Compensating Interest paid in respect of such Mortgage Loans, if any, for such Distribution Date.

Non-Delay Certificates: As specified in the Preliminary Statement.

Non-Excess Loss: Any Realized Loss other than an Excess Loss.

Nonrecoverable Advance: Any portion of an Advance previously made or proposed to be made by the Master Servicer that, in the good faith judgment of the Master Servicer, will not be ultimately recoverable by the Master Servicer from the related Mortgagor, related Liquidation Proceeds or otherwise.

Notice of Final Distribution: The notice to be provided pursuant to Section 9.2 to the effect that final distribution on any of the Certificates shall be made only upon presentation and surrender thereof.

Notional Amount: As specified in the Preliminary Statement.

Notional Amount Component: Not applicable.

Notional Amount Certificates: As specified in the Preliminary Statement.

Offered Certificates: As specified in the Preliminary Statement.

Officer’s Certificate: A Certificate (i) signed by the Chairman of the Board, the Vice Chairman of the Board, the President, a Managing Director, a Vice President (however denominated), an Assistant Vice President, the Treasurer, the Secretary, or one of the Assistant Treasurers or Assistant Secretaries of the Depositor or the Master Servicer, or (ii), if provided for in this Agreement, signed by a Servicing Officer, as the case may be, and delivered to the Depositor and the Trustee, as the case may be, as required by this Agreement.

Opinion of Counsel: A written opinion of counsel, who may be counsel for the Depositor or the Master Servicer, including, in-house counsel, reasonably acceptable to the Trustee; provided, however, that with respect to the interpretation or application of the REMIC Provisions, such counsel must (i) in fact be independent of the Depositor and the Master Servicer, (ii) not have any direct financial interest in the Depositor or the Master Servicer or in any affiliate of either, and (iii) not be connected with the Depositor or the Master Servicer as an officer, employee, promoter, underwriter, trustee, partner, director or person performing similar functions.

Optional Termination: The termination of the trust created hereunder in connection with the purchase of the Mortgage Loans pursuant to Section 9.1(a) hereof.

Original Subordinated Principal Balance: The aggregate Class Certificate Balance of the Subordinated Certificates as of the Closing Date.

Original Mortgage Loan: The Mortgage Loan refinanced in connection with the origination of a Refinancing Mortgage Loan.

OTS: The Office of Thrift Supervision.

Outside Reference Date: Not applicable.

Outstanding: With respect to the Certificates as of any date of determination, all Certificates theretofore executed and authenticated under this Agreement except:

(i)   Certificates theretofore canceled by the Trustee or delivered to the Trustee for cancellation; and

(ii)   Certificates in exchange for which or in lieu of which other Certificates have been executed and delivered by the Trustee pursuant to this Agreement.

Outstanding Mortgage Loan: As of any Due Date, a Mortgage Loan with a Stated Principal Balance greater than zero which was not the subject of a Principal Prepayment in Full prior to such Due Date and which did not become a Liquidated Mortgage Loan prior to such Due Date.

Ownership Interest: As to any Residual Certificate, any ownership interest in such Certificate including any interest in such Certificate as the Holder thereof and any other interest therein, whether direct or indirect, legal or beneficial.

Pass-Through Rate: For any interest bearing Class of Certificates, the per annum rate set forth or calculated in the manner described in the Preliminary Statement.

Percentage Interest: As to any Certificate, the percentage interest evidenced thereby in distributions required to be made on the related Class, such percentage interest being set forth on the face thereof or equal to the percentage obtained by dividing the Denomination of such Certificate by the aggregate of the Denominations of all Certificates of the same Class.

Performance Certification: As defined in Section 10.5.

Permitted Investments: At any time, any one or more of the following obligations and securities:

(i)   obligations of the United States or any agency thereof, provided such obligations are backed by the full faith and credit of the United States;

(ii)   general obligations of or obligations guaranteed by any state of the United States or the District of Columbia receiving the highest long-term debt rating of each Rating Agency;

(iii)   commercial or finance company paper which is then receiving the highest commercial or finance company paper rating of each Rating Agency;

(iv)   certificates of deposit, demand or time deposits, or bankers’ acceptances issued by any depository institution or trust company incorporated under the laws of the United States or of any state thereof and subject to supervision and examination by federal and/or state banking authorities, provided that the commercial paper and/or long term unsecured debt obligations of such depository institution or trust company (or in the case of the principal depository institution in a holding company system, the commercial paper or long-term unsecured debt obligations of such holding company, but only if Moody’s is not a Rating Agency) are then rated one of the two highest long-term and/or the highest short-term ratings of each Rating Agency for such securities;

(v)   demand or time deposits or certificates of deposit issued by any bank or trust company or savings institution to the extent that such deposits are fully insured by the FDIC and receiving the highest short-term debt rating of each Rating Agency;

(vi)   guaranteed reinvestment agreements issued by any bank, insurance company or other corporation and receiving the highest short-term debt rating of each Rating Agency and containing, at the time of the issuance of such agreements, such terms and conditions as will not result in the downgrading or withdrawal of the rating then assigned to the Certificates by either Rating Agency;

(vii)   repurchase obligations with respect to any security described in clauses (i) and (ii) above, in either case entered into with a depository institution or trust company (acting as principal) described in clause (iv) above;

(viii)   securities (other than stripped bonds, stripped coupons or instruments sold at a purchase price in excess of 115% of the face amount thereof) bearing interest or sold at a discount issued by any corporation incorporated under the laws of the United States or any state thereof which, at the time of such investment, have one of the two highest ratings of each Rating Agency (except if the Rating Agency is Moody’s or S&P, such rating shall be the highest commercial paper rating of Moody’s or S&P, as applicable, for any such securities);

(ix)   units of a taxable money-market portfolio having the highest rating assigned by each Rating Agency (except if Fitch is a Rating Agency and has not rated the portfolio, the highest rating assigned by Moody’s) and restricted to obligations issued or guaranteed by the United States of America or entities whose obligations are backed by the full faith and credit of the United States of America and repurchase agreements collateralized by such obligations; and

(x)   such other investments bearing interest or sold at a discount acceptable to each Rating Agency as will not result in the downgrading or withdrawal of the rating then assigned to the Certificates by either Rating Agency, as evidenced by a signed writing delivered by each Rating Agency;

Permitted Transferee: Any person other than (i) the United States, any State or political subdivision thereof, or any agency or instrumentality of any of the foregoing, (ii) a foreign government, International Organization or any agency or instrumentality of either of the foregoing, (iii) an organization (except certain farmers’ cooperatives described in section 521 of the Code) which is exempt from tax imposed by Chapter 1 of the Code (including the tax imposed by section 511 of the Code on unrelated business taxable income) on any excess inclusions (as defined in section 860E(c)(l) of the Code) with respect to any Residual Certificate, (iv) rural electric and telephone cooperatives described in section 1381(a)(2)(C) of the Code, (v) an “electing large partnership” as defined in section 775 of the Code, (vi) a Person that is not (a) a citizen or resident of the United States, (b) a corporation, partnership, or other entity created or organized in or under the laws of the United States, any state thereof or the District of Columbia, (c) an estate whose income from sources without the United States is includible in gross income for United States federal income tax purposes regardless of its connection with the conduct of a trade or business within the United States or (d) a trust if a court within the United States is able to exercise primary supervision over the administration of the trust and one or more United States persons have the authority to control all substantial decisions of the trust, unless such Person has furnished the transferor and the Trustee with a duly completed Internal Revenue Service Form W-8ECI or any applicable successor form, and (vii) any other Person so designated by the Depositor based upon an Opinion of Counsel that the Transfer of an Ownership Interest in a Residual Certificate to such Person may cause any REMIC created hereunder to fail to qualify as a REMIC at any time that the Certificates are outstanding; provided, however, that if a person is classified as a partnership under the Code, such person shall only be a Permitted Transferee if all of its beneficial owners are described in subclauses (a), (b), (c) or (d) of clause (vi) and the governing documents of such person prohibits a transfer of any interest in such person to any person described in clause (vi). The terms “United States,” “State” and “International Organization” shall have the meanings set forth in section 7701 of the Code or successor provisions. A corporation will not be treated as an instrumentality of the United States or of any State or political subdivision thereof for these purposes if all of its activities are subject to tax and, with the exception of the Federal Home Loan Mortgage Corporation, a majority of its board of directors is not selected by such government unit.

Person: Any individual, corporation, partnership, joint venture, association, joint-stock company, trust, unincorporated organization or government, or any agency or political subdivision thereof.

Physical Certificate: As specified in the Preliminary Statement.

Plan: An employee benefit plan or other retirement arrangement which is subject to Section 406 of ERISA and/or Section 4975 of the Code or any entity whose underlying assets include such plan’s or arrangement’s assets by reason of their investment in the entity.

Planned Balance: Not applicable.

Planned Principal Classes: Not applicable.

Pool I: The aggregate of the Mortgage Loans identified on the Mortgage Loan Schedule as being included in Pool I.

Pool II: The aggregate of the Mortgage Loans identified on the Mortgage Loan Schedule as being included in Pool II.

Pool III: The aggregate of the Mortgage Loans identified on the Mortgage Loan Schedule as being included in Pool III.

Pool Principal Balance: For a Mortgage Pool, with respect to any Distribution Date, the aggregate of the Stated Principal Balances of the Mortgage Loans in such Mortgage Pool which were Outstanding Mortgage Loans on the Due Date in the month preceding the month of such Distribution Date, and for the first Distribution Date, as of the Closing Date, less any Principal Prepayments received on or after such Due Date and distributed to Certificateholders on the prior Distribution Date.

Prepayment Interest Excess: As to any Principal Prepayment received by the Master Servicer from the first day through the fifteenth day of any calendar month (other than the calendar month in which the Cut-off Date occurs), all amounts paid by the related Mortgagor in respect of interest on such Principal Prepayment. All Prepayment Interest Excess shall be paid to the Master Servicer as additional master servicing compensation.

Prepayment Interest Shortfall: As to any Distribution Date, Mortgage Loan and Principal Prepayment received (a) during the period from the sixteenth day of the month preceding the month of such Distribution Date (or, in the case of the first Distribution Date, from the Cut-off Date) through the last day of such month, in the case of a Principal Prepayment in Full, or (b) during the month preceding the month of such Distribution Date, in the case of a partial Principal Prepayment, the amount, if any, by which one month’s interest at the related Adjusted Mortgage Rate on such Principal Prepayment exceeds the amount of interest actually paid by the Mortgagor in connection with such Principal Prepayment.

Prepayment Period: (a) With respect to any Principal Prepayments in Full and any Distribution Date, the period from the sixteenth day of the month preceding the month of such Distribution Date (or, in the case of the first Distribution Date, from the Cut-off Date) through the fifteenth day of the month of such Distribution Date, and (b) with respect to any other Principal Prepayments and any Distribution Date, the month preceding the month of such Distribution Date.

Primary Insurance Policy: Each policy of primary mortgage guaranty insurance or any replacement policy therefor with respect to any Mortgage Loan.

Principal Balance Schedules: Not applicable.

Principal Prepayment: Any payment of principal by a Mortgagor on a Mortgage Loan that is received in advance of its scheduled Due Date and is not accompanied by an amount representing scheduled interest due on any date or dates in any month or months subsequent to the month of prepayment. Partial Principal Prepayments shall be applied by the Master Servicer in accordance with the terms of the related Mortgage Note.

Principal Prepayment in Full: Any Principal Prepayment made by a Mortgagor of the entire principal balance of a Mortgage Loan.

Private Certificate: As specified in the Preliminary Statement.

Proprietary Lease: With respect to any Cooperative Unit, a lease or occupancy agreement between a Cooperative Corporation and a holder of related Coop Shares.

Prospectus: The Prospectus dated April 20, 2006 generally relating to mortgage pass-through certificates to be sold by the Depositor.

Prospectus Supplement: The Prospectus Supplement, dated September 26, 2006, relating to the Offered Certificates.

PUD: Planned Unit Development.

Purchase Price: With respect to any Mortgage Loan required to be purchased by the Seller pursuant to Section 2.2 or 2.3 hereof or purchased at the option of the Master Servicer pursuant to Section 3.11, an amount equal to the sum of (i) 100% of the unpaid principal balance of the Mortgage Loan on the date of such purchase, (ii) accrued interest thereon at the applicable Mortgage Rate (or at the applicable Adjusted Mortgage Rate if the purchaser is the Master Servicer) from the date through which interest was last paid by the Mortgagor to the Due Date in the month in which the Purchase Price is to be distributed to Certificateholders, and (iii) any costs and damages incurred by the Trust in connection with the noncompliance of such Mortgage Loan with any specifically applicable predatory or abusive lending law.

Qualified Insurer: A mortgage guaranty insurance company duly qualified as such under the laws of the state of its principal place of business and each state having jurisdiction over such insurer in connection with the insurance policy issued by such insurer, duly authorized and licensed in such states to transact a mortgage guaranty insurance business in such states and to write the insurance provided by the insurance policy issued by it, approved as a FNMA-approved mortgage insurer and having a claims paying ability rating of at least “AA” or equivalent rating by a nationally recognized statistical rating organization. Any replacement insurer with respect to a Mortgage Loan must have at least as high a claims paying ability rating as the insurer it replaces had on the Closing Date.

Rating Agency: Each of the Rating Agencies specified in the Preliminary Statement. If any such organization or a successor is no longer in existence, “Rating Agency” shall be such nationally recognized statistical rating organization, or other comparable Person, as is designated by the Depositor, notice of which designation shall be given to the Trustee. References herein to a given rating category of a Rating Agency shall mean such rating category without giving effect to any modifiers.

Realized Loss: With respect to each Liquidated Mortgage Loan, an amount (not less than zero or more than the Stated Principal Balance of the Mortgage Loan) as of the date of such liquidation, equal to (i) the Stated Principal Balance of the Liquidated Mortgage Loan as of the date of such liquidation, plus (ii) interest at the Adjusted Net Mortgage Rate from the Due Date as to which interest was last paid or advanced (and not reimbursed) to Certificateholders up to the Due Date in the month in which Liquidation Proceeds are required to be distributed on the Stated Principal Balance of such Liquidated Mortgage Loan from time to time, minus (iii) any Liquidation Proceeds, Insurance Proceeds and/or Unanticipated Recoveries received during the month in which such liquidation occurred (or during the calendar month preceding the related Distribution Date, as applicable), to the extent applied as recoveries of interest at the Adjusted Net Mortgage Rate and to principal of the Liquidated Mortgage Loan. With respect to each Mortgage Loan which has become the subject of a Deficient Valuation, if the principal amount due under the related Mortgage Note has been reduced, the difference between the principal balance of the Mortgage Loan outstanding immediately prior to such Deficient Valuation and the principal balance of the Mortgage Loan as reduced by the Deficient Valuation.

Recognition Agreement: With respect to any Cooperative Loan, an agreement between the Cooperative Corporation and the originator of such Mortgage Loan which establishes the rights of such originator in the Cooperative Property.

Record Date: With respect to any Distribution Date, the close of business on the last Business Day of the month preceding the month in which such Distribution Date occurs.

Reference Bank: Not applicable.

Refinancing Mortgage Loan: Any Mortgage Loan originated in connection with the refinancing of an existing mortgage loan.

Regular Certificates: As specified in the Preliminary Statement.

Regulation AB: Subpart 229.1100 - Asset Backed Securities (Regulation AB), 17 C.F.R. §§229.1100-229.1123, as such may be amended from time to time, and subject to such clarification and interpretation as have been provided by the SEC in the adopting release (Asset-Backed Securities, Securities Act Release No. 33-8518, 70 Fed. Reg. 1,506, 1,531 (Jan. 7, 2005)) or by the staff of the SEC, or as may be provided by the SEC or its staff from time to time.

Relief Act: The Servicemembers Civil Relief Act, or any similar state or local legislation or regulations.

Relief Act Reductions: With respect to any Distribution Date and any Mortgage Loan as to which there has been a reduction in the amount of interest collectible thereon for the most recently ended calendar month as a result of the application of the Relief Act, the amount, if any, by which interest collectible on such Mortgage Loan for the most recently ended calendar month is less than interest accrued thereon for such month pursuant to the Mortgage Note.

REMIC: A “real estate mortgage investment conduit” within the meaning of section 860D of the Code.

REMIC Change of Law: Any proposed, temporary or final regulation, revenue ruling, revenue procedure or other official announcement or interpretation relating to REMICs and the REMIC Provisions issued after the Closing Date.

REMIC Pool: Either of the Lower REMIC, Middle REMIC or Upper REMIC.

REMIC Provisions: Provisions of the federal income tax law relating to real estate mortgage investment conduits, which appear at sections 860A through 860G of Subchapter M of Chapter 1 of the Code, and related provisions, and regulations promulgated thereunder, as the foregoing may be in effect from time to time as well as provisions of applicable state laws.

REO Property: A Mortgaged Property acquired by the Trust Fund through foreclosure or deed-in-lieu of foreclosure in connection with a defaulted Mortgage Loan.

Reportable Event: Any event required to be reported on Form 8-K, and in any event, the following:

(a)   entry into a definitive agreement related to the Trust Fund, the Certificates or the Mortgage Loans, or an amendment to a Transaction Document, even if the Depositor is not a party to such agreement (e.g., a servicing agreement with a servicer contemplated by Item 1108(a)(3) of Regulation AB);

(b)   termination of this Agreement or any other document entered into in connection with the Trust Fund, the Certificates or the Mortgage Loans (other than by expiration of the applicable agreement on its stated termination date or as a result of all parties completing their obligations under such agreement), even if the Depositor is not a party to such agreement (e.g., a servicing agreement with a servicer contemplated by Item 1108(a)(3) of Regulation AB);

(c)   with respect to the Master Servicer only, if the Master Servicer becomes aware of any bankruptcy or receivership with respect to First Horizon, the Depositor, the Master Servicer, any Subservicer, the Trustee, the Co-Trustee, any enhancement or support provider contemplated by Items 1114(b) or 1115 of Regulation AB, or any other material party contemplated by Item 1101(d)(1) of Regulation AB;

(d)   with respect to the Trustee, the Master Servicer and the Depositor only, the occurrence of an early amortization, performance trigger or other event, including an Event of Default under this Agreement;

(e)   the resignation, removal, replacement, substitution of the Trustee, the Master Servicer, any Subservicer, the Trustee or any Co-Trustee;

(f)   with respect to the Master Servicer only, if the Master Servicer becomes aware that (i) any material enhancement or support specified in Item 1114(a)(1) through (3) of Regulation AB or Item 1115 of Regulation AB that was previously applicable regarding one or more classes of the Certificates has terminated other than by expiration of the contract on its stated termination date or as a result of all parties completing their obligations under such agreement; (ii) any material enhancement specified in Item 1114(a)(1) through (3) of Regulation AB or Item 1115 of Regulation AB has been added with respect to one or more classes of the Certificates; or (iii) any existing material enhancement or support specified in Item 1114(a)(1) through (3) of Regulation AB or Item 1115 of Regulation AB with respect to one or more classes of the Certificates has been materially amended or modified; and

(g)   with respect to the Trustee, the Master Servicer and the Depositor only, a required distribution to Holders of the Certificates is not made as of the required Distribution Date under this Agreement.

Reporting Subcontractor: With respect to the Master Servicer or the Trustee, any Subcontractor determined by such Person pursuant to Section 10.8(b) to be materially “participating in the servicing function” within the meaning of Item 1122 of Regulation AB. References to a Reporting Subcontractor shall refer only to the Subcontractor of such Person and shall not refer to Subcontractors generally.

Request for Release: The Request for Release submitted by the Master Servicer to the Trustee, substantially in the form of Exhibits L and M, as appropriate.

Required Insurance Policy: With respect to any Mortgage Loan, any insurance policy that is required to be maintained from time to time under this Agreement.

Required Recordation States: The states of Florida, Maryland and Mississippi.

Residual Certificates: As specified in the Preliminary Statement.

Responsible Officer: When used with respect to the Trustee, any Vice President, any Assistant Vice President, the Secretary, any Assistant Secretary, any Trust Officer or any other officer of the Trustee customarily performing functions similar to those performed by any of the above designated officers and having direct responsibility for the administration of this Agreement and also to whom, with respect to a particular matter, such matter is referred because of such officer’s knowledge of and familiarity with the particular subject.

RL Interest: The REMIC residual interest, within the meaning of the REMIC Provisions, issued by the Lower REMIC, which shall be represented by the Class I-A-R Certificate.

RM Interest: The REMIC residual interest, within the meaning of the REMIC Provisions, issued by the Middle REMIC, which shall be represented by the Class I-A-R Certificate.

RU Interest: The REMIC residual interest, within the meaning of the REMIC Provisions, issued by the Upper REMIC, which shall be represented by the Class I-A-R Certificate.

Sarbanes-Oxley Certification: As defined in Section 10.5.

Scheduled Balances: Not applicable.

Scheduled Certificates: Not applicable.

Scheduled Payment: The scheduled monthly payment on a Mortgage Loan due on any Due Date allocable to principal and/or interest on such Mortgage Loan which, unless otherwise specified herein, shall give effect to any related Debt Service Reduction and any Deficient Valuation that affects the amount of the monthly payment due on such Mortgage Loan.

Scheduled Principal Classes: Not applicable.

SEC: The U.S. Securities and Exchange Commission.

Securities Act: The Securities Act of 1933, as amended.

Security Agreement: The security agreement with respect to a Cooperative Loan.

Seller: First Horizon Home Loan Corporation, a Kansas corporation, and its successors and assigns, in its capacity as seller of the Mortgage Loans pursuant to the MLPA.

Senior Certificates: As specified in the Preliminary Statement.

Senior Final Distribution Date: For each Certificate Group, the Distribution Date on which the Class Certificate Balance of each Class of related Senior Certificates has been reduced to zero.

Senior Mezzanine Certificates: As specified in the Preliminary Statement.

Senior Optimal Principal Amount: As to a Mortgage Pool and with respect to each Distribution Date, an amount equal to the sum of:

(1)   the related Senior Percentage of all Scheduled Payments of principal due on each Mortgage Loan in such Mortgage Pool on the first day of the month in which the Distribution Date occurs, as specified in the amortization schedule at the time applicable thereto after adjustment for previous principal prepayments and the principal portion of Debt Service Reductions after the Bankruptcy Loss Coverage Amount has been reduced to zero, but before any adjustment to such amortization schedule by reason of any other bankruptcy or similar proceeding or any moratorium or similar waiver or grace period;

(2)   the related Senior Prepayment Percentage of the Stated Principal Balance of each Mortgage Loan in such Mortgage Pool which was the subject of a Principal Prepayment in Full received by the Master Servicer during the applicable Prepayment Period;

(3)   the related Senior Prepayment Percentage of the sum of (a) all partial Principal Prepayments in respect of each Mortgage Loan in such Mortgage Pool received during the applicable Prepayment Period and (b) all Unanticipated Recoveries received in respect of each Mortgage Loan in the related Mortgage Pool during the calendar month prior to such Distribution Date;

(4)   the lesser of:

(a) the related Senior Prepayment Percentage of the sum of (x) the Liquidation Proceeds allocable to principal on each Mortgage Loan in such Mortgage Pool which became a Liquidated Mortgage Loan during the related Prepayment Period, other than Mortgage Loans described in clause (y), and (y) the principal balance of each Mortgage Loan in such Mortgage Pool that was purchased by a private mortgage insurer during the related Prepayment Period as an alternative to paying a claim under the related Insurance Policy; and

(b)(i) the related Senior Percentage of the sum of (x) the Stated Principal Balance of each Mortgage Loan in such Mortgage Pool which became a Liquidated Mortgage Loan during the related Prepayment Period, other than Mortgage Loans described in clause (y), and (y) the Stated Principal Balance of each Mortgage Loan in such Mortgage Pool that was purchased by a private mortgage insurer during the related Prepayment Period as an alternative to paying a claim under the related Insurance Policy minus (ii) the related Senior Percentage of the principal portion of Excess Losses (other than Debt Service Reductions) for such Mortgage Pool during the related Prepayment Period; and

(5)   the related Senior Prepayment Percentage of the sum of (a) the Stated Principal Balance of each Mortgage Loan in such Mortgage Pool which was repurchased by the seller in connection with such Distribution Date and (b) the difference, if any, between the Stated Principal Balance of a Mortgage Loan in such Mortgage Pool that has been replaced by the seller with a Substitute Mortgage Loan pursuant to this Agreement in connection with such Distribution Date and the Stated Principal Balance of such Substitute Mortgage Loan.

Senior Percentage: On any Distribution Date for a Certificate Group, the lesser of 100% and the percentage (carried to six places rounded up) obtained by dividing the aggregate Class Certificate Balances of all Classes of Senior Certificates of such Certificate Group immediately preceding such Distribution Date by the Pool Principal Balance of the related Mortgage Pool for the immediately preceding Distribution Date.

Senior Prepayment Percentage: On any Distribution Date occurring during the periods set forth below, and as to each Certificate Group, the Senior Prepayment Percentages, described below:

provided however , (i) if on any Distribution Date, the Aggregate Senior Percentage exceeds such percentage calculated as of the Closing Date, then the Senior Prepayment Percentage for all Certificate Groups for such Distribution Date will equal 100%, (ii) if on any Distribution Date prior to the October 2009 Distribution Date, the Aggregate Subordinated Percentage is greater than or equal to twice such percentage calculated as of the Closing Date, then the Senior Prepayment Percentage for each Certificate Group for such Distribution Date will equal the Senior Percentage for such Certificate Group plus 50% of the Subordinated Percentage for such Certificate Group and (iii) if on or after the October 2009 Distribution Date, the Aggregate Subordinated Percentage is greater than or equal to twice such percentage calculated as of the Closing Date, then the Senior Prepayment Percentage for each Certificate Group for such Distribution Date will equal the Senior Percentage for such Certificate Group.

The reductions in the Senior Prepayment Percentage for each Certificate Group described above will not occur, and the Senior Prepayment Percentage or each Certificate Group for such prior period will be calculated without regard to clause (ii) or (iii) of the paragraph above, unless both of the following step-down conditions are satisfied with respect to each Mortgage Pool as of the last day of the month preceding the Distribution Date:

(a)   20% of the Original Subordinated Principal Balance if such Distribution Date occurs between and including October 2006 and September 2009; and

(b)   30% of the Original Subordinated Principal Balance if such Distribution Date occurs on or after October 2009.

Servicing Advances: All customary, reasonable and necessary “out of pocket” costs and expenses incurred in the performance by the Master Servicer of its servicing obligations, including, but not limited to, the cost of (i) the preservation, restoration and protection of a Mortgaged Property, (ii) any expenses reimbursable to the Master Servicer pursuant to Section 3.11 and any enforcement or judicial proceedings, including foreclosures, (iii) the management and liquidation of any REO Property and (iv) compliance with the obligations under Section 3.9.

Servicing Agreement: The servicing agreement, dated as of November 26, 2002 by and between First Horizon Asset Securities Inc. and its assigns, as owner, and First Tennessee Mortgage Services, Inc., as servicer, as the same may be amended from time to time in accordance with its terms.

Servicing Criteria: The “servicing criteria” set forth in Item 1122(d) of Regulation AB.

Servicing Officer: Any officer of the Master Servicer involved in, or responsible for, the administration and servicing of the Mortgage Loans whose name and facsimile signature appear on a list of servicing officers furnished to the Trustee by the Master Servicer on the Closing Date pursuant to this Agreement, as such list may from time to time be amended.

Servicing Rights Transfer and Subservicing Agreement: The servicing rights transfer and subservicing agreement, dated as of November 26, 2002, by and between First Horizon Home Loan Corporation, as transferor and subservicer, and First Tennessee Mortgage Services, Inc., as transferee and servicer, as the same may be amended from time to time in accordance with its terms.

Special Hazard Coverage Termination Date: The date on which the Special Hazard Loss Coverage Amount is reduced to zero.

Special Hazard Loss: Any Realized Loss suffered by a Mortgaged Property on account of direct physical loss but not including (i) any loss of a type covered by a hazard insurance policy or a flood insurance policy required to be maintained with respect to such Mortgaged Property pursuant to Section 3.9 to the extent of the amount of such loss covered thereby, (ii) any shortfall in Insurance Proceeds for partial damage due to the application of the co-insurance clauses contained in a hazard insurance policy, or (iii) any loss caused by or resulting from:

(1)   normal wear and tear;

(2)   fraud, conversion or other dishonest act on the part of the Trustee, the Master Servicer or any of their agents or employees (without regard to any portion of the loss not covered by any errors and omissions policy);

(3)   errors in design, faulty workmanship or faulty materials, unless the collapse of the property or a part thereof ensues and then only for the ensuing loss;

(4)   nuclear or chemical reaction or nuclear radiation or radioactive or chemical contamination, all whether controlled or uncontrolled, and whether such loss be direct or indirect, proximate or remote or be in whole or in part caused by, contributed to or aggravated by a peril covered by the definition of the term “Special Hazard Loss”;

(5)   hostile or warlike action in time of peace and war, including action in hindering, combating or defending against an actual, impending or expected attack:

(i)   by any government or sovereign power, de jure or de facto, or by any authority maintaining or using military, naval or air forces;

(ii)   by military, naval or air forces; or

(iii)   by an agent of any such government, power, authority or forces;

(6)   any weapon of war employing nuclear fission, fusion or other radioactive force, whether in time of peace or war; or

(7)   insurrection, rebellion, revolution, civil war, usurped power or action taken by governmental authority in hindering, combating or defending against such an occurrence, seizure or destruction under quarantine or customs regulations, confiscation by order of any government or public authority or risks of contraband or illegal transportation or trade.

Special Hazard Loss Coverage Amount: Upon the initial issuance of the Certificates, $3,496,000. As of any Distribution Date, the Special Hazard Loss Coverage Amount shall equal the greater of

(a)   1.00% (or if greater than 1.00%, the highest percentage of Mortgage Loans by principal balance secured by Mortgaged Properties in any single California zip code) of the outstanding principal balance of all the Mortgage Loans as of the related Determination Date; and

(b)   twice the outstanding principal balance of the Mortgage Loan which has the largest outstanding principal balance as of the related Determination Date, less, in each case, the aggregate amount of Special Hazard Losses that would have been previously allocated to the Subordinated Certificates in the absence of the Loss Allocation Limitation. As of any Distribution Date on or after the Cross-over Date, the Special Hazard Loss Coverage Amount will be zero.

Special Hazard Mortgage Loan: A Liquidated Mortgage Loan as to which a Special Hazard Loss has occurred.

S&P: Standard & Poor’s, a division of The McGraw-Hill Companies, Inc., and its successors and/or assigns. If S&P is designated as a Rating Agency in the Preliminary Statement, for purposes of Section 11.5(b) the address for notices to S&P shall be Standard & Poor’s, 55 Water Street, 41st Floor, New York, New York 10041, Attention: Mortgage Surveillance Monitoring, or such other address as S&P may hereafter furnish to the Depositor and the Master Servicer.

Startup Day: The Closing Date.

Stated Principal Balance: As to any Mortgage Loan and Due Date, the unpaid principal balance of such Mortgage Loan as of such Due Date as specified in the amortization schedule at the time relating thereto (before any adjustment to such amortization schedule by reason of any moratorium or similar waiver or grace period) after giving effect to any previous partial Principal Prepayments and Liquidation Proceeds allocable to principal (other than with respect to any Liquidated Mortgage Loan) and to the payment of principal due on such Due Date and irrespective of any delinquency in payment by the related Mortgagor.

Streamlined Documentation Mortgage Loan: Any Mortgage Loan originated pursuant to the Seller’s Streamlined Loan Documentation Program then in effect.

Subcontractor: Any vendor, subcontractor or other Person that is not responsible for the overall servicing (as “servicing” is commonly understood by participants in the mortgage-backed securities market) of Mortgage Loans but performs one or more discrete functions identified in Item 1122(d) of Regulation AB with respect to the Mortgage Loans under the direction or authority of the Master Servicer, a Subservicer or the Trustee, as the case may be.

Subordinated Certificates: As specified in the Preliminary Statement.

Subordinated Certificate Writedown Amount: As of any Distribution Date, the amount by which (a) the sum of the Class Certificate Balances of all of the Certificates, after giving effect to the distribution of principal and the allocation of Realized Losses in reduction of the Class Certificate Balances of all of the Certificates on such Distribution Date, exceeds (b) the aggregate of the Pool Principal Balances of all of the Mortgage Pools on the first day of the month of such Distribution Date, less any Deficient Valuations occurring before the Bankruptcy Loss Coverage Amount has been reduced to zero.

Subordinated Optimal Principal Amount: With respect to each Mortgage Pool and each Distribution Date, an amount equal to the sum of the following (but in no event greater than the aggregate Class Certificate Balances of the Subordinated Certificates immediately prior to such Distribution Date):

(1)   the related Subordinated Percentage of all Scheduled Payments of principal due on each outstanding Mortgage Loan in the related Mortgage Pool on the first day of the month in which the Distribution Date occurs, as specified in the amortization schedule at the time applicable thereto, after adjustment for previous principal prepayments and the principal portion of Debt Service Reductions after the Bankruptcy Loss Coverage Amount has been reduced to zero, but before any adjustment to such amortization schedule by reason of any other bankruptcy or similar proceeding or any moratorium or similar waiver or grace period;

(2)   the related Subordinated Prepayment Percentage of the Stated Principal Balance of each Mortgage Loan in the related Mortgage Pool which was the subject of a Principal Prepayment in Full received by the Master Servicer during the related Prepayment Period;

(3)   the related Subordinated Prepayment Percentage of the sum of (a) all partial Principal Prepayments received in respect of each Mortgage Loan in the related Mortgage Pool during the related Prepayment Period, (b) all Unanticipated Recoveries received in respect of each Mortgage Loan in the related Mortgage Pool during the calendar month prior to such Distribution Date, and (c) on the Senior Final Distribution Date, 100% of any related Senior Optimal Principal Amount remaining undistributed on such date;

(4)   the amount, if any, by which the sum of (a) the net Liquidation Proceeds allocable to principal received during the related Prepayment Period in respect of each Liquidated Mortgage Loan in the related Mortgage Pool, other than Mortgage Loans described in clause (b), and (b) the principal balance of each Mortgage Loan in the related Mortgage Pool that was purchased by a private mortgage insurer during the related Prepayment Period as an alternative to paying a claim under the related Insurance Policy exceeds (c) the sum of the amounts distributable to the Senior Certificateholders under clause (4) of the definition of applicable Senior Optimal Principal Amount on such Distribution Date; and

(5)   the related Subordinated Prepayment Percentage of the sum of (a) the Stated Principal Balance of each Mortgage Loan in the related Mortgage Pool which was repurchased by the seller in connection with such Distribution Date and (b) the difference, if any, between the Stated Principal Balance of each Mortgage Loan in the related Mortgage Pool that has been replaced by the seller with a Substitute Mortgage Loan pursuant to this Agreement in connection with such Distribution Date and the Stated Principal Balance of each such Substitute Mortgage Loan.

Subordinated Percentage: For any Distribution Date and each Certificate Group, 100% minus the related Senior Percentage.

Subordinated Prepayment Percentage: For any Distribution Date, 100% minus the Senior Prepayment Percentage.

Subservicer: Any person to whom the Master Servicer has contracted for the servicing of all or a portion of the Mortgage Loans pursuant to Section 3.2 hereof.

Substitute Mortgage Loan: A Mortgage Loan substituted by the Seller for a Deleted Mortgage Loan which must, on the date of such substitution, as confirmed in a Request for Release, substantially in the form of Exhibit L, (i) have a Stated Principal Balance, after deduction of the principal portion of the Scheduled Payment due in the month of substitution, not in excess of, and not more than 10% less than the Stated Principal Balance of the Deleted Mortgage Loan; (ii) have an Adjusted Net Mortgage Rate not lower than the Adjusted Net Mortgage Rate of the Deleted Mortgage Loan, provided that the Master Servicing Fee for the Substitute Mortgage Loan shall be equal to or greater than that of the Deleted Mortgage Loan; (iii) have a maximum mortgage rate not more than 1% per annum higher or lower than the maximum mortgage rate of the Deleted Mortgage Loan; (iv) have a minimum mortgage rate specified in its related Mortgage Note not more than 1% per annum higher or lower than the minimum mortgage rate of the Deleted Mortgage Loan; (v) have the same mortgage index, reset period and periodic rate as the Deleted Mortgage Loan and a gross margin not more than 1% per annum higher or lower than that of the Deleted Mortgage Loan (vi) be accruing interest at a rate no lower than and not more than 1% per annum higher than, that of the Deleted Mortgage Loan; (iv) have a Loan-to-Value Ratio no higher than that of the Deleted Mortgage Loan; (vii) have a remaining term to maturity no greater than (and not more than one year less than that of) the Deleted Mortgage Loan; (viii) not be a Cooperative Loan unless the Deleted Mortgage Loan was a Cooperative Loan and (ix) comply with each representation and warranty set forth in Section 2.3 hereof.

Substitution Adjustment Amount: The meaning ascribed to such term pursuant to Section 2.3.

Super Senior Certificates: As specified in the Preliminary Statement.

Super Senior Support Certificates: Not applicable.

Support Classes: Not applicable.

Targeted Balances: Not applicable.

Targeted Principal Classes: Not applicable.

Tax Matters Person: The person designated as “tax matters person” in the manner provided under Treasury regulation § 1.860F-4(d) and Treasury regulation § 301.6231(a)(7)-1. Initially, the Tax Matters Person shall be the Trustee.

Tax Matters Person Certificate: The Class I-A-R Certificates with a Denomination of $0.01.

Transfer: Any direct or indirect transfer or sale of any Ownership Interest in a Residual Certificate.

Trust Fund: The corpus of the trust created hereunder consisting of (i) the Mortgage Loans and all interest and principal received on or with respect thereto after the Cut-off Date to the extent not applied in computing the Cut-off Date Principal Balance thereof; (ii) all of the Depositor’s rights as purchaser under the MLPA; (iii) the Certificate Account and the Distribution Account and all amounts deposited therein pursuant to the applicable provisions of this Agreement; (iv) property that secured a Mortgage Loan and has been acquired by foreclosure, deed-in-lieu of foreclosure or otherwise; and (v) all proceeds of the conversion, voluntary or involuntary, of any of the foregoing.

Trustee: The Bank of New York and its successors and, if a successor trustee is appointed hereunder, such successor.

Trustee Fee: As to any Distribution Date and a Mortgage Pool, an amount equal to one-twelfth of the Trustee Fee Rate multiplied by the applicable Pool Principal Balance with respect to such Distribution Date.

Trustee Fee Rate: With respect to each Mortgage Loan, the per annum rate agreed upon in writing on or prior to the Closing Date by the Trustee and the Depositor.

Unanticipated Recovery: As defined in Section 4.2(h).

Undercollateralization Distribution: As defined in Section 4.2(i).

Undercollateralized Group: With respect to any Distribution Date, the Senior Certificates of any Certificate Group as to which the aggregate Certificate Principal Balance thereof, after giving effect to distributions pursuant to Section 4.2(a) on such date, is greater than the Pool Principal Balance of the related Mortgage Pool for such Distribution Date.

Underwriters: As specified in the Preliminary Statement.

Underwriters’ Exemption: An individual administrative exemption granted by the U.S. Department of Labor to the Underwriters providing exceptions from some of the prohibited transaction rules of ERISA with respect to the initial purchase, the holding and the subsequent resale by employee benefit plans in certificates in pass-through trusts having assets and meeting conditions described therein, as amended by Prohibited Transaction Exemption 2000-58 (65 Fed. Reg. 67765, November 13, 2000), as amended, and Prohibited Transaction Exemption 2002-41 (67 Fed. Reg. 54487, August 22, 2002), as amended (or any successor thereto), or any substantially similar administrative exemption granted by the U.S. Department of Labor.

Upper REMIC: The segregated pool of assets consisting of the Middle REMIC Interests.

Voting Rights: The portion of the voting rights of all of the Certificates which is allocated to any Certificate. As of any date of determination, (a) 98.0% of all Voting Rights will be allocated among all Holders of the Certificates, other than the Class I-A-IO and Class I-A-R Certificates, in proportion to their then outstanding Class Certificate Balance; (b) 1.0% of all Voting Rights will be allocated to the Holders of the Class I-A-IO Certificates; and (c) 1.0% of all Voting Rights will be allocated to the Holders of the Class I-A-R Certificates (such Voting Rights to be allocated among the Holders of Certificates of each such Class in accordance with their respective Percentage Interests).

Weighted Average Adjusted Net Mortgage Rate: For a Mortgage Pool, the average of the Adjusted Net Mortgage Rates of the Mortgage Loans in the related Loan Group, weighted on the basis of the Stated Principal Balances thereof.

SECTION 2.1   Conveyance of Mortgage Loans.

(a)   The Depositor, concurrently with the execution and delivery hereof, hereby sells, transfers, assigns, sets over and otherwise conveys to the Trustee for the benefit of the Certificateholders, without recourse, all the right, title and interest of the Depositor in and to the Trust Fund together with (i) the Depositor’s right to (A) require the Seller to cure any breach of a representation or warranty made by the Seller pursuant to the MLPA, or (B) repurchase or substitute for any affected Mortgage Loan in accordance herewith, and (ii) all right, title and interest of the Depositor in, to and under the Servicing Agreement, which right has been assigned to the Depositor pursuant to the MLPA.

(b)   In connection with the transfer and assignment set forth in clause (a) above, the Depositor has delivered or caused to be delivered to the Trustee or the Custodian on its behalf (or, in the case of the Delay Delivery Mortgage Loans, will deliver or cause to be delivered to the Trustee or the Custodian on its behalf within thirty (30) days following the Closing Date) for the benefit of the Certificateholders the following documents or instruments with respect to each Mortgage Loan so assigned:

(i)   (A) the original Mortgage Note endorsed by manual or facsimile signature in blank in the following form: “Pay to the order of    , without recourse,” with all intervening endorsements showing a complete chain of endorsement from the originator to the Person endorsing the Mortgage Note (each such endorsement being sufficient to transfer all right, title and interest of the party so endorsing, as noteholder or assignee thereof, in and to that Mortgage Note); or

(B) with respect to any Lost Mortgage Note, a lost note affidavit from the Seller stating that the original Mortgage Note was lost or destroyed, together with a copy of such Mortgage Note;

(ii)   except as provided below and for each Mortgage Loan that is not a MERS Mortgage Loan, the original recorded Mortgage or a copy of such Mortgage certified by the Seller as being a true and complete copy of the Mortgage, and in the case of each MERS Mortgage Loan, the original recorded Mortgage, noting the presence of the MIN of the Mortgage Loans and either language indicating that the Mortgage Loan is a MOM Loan if the Mortgage Loan is a MOM Loan or if the Mortgage Loan was not a MOM Loan at origination, the original Mortgage and the assignment thereof to MERS, with evidence of recording indicated thereon, or a copy of the Mortgage certified by the Seller as being a true and complete copy of the Mortgage;

(iii)   in the case of a Mortgage Loan that is not a MERS Mortgage Loan, a duly executed assignment of the Mortgage, or a copy of such assignment certified by the Seller as being a true and complete copy of the assignment, in blank (which may be included in a blanket assignment or assignments), together with, except as provided below, all interim recorded assignments, or copies of such interim assignments certified by the Seller as being true and complete copies of the interim assignments, of such Mortgage (each such assignment, when duly and validly completed, to be in recordable form and sufficient to effect the assignment of and transfer to the assignee thereof, under the Mortgage to which the assignment relates); provided that, if the related Mortgage has not been returned from the applicable public recording office, such assignment of the Mortgage may exclude the information to be provided by the recording office;

(iv)   the original or copies of each assumption, modification, written assurance or substitution agreement, if any;

(v)   either the original or duplicate original title policy, or a copy of such title policy certified by the Seller as being a true and complete copy of the title policy (including all riders thereto), with respect to the related Mortgaged Property, if available, provided that the title policy (including all riders thereto) will be delivered as soon as it becomes available, and if the title policy is not available, and to the extent required pursuant to the second paragraph below or otherwise in connection with the rating of the Certificates, a written commitment or interim binder or preliminary report of the title issued by the title insurance or escrow company with respect to the Mortgaged Property, or in lieu thereof, an Alternative Title Product or a copy of such Alternative Title Product certified by the Seller as being a true and complete copy of the Alternative Title Product; and

(vi)   in the case of a Cooperative Loan, the originals of the following documents or instruments:

In the event that in connection with any Mortgage Loan that is not a MERS Mortgage Loan the Depositor cannot deliver (a) the original recorded Mortgage or (b) all interim recorded assignments satisfying the requirements of clause (ii) or (iii) above, respectively, concurrently with the execution and delivery hereof because such document or documents have not been returned from the applicable public recording office, the Depositor shall promptly deliver or cause to be delivered to the Trustee or the Custodian on its behalf such original Mortgage or such interim assignment, as the case may be, with evidence of recording indicated thereon upon receipt thereof from the public recording office, or a copy thereof, certified, if appropriate, by the relevant recording office, but in no event shall any such delivery of the original Mortgage and each such interim assignment or a copy thereof, certified, if appropriate, by the relevant recording office, be made later than one year following the Closing Date; provided, however, in the event the Depositor is unable to deliver or cause to be delivered by such date each Mortgage and each such interim assignment by reason of the fact that any such documents have not been returned by the appropriate recording office, or, in the case of each such interim assignment, because the related Mortgage has not been returned by the appropriate recording office, the Depositor shall deliver or cause to be delivered such documents to the Trustee or the Custodian on its behalf as promptly as possible upon receipt thereof and, in any event, within 720 days following the Closing Date. The Depositor shall forward or cause to be forwarded to the Trustee or the Custodian on its behalf (a) from time to time additional original documents evidencing an assumption or modification of a Mortgage Loan and (b) any other documents required to be delivered by the Depositor or the Master Servicer to the Trustee. In the event that the original Mortgage is not delivered and in connection with the payment in full of the related Mortgage Loan and the public recording office requires the presentation of a “lost instruments affidavit and indemnity” or any equivalent document, because only a copy of the Mortgage can be delivered with the instrument of satisfaction or reconveyance, the Master Servicer shall execute and deliver or cause to be executed and delivered such a document to the public recording office. In the case where a public recording office retains the original recorded Mortgage or in the case where a Mortgage is lost after recordation in a public recording office, the Depositor shall deliver or cause to be delivered to the Trustee or the Custodian on its behalf a copy of such Mortgage certified by such public recording office to be a true and complete copy of the original recorded Mortgage.

In addition, in the event that in connection with any Mortgage Loan the Depositor cannot deliver or cause to be delivered the original or duplicate original lender’s title policy (together with all riders thereto), satisfying the requirements of clause (v) above, concurrently with the execution and delivery hereof because the related Mortgage has not been returned from the applicable public recording office, the Depositor shall promptly deliver or cause to be delivered to the Trustee or the Custodian on its behalf such original or duplicate original lender’s title policy (together with all riders thereto) upon receipt thereof from the applicable title insurer, but in no event shall any such delivery of the original or duplicate original lender’s title policy be made later than one year following the Closing Date; provided, however, in the event the Depositor is unable to deliver or cause to be delivered by such date the original or duplicate original lender’s title policy (together with all riders thereto) because the related Mortgage has not been returned by the appropriate recording office, the Depositor shall deliver or cause to be delivered such documents to the Trustee or the Custodian on its behalf as promptly as possible upon receipt thereof and, in any event, within 720 days following the Closing Date; provided further, however, that the Depositor shall not be required to deliver an original or duplicate lender’s title policy (together with all riders thereto) if the Depositor delivers an Alternative Title Product in lieu thereof. Notwithstanding the preceding, in connection with any Mortgage Loan for which either the original or duplicate original title policy has not been delivered to the Trust, if at any time during the term of this Agreement the parent company of the Seller does not have a long term senior debt rating of A- or higher from S&P and A- or higher from Fitch (if rated by Fitch), then the Depositor shall within 30 days deliver or cause to be delivered to the Trustee or the Custodian on its behalf (if it has not previously done so) a written commitment or interim binder or preliminary report of the title issued by the title insurance or escrow company with respect to the Mortgaged Property.

Subject to the immediately following sentence, as promptly as practicable subsequent to such transfer and assignment, and in any event, within thirty (30) days thereafter, the Master Servicer shall (i) complete each assignment of Mortgage, as follows: “First Horizon Mortgage Pass-Through Certificates, Series 2006-AR3, The Bank of New York, as trustee for the holders of the Certificates”, (ii) cause such assignment to be in proper form for recording in the appropriate public office for real property records and (iii) cause to be delivered for recording in the appropriate public office for real property records the assignments of the Mortgages to the Trustee, except that, with respect to any assignments of Mortgage as to which the Master Servicer has not received the information required to prepare such assignment in recordable form, the Master Servicer’s obligation to do so and to deliver the same for such recording shall be as soon as practicable after receipt of such information and in any event within thirty (30) days after receipt thereof. Notwithstanding the foregoing, the Master Servicer need not cause to be recorded any assignment which relates to a Mortgage Loan in any state other than the Required Recordation States.

In the case of Mortgage Loans that have been prepaid in full as of the Closing Date, the Depositor, in lieu of delivering the above documents to the Trustee or the Custodian on its behalf, will deposit in the Certificate Account the portion of such payment that is required to be deposited in the Certificate Account pursuant to Section 3.8 hereof.

Notwithstanding anything to the contrary in this Agreement, within thirty days after the Closing Date, the Depositor shall either (i) deliver or cause to be delivered to the Trustee or the Custodian on its behalf the Mortgage File as required pursuant to this Section 2.1 for each Delay Delivery Mortgage Loan or (ii) (A) substitute or cause to be substituted a Substitute Mortgage Loan for the Delay Delivery Mortgage Loan or (B) repurchase or cause to be repurchased the Delay Delivery Mortgage Loan, which substitution or repurchase shall be accomplished in the manner and subject to the conditions set forth in Section 2.3 (treating each Delay Delivery Mortgage Loan as a Deleted Mortgage Loan for purposes of such Section 2.3), provided, however, that if the Depositor fails to deliver a Mortgage File for any Delay Delivery Mortgage Loan within the thirty-day period provided in the prior sentence, the Depositor shall use its best reasonable efforts to effect or cause to be effected a substitution, rather than a repurchase of, such Deleted Mortgage Loan and provided further that the cure period provided for in Section 2.2 or in Section 2.3 shall not apply to the initial delivery of the Mortgage File for such Delay Delivery Mortgage Loan, but rather the Depositor shall have five (5) Business Days to cure or cause to be cured such failure to deliver. At the end of such thirty-day period, the Trustee or the Custodian, on its behalf shall send a Delay Delivery Certification for the Delay Delivery Mortgage Loans delivered during such thirty-day period in accordance with the provisions of Section 2.2. Notwithstanding anything to the contrary contained in this Agreement, none of the Mortgage Loans in the Trust Fund is or will be Delay Delivery Mortgage Loans.

SECTION 2.2   Acceptance by Trustee of the Mortgage Loans.

The Trustee or the Custodian, on behalf of the Trustee, acknowledges receipt of the documents identified in the Initial Certification in the form annexed hereto as Exhibit E and declares that it or the Custodian holds and will hold such documents and the other documents delivered to it or the Custodian, as applicable, constituting the Mortgage Files, and that it or the Custodian, as applicable, holds or will hold such other assets as are included in the Trust Fund, in trust for the exclusive use and benefit of all present and future Certificateholders. The Trustee acknowledges that the Custodian will maintain possession of the Mortgage Notes in the State of Texas, unless otherwise permitted by the Rating Agencies.

The Trustee agrees to execute and deliver or to cause the Custodian to execute and deliver on the Closing Date to the Depositor and the Master Servicer an Initial Certification in the form annexed hereto as Exhibit E. Based on its or the Custodian’s review and examination, and only as to the documents identified in such Initial Certification, the Custodian, on behalf of the Trustee, acknowledges that such documents appear regular on their face and relate to such Mortgage Loan. Neither the Trustee nor the Custodian shall be under any duty or obligation to inspect, review or examine said documents, instruments, certificates or other papers to determine that the same are genuine, enforceable or appropriate for the represented purpose or that they have actually been recorded in the real estate records or that they are other than what they purport to be on their face.

On or about the thirtieth (30th) day after the Closing Date, the Trustee shall deliver or shall cause the Custodian to deliver to the Depositor and the Master Servicer a Delay Delivery Certification in the form annexed hereto as Exhibit F, with any applicable exceptions noted thereon. Notwithstanding anything to the contrary contained in this Agreement, none of the Mortgage Loans in the Trust Fund is or will be Delay Delivery Mortgage Loans.

Not later than 90 days after the Closing Date, the Trustee shall deliver or shall cause the Custodian to deliver to the Depositor and the Master Servicer a Subsequent Certification in the form annexed hereto as Exhibit G, with any applicable exceptions noted thereon.

If, in the course of such review, the Trustee or the Custodian, on behalf of the Trustee, finds any document constituting a part of a Mortgage File which does not meet the requirements of Section 2.1, the Trustee shall list or shall cause the Custodian to list such as an exception in the Subsequent Certification; provided, however that neither the Trustee nor the Custodian shall make any determination as to whether (i) any endorsement is sufficient to transfer all right, title and interest of the party so endorsing, as noteholder or assignee thereof, in and to that Mortgage Note or (ii) any assignment is in recordable form or is sufficient to effect the assignment of and transfer to the assignee thereof under the mortgage to which the assignment relates. The Seller shall promptly correct or cure such defect within 90 days from the date it was so notified of such defect and, if the Seller does not correct or cure such defect within such period, the Seller shall either (a) substitute for the related Mortgage Loan a Substitute Mortgage Loan, which substitution shall be accomplished in the manner and subject to the conditions set forth in Section 2.3, or (b) purchase such Mortgage Loan from the Trustee within 90 days from the date the Seller was notified of such defect in writing at the Purchase Price of such Mortgage Loan; provided, however, that in no event shall such substitution or purchase occur more than 540 days from the Closing Date, except that if the substitution or purchase of a Mortgage Loan pursuant to this provision is required by reason of a delay in delivery of any documents by the appropriate recording office, and there is a dispute between either the Master Servicer or the Seller and the Trustee over the location or status of the recorded document, then such substitution or purchase shall occur within 720 days from the Closing Date. The Trustee shall deliver or shall cause the Custodian to deliver written notice to each Rating Agency within 270 days from the Closing Date indicating each Mortgage Loan (a) which has not been returned by the appropriate recording office or (b) as to which there is a dispute as to location or status of such Mortgage Loan. Such notice shall be delivered every 90 days thereafter until the related Mortgage Loan is returned to the Trustee or the Custodian on its behalf. Any such substitution pursuant to (a) above or purchase pursuant to (b) above shall not be effected prior to the delivery to the Trustee of the Opinion of Counsel required by Section 2.5 hereof, if any, and any substitution pursuant to (a) above shall not be effected prior to the additional delivery to the Trustee of a Request for Release substantially in the form of Exhibit L. No substitution is permitted to be made in any calendar month after the Determination Date for such month. The Purchase Price for any such Mortgage Loan shall be deposited by the Seller in the Certificate Account on or prior to the Distribution Account Deposit Date for the Distribution Date in the month following the month of repurchase and, upon receipt of such deposit and certification with respect thereto in the form of Exhibit M hereto (delivery of which to the Custodian will be by electronic data transmission or email), the Trustee shall cause the Custodian to release the related Mortgage File to the Seller and shall execute and deliver at the Seller’s request such instruments of transfer or assignment prepared by the Seller, in each case without recourse, as shall be necessary to vest in the Seller, or a designee, the Trustee’s interest in any Mortgage Loan released pursuant hereto. If pursuant to the foregoing provisions the Seller repurchases a Mortgage Loan that is a MERS Mortgage Loan, the Master Servicer shall either (i) cause MERS to execute and deliver an assignment of the Mortgage in recordable form to transfer the Mortgage from MERS to the Seller and shall cause such Mortgage to be removed from registration on the MERS® System in accordance with MERS’ rules and regulations or (ii) cause MERS to designate on the MERS® System the Seller as the beneficial holder of such Mortgage Loan.

The Trustee shall retain or shall cause the Custodian to retain possession and custody of each Mortgage File in accordance with and subject to the terms and conditions set forth herein. The Master Servicer shall promptly deliver to the Trustee or the Custodian on its behalf, upon the execution or receipt thereof, the originals of such other documents or instruments constituting the Mortgage File as come into the possession of the Master Servicer from time to time.

It is understood and agreed that the obligation of the Seller to substitute for or to purchase any Mortgage Loan which does not meet the requirements of Section 2.1 above shall constitute the sole remedy respecting such defect available to the Trustee, the Depositor and any Certificateholder against the Seller.

The mortgage loans permitted by the terms of this Agreement to be included in the Trust Fund are limited to (i) the Mortgage Loans (which the Depositor acquired pursuant to the MLPA, which contains, among other representations and warranties, a representation and warranty of the Seller that no Mortgage Loan is a “high cost loan” as defined by the specific applicable local, state or federal predatory and abusive lending laws, and (ii) Substitute Mortgage Loans (which, by definition as set forth in this Agreement and referred to in the MLPA, are required to conform to, among other representations and warranties, a representation and warranty of the Seller set forth in the MLPA that no Substitute Mortgage Loan is a “high cost loan” as defined by the specific applicable local, state or federal predatory and abusive lending laws). It is therefore understood and agreed by the parties hereto that it is not intended that any Mortgage Loan be included in the Trust Fund that is a “high cost loan” as defined in the applicable local, state or federal predatory and abusive lending laws.

SECTION 2.3   Representations and Warranties of the Master Servicer; Covenants of the Seller.

With respect to any Substitute Mortgage Loan or Loans, the Seller shall deliver to the Trustee or the Custodian on its behalf for the benefit of the Certificateholders the Mortgage Note, the Mortgage, the related assignment of the Mortgage, and such other documents and agreements as are required by Section 2.1, with the Mortgage Note endorsed and the Mortgage assigned as required by Section 2.1. No substitution is permitted to be made in any calendar month after the Determination Date for such month. Scheduled Payments due with respect to Substitute Mortgage Loans in the month of substitution shall not be part of the Trust Fund and will be retained by the Seller on the next succeeding Distribution Date. For the month of substitution, distributions to Certificateholders will include the monthly payment due on any Deleted Mortgage Loan for such month and thereafter the Seller shall be entitled to retain all amounts received in respect of such Deleted Mortgage Loan. The Master Servicer shall amend the Mortgage Loan Schedule for the benefit of the Certificateholders to reflect the removal of such Deleted Mortgage Loan and the substitution of the Substitute Mortgage Loan or Loans and the Master Servicer shall deliver the amended Mortgage Loan Schedule to the Trustee. Upon such substitution, the Substitute Mortgage Loan or Loans shall be subject to the terms of this Agreement in all respects, and the Seller shall be deemed to have made with respect to such Substitute Mortgage Loan or Loans, as of the date of substitution, the representations and warranties made pursuant to Schedule B to the MLPA with respect to such Mortgage Loan. Upon any such substitution and the deposit to the Certificate Account of the amount required to be deposited therein in connection with such substitution as described in the following paragraph, the Trustee shall, upon the delivery to the Trustee of a Request for Release in the form of Exhibit L, release or shall cause the Custodian to release the Mortgage File held for the benefit of the Certificateholders relating to such Deleted Mortgage Loan to the Seller and shall execute and deliver at the Seller’s direction such instruments of transfer or assignment prepared by the Seller, in each case without recourse, as shall be necessary to vest title in the Seller, or its designee, the Trustee’s interest in any Deleted Mortgage Loan substituted for pursuant to this Section 2.3.

For any month in which the Seller substitutes one or more Substitute Mortgage Loans for one or more Deleted Mortgage Loans, the Master Servicer will determine the amount (if any) by which the aggregate principal balance of all such Substitute Mortgage Loans as of the date of substitution is less than the aggregate Stated Principal Balance of all such Deleted Mortgage Loans (after application of the scheduled principal portion of the monthly payments due in the month of substitution). The amount of such shortage (the “Substitution Adjustment Amount”) plus an amount equal to the aggregate of any unreimbursed Advances with respect to such Deleted Mortgage Loans shall be deposited in the Certificate Account by the Seller on or before the Distribution Account Deposit Date for the Distribution Date in the month succeeding the calendar month during which the related Mortgage Loan became required to be purchased or replaced hereunder.

In the event that the Seller shall have repurchased a Mortgage Loan, the Purchase Price therefor shall be deposited in the Certificate Account pursuant to Section 3.5 on or before the Distribution Account Deposit Date for the Distribution Date in the month following the month during which the Seller became obligated hereunder to repurchase or replace such Mortgage Loan and upon such deposit of the Purchase Price, the delivery of the Opinion of Counsel required by Section 2.5 and receipt of a Request for Release in the form of Exhibit M hereto, the Trustee shall release or shall cause the Custodian to release the related Mortgage File held for the benefit of the Certificateholders to such Person, and the Trustee shall execute and deliver or shall cause the Custodian to execute and deliver at such Person’s direction such instruments of transfer or assignment prepared by such Person, in each case without recourse, as shall be necessary to transfer title from the Trustee. It is understood and agreed that the obligation under this Agreement of the Seller to cure, repurchase or replace any Mortgage Loan as to which a breach has occurred and is continuing shall constitute the sole remedy against the Seller respecting such breach available to Certificateholders, the Depositor or the Trustee on their behalf.

After giving effect to the sale of the Certificates by the Depositor to the Underwriters, and thereafter, so long as any Certificates remain outstanding, the Seller, its affiliates and agents, collectively, shall not beneficially own Certificates the aggregate fair value of which would represent 90% or more of the beneficial interests in the Trust Fund.

The representations and warranties made pursuant to this Section 2.3 shall survive delivery of the respective Mortgage Files to the Trustee or the Custodian for the benefit of the Certificateholders.

SECTION 2.4   Representations and Warranties of the Depositor as to the Mortgage Loans.

The Depositor hereby represents and warrants to the Trustee with respect to each Mortgage Loan as of the date hereof or such other date set forth herein that as of the Closing Date, and following the transfer of the Mortgage Loans to it pursuant to the MLPA and immediately prior to the conveyance of the Mortgage Loans by it to the Trustee pursuant to Section 2.1(a) hereof, the Depositor had good title to the Mortgage Loans and the Mortgage Notes were subject to no offsets, defenses or counterclaims.

It is understood and agreed that the representations and warranties set forth in this Section 2.4 shall survive delivery of the Mortgage Files to the Trustee. Upon discovery by the Depositor or the Trustee of a breach of any of the foregoing representations and warranties set forth in this Section 2.4 (referred to herein as a “breach”), which breach materially and adversely affects the interest of the Certificateholders, the party discovering such breach shall give prompt written notice to the others and to each Rating Agency.

SECTION 2.5   Delivery of Opinion of Counsel in Connection with Substitutions.

(a)   Notwithstanding any contrary provision of this Agreement, no substitution pursuant to Section 2.2 or Section 2.3 shall be made more than 90 days after the Closing Date unless the Depositor delivers to the Trustee an Opinion of Counsel, which Opinion of Counsel shall not be at the expense of either the Trustee or the Trust Fund, addressed to the Trustee, to the effect that such substitution will not (i) result in the imposition of the tax on “prohibited transactions” on the Trust Fund or contributions after the Startup Date, as defined in Sections 860F(a)(2) and 860G(d) of the Code, respectively, or (ii) cause any REMIC created hereunder to fail to qualify as a REMIC at any time that any Certificates are outstanding.

(b)   Upon discovery by the Depositor, the Master Servicer or the Trustee that any Mortgage Loan does not constitute a “qualified mortgage” within the meaning of Section 860G(a)(3) of the Code, the party discovering such fact shall promptly (and in any event within five (5) Business Days of discovery) give written notice thereof to the other parties. In connection therewith, the Trustee shall require the Depositor to cause the Seller, pursuant to the MLPA and at the Seller’s option, to either (i) substitute, if the conditions in Section 2.3(b) with respect to substitutions are satisfied, a Substitute Mortgage Loan for the affected Mortgage Loan, or (ii) repurchase the affected Mortgage Loan within 90 days of such discovery in the same manner as it would a Mortgage Loan for a breach of representation or warranty made pursuant to Section 2.3. The Trustee shall reconvey or shall cause the Custodian to reconvey to the Seller the Mortgage Loan to be released pursuant hereto in the same manner, and on the same terms and conditions, as it would a Mortgage Loan repurchased for breach of a representation or warranty contained in Section 2.3.

SECTION 2.6   Execution and Delivery of Certificates.

The Trustee acknowledges the transfer and assignment to it of the Trust Fund and, concurrently with such transfer and assignment, has executed and delivered to or upon the order of the Depositor, the Certificates in authorized denominations evidencing directly or indirectly the entire ownership of the Trust Fund. The Trustee agrees to hold the Trust Fund and exercise the rights referred to above for the benefit of all present and future Holders of the Certificates and to perform the duties set forth in this Agreement to the best of its ability, to the end that the interests of the Holders of the Certificates may be adequately and effectively protected.

SECTION 2.7   REMIC Matters.

The Preliminary Statement sets forth the “latest possible maturity date” for federal income tax purposes of all REMIC regular interests created hereby.

The assets of the Lower REMIC shall be as set forth in the definition thereof. Each interest identified in the first table below by a designation beginning with “L” shall be a “regular interest” in the Lower REMIC and a Lower REMIC Interest, and the RL Interest shall be the sole class of residual interest in the Lower REMIC. The Lower REMIC Interests shall be uncertificated and shall be held by the Trustee as assets of the Middle REMIC.

The assets of the Middle REMIC shall be as set forth in the definition thereof. Each interest identified in the second table below by a designation beginning with “M” shall be a “regular interest” in the Middle REMIC and a Middle REMIC Interest, and the RM Interest shall be the sole class of residual interest in the Middle REMIC. The Middle REMIC Interests shall be uncertificated and shall be held by the Trustee as assets of the Upper REMIC.

The assets of the Upper REMIC shall be as set forth in the definition thereof. The Regular Certificates shall represent “regular interests” in the Upper REMIC. The RU Interest shall be the sole class of residual interest in the Upper REMIC. The Class I-A-R Certificate shall represent ownership of the RL Interest, RM Interest and RU Interest.

The “Startup Day” for purposes of the REMIC Provisions for each REMIC hereunder shall be the Closing Date. The Tax Matters Person with respect to each REMIC hereunder shall be the Trustee and the Trustee shall hold the Tax Matters Person Certificate. Each REMIC’s taxable year shall be the calendar year and its accounts shall be maintained using the accrual method.

(1)   The Lower REMIC Interest L-I-A-1, Lower REMIC Interest L-I-A-2 and Lower REMIC Interest L-I-A-ZZZ shall be Corresponding Classes to these classes of Middle REMIC Interests: M-I-A-1, M-I-A-2, M-I-A-RU, M-B-1, M-B-2, M-B-3, M-B-4, M-B-5 and M-B-6 (provided that with respect to M-B-1, M-B-2, M-B-3, M-B-4, M-B-5 and M-B-6, such Lower REMIC Interests shall only correspond to the portion supported by Pool I). The Lower REMIC Interest L-II-A-1, Lower REMIC L-II-A-2 and Lower REMIC Interest L-II-A-ZZZ shall be Corresponding Classes to these classes of Middle REMIC Interests: M-II-A-1, M-B-1, M-B-2, M-B-3, M-B-4, M-B-5 and M-B-6 (provided that with respect to M-B-1, M-B-2, M-B-3, M-B-4, M-B-5 and M-B-6, such Lower REMIC Interests shall only correspond to the portion supported by Pool II). The Lower REMIC Interest L-III-A-1, Lower REMIC Interest L-III-A-2 and Lower REMIC Interest L-III-A-ZZZ shall be Corresponding Classes to these classes of Middle REMIC Interests: M-III-A-1, M-B-1, M-B-2, M-B-3, M-B-4, M-B-5 and M-B-6 (provided that with respect to M-B-1, M-B-2, M-B-3, M-B-4, M-B-5 and M-B-6, such Lower REMIC Interests shall only correspond to the portion supported by Pool III).

(2)   The Lower REMIC Interest Rate for the Lower REMIC Interest L-I-A-1, L-I-A-2 and L-I-A-ZZZ will equal the Weighted Average Adjusted Net Mortgage Rate for Pool I.

(3)   The Lower REMIC Interest Rate for the Lower REMIC Interest L-II-A-1, L-II-A-2 and L-II-A-ZZZ will equal the Weighted Average Adjusted Net Mortgage Rate for Pool II.

(4)   The Lower REMIC Interest Rate for the Lower REMIC Interest L-III-A-1, L-III-A-2 and L-III-A-ZZZ will equal the Weighted Average Adjusted Net Mortgage Rate for Pool III.

“L1 Interests” refers to the L-I-A-1 Lower REMIC Interest, the L-II-A-1 Lower REMIC Interests, and the L-III-A-1 Lower REMIC Interest. “L2 Interests” refers to the L-I-A-2 Lower REMIC Interest, L-II-A-2 Lower REMIC Interest, and the L-III-A-2 Lower REMIC Interest. “LZZZ Interests” refers to L-I-A-ZZZ Lower REMIC Interest, L-II-A-ZZZ Lower REMIC Interest, and the L-III-A-ZZZ Lower REMIC Interest. Each L1 Interest shall have a principal balance initially equal to 0.9% of the Group Subordinate Amount of its corresponding Mortgage Pool. Each L2 Interest shall have a principal balance initially equal to 0.1% of the Group Subordinate Amount of its corresponding Mortgage Pool. The initial principal balance of each LZZZ Interest shall equal the excess of the Pool Principal Balance of its corresponding Mortgage Pool over the sum of the initial principal balances of the L1 Interests and L2 Interests corresponding to such Mortgage Pool.

Unless a Cross-over Situation (as defined below) exists, principal and Realized Losses arising with respect to each Mortgage Pool shall be allocated first to cause the L1 and L2 Interests corresponding to such Mortgage Pool to equal 0.9% and 0.1% of the Group Subordinate Amount of such Mortgage Pool as of such Distribution Date (after distributions of principal and allocation of Realized Losses are made) and all excess principal and Realized Losses shall be allocated to the LZZZ Interest corresponding to such Mortgage Pool. A L1, L2 or LZZZ Interest that is allocated principal on any Distribution Date shall receive such principal, and have its principal balance reduced by the amount of such principal, on such Distribution Date. Similarly, a L1, L2 or LZZZ Interest that is allocated a Realized Loss on any Distribution Date shall have its principal balance reduced by the amount of such Realized Loss on such Distribution Date.

A “Cross-over Situation” exists if on any Distribution Date (after taking into account distributions of principal and allocations of Realized Losses on such Distribution Date) the L1 and L2 Interests corresponding to any Mortgage Pool are in the aggregate less than 1% of the Group Subordinate Amount of the corresponding Mortgage Pool. If a Cross-over Situation exists on any Distribution Date, and the weighted average interest rate of the outstanding L1 and L2 Interests is less than the Pass-Through Rate for any Class of Subordinate Certificates for the following Distribution Date, a Principal Reallocation Payment (as defined below) shall be made proportionately to the outstanding L1 Interests prior to any other distributions of principal from each such Mortgage Pool so that the Calculation Rate equals the Pass-Through Rate for each Class of Subordinate Certificates. If a Cross-over Situation exists on any Distribution Date, and the weighted average rate of the outstanding L1 and L2 Interests is greater than the Pass-Through Rate for any Class of Subordinate Certificates for the following Distribution Date, a Principal Reallocation Payment shall be made proportionately to the outstanding L2 Interests prior to any other distributions of principal from each such Mortgage Pool so that the Calculation Rate equals the Pass-Through Rate for each Class of Subordinate Certificates. A “Principal Reallocation Payment” is a distribution of the minimum amount of principal that causes the Calculation Rate (as defined below) with respect to the outstanding L1 and L2 Interests to equal the Pass-Through Rate for each Class of Subordinate Certificates. The “Calculation Rate” shall equal the product of (i) 10 and (ii) the weighted average interest rate of the outstanding L1 and L2 Interests, treating each L1 Interest as capped at zero or reduced by a fixed percentage of 100% of the interest accruing on such class. Principal Reallocation Payments shall be made from principal received on the Mortgage Loans from a Mortgage Pool and shall also consist of a proportionate allocation of Realized Losses from the Mortgage Loans of a Mortgage Pool. For purposes of making Principal Reallocation Payments, to the extent that the principal received during the applicable collection period from the related Mortgage Pool or Mortgage Pools and related Realized Losses are insufficient to make the necessary reduction of principal, then interest shall accrue on the LZZZ Interest (and be added to its principal balance) of the related Mortgage Pool or Mortgage Pools to allow the necessary Principal Reallocation Payment to be made. The Calculation Rate is designed to always equal the Pass-Through Rate of each Class of Subordinated Certificates.

If a Cross-over Situation exists, the aggregate principal balances of the outstanding L1 and L2 Interests of all of the Mortgage Pools shall not be reduced below one percent of the aggregate Pool Principal Balance of all of the Mortgage Pools for the following Distribution Date in excess of the Senior Certificates as of the related Distribution Date (after taking into account distributions of principal and allocations of Realized Losses on such Distribution Date). To the extent this limitation prevents the distribution of principal to the L1 and L2 Interests of a Mortgage Pool and the related LZZZ Interest has already been reduced to zero, such excess principal from such Mortgage Pool shall be paid proportionately to the LZZZ Interests of the Mortgage Pool or Mortgage Pools whose aggregate L1 and L2 Interests are less than one percent of the Group Subordinate Amount. Any such shortfall as a result of the Mortgage Pool receiving the extra payment having a Weighted Average Adjusted Net Mortgage Rate lower than the Weighted Average Adjusted Net Mortgage Rate of the Mortgage Pool or Mortgage Pools from which the payment was reallocated shall be treated as a Realized Loss and if excess arises as result of the Mortgage Pool receiving the extra payment having a Weighted Average Adjusted Net Mortgage Rate higher than the Mortgage Pool or Mortgage Pools from which the payment was reallocated it shall reimburse the Middle REMIC for prior Realized Losses. If on any Distribution Date, the L1 Interest or L2 Interest remains outstanding after the related Pool Principal Balance is at zero as of the beginning of the Accrual Period corresponding to such Distribution Date, their Lower REMIC Interest Rate shall be the Weighted Average Adjusted Net Mortgage Rate of the Mortgage Pool with the lowest Weighted Average Adjusted Net Mortgage Rate that remains outstanding and the excess of interest at the Pass-Through Rate for the Subordinated Certificates over interest at such Weighted Average Adjusted Net Mortgage Rate shall be treated as paid from Lower REMIC to the Middle REMIC as reimbursement for prior Realized Losses.

(1) The Middle REMIC Interest Rate for the Middle REMIC Interest M-I-A-1, M-I-A-2 and M-I-A-RU will be equal to the interest rate on Lower REMIC Interest L-I-A-ZZZ.

(2) The Middle REMIC Interest Rate for the Middle REMIC Interest M-II-A-1 will be equal to the interest rate on Lower REMIC Interest L-II-A-ZZZ.

(3) The Middle REMIC Interest Rate for the Middle REMIC Interest M-III-A-1 will be equal to the interest rate on Lower REMIC Interest L-III-A-ZZZ.

(4) The Middle REMIC Interest Rate for the Middle REMIC Interest M-B-1, Middle REMIC Interest M-B-2, Middle REMIC Interest M-B-3, Middle REMIC Interest M-B-4, Middle REMIC Interest M-B-5, Middle REMIC Interest M-B-6 shall equal the Calculation Rate as defined in this Section 2.7. The Pass-Through Rate on each Class of Subordinated Certificates is variable and will be equal to the weighted average of the Middle REMIC Interest Rates on Middle REMIC Interest M-B-1, Middle REMIC Interest M-B-2, Middle REMIC Interest M-B-3, Middle REMIC Interest M-B-4, Middle REMIC Interest M-B-5, Middle REMIC Interest M-B-6, weighted on