Document:

Exhibit 10.1

    
      

    

    
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    Exhibit
      10.1

    

    CROSS
      LICENSE AGREEMENT

    

    This
      CROSS LICENSE AGREEMENT (“Cross License”), dated as of September 1, 2005
      (“Effective Date”), is made by and between Intuitive Surgical, Inc., a Delaware
      corporation having its principal place of business at 950 Kifer Road, Sunnyvale,
      California 94086, (“ISI”), and Hansen Medical, Inc., a Delaware corporation
      having its principal place of business at 380 North Bernardo Avenue, Mountain
      View, California 94043 (“Hansen”). Hansen and ISI may be referred to herein
      individually as a “Party”, and collectively as the “Parties”. 

    

    R
      E C I T A L S

    

    WHEREAS,
      ISI and Hansen each owns or controls rights under various patents, utility
      models and applications therefor in various countries of the world with respect
      to the medical devices industry; and

    

    WHEREAS,
      each Party desires to acquire licenses under such patents, utility models and
      applications therefor of the other Party and to grant licenses under such
      patents and utility models and applications therefor to the other Party, all
      for
      specific purposes and as provided in and subject to the terms of this Cross
      License. 

    

    NOW,
      THEREFORE, in consideration of the mutual covenants and premises contained
      herein, the Parties agree as follows:

    

    
      	 	
              1.

            	
              DEFINITIONS

            

    

    

    As
      used
      in this Cross License, the following capitalized terms shall have the following
      meanings: 

    

    1.1 “Acquisition”
means
      (A) any consolidation or merger of a Party with or into any other corporation
      or
      other entity or person, or any other corporate reorganization, other than any
      such consolidation, merger or reorganization in which the stockholders of a
      Party immediately prior to such consolidation, merger or reorganization,
      continue to hold at least a majority of the voting power of the surviving entity
      in substantially the same proportions (or, if the surviving entity is a wholly
      owned subsidiary, its parent) immediately after such consolidation, merger
      or
      reorganization; or (B) any transaction or series of related transactions to
      which a Party is a party in which in excess of fifty percent (50%) of such
      Party’s voting power is transferred; provided that an Acquisition shall not
      include any transaction or series of transactions principally for bona fide
      equity financing purposes in which cash is received by such Party or any
      successor or indebtedness of such Party is cancelled or converted or a
      combination thereof.

    

    
      
        
          [*]
            Confidential information in this Exhibit has been omitted and filed separately
            with the Commission. Confidential treatment has been requested with respect
            to
            the omitted portions.

          
          

        

        
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    1.2 “Affiliate”
means,
      with respect to a Party, any entity that controls, is under common control
      with,
      or is controlled by, such Party. For the purposes of this definition, the term
      “control” (with correlative meanings for the terms “controlled by” and “under
      common control with”) means that the applicable entity: (a) has beneficial
      ownership of greater than fifty percent (50%) of the voting securities of the
      subject corporation or other business organization with voting securities,
      (b)
      has greater than a fifty percent (50%) interest in the net assets or profits
      of
      the subject partnership or other business organization without voting
      securities, or (c) has the actual ability (through contract or otherwise) to
      direct and control the management and general business activities of the subject
      corporation, partnership or other business organization. 

     

    1.3 “Applicable
      Law”
means,
      as to any Person, any statute, law, rule, regulation, directive, treaty,
      judgment, order, decree or injunction of any Governmental Authority that is
      applicable to or binding upon such Person or any of its properties.

    

    1.4 “Asset
      Transfer”
shall
      mean a sale, lease, exclusive license or other disposition of all or
      substantially all of the assets of a Party.

    

    1.5 “CIP”
means
      a
      continuation-in-part patent application as defined in Section 201.08 of the
      Manual of Patent Examining Procedures. 

    

    1.6 “Co-exclusive”
means,
      with respect to the grant of license rights in a specified field of use and
      under identified intellectual property owned or controlled by the licensor,
      (a)
      that such license is the sole license under such intellectual property in such
      field of use, (b) that the licensor covenants that it and its Affiliates shall
      not grant to any other entity or party, any license or similar rights in such
      field of use under such licensor intellectual property (or any part thereof),
      including any license under such intellectual property to make, have made,
      use,
      offer for sale, sell, distribute and import products within the specified field
      of use (but provided that the foregoing shall not prevent licensor from granting
      (or impliedly granting) such rights solely to customers of licensor products
      that are covered by the applicable patent rights and solely to the extent
      required for such customers to use, re-sell, export and/or import such
      products), and (c) that the licensor retains the rights to use and practice
      such
      intellectual property in such field of use for its own account (i.e., despite
      the grant to the licensee, the licensor is not prevented from making, having
      made, using, marketing, offering for sale, selling, importing, distributing
      (directly or indirectly) or otherwise exploiting its products or services in
      the
      specified field of use under such intellectual property.) 

    

    
      
        
          [*]
            Confidential information in this Exhibit has been omitted and filed separately
            with the Commission. Confidential treatment has been requested with respect
            to
            the omitted portions.

          
          

        

        
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    1.7 “Effective
      Date”
shall
      have the meaning set forth in the Preamble of this Cross License.

     

    1.8 “Governmental
      Authority”
means
      any domestic or foreign government, governmental authority, court, tribunal,
      agency or other regulatory, administrative or judicial agency, commission or
      organization, and any subdivision, branch or department of any of the
      foregoing.

    

    1.9 “Hansen
      Disposable”
has
      the
      meaning set forth in Section 3.3(b). 

    

    1.10 “Hansen
      Field of Use”
means
      the research, development, manufacture, use, sale, promotion, distribution
      and
      importation of medical devices and systems for intravascular approaches for
      the
      diagnosis and/or treatment of cardiovascular, neurovascular and peripheral
      vascular diseases. 

    

    1.11 “Hansen
      Know-How”
means
      the information disclosed to ISI by Hansen prior to the Effective Date, but
      excluding all information disclosed in the Hansen Patents.
      

    

    1.12 “Hansen
      Investors Rights Agreement”
shall
      have the meaning set forth in Section 3.2

    

    1.13 “Hansen
      Patent”
means:
      (a) any patent or patent application that has a filing date on or prior to
      the
      Effective Date and that is either (i) owned by Hansen or an Affiliate of
      Hansen, or (ii) licensed to Hansen or an Affiliate of Hansen, with the
      right to grant sublicenses under such patents and patent applications; (b)
      any
      divisional, continuation, or continuation-in-part (but
      only to
      the
      extent of claims in such CIP that are based on and enabled by the subject matter
      disclosed in a patent or patent application meeting the criteria of subclause
      (a) above) application that is based upon the patents or patent applications
      in
      subclause (a) above, and all foreign patent applications claiming priority
      from
      any of the foregoing patents and patent applications; and (c) any patent issuing
      on any of the foregoing applications, and including any reissue, re-examination,
      renewal, extension, or supplementary protection certificate (or the like) of
      any
      such patent. Notwithstanding the foregoing, if a patent or patent application
      that would otherwise qualify as a Hansen Patent under this Section 1.13 is
      subject to an agreement between Hansen (or a Hansen Affiliate) and a third
      party
      requiring Hansen (or a Hansen Affiliate) to pay a royalty, net sales payment,
      or
      other consideration to such third party as a result of the practice of the
      licensed rights, then such patent or patent application shall be included in
      the
      Hansen Patents only if ISI agrees to bear the cost of such royalty, net sales
      payment, or other consideration that Hansen (or a Hansen Affiliate) is obligated
      to pay under such agreement based on ISI’s use or practice of such patent
      rights. For
      clarity, the term “Hansen Patent” shall not include any patent or application
      (x) that is owned or controlled by an entity that is not an Affiliate of Hansen
      as of the Effective Date and that subsequently becomes an Affiliate of Hansen;
      or (y) rights to which Hansen
      acquires from a third party after the Effective Date, whether by merger,
      acquisition, asset purchase, license or otherwise.

    

    
      
        
          [*]
            Confidential information in this Exhibit has been omitted and filed separately
            with the Commission. Confidential treatment has been requested with respect
            to
            the omitted portions.

          
          

        

        
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    1.14 “Hansen
      Royalty Product”
means
      either a Hansen System Product or a Hansen Disposable. 

    

    1.15 “Hansen
      System Product”
has
      the
      meaning set forth in Section 3.3(a). 

    

    1.16 “Hansen
      Trade Secret”
means
      any particular, identifiable Hansen
      Know-How
      that is and remains, at the applicable time, an actual trade secret of
Hansen,
      but
      excluding any
      Hansen Know-How that is retained in the unaided memory of an ISI employee.
      

    

    1.17 “Insolvent
      Party”
has
      the
      meaning set forth in Section 5.3

    

    1.18 “ISI
      Field of Use”
means
      (a) the research, development, manufacture, use, sale, promotion,
      distribution and importation of medical devices and systems for use in
      endoscopic, laparoscopic, thoracoscopic or open diagnosis and/or surgical
      procedures, including, without limitation, urologic surgery, ENT surgery,
      gynecologic surgery, general surgery, thoracic and cardiovascular surgery;
      and
      (b) the research, development, manufacture, use, sale, promotion,
      distribution and importation of medical devices and systems for
      gastrointestinal, respiratory, ENT, urologic and gynecologic endoluminal
      diagnosis and/or surgery. For clarity, the research, development, manufacture,
      use, sale, promotion, distribution and importation of medical devices and
      systems for intravascular approaches for the diagnosis and/or treatment of
      cardiovascular, neurovascular and peripheral vascular diseases are expressly
      excluded from the “ISI Field of Use”. 

    

    1.19 “ISI
      Know-How”
means
      the information disclosed to Hansen by ISI prior to the Effective Date
      (including without limitation information retained in the unaided memory of
      [*],
      obtained during their prior employment by ISI), but excluding all information
      disclosed in the ISI Patents.
      

    

    1.20 “ISI
      Licensed Product”
means
      a
      product or service manufactured or sold by ISI that embodies, falls within
      the
      scope of, or is made using a method described in, any Valid Claim of a Hansen
      Patent. 

    

    1.21 “ISI
      Patent”
means:
      (a) any patent or patent application that has a filing date on or prior to
      the
      Effective Date, is either (i) owned by ISI or an Affiliate of ISI, or
      (ii) licensed to ISI or an Affiliate of ISI, with the right to grant
      sublicenses under such patents and patent applications; (b) any divisional,
      continuation, or continuation-in-part (but
      only to
      the
      extent of claims in such CIP that are based on and enabled by the subject matter
      disclosed in a patent or patent application meeting the criteria of subclause
      (a) above) application that is based upon the patents or patent applications
      in
      subclause (a) above, and all foreign patent applications claiming priority
      from
      any of the foregoing patents and patent applications; and (c) any patent issuing
      on any of the foregoing applications, and including any reissue, re-examination,
      renewal, extension, or supplementary protection certificate (or the like) of
      any
      such patent. Notwithstanding the foregoing, if a patent or patent application
      that would otherwise qualify as an ISI Patent under this Section 1.18 is
      subject to an agreement between ISI (or an ISI Affiliate) and a third party
      requiring ISI (or an ISI Affiliate) to pay a royalty, net sales payment, or
      other consideration to such third party as a result of the practice of the
      licensed rights, then such patent or patent application shall be included in
      the
      ISI Patents only if Hansen agrees to bear the cost of such royalty, net sales
      payment, or other consideration that ISI (or an ISI Affiliate) is obligated
      to
      pay under such agreement based on Hansen’s use or practice of such patent
      rights. For clarity, the term “ISI Patent” shall not include any patent or
      application (x) that is owned or controlled by an entity that is not an
      Affiliate of ISI as of the Effective Date and that subsequently becomes an
      Affiliate of ISI; or (y) rights to which ISI
      acquires from a third party after the Effective Date, whether by merger,
      acquisition, asset purchase, license or otherwise. 

    

    
      
        
          [*]
            Confidential information in this Exhibit has been omitted and filed separately
            with the Commission. Confidential treatment has been requested with respect
            to
            the omitted portions.

          
          

        

        
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    1.22 “ISI
      Trade Secret”
means
      any particular, identifiable ISI Know-How that is and remains, at the applicable
      time, an actual trade secret of ISI, but
      excluding any
      ISI
      Know-How that is retained in the unaided memory of a Hansen employee.

    

    1.23 “Materials
      Cost”
means
      the sum of the following amounts paid by Hansen to a third party, all of which
      shall be calculated in accordance with U.S. generally accepted accounting
      principles consistently applied:

    

    (a) raw
      materials and packaging materials for producing the Hansen
      Products,

    

    (b) manufacturing,
      packaging, and/or sterilizing Hansen Products or any component thereof,
      and

    

    (c) with
      respect to the foregoing, all taxes (other than income taxes) and customs duty
      charges imposed by governmental authorities with respect thereto, to the extent
      paid by Supplier and not reimbursed or refunded by a third party.

     

    1.24 “Net
      Sales,”
with
      respect to a Hansen Royalty Product, means the actual amounts invoiced by Hansen
      or its distribution Affiliates to its respective customers or non-Affiliate
      distributors (excluding internal sales or transfers to Hansen’s distribution
      Affiliates that further distribute the product) on
      the
      sale or other commercial disposition of such Hansen Royalty Product (and
      including any amounts of installation charges that are in excess of normal
      and
      customary installation charges for similar products), less the sum of the
      following deductions: (a) discounts, returns, promotional allowances,
      volume and incentive rebates, chargebacks, retroactive price reductions and
      other similar adjustments or allowances actually given to such customers in
      the
      normal course of business; (b)  sales or use taxes, excise taxes,
      value-added taxes, and customs duties and other governmental charges included
      in
      the invoiced amount; and (c) normal and customary outbound transportation,
      shipping, and insurance, prepaid or allowed, if separately itemized on the
      invoice to the customer, all of the foregoing accounted for under U.S. Generally
      Accepted Accounting Principles as included in Hansen’s audited financial
      statement. Notwithstanding the foregoing, in the case of disposition of the
      product to an Affiliate of Hansen (excluding internal sales or transfers to
      Hansen’s distribution Affiliates that further distribute such product), Net
      Sales will be the sales price of such product generally available to an
      unaffiliated third party in an arms length transaction making similar quantity
      commitments at similar times.

     

    

    
      
        
          [*]
            Confidential information in this Exhibit has been omitted and filed separately
            with the Commission. Confidential treatment has been requested with respect
            to
            the omitted portions.

          
          

        

        
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    1.25 “Person”
means
      a
      natural individual, Governmental Authority, partnership, firm, corporation
      or
      other entity.

    1.26 “Valid
      Claim”
means
      a
      claim of an issued or granted unexpired patent, which claim has not been
      declared invalid or unenforceable by an un reversed decision or judgment of
      a
      court of competent jurisdiction or other appropriate governmental authority
      from
      which no further appeal can be taken, and which claim has not been admitted
      to
      be invalid through disclaimer, or found to be unenforceable or no longer
      patentable through reissue, reexamination, interference, or
      opposition.

    

    1.27 “Year”
shall
      mean each twelve (12) month period beginning on the Effective Date and
      thereafter on the anniversary date thereof.

    

    1.28 “Share
      Transfer Agreement”
has
      the
      meaning set forth in Section 3.1.

    

    1.29 “Term”
has
      the
      meaning set forth in Section 5.1. 

    

    
      	 	
              2.

            	
              GRANT
                OF LICENSES

            

    

    

    2.1 Cross
      Licenses.

    

    (a) From
      ISI
      to Hansen. Subject to the terms and conditions of this Cross License, ISI hereby
      grants to Hansen a Co-exclusive, worldwide, perpetual (except as provided in
      Article 5 herein), royalty-bearing, and non-assignable (except as provided
      in
      Section 9.1 herein) license under the ISI Patents to use and practice all
      inventions claimed therein solely in the Hansen Field of Use, including to
      make,
      have made, use, promote, offer for sale, import and sell Hansen Royalty Products
      in the Hansen Field of Use. Hansen will have the right to sublicense such rights
      solely in accordance with Section 2.4. 

    

    
      
        
          [*]
            Confidential information in this Exhibit has been omitted and filed separately
            with the Commission. Confidential treatment has been requested with respect
            to
            the omitted portions.

          
          

        

        
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    (b) From
      Hansen to ISI. Subject to the terms and conditions of this Cross License, Hansen
      hereby grants to ISI a Co-exclusive, worldwide, perpetual (except as provided
      in
      Article 5 herein), fully paid and royalty-free (except as provided in Section
      1.11 herein), and non-assignable (except as provided in Section 9.1 herein)
      license under the Hansen Patents to use and practice all inventions claimed
      therein solely in the ISI Field of Use, including to make, have made, use,
      promote, offer for sale, import and sell ISI Licensed Products solely in the
      ISI
      Field of Use. ISI will have the right to sublicense such rights solely in
      accordance with Section 2.4. 

    

    2.2 Know-How
      License From ISI to Hansen.
      Subject
      to the terms and conditions of this Cross License, ISI hereby grants to Hansen
      a
      non-exclusive, worldwide, perpetual (except as provided in Article 5 herein),
      fully-paid, royalty-free, and non-assignable (except as provided in Section
      9.1
      herein) license (a) to use and practice all the ISI Know-How (including ISI
      Trade Secrets (if any)) solely in connection with the research, development,
      manufacture, promotion, use, import and sale of Hansen products in the Hansen
      Field of Use, and (b) to use and practice any ISI Know-How that are not ISI
      Trade Secrets in connection with the research, development, manufacture,
      promotion, use, import and sale of Hansen products outside the Hansen Field
      of
      Use. Hansen shall have the right to sublicense such rights solely to customers
      of Hansen products solely in connection with the sale and use of such products,
      and to collaborators of Hansen assisting in developing Hansen products in the
      Hansen Field of Use provided such collaborators have a need to know such ISI
      Know-How for the purposes of such collaboration and who execute a
      confidentiality agreement with terms at least as protective as the terms of
      Section 6.5.

    

    2.3 Know-How
      License From Hansen to ISI.
      Subject
      to the terms and conditions of this Cross License, Hansen hereby grants to
      ISI a
      non-exclusive, worldwide, perpetual (except as provided in Article 5 herein),
      fully-paid, royalty-free, and non-assignable (except as provided in Section
      9.1
      herein) license (a) to use and practice all the Hansen Know-How (including
      Hansen Trade Secrets (if any)) solely in connection with the research,
      development, manufacture, promotion, use, import and sale of ISI products in
      the
      ISI Field of Use, and (b) to use and practice any Hansen Know-How that are
      not
      Hansen Trade Secrets in connection with the research, development, manufacture,
      promotion, use, import and sale of ISI products outside the ISI Field of Use.
      ISI shall have the right to sublicense such rights solely to customers of ISI
      products solely in connection with the sale and use of such products, and to
      collaborators of ISI assisting in developing ISI products in the ISI Field
      of
      Use provided such collaborators have a need to know such Hansen Know-How for
      the
      purposes of such collaboration and who execute a confidentiality agreement
      with
      terms at least as protective as the terms of Section 6.5.

    

    2.4 Sublicensing.
      Neither
      Party may sublicense any of the rights and licenses granted to it under Section
      2.1 to any third party without the prior written consent of the other party.
      Either Party may request the other Party’s consent to grant it the right to
      sublicense the rights and licenses granted in Section 2.1 to such Party’s
      partners with whom such Party is involved in joint product development, and
      the
      Party receiving such request will reasonably consider it and will not
      unreasonably withhold such consent. Notwithstanding any of the foregoing, ISI’s
      consent shall not be required for Hansen to sublicense any of the rights and
      licenses granted to it under Section 2.1 solely to customers of Hansen products
      that are covered by the applicable patent rights and solely to the extent
      required for such customers to use, re-sell, export and/or import such products,
      and Hansen’s consent shall not be required for ISI to sublicense any of the
      rights and licenses granted to it under Section 2.1 solely to customers of
      ISI
      products that are covered by the applicable patent rights and solely to the
      extent required for such customers to use, re-sell, export and/or import such
      products. 

    

    
      
        
          [*]
            Confidential information in this Exhibit has been omitted and filed separately
            with the Commission. Confidential treatment has been requested with respect
            to
            the omitted portions.

          
          

        

        
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    2.5 Retained
      Rights.
      For
      clarity, none of the licenses granted in Sections 2.1 through 2.4 shall restrict
      (a) Hansen from itself using and practicing all inventions claimed in the Hansen
      Patents in any field of use and (b) ISI from itself using and practicing all
      inventions claimed in the ISI Patents in any field of use. 

    

    2.6 Disclosure
      of Patent Files.
      Each
      Party shall, to the extent such disclosure has not already been made, provide
      to
      the other Party within [*] days after the Effective Date complete and accurate
      copies of all unpublished patent applications as filed owned or licensed by
      such
      Party as of the Effective Date. Further, each Party shall respond accurately
      to
      reasonably requests by the other Party to provide updates as to the status
      of
      the prosecution of applications in the ISI Patents or Hansen Patents (as
      applicable) and to provide copies of any newly filed applications in the ISI
      Patents or Hansen Patents (as applicable). 

    

    2.7 Compliance
      with Sublicense Obligations.
      Hansen
      covenants that it shall comply with any applicable terms of any license
      agreement between ISI and a third party that grant to ISI license rights under
      the third party’s patents, which patents are ISI Patents that sublicensed to
      Hansen under the terms of this Cross License. ISI covenants that it shall comply
      with any applicable terms of any license agreement between Hansen and a third
      party that grant to Hansen license rights under the third party’s patents, which
      patents are Hansen Patents that sublicensed to ISI under the terms of this
      Cross
      License. 

    

    
      	 	
              3.

            	
              CONSIDERATION

            

    

    

    3.1 Stock
      Transfer.
      In
      consideration of the rights and licenses granted by ISI to Hansen under this
      Cross License, Hansen will issue to ISI Five Hundred Thousand
      (500,000) shares
      of
      Hansen’s Series B Preferred Stock pursuant to and in accordance with the terms
      of the Share Transfer Agreement entered into by the Parties, the form of which
      is set forth in Exhibit A. 

    

    
      
        
          [*]
            Confidential information in this Exhibit has been omitted and filed separately
            with the Commission. Confidential treatment has been requested with respect
            to
            the omitted portions.

          
          

        

        
          8

          
            

          

        

        
          
          

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    3.2 Investor
      Rights.
      ISI
      shall within five (5) business days after the Effective Date, enter into an
      Amended and Restated Investor Rights Agreement among Hansen, ISI and the other
      preferred stockholders of Hansen (the “Hansen Investor Rights Agreement”) in
      substantially the form attached as Exhibit B.

    

    3.3 Royalty.
      In
      consideration of the rights and licenses granted by ISI to Hansen under Section
      2.1(a) of this Cross License, Hansen shall pay ISI:

    

    (a) Royalties
      of [*] of the Net Sales of all Hansen hardware products (including proprietary
      Hansen software components) comprising imaging, guidance or catheter control
      systems for use in the Hansen Field of Use (collectively, “Hansen System
      Products”) during the Term; and

    

    (b) Royalties,
      at a royalty rate of ranging from [*] to [*] on the Net Sales of all [*] used
      in
      the Hansen Field of Use [*], including, without limitation, [*]

    
      

      
        	 	
                (i)

              	
                [*]

              

      

      

      
        	 	
                (ii)

              	
                [*]

              

      

      

      
        	 	
                (iii)

              	
                [*];
                  or

              

      

      

      
        	 	
                (iv)

              	
                [*]

              

      

       

    

    (c) The
      Parties hereby acknowledge and agree that the foregoing method of calculating
      royalties due under this Cross License shall apply to all Hansen Royalty
      Products as specified in this Section 3.3, without regard to whether such
      any such Hansen Royalty Product embodies or practices any of the claims of
      the
      ISI Patents. The Parties further agree that this method of calculating royalties
      is more convenient for the Parties than attempting to resolve the question
      of
      whether each particular Hansen Royalty Product sold does, or does not, embody
      or
      practice any claim of the ISI Patents. 

    

    3.4 Minimum
      Royalties.
      Hansen
      will pay ISI yearly license minimum royalties as follows:

     

    
      	 	
              (a)

            	
              [*]

            

    

    

    
      	 	
              (b)

            	
              [*]

            

    

    

    
      
        
          [*]
            Confidential information in this Exhibit has been omitted and filed separately
            with the Commission. Confidential treatment has been requested with respect
            to
            the omitted portions.

          
          

        

        
          9

          
            

          

        

        
          
          

          CONFIDENTIAL

          CERTAIN
            INFORMATION HAS BEEN REDACTED

          CONFIDENTIAL
            TREATMENT REQUESTED

        

      

    

    

    The
      minimum royalty payments are nonrefundable, but they are creditable against
      royalty payments due pursuant to Section 3.3 until the entire credit is
      exhausted. The [*] minimum royalties will be paid in equal [*]
      installments.

    

    
      	 	
              4.

            	
              ACCOUNTING
                AND REPORTS

            

    

    

    4.1 Payments
      and Royalty Reports.
      Hansen
      shall make royalty payments to ISI in accordance with Section 3 above on a
      quarterly basis. Within [*] days after the end of each calendar quarter during
      the Term, after commercial sales of Hansen Royalty Products has commenced,
      Hansen shall deliver to ISI a written report setting forth the total number
      of
      units of the Hansen Royalty Products sold or otherwise commercially disposed
      (or, if appropriate, indicating that no Hansen Royalty Product was sold during
      such calendar quarter) and a calculation of the royalties owed to ISI hereunder
      for the applicable quarterly period. If no royalties are due hereunder in any
      calendar quarter, Hansen shall so indicate in its written report. Hansen shall
      accompany such written report with an appropriate payment of royalty due for
      such quarterly period.

    

    4.2 Overdue
      Payments.
      If
      payment of any amount due to ISI becomes overdue, ISI may, without prejudice
      to
      its other rights or remedies, charge interest on a day to day basis from the
      due
      date until the payment has been paid in full, at the rate of one percent (1.0%)
      per month or, if less, such other rate as may be the maximum permitted by law.
      Hansen shall not be entitled to withhold payment in whole or in part on the
      grounds that it has a claim, counterclaim or set off against ISI.

    

    4.3 Taxes.
      Hansen
      shall be permitted to deduct from payments made by Hansen to ISI under this
      Cross License any foreign or domestic governmental taxes or charges of any
      kind
      that Hansen may be required by law to withhold from such payments. Hansen shall
      use commercially reasonable efforts to minimize any such taxes or charges.
      Hansen shall provide ISI with official receipts issued by the appropriate taxing
      authority, or such other evidence as is reasonably requested by ISI to establish
      that such taxes or charges have been paid. If, on the other hand, ISI has the
      legal obligation to collect such taxes, then ISI alone shall be responsible
      for
      paying such amount.

    

    4.4 Books
      And Records; Audit.
      Hansen
      will keep complete and accurate books and records showing the information by
      which Hansen arrived at a royalty determination and shall, during the Term
      and
      for a period of three (3) years after termination of this Cross License, permit
      a mutually agreed auditor from a nationally recognized firm to inspect and
      copy
      said records as such auditor may deem necessary to complete the inspection
      (but
      not to exceed one (1) inspection per year and no more than one (1) inspection
      of
      records covering any particular time period) solely to verify the accuracy
      of
      Hansen’s royalty reports. Such inspection may be made by ISI hereunder at any
      time and from time to time during regular business hours upon at least five
      (5)
      business days’ advance written notice. The fees and expenses of such inspection
      shall be borne by ISI, except that, if an underpayment in royalties of more
      than
      five percent (5%) of the total royalties due to ISI hereunder for any payment
      period is discovered, then such fees and expenses shall be borne by Hansen.
      If
      ISI agrees to pay a Hansen licensor royalty or other amounts for the sublicense
      to ISI of Hansen Patents that are licensed to Hansen, then the above records
      and
      audit provisions will apply to ISI mutatis
      mutandis as
      to ISI
      products covered by such Hansen Patents. 

    

    
      
        
          [*]
            Confidential information in this Exhibit has been omitted and filed separately
            with the Commission. Confidential treatment has been requested with respect
            to
            the omitted portions.

          
          

        

        
          10

          
            

          

        

        
          
          

          CONFIDENTIAL

          CERTAIN
            INFORMATION HAS BEEN REDACTED

          CONFIDENTIAL
            TREATMENT REQUESTED

        

      

    

    

    
      	 	
              5.

            	
              TERM
                AND TERMINATION

            

    

    

    5.1 Term.
      This
      Cross License shall commence on the Effective Date and shall continue in effect
      until the expiration of the last to expire of the ISI Patents and the Hansen
      Patents, (“Term”), unless earlier terminated in accordance with the following
      provisions of this Section 5. Upon such expiration, the license rights granted
      in Sections 2.3 and 2.4 shall survive. 

    

    5.2 Material
      Breach.
      

    

    (a) If
      either
      Party believes that the other Party is in material breach of this Agreement,
      then such Party may deliver notice of such alleged breach to the other Party.
      In
      such written notice, the noticing Party shall identify the actions or conduct
      that such Party would consider to be an acceptable cure of such breach. The
      Party receiving such notice shall use diligent efforts to cure such breach
      as
      soon as practicable after receiving such written notice to cure such breach,
      unless such Party believes that it is not in breach, in which case the Parties
      shall meet promptly thereafter and discuss in good faith the issue and seek
      to
      reach a resolution mutually acceptable to both Parties. If the allegedly
      breaching Party fails to cure such noticed breach, then, except as otherwise
      provided in subsection (b) or in Section 5.3 below, the noticing Party shall
      not
      be permitted to terminate this Agreement (and each Party covenants and agrees
      that the Party shall not seek, in any court or other proceeding, to terminate
      the Agreement as a remedy except as permitted in subsection (b) or Section
      5.3
      below), but may seek and obtain all other remedies as are available to such
      Party at law or in equity pursuant to Section 5.7 below, if such breach is
      proved to have occurred and not have been cured. 

    

    (b) If
      Hansen
      breaches its obligation to pay royalties as required in Section 3.3, or to
      pay
      royalties to a licensor of ISI as contemplated in Section 1.18 for patent rights
      sublicensed to ISI, then ISI may deliver notice of such breach to Hansen,
      specifying the amount that is owed and the basis for ISI’s belief that such
      amounts are owed and past-due. If ISI breaches its obligation to pay royalties
      to a licensor of Hansen as contemplated in Section 1.13 for patent rights
      sublicensed to ISI, then Hansen may deliver notice of such breach to ISI,
      specifying the amount that is owed and the basis for Hansen’s belief that such
      amounts are owed and past-due. If Hansen or ISI disputes that such amount is
      actually owed, such dispute shall be resolved (a) by the auditor selected
      pursuant to Section 4.4, if such dispute is solely as to the amount of royalties
      owed, and not as to whether there is a royalty obligation for particular
      products at issue, or (b) by litigation in court in accordance with Section
      9.3.
      The following sentence shall not apply unless and until such dispute is resolved
      in the non-breaching Party’s favor, and the breaching Party does not pay the
      amount determined to be owed within [*] days of such determination. If the
      breaching Party’s failure to pay when due royalty amounts owed that are in
      excess of [*], and such Party does not cure such failure to pay the owed
      royalties by the date [*] days after such notice, then such breach will be
      deemed to be a “Material Breach,” for which the non-breaching Party may
      terminate this Agreement within 30 days by written notice to the Party in
      breach, provided if such dispute is resolved in litigation in court, such
      termination will be effective at such time no appeal is or can be taken from
      the
      court’s decision.

    

    
      
        
          [*]
            Confidential information in this Exhibit has been omitted and filed separately
            with the Commission. Confidential treatment has been requested with respect
            to
            the omitted portions.

          
          

        

        
          11

          
            

          

        

        
          
          

          CONFIDENTIAL

          CERTAIN
            INFORMATION HAS BEEN REDACTED

          CONFIDENTIAL
            TREATMENT REQUESTED

        

      

    

    

    5.3 Infringement
      Outside Licensed Field; Termination for Willful Infringement.
      

    

    (a) Each
      Party acknowledges and agrees that the license rights granted under this
      Agreement to it by the other Party are limited to the specific, identified
      fields of use. Hansen covenants that it shall not knowingly practice any issued
      ISI Patents outside of the Hansen Field of Use in a manner that infringes the
      ISI Patents, and ISI covenants that it shall not knowingly practice any issued
      Hansen Patents outside the ISI Field of Use in a manner that infringes the
      Hansen Patents. 

    

    (b) If
      ISI
      believes that Hansen is violating its covenant in subsection (a) above and
      is
      infringing the ISI Patents by actions outside the Hansen Field of Use, ISI
      may
      give Hansen notice of such belief (the “Belief of Infringement”), which notice
      shall include all details that are the basis for such belief and ISI’s proposal
      to cure such violation, and the Parties shall then meet promptly thereafter
      under Section 5.7(a) to discuss the noticed Belief of Infringement and ISI’s
      proposed resolution and to seek to reach a resolution of such
      Dispute.
      If
      Hansen does not cease the violation that is the basis for such Belief of
      Infringement within [*] days of the date Hansen receives such notice, and if
      the
      Parties do not reach a mutually acceptable other resolution to such matter
      within [*] days after the receipt of the notice, then either Party may have
      the
      matters relating to the Dispute and claim arising out of this Section 5.3(b)
      settled by litigation in court in accordance with Section 9.3, to determine
      if
      Hansen in fact has infringed one or more valid and enforceable issued ISI
      Patents outside the Hansen Field of Use. For the avoidance of doubt, Hansen
      may
      raise as affirmative defenses to any infringement action brought by ISI, or
      as a
      basis for declaratory relief action brought by Hansen, any and all defenses,
      available at law or equity, that are available in patent actions. If
such
      litigation results in a judgment of infringement from which no appeal can be
      or
      is taken, and Hansen,
      despite such infringement judgment by the court, fails to cease conducting
      the
      actions that were determined by the court to be infringing the ISI Patents
      by
      the date [*] days after the date after which no appeal can be or is taken (the
      “Determination Date”), then such failure shall be a “Material Breach,” for which
      ISI may terminate this Agreement within 30 days by written notice to
      Hansen. 

    

    
      
        
          [*]
            Confidential information in this Exhibit has been omitted and filed separately
            with the Commission. Confidential treatment has been requested with respect
            to
            the omitted portions.

          
          

        

        
          12

          
            

          

        

        
          
          

          CONFIDENTIAL

          CERTAIN
            INFORMATION HAS BEEN REDACTED

          CONFIDENTIAL
            TREATMENT REQUESTED

        

      

    

    

    (c) If
      Hansen
      believes that ISI is violating its covenant in subsection (a) above and is
      infringing the Hansen Patents by actions outside the ISI Field of Use, Hansen
      may give ISI notice of such belief (the “Belief of Infringement”), which notice
      shall include all details that are the basis for such belief and Hansen’s
      proposal to cure such violation, and the Parties shall then meet promptly
      thereafter under Section 5.7(a) to discuss the noticed Belief of Infringement
      and Hansen’s proposed resolution and to seek to reach a resolution of such
      Dispute. If ISI does not cease the violation that is the basis for such Belief
      of Infringement within [*] days of the date ISI receives such notice, and if
      the
      Parties do not reach a mutually acceptable other resolution to such matter
      within [*] days after the receipt of the notice, then either Party may have
      the
      matters relating to the Dispute and claim arising out of this Section 5.3(c)
      settled by litigation in court in accordance with Section 9.3, to determine
      if
      ISI in fact has infringed one or more valid and enforceable issued Hansen
      Patents outside the ISI Field of Use. For the avoidance of doubt, ISI may raise
      as affirmative defenses to any infringement action brought by Hansen, or as
      a
      basis for declaratory relief action brought by ISI, any and all defenses,
      available at law or equity, that are available in patent actions. If such
      litigation results in a judgment of infringement from which no appeal can be
      or
      is taken, and ISI, despite such infringement judgment by the court, fails to
      cease conducting the actions that were determined by the court to be infringing
      the Hansen Patents by the date [*] days after the Determination Date (as to
      such
      judgment), then such failure shall be a “Material Breach,” for which Hansen may
      terminate this Agreement within 30 days by written notice to ISI.

    

    5.4 Termination
      for Bankruptcy.
      

    

    (a) Notice
      of Bankruptcy Event.
      If
      either of the following events (a “Bankruptcy Event”) occurs with respect to a
      Party (the “Bankrupt Party”), such Insolvent Party shall immediately notify the
      other Party of the occurrence of such event:

    

    (i)    
       Any
      application, petition or action for relief is submitted by such Bankrupt Party
      for commencement of proceedings under bankruptcy, corporate reorganization,
      insolvency or moratorium law or any other law for the relief of, or relating
      to,
      debtors, now or hereafter in effect, or makes any assignment for the benefit
      of
      creditors covering all or substantially all of its assets; or 

    

    (ii)    
       An
      involuntary petition is filed against such Bankrupt Party under any bankruptcy
      statute now or hereafter in effect, or a custodian, receiver, trustee, assignee
      for the benefit of creditors (or other similar official) is appointed to take
      possession, custody or control of any property of such Insolvent
      Party.

    

    
      
        
          [*]
            Confidential information in this Exhibit has been omitted and filed separately
            with the Commission. Confidential treatment has been requested with respect
            to
            the omitted portions.

          
          

        

        
          13

          
            

          

        

        
          
          

          CONFIDENTIAL

          CERTAIN
            INFORMATION HAS BEEN REDACTED

          CONFIDENTIAL
            TREATMENT REQUESTED

        

      

    

    

    (b) Right
      to Terminate.
      If the
      Bankruptcy Event is not cured or otherwise terminated within 90 days following
      occurrence the Bankruptcy Event, the Party that is not the Bankrupt Party shall
      have the right to terminate this Cross License by giving notice in writing
      to
      the Bankrupt Party.

    

    5.5 Effect
      of Termination.
      In the
      event of termination of this Cross License by one Party (“Terminating Party”)
      pursuant to Section 5.2 or 5.3 or 5.8 or paragraph 7 of Exhibit C, all
      licenses and rights granted hereunder by the Terminating Party to the other
      Party (“Terminated Party”), shall automatically terminate as of the date of such
      termination of this Cross License (except as otherwise provided in Section
      5.8),
      but the licenses and rights granted hereunder by the Terminated Party to the
      Terminating Party shall survive such termination, subject to the terms and
      conditions of this Cross License. In the event of termination of this Cross
      License by one Party pursuant to Section 5.4, all licenses and rights
      granted hereunder by the each Party to the other Party shall automatically
      terminate as of the date of such termination of this Cross License. Termination
      or expiration of the Cross License shall not relieve any Party of any obligation
      or liability accrued under this Cross License prior to termination or
      expiration.

    

    5.6 Survival.
      Upon
      the expiration or any termination of this Cross License, the provisions of
      Sections 1, 2.2, 2.3, 4, 5.5, 5.6, 6.4, 6.5, 7.1, 7.2, 8 and 9 all shall survive
      such expiration or termination. 

    

    5.7 Dispute
      Resolution.
      

    

    (a) If
      any
      dispute or issue arises between the Parties (a “Dispute”), including any alleged
      breach of the terms or obligations of a Party (such as an allegation of breach
      of the covenants under Section 5.3(a)), or the extent of a Party’s rights under
      the terms hereof, then the Parties shall resolve such Dispute pursuant to the
      terms of this Section 5.7. As to any such Dispute, either Party may give notice
      to the other Party to seek to resolve such Dispute. Within ten days of giving
      of
      any such notice, the CEOs of the Parties shall meet to discuss the Dispute
      and
      seek to reach a mutually agreeable resolution to the Dispute, which resolution
      shall be set forth in writing signed by the Parties. If the CEOs of the Parties
      cannot reach agreement on a resolution to the Dispute that is subject of a
      notice provided under this Section 5.7(a), within [*] days of commencing
      discussions to resolve the matter, then either Party may have such Dispute
      resolved by litigation in a court of applicable jurisdiction (subject to Section
      9.3) except as provided in Section 5.7(b), and provided further that the
      remedies available to the Parties in such litigation are expressly limited
      by
      the applicable terms of this Agreement (including Section 5.2(a)).

    

    
      
        
          [*]
            Confidential information in this Exhibit has been omitted and filed separately
            with the Commission. Confidential treatment has been requested with respect
            to
            the omitted portions.

          
          

        

        
          14

          
            

          

        

        
          
          

          CONFIDENTIAL

          CERTAIN
            INFORMATION HAS BEEN REDACTED

          CONFIDENTIAL
            TREATMENT REQUESTED

        

      

    

    

    (b) A
      Party
      shall have the rights to initiate, on written notice to the other Party, the
      procedure set forth in Exhibit C at any time, for the Parties to discuss a
      particular new product being developed by such Party that is intended to be
      commercialized outside such Party’s licensed field (i.e.,
      outside
      the Hansen Field of Use as to a Hansen new product, or outside the ISI Field
      of
      Use as to an ISI new product) to determine if such new product would, if sold
      in
      such intended use, infringe any valid and enforceable issued patent in the
      other
      Party’s patent portfolio. Upon such notice, the parties shall proceed under the
      terms of Exhibit C. For any dispute under Exhibit C that is to be resolved
      by
      arbitration, such dispute shall be heard and a resolution determined by an
      arbitration conducted in San Francisco, California under the American
      Arbitration Association Commercial Arbitration Rules and Supplementary
      Procedures for Large Complex Disputes (together the “AAA Rules”) by three
      arbitrators who are neutral and independent of the Parties and who have
      expertise in the medical device field and in patents relating to medical
      devices. Each Party shall select an arbitrator, and the selected arbitrators
      will select a third arbitrator, provided
      that each
      such
      selected arbitrator must meet the foregoing criteria to be empowered to serve
      in
      the arbitration. If the arbitrators selected by the Parties cannot agree on
      a
      third arbitrator within thirty (30) days, the third arbitrator will be selected
      by the AAA. The arbitration shall be conducted in accordance with the AAA Rules,
      as such rules and procedures are supplemented or modified by the terms of this
      Section 5.7 and/or by written agreement of the Parties. The Parties shall have
      such discovery rights as is reasonable in the case and as the arbitrators may
      allow, consistent with the goal of providing for a full and fair hearing of
      the
      Dispute and an equitable resolution of the Dispute, but in no event broader
      than
      that discovery permitted under the Federal Rules of Civil Procedure. In
      conducting the arbitration, the arbitrators shall apply the California Rules
      of
      Evidence and shall allow raising of all affirmative defenses to an infringement
      action, available at law or in equity, in their analysis of whether a valid
      and
      enforceable issued patent is infringed. The arbitrators will hear each Party’s
      case and positions as to the Dispute. In any event, such remedies cannot be
      contrary to the terms of Exhibit C, and the arbitrators cannot award any Party
      any punitive, special, indirect or consequential damages. The Parties will
      keep
      the arbitration and the results of the arbitration confidential.

    

    (c) Notwithstanding
      any other provision of this Section 5.7, each Party shall be entitled to seek
      a
      preliminary injunction or other temporary equitable remedy in court to protect
      such Party from immediate, imminent harm by breach of this Agreement by the
      other Party. Each Party acknowledges and agrees that the other Party hereto
      would be irreparably damaged in the event of a continuing breach of Section
      5.3(a).

    

    5.8 Termination
      by Hansen.
      Twelve
      and one-half (12.5) years after the Effective Date, Hansen shall have the right
      to terminate the Cross License and all its obligations under Section 3.3 by
      written notice to ISI. Upon such termination, all licenses granted by ISI to
      Hansen shall terminate, except that the license granted under Section 2.2 shall
      survive such termination indefinitely solely as to ISI Know-How that are not
      ISI
      Trade Secrets, and all licenses granted by Hansen to ISI under Section 2.1(b)
      and 2.3 shall survive such termination, subject to all other applicable terms
      of
      the Cross License. 

    

    
      
        
          [*]
            Confidential information in this Exhibit has been omitted and filed separately
            with the Commission. Confidential treatment has been requested with respect
            to
            the omitted portions.

          
          

        

        
          15

          
            

          

        

        
          
          

          CONFIDENTIAL

          CERTAIN
            INFORMATION HAS BEEN REDACTED

          CONFIDENTIAL
            TREATMENT REQUESTED

        

      

    

    

    
      	 	
              6.

            	
              MUTUAL
                COVENANTS

            

    

    

    6.1 No
      Solicitation.
      Each
      Party agrees that it will not, directly or indirectly, solicit, recruit, retain,
      hire or employ any person that such Party knows, or has reason to know, is
      employed by the other Party. Notwithstanding the foregoing, nothing herein
      shall
      be construed to prohibit either Party from placing advertisements for employment
      that are directed at the public at large in any newspaper, trade magazine,
      journals or other periodical in general circulation. 

    

    6.2 Third
      Party Infringement.
      

    

    (a) ISI
      Patents.
      If a
      Party becomes aware that any ISI Patent is infringed by a third party in the
      Hansen Field of Use (a “Hansen Field Infringement”), such Party shall promptly
      notify the other Party in writing, which notice shall set forth the facts known
      to such Party regarding such believed infringement in reasonable detail. ISI
      shall have the primary right, but not the obligation, to institute, prosecute,
      and control any action or proceeding with respect to infringement of ISI Patents
      Rights, by counsel of its own choice, and, if such action or proceeding is
      brought by ISI, Hansen shall have the right, at its own expense, to be
      represented in such action or proceeding by counsel of its own choice, and
      also
      to join such action as a plaintiff to assert claims for infringement if such
      Hansen Field Infringement has resulted in lost profits by Hansen or its
      Affiliates due to lost sales. For any infringement of the ISI Patents outside
      of
      the Hansen Field of Use, ISI shall have the sole and exclusive rights to take
      action regarding such infringement, including enforcing the patents and settling
      any such actions. Notwithstanding the foregoing, if ISI does not bring such
      action or proceedings as to such Hansen Field Infringement within a period
      of
      one hundred twenty (120) days after receiving notice from Hansen, Hansen shall
      have the right to bring and control (except as otherwise provided below) any
      such action by counsel of Hansen’s own choice (a “Hansen Action”), [*]. For the
      purpose of this Section 6.2(a), [*] shall require that [*], the following
      factors, which the parties agree are [*], reasonably and in good faith: [*].
      For
      any Hansen Action, ISI has the right with counsel of its own choice, to defend
      itself against, and to control the responses to, any claim or defense or
      counterclaim raised in the Hansen Action against ISI or regarding the validity
      or enforceability of any ISI Patents.. The Parties will reasonably cooperate
      in
      the prosecution and defense of claims concerning the defendant.

    

    (b) Hansen
      Patents.
      If a
      Party becomes aware that any Hansen Patent is infringed by a third party in
      the
      ISI Field of Use (an “ISI Field Infringement”), such Party shall promptly notify
      the other Party in writing, which notice shall set forth the facts known to
      such
      Party regarding such believed infringement in reasonable detail. Hansen shall
      have the primary right, but not the obligation, to institute, prosecute, and
      control any action or proceeding with respect to such ISI Field Infringement
      of
      Hansen Patents Rights, by counsel of its own choice, and, if Hansen brings
      such
      action or proceeding, ISI shall have the right, at its own expense, to be
      represented in such action or proceeding by counsel of its own choice, and
      also
      to join such action as a plaintiff to assert claims for infringement if such
      ISI
      Field Infringement has resulted in lost profits by ISI or its Affiliates due
      to
      lost sales. With respect to any ISI Field Infringement that is causing a
      material, detrimental impact on ISI, Hansen agrees to meet with ISI to discuss
      such infringement in good faith and to reasonably consider ISI’s requests
      regarding Hansen taking action to cause the cessation of such infringement.
      Notwithstanding the foregoing, if Hansen does not bring such action or
      proceedings as to such ISI Field Infringement within a period of one hundred
      twenty (120) days after receiving notice from ISI, ISI shall have the right
      to
      bring and control (except as provided below) any such action by counsel of
      ISI’s
      own choice (an “ISI Action”), [*]. For the purpose of this Section 6.2(b), [*]
      shall require that [*], the following factors, which the parties agree are
      [*],
      reasonably and in good faith: [*]. For any ISI Action, Hansen has the right
      with
      counsel of its own choice, to defend itself against, and to control the
      responses to, any claim or defense or counterclaim raised in the ISI Action
      against Hansen or regarding the validity or enforceability of any Hansen
      Patents.. The Parties will reasonably cooperate in the prosecution and defense
      of claims concerning the defendant.

    

    
      
        
          [*]
            Confidential information in this Exhibit has been omitted and filed separately
            with the Commission. Confidential treatment has been requested with respect
            to
            the omitted portions.

          
          

        

        
          16

          
            

          

        

        
          
          

          CONFIDENTIAL

          CERTAIN
            INFORMATION HAS BEEN REDACTED

          CONFIDENTIAL
            TREATMENT REQUESTED

        

      

    

    

    (c) Cooperation.
      If one
      Party brings any action or proceeding as provided above, the other Party agrees,
      if necessary, to give the first Party reasonable assistance to file and to
      prosecute such suit, at the filing Party’s expense. 

    

    (d) Allocation
      of Recoveries.
      The
      costs and expenses of all suits brought by either Party under this Section
      6.2
      shall be reimbursed on a pro-rata basis to both Parties out of any damages
      or
      other monetary awards recovered in such actions in favor of either Hansen and/or
      ISI. Any amounts of such damages or other monetary awards recovered in such
      actions remaining after such reimbursement shall be paid first to each Party
      according to the amounts of damages awarded to the Party for lost sales as
      proved by the Party in such action (on a pro
      rata basis
      based on the amounts of lost sales damages awarded to each Party, if
      applicable), and any remaining amounts of such damages or other awards to then
      be divided between Hansen and ISI with [*] of the remainder to the Party
      bringing and prosecuting such action or proceeding, and [*] to the other Party.
      No settlement or consent judgment or other voluntary final disposition of a
      suit
      under this Section 6.2 may be entered into without the joint consent of Hansen
      and ISI (which consent shall not be withheld unreasonably). 

    

    6.3 Patent
      Marking.
      Hansen
      agrees to use reasonable efforts to mark to the extent required by applicable
      law, statutes and regulations relating to patent marking all products that
      Hansen is aware are claimed by claims of the ISI Patents (or the labels or
      packaging therefor) that are made, used, imported, sold or distributed by or
      on
      behalf of Hansen and its distributors. ISI agrees to use reasonable efforts
      to
      mark to the extent required by applicable law, statutes and regulations relating
      to patent marking all products that ISI is aware are claimed by claims of the
      Hansen Patents (or the labels or packaging therefor) that are made, used,
      imported, sold or distributed by or on behalf of ISI and its
      distributors.

    

    
      
        
          [*]
            Confidential information in this Exhibit has been omitted and filed separately
            with the Commission. Confidential treatment has been requested with respect
            to
            the omitted portions.

          
          

        

        
          17

          
            

          

        

        
          
          

          CONFIDENTIAL

          CERTAIN
            INFORMATION HAS BEEN REDACTED

          CONFIDENTIAL
            TREATMENT REQUESTED

        

      

    

    

    6.4 Indemnification.

    

    (a) By
      Hansen.
      Hansen
      shall indemnify, defend and hold harmless ISI and its employees, officers,
      directors and agents (each, an “ISI Indemnified Party”) from and against any and
      all liability, loss, damage, cost, and expense (including reasonable attorneys’
fees) to any Third Party (collectively, a “Liability”) which the ISI Indemnified
      Party may incur, suffer or be required to pay resulting from any suit, action,
      claim or proceeding brought by the Third Party based on or arising out of:
      (i)
      the breach by Hansen of any representation, warranty, covenant or obligation
      contained in this Cross License, or (ii) the manufacture, promotion, sale or
      use
      of any product by Hansen or its licensee (other than ISI). Notwithstanding
      the
      foregoing, Hansen shall have no obligation under this Cross License to
      indemnify, defend or hold harmless any ISI Indemnified Party with respect to
      any
      Liabilities or claims, demands, costs or judgments to the extent that they
      result from: (1) the willful misconduct or negligent acts or omissions of ISI
      or
      any of their respective employees, officers, directors or agents, or (2) the
      manufacture, promotion, sale or use of any product by ISI or its licensee (other
      than Hansen).

    

    (b) By
      ISI.
      ISI
      shall indemnify, defend and hold harmless Hansen and its employees, officers,
      directors and agents (each, a “Hansen Indemnified Party”) from and against any
      and all liability, loss, damage, cost, and expense (including reasonable
      attorneys’ fees) to any Third Party (collectively, a “Liability”) which the
      Hansen Indemnified Party may incur, suffer or be required to pay resulting
      from
      any suit, action, claim or proceeding brought by the Third Party based on or
      arising out of: (i) the breach by ISI of any representation, warranty, covenant
      or obligation contained in this Cross License, or (ii) the manufacture,
      promotion, sale or use of any product by ISI or its licensee (other than
      Hansen). Notwithstanding the foregoing, ISI shall have no obligation under
      this
      Cross License to indemnify, defend or hold harmless any Hansen Indemnified
      Party
      with respect to any Liabilities or claims, demands, costs or judgments to the
      extent that they result from: (1) willful misconduct or negligent acts or
      omissions of Hansen, or any of its employees, officers, directors or agents,
      or
      (2) the manufacture, promotion, sale or use of any product by Hansen or its
      licensee (other than ISI). 

    

    (c) Procedures.
      The
      obligations of the indemnifying Party under Sections 6.4(a) and (b) are
      conditioned upon the delivery of written notice to the indemnifying Party of
      any
      potential Liability promptly after the indemnified party becomes aware of such
      potential Liability. The indemnifying Party shall have the right to assume
      the
      defense of any suit or claim related to the Liability if it has assumed
      responsibility for the suit or claim in writing; however, if in the reasonable
      judgment of the indemnified party, such suit or claim involves an issue or
      matter which could have a materially adverse effect on the business operations
      or assets of the indemnified Party, the indemnified Party may waive its rights
      to indemnity under this Cross License and control the defense or settlement
      thereof, but in no event shall any such waiver be construed as a waiver of
      any
      indemnification rights such Party may have at law or in equity. If the
      indemnifying Party defends the suit or claim, the indemnified Party may
      participate in (but not control) the defense thereof at its sole cost and
      expense. Neither Party may settle a claim or action related to a Liability
      without the consent of the other Party, if such settlement would impose any
      monetary obligation on the other Party or require the other Party to submit
      to
      an injunction or otherwise limit the other Party’s rights under this Cross
      License. Any payment made by a Party to settle any such claim or action shall
      be
      at its own cost and expense.

     

    
      
        
          [*]
            Confidential information in this Exhibit has been omitted and filed separately
            with the Commission. Confidential treatment has been requested with respect
            to
            the omitted portions.

          
          

        

        
          18

          
            

          

        

        
          
          

          CONFIDENTIAL

          CERTAIN
            INFORMATION HAS BEEN REDACTED

          CONFIDENTIAL
            TREATMENT REQUESTED

        

      

    

    
       

      6.5 Confidentiality.

    

    

    (a) The
      Parties recognize that, in connection with the performance of this Cross
      License, each Party (in such capacity, the “Disclosing
      Party”)
      may
      disclose “Confidential Information” (as defined below) to the other Party (the
“Receiving
      Party”).
      For
      purposes of this Cross License, “Confidential
      Information”
means
       proprietary or confidential information (whether owned by the Disclosing
      Party or a third party to whom the Disclosing Party owes a non-disclosure
      obligation) regarding the Disclosing Party’s business or technology that is
      disclosed to the Receiving Party and is marked as confidential at the time
      of
      disclosure to the Receiving Party, or if disclosed in oral form, is identified
      as confidential at the time of oral disclosure and reduced in writing or other
      tangible (including electronic) form including a prominent confidentiality
      notice and delivered to the Receiving Party within thirty (30) days of
      disclosure. “Confidential Information” shall not
      include
      the Cross License, the terms and conditions thereof and the transactions
      contemplated hereby and thereby (which information shall be governed by Section
      6.6 of this Cross License) and information that the Receiving Party can
      demonstrate: 

    

    (i)    
       was
      known
      to the Receiving Party free of any obligation of confidence at the time of
      the
      disclosure by the Disclosing Party;

    

    (ii)    
       has
      become publicly known through no wrongful act of the Receiving Party;

    

    (iii)    
       has
      rightfully been received by the Receiving Party from a third party;

    

      
        
          [*]
            Confidential information in this Exhibit has been omitted and filed separately
            with the Commission. Confidential treatment has been requested with respect
            to
            the omitted portions.

          
          

        

        
          19

          
            

          

        

        
          
          

          CONFIDENTIAL

          CERTAIN
            INFORMATION HAS BEEN REDACTED

          CONFIDENTIAL
            TREATMENT REQUESTED

        

      

    

    

    (iv)    
       was
      communicated by the Disclosing Party to an unaffiliated third party free of
      any
      obligation of confidence; or

    

    (v)     
       has
      been
      independently developed by the Receiving Party without use or reference to
      any
      Confidential Information of the Disclosing Party. 

     

    (b) The
      Receiving Party agrees (x) not
      to use any such Confidential Information other than as permitted under this
      Cross License (y) not
      to disclose any such Confidential Information, except (1) to its employees
      who are reasonably required to have the Confidential Information in connection
      herewith or with any of the other Transaction Documents, (2) to its agents,
      representatives, attorneys and other advisers that have a need to know such
      Confidential Information, (3) pursuant to, and to the extent of, a request
      or order by a Governmental Authority, or (4) or to the extent such disclosure
      is
      reasonably necessary in filing or prosecuting patent, copyright and trademark
      applications, prosecuting or defending litigation, complying with applicable
      governmental regulations, obtaining regulatory approvals, marketing Products,
      or
      otherwise required by law; provided,
      however,
      that if
      a Receiving Party is required by law or regulation to make any such disclosure
      of a Disclosing Party’s Confidential Information it will give reasonable advance
      notice to the Disclosing Party of such disclosure requirement and, except to
      the
      extent inappropriate in the case of patent applications, will use its reasonable
      efforts to secure confidential treatment of such Confidential Information
      required to be disclosed. The Receiving Party agrees to take all reasonable
      measures to protect the secrecy and confidentiality of, and avoid disclosure
      or
      unauthorized use of, the Disclosing Party’s Confidential
      Information.

     

    (c) Each
      Party acknowledges and agrees that (i) its obligations under this
Section 6.5
      are
      necessary and reasonable to protect the other Party and its business, and
      (ii) any violation of these provisions could cause irreparable injury to
      the other Party for which money damages would be inadequate, and (iii) as a
      result the other Party shall be entitled to obtain injunctive relief against
      the
      threatened or pending breach of the provisions of this Section 6.5
      without
      the necessity of proving actual damages. The Parties agree that the remedies
      set
      forth in this Section 6.5
      are in
      addition to and in no way preclude any other remedies or actions that may be
      available at law or under this Cross License.

     

    6.6 Confidentiality
      of Cross License; Publicity.
      

     

    (a) Each
      Party agrees that the existence of the Cross License, the terms and conditions
      thereof and the transactions contemplated hereby and thereby shall be treated
      as
      confidential information and that no reference thereto shall be made without
      the
      prior written consent of the other Party (which consent shall not be
      unreasonably withheld or delayed) except (a) as required by Applicable Law
      including, without limitation, by the SEC and the rules and regulations of
      any
      applicable securities exchange or automated quotation system, or to the extent
      such disclosure is reasonably necessary in prosecuting or defending litigation;
      provided,
      however,
      that if
      a Party is required by law or regulation to make any such disclosure of such
      information it will give reasonable advance notice to the other Party of such
      disclosure requirement and will use its reasonable efforts to secure
      confidential treatment of such information required to be disclosed, (b) to
      such Party’s accountants, attorneys and other professional advisers, banks,
      existing or potential financing sources, including to potential investors,
      provided
      that
      such Persons undertake in writing (or are otherwise bound by rules of
      professional conduct) to keep such information strictly confidential,
      (c) in connection with the enforcement of this Cross License, (d) in
      connection with an actual or proposed Acquisition or Asset Transfer of a Party
      or the acquisition or proposed acquisition of stock or assets by a Party of
      any
      third party or the merger with or into any third party whether or not such
      transaction constitutes an Acquisition, provided
      that
      such Persons undertake in writing to keep such information strictly confidential
      (e) to a potential transferee of all or part of such Party’s Securities in
      a Transfer made in accordance with this Cross License, provided
      that
      such transferee undertakes in writing to keep such information strictly
      confidential, or (f) pursuant to a press release approved by the other Party.
      

    

      
        
          [*]
            Confidential information in this Exhibit has been omitted and filed separately
            with the Commission. Confidential treatment has been requested with respect
            to
            the omitted portions.

          
          

        

        
          20

          
            

          

        

        
          
          

          CONFIDENTIAL

          CERTAIN
            INFORMATION HAS BEEN REDACTED

          CONFIDENTIAL
            TREATMENT REQUESTED

        

      

    

    
       

      (b) The
        Parties will consult with each other, in advance, with regard to the terms
        of
        all proposed press releases, public announcements and other public statements
        with respect to the transactions contemplated hereby. Any Party intending
        to
        disclose the terms of this Cross License shall provide the nondisclosing
        Party
        an opportunity to review and comment on the intended disclosure in reasonably
        sufficient time (such time period to depend on the urgency of the intended
        disclosure) prior to public release, and shall provide the other Party with
        a
        written copy thereof, in order to allow such other Party to comment upon
        such
        disclosure; provided however, such notice and opportunity to review shall
        not be
        required for a disclosure which is substantially in a form previously approved
        where the underlying facts disclosed in that previously approved disclosure
        are
        still true, and where the circumstances surrounding the disclosure have not
        changed.

    

     

    (c) With
      respect to complying with the disclosure requirements of the SEC or any
      securities exchange or automated quotation system in connection with any
      required filing of this Cross License, the filing Party shall seek confidential
      treatment of this Cross License from the SEC or securities exchange or automated
      quotation system and shall provide the other Party with at least forty-eight
      (48) hours to review and comment on any such proposed filing. The filing Party
      shall use reasonable efforts to incorporate the non-filing Party’s comments to
      such confidential treatment request.

    

    
      	 	
              7.

            	
              WARRANTIES;
                DISCLAIMERS.

            

    

    

    7.1 No
      Warranty.
      Nothing
      contained in this Cross License shall be construed as:

    

      
        
          [*]
            Confidential information in this Exhibit has been omitted and filed separately
            with the Commission. Confidential treatment has been requested with respect
            to
            the omitted portions.

          
          

        

        
          21

          
            

          

        

        
          
          

          CONFIDENTIAL

          CERTAIN
            INFORMATION HAS BEEN REDACTED

          CONFIDENTIAL
            TREATMENT REQUESTED

        

      

    

    

    (a) a
      warranty or representation by either Party as to the validity, enforceability
      or
      scope of any Hansen Patents or ISI Patents;

    

    (b) an
      agreement by either Party to bring or prosecute actions or suits against third
      parties for infringement, or conferring any right to the other Party to bring
      or
      prosecute actions or suits against third parties for infringement. It is
      specifically agreed between the Parties that the existence of such alleged
      infringement by any third party, if any, shall not be a ground for the refusal
      to make or a ground for the request for the reduction of the payments to be
      made
      by Hansen under this Cross License; 

    

    (c) conferring
      any right to either Party to use in advertising, publicity, or otherwise, any
      trademark, trade name or names of the other Party, or any contraction,
      abbreviation or simulation thereof;

    

    (d) conferring
      on either Party, by implication, estoppel or otherwise, any licenses or other
      rights under any patent, copyright, trade secrets or trademarks of the other
      Party, except the licenses and rights expressly granted hereunder;

    

    (e) an
      obligation of a Party to furnish to the other Party any technical information
      or
      know-how, including ISI Know-How or Hansen Know-How; 

    

    (f) a
      warranty or representation that the exercise of any of the rights granted under
      this Cross License will be free from infringement of or will not violate any
      intellectual property rights or other proprietary rights of any third party;
      or

    

    (g) an
      obligation on either Party to prosecute, maintain or obtain any patents or
      utility models or applications therefor. 

    

    7.2 WARRANTY
      DISCLAIMER.
      EXCEPT
      AS EXPRESSLY PROVIDED IN SECTION 7.3, NEITHER PARTY MAKES ANY REPRESENTATIONS
      OR
      WARRANTIES OF ANY KIND WITH RESPECT TO, AND HEREBY EXPRESSLY DISCLAIMS ALL
      OTHER
      WARRANTIES AS TO, THE PATENTS OR KNOW-HOW SUCH PARTY LICENSES TO THE OTHER
      PARTY
      UNDER THIS CROSS LICENSE OR ANY OTHER SUBJECT MATTER OF THIS CROSS LICENSE.
      BOTH
      PARTIES SPECIFICALLY DISCLAIM ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
      FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT WITH RESPECT TO THE ISI PATENTS,
      THE HANSEN PATENTS OR ANY OTHER SUBJECT MATTER OF THIS CROSS LICENSE.

    

    7.3 Limited
      Warranties.
      

    

      
        
          [*]
            Confidential information in this Exhibit has been omitted and filed separately
            with the Commission. Confidential treatment has been requested with respect
            to
            the omitted portions.

          
          

        

        
          22

          
            

          

        

        
          
          

          CONFIDENTIAL

          CERTAIN
            INFORMATION HAS BEEN REDACTED

          CONFIDENTIAL
            TREATMENT REQUESTED

        

      

    

    

    (a) Each
      Party represents and warrants to the other Party that: (i) it is duly
      organized and validly existing under the laws of its jurisdiction of
      incorporation or formation, and has full corporate or other power and authority
      to enter into this Cross License and to carry out the provisions hereof;
      (ii) it is duly authorized to execute and deliver this Cross License and to
      perform its obligations hereunder, and the person or persons executing this
      Cross License on its behalf has been duly authorized to do so by all requisite
      corporate or partnership action; and (iii) this Cross License is legally
      binding upon it, enforceable in accordance with its terms, and does not conflict
      with any agreement, instrument or understanding, oral or written, to which
      it is
      a Party or by which it may be bound, nor violate any material law or regulation
      of any court, governmental body or administrative or other agency having
      jurisdiction over it. 

    

    (b) Hansen
      represents and warrants to ISI that: (i) Hansen has disclosed in writing to
      ISI
      each patent or patent application (identifying the patent numbers or application
      serial numbers and countries of prosecution) that is licensed to Hansen by
      a
      third party, and the specific terms of any and all payment amounts that Hansen
      would be obligated pay to such third party licensor if Hansen sublicensed such
      patent or patent application to ISI as a Hansen Patent under this Cross License;
      (ii) Hansen has disclosed in writing to ISI each patent or patent application
      (identifying the patent numbers or application serial numbers and countries
      of
      prosecution) that is licensed to Hansen by a third party and for which Hansen
      does not have the right to grant ISI sublicenses under the terms of this Cross
      License. 

    

    (c) ISI
      represents and warrants to Hansen that: (i) ISI has disclosed in writing to
      Hansen each patent or patent application (identifying the patent numbers or
      application serial numbers and countries of prosecution) that is licensed to
      ISI
      by a third party, and the specific terms of any and all payment amounts that
      ISI
      would be obligated pay to such third party licensor if ISI sublicensed such
      patent or patent application to Hansen as an ISI Patent under this Cross
      License; (ii) ISI has disclosed in writing to Hansen each patent or patent
      application (identifying the patent numbers or application serial numbers and
      countries of prosecution) that is licensed to ISI by a third party and for
      which
      ISI does not have the right to grant Hansen sublicenses under the terms of
      this
      Cross License. 

    

    
      	 	
              8.

            	
              LIMITATION
                OF LIABILITY

            

    

    

    NOTWITHSTANDING
      ANYTHING ELSE IN THIS CROSS LICENSE OR OTHERWISE, NEITHER PARTY SHALL BE LIABLE
      TO THE OTHER PARTY OR TO ANY OTHER PERSON OR ENTITY WITH RESPECT TO ANY SUBJECT
      MATTER OF THIS CROSS LICENSE, UNDER ANY CONTRACT, NEGLIGENCE, STRICT LIABILITY
      OR OTHER LEGAL OR EQUITABLE THEORY, FOR ANY (A) INCIDENTAL, SPECIAL,
      PUNITIVE (OTHER THAN STATUTORY DAMAGES AVAILABLE FOR WILLFUL INFRINGEMENT)
      CONSEQUENTIAL OR INDIRECT DAMAGES, (B) DAMAGES RESULTING FROM LOSS OF SALE,
      BUSINESS, PROFITS OR GOODWILL, (C) COST OF PROCUREMENT OF SUBSTITUTE GOODS
      OR
      TECHNOLOGY, EVEN IF THE REMEDIES PROVIDED FOR IN THIS CROSS LICENSE FAIL OF
      THEIR ESSENTIAL PURPOSE AND EVEN IF EITHER PARTY HAS BEEN ADVISED OF THE
      POSSIBILITY OR PROBABILITY OF SUCH DAMAGES.

    

      
        
          [*]
            Confidential information in this Exhibit has been omitted and filed separately
            with the Commission. Confidential treatment has been requested with respect
            to
            the omitted portions.

          
          

        

        
          23

          
            

          

        

        
          
          

          CONFIDENTIAL

          CERTAIN
            INFORMATION HAS BEEN REDACTED

          CONFIDENTIAL
            TREATMENT REQUESTED

        

      

    

    

    
      	 	
              9.

            	
              MISCELLANEOUS

            

    

    

    9.1 Assignment.
      This
      Cross License and the rights and obligations hereunder may not be transferred
      or
      assigned by either party without the prior written consent of the other party;
      provided that, either party may, without the other party’s prior written
      consent, assign or transfer this Cross License and its rights and obligations
      hereunder in connection with an Acquisition or Asset Transfer. Subject to the
      foregoing, this Cross License shall be binding on, inure to the benefit of,
      and
      be enforceable by the Parties and their respective heirs, successors and
      permitted assigns.

    

    9.2 Amendment
      and Waiver.
      Except
      as otherwise expressly provided herein, any provision of this Cross License
      may
      be amended and the observance of any provision of this Cross License may be
      waived (either generally or in any particular instance and either retroactively
      or prospectively) only with the written consent of the parties. The failure
      of
      either party to enforce its rights under this Cross License at any time for
      any
      period shall not be construed as a waiver of rights.

    

    9.3 Governing
      Law and Legal Actions.
      This
      Cross License shall be governed by and construed under the laws of California
      without regard to the conflicts of law provisions thereof. The
      state
      and federal courts of the Northern District of California shall have exclusive
      jurisdiction for disputes related to this Cross License, except as provided
      in
      Section 5.7, and the parties hereby consent to the personal jurisdiction of
      the
      court.

    

    9.4 Headings.
      Headings and captions are for convenience only and are not to be used in the
      interpretation of this Cross License.

    

    9.5 Notices.
      Any
      notice or other communication required or permitted to be made or given to
      either party under this Cross License shall be deemed sufficiently made or
      given
      on the date of delivery if delivered in person or by overnight commercial
      courier service with tracking capabilities with costs prepaid, or five (5)
      days
      after the date of mailing if sent by certified first class mail, return receipt
      requested and postage prepaid, to the address of the parties (and addressed
      to
      the representative) set forth below or such other address (or representative)
      as
      may be given from time to time under the terms of this notice
      provision:

    

      
        
          [*]
            Confidential information in this Exhibit has been omitted and filed separately
            with the Commission. Confidential treatment has been requested with respect
            to
            the omitted portions.

          
          

        

        
          24

          
            

          

        

        
          
          

          CONFIDENTIAL

          CERTAIN
            INFORMATION HAS BEEN REDACTED

          CONFIDENTIAL
            TREATMENT REQUESTED

        

      

    

     

    
      	
              If
                to ISI:

            	
              If
                to Hansen:

            
	
              950
                Kifer Road,

            	
              380
                North Bernardo Avenue

            
	
              Sunnyvale,
                California 94086

            	
              Mountain
                View, California 94043 

            
	
              Attention:
                General Counsel

            	
              Attention:
                Vice President of Intellectual 

            
	
              Telephone:
                (408) 523-2100

            	
              Property
                and Legal Affairs

            
	
              Facsimile:
                (408) 523-1390

            	
              Telephone:
                (650) 406-5800

            
	 	
              Facsimile:
                (650) 404-5901

            
	 	 
	
              With
                a copy (which shall not constitute notice) to:

            	
              With
                a copy (which shall not constitute notice) to:

            
	 	 
	
              Wilson
                Sonsini Goodrich & Rosati

            	
              Cooley
                Godward LLP

            
	
              650
                Page Mill Road

            	
              Five
                Palo Alto Square

            
	
              Palo
                Alto, California 94304-1050

            	
              3000
                El Camino Real

            
	
              Attention:
                Casey McGlynn

            	
              Palo
                Alto, California 94306

            
	
              Telephone:
                (650) 493-9300

            	
              Attention:
                Barclay Kamb

            
	
              Facsimile:
                (650) 493-6811

            	
              Telephone:
                (650) 843-5000

            
	 	
              Facsimile:
                (650) 849-7400

            

    

    

    9.6 Severability.
      If any
      provision of this Cross License is held to be illegal or unenforceable, that
      provision shall be limited or eliminated to the minimum extent necessary so
      that
      this Cross License shall otherwise remain in full force and effect and
      enforceable.

    

    9.7 Relationship
      of Parties.
      Each
      party acknowledges and agrees that the other party is an independent contractor
      in the performance of each and every part of this Cross License and is solely
      responsible for all of its employees, contractors and agents and its labor
      costs
      and expenses arising in connection therewith. The parties are not partners,
      joint venturers, franchiser-franchisee or otherwise affiliated, and neither
      has
      any right or authority to make any statements, representations or commitments
      of
      any kind, or to take any action, which shall be binding on the other party,
      without the prior written consent of the other party. Without limiting the
      foregoing, the parties agree that this Cross License is not intended to create
      a
      franchise within the meaning of any applicable statute.

    

    9.8 Counterparts.
      This
      Cross License may be executed in counterparts, each of which shall be deemed
      an
      original but all of which together shall constitute one and the same instrument.
      This Cross License may be executed by facsimile with the original signatures
      following promptly by one of the methods of delivery or mailing set forth in
      Section 9.5 above.

    

    9.9 Entire
      Agreement.
      The
      terms and conditions contained in this Cross License, the Share Transfer
      Agreement and Hansen Investor Rights Agreement constitute the entire agreement
      between the parties and supersede all previous agreements and understandings,
      whether oral or written, between the parties with respect to the subject matter
      hereof. 

    

    ******

    

      
        
          [*]
            Confidential information in this Exhibit has been omitted and filed separately
            with the Commission. Confidential treatment has been requested with respect
            to
            the omitted portions.

          
          

        

        
          25

          
            

          

        

        
          
          

          CONFIDENTIAL

          CERTAIN
            INFORMATION HAS BEEN REDACTED

          CONFIDENTIAL
            TREATMENT REQUESTED

        

      

    

     

    IN
      WITNESS WHEREOF the parties hereto have executed this Cross License as of the
      Effective Date.

    

    
      	
              INTUITIVE
                SURGICAL, INC.

            	 	
              HANSEN
                MEDICAL, INC.

            
	 	 	 	 	 
	
              By:

            	
              /s/
                Lonnie M. Smith

            	 	
              By:

            	
              /s/
                Frederic H. Moll

            
	
              Title:

            	
              President
                and CEO

            	 	
              Title:

            	
              CEO

            
	
              Date:

            	
              September
                1, 2005

            	 	
              Date:

            	
              September
                1, 2005

            

    

    

      
        
           

          
          

        

        
          26

          
            

          

        

        
          
          

          CONFIDENTIAL

          CERTAIN
            INFORMATION HAS BEEN REDACTED

          CONFIDENTIAL
            TREATMENT REQUESTED

        

      

    

     

    EXHIBIT
      A

    Share
      Transfer Agreement

    

    

      
        
           

          
          

        

        
          1

          
            

          

        

        
          
          

          CONFIDENTIAL

          CERTAIN
            INFORMATION HAS BEEN REDACTED

          CONFIDENTIAL
            TREATMENT REQUESTED

        

      

    

     

    EXHIBIT
      B

    Investors
      Rights Agreement

     

    

      
        
           

          
          

        

        
          1

          
            

          

        

        
          
          

          CONFIDENTIAL

          CERTAIN
            INFORMATION HAS BEEN REDACTED

          CONFIDENTIAL
            TREATMENT REQUESTED

        

      

    

     

    EXHIBIT
      C

    New
      Product Procedure

     

    

    1.     If
      a
      Party (the “Initiating Party”) initiates pursuant to Section 5.7 of the
      Agreement the procedure under this Exhibit C as to a new product of such
      Initiating Party that it plans to sell for a use outside its licensed field
      (the
“Subject Product”), the Parties shall then proceed under the provisions of this
      Exhibit C, cooperatively and in good faith. Such Initiating Party shall first
      provide a demonstration of the Subject Product to the other Party (the
“Responding Party”) and its legal representatives, under an appropriate
      confidential disclosure agreement entered into by the Parties (and any such
      representatives). 

    

    2.     Such
      Responding Party then has up to [*] business days to provide to the Initiating
      Party a list of written questions regarding the construction and operation
      of
      the Subject Product, and the Initiating Party shall provide its answers to
      such
      questions, in confidence under the confidential disclosure agreement, within
      [*]
      business days from its receipt of questions. 

    

    3.     Within
      [*] business days after timely receipt of the Initiating Party’s answers to the
      written questions submitted under paragraph 2 above, or if no answers were
      requested or timely received, then within [*] days after the demonstration,
      the
      Responding Party shall either: (a) provide the Initiating Party with written
      notice (a “Non-Infringement Notice”) that such Responding Party concludes that
      the Subject Product would not infringe any patents owned or controlled by such
      Responding Party, or any claims or any claims in any patent applications owned
      or controlled by such Responding Party were such applications to issue as
      patents; or (b) provide the Initiating Party with written notice (an
“Infringement Notice”) that such Responding Party believes that the Subject
      Product would infringe one or more of the patents owned or controlled by such
      Responding Party, or any claims or any claims in any patent applications owned
      or controlled by such Responding Party were such applications to issue as
      patents, which notice shall include details of such allegation and copies of
      the
      asserted patents or patent applications and shall provide the detailed analysis
      for the basis for such Party’s belief that the Subject Product infringes that
      indicated patents or would infringe the indicated patent applications (if such
      applications issued).

    

    4.     If
      the
      Responding Party provides an Infringement Notice as to the Subject Product,
      then
      the Parties shall meet promptly after such notice is received, and the Parties
      shall discuss cooperatively and in good faith the infringement issue covered
      by
      the Infringement Issue for up to [*] business days and shall amicably and in
      good faith resolve the infringement issue by [*]. 

    

    5.     If
      the
      Parties are unable to reach agreement after such [*] business day period, then
      the Parties shall proceed under the provisions of Section 5.7(b) to resolve
      the
      question of whether the Subject Product infringes one or more claims of the
      identified patents, including addressing and resolving any defenses that the
      Initiating Party may have to the assertion of infringement (such as invalidity
      or unenforceability). 

    

      
        
          [*]
            Confidential information in this Exhibit has been omitted and filed separately
            with the Commission. Confidential treatment has been requested with respect
            to
            the omitted portions.

          
          

        

        
          
          

          
            

          

        

        
          
          

          CONFIDENTIAL

          CERTAIN
            INFORMATION HAS BEEN REDACTED

          CONFIDENTIAL
            TREATMENT REQUESTED

        

      

    

    

    7.     The
      arbitrators may impose monetary sanctions (payable to the Responding Party)
      if
      the Initiating Party does not provide all relevant information relating to
      the
      Subject Product requested by the Responding Party or the arbitrators (including
      demonstrations of the product), or otherwise cooperate fully with them.
      Similarly, the arbitrators may impose monetary sanctions (payable to the
      Initiating Party) if the Responding Party does not provide all relevant
      information relating to the subject patents requested by the Initiating Party
      or
      the arbitrators, or otherwise cooperate fully with them. Such arbitration shall
      determine whether the Subject Product would infringe the Responding Party’s
      patents that are the subject of the Infringement Notice. The arbitrators will
      set forth in writing their decision regarding infringement or non-infringement
      of such patents by the Subject Product, including the specific patents and
      claims analyzed by the arbitrators and an explanation of the bases for such
      decision. Determinations made by the arbitrators are binding upon the Parties,
      and cannot be appealed or litigated in federal court. Notwithstanding the
      forgoing, if the arbitrators determine that the Subject Product infringes the
      Responding Party’s patents and the Initiating Party does not cease the
      infringement within [*] days after the arbitrators’ decision or in the future
      sells the Subject Product, then the Responding Party may seek damages and other
      remedies by litigation in court in accordance with Section 9.3, and to have
      the
      court determine if the Initiating Party is selling the Subject Product in
      violation of the arbitrators’ determination of infringement. The Responding
      Party may submit the arbitrators’ decision in such litigation. If such
      litigation results in a judgment that the Initiating Party is selling the
      Subject Product in violation of the arbitrators’ determination of infringement
      from which no appeal can be or is taken, then the Initiating Party will have
      committed a “Material Breach,” for which the Responding Party may terminate this
      Agreement within 30 days by written notice to the Initiating Party.

    

    8.     In
      the
      case of an arbitration under paragraph 7 above, the Responding Party shall
      pay
      all arbitration expenses for the aspects of the arbitration that relate to
      the
      allegations of infringement, the Initiating Party shall pay all arbitration
      expenses for the aspects of the arbitration that relate to any of the Initiating
      Party’s asserted defenses, and each Party shall pay its own legal expenses
      including deposition expenses and other discovery expenses related to these
      proceedings. If the arbitration results in a determination that the Initiating
      Party infringes the asserted patents, then the Responding Party shall be
      entitled to reimbursement the arbitration expenses that it paid. If the
      arbitration results in a determination that the Initiating Party does not
      infringe the asserted patents (including because of defenses of the Initiating
      Party or simply due to non-infringement), then the Initiating Party shall be
      entitled to reimbursement the arbitration expenses that it paid.

     

    

    [*]
      Confidential information in this Exhibit has been omitted and filed separately
      with the Commission. Confidential treatment has been requested with respect
      to
      the omitted portions.

     

    -2-FIRST HORIZON ASSET SECURITIES INC.

                                    Depositor

                       FIRST HORIZON HOME LOAN CORPORATION

                                 Master Servicer

                                       and

                              THE BANK OF NEW YORK

                                     Trustee

              -----------------------------------------------------

                         POOLING AND SERVICING AGREEMENT

                           Dated as of August 1, 2005

              -----------------------------------------------------

               FIRST HORIZON MORTGAGE PASS-THROUGH TRUST 2005-AR4

               MORTGAGE PASS-THROUGH CERTIFICATES, SERIES 2005-AR4
<PAGE>

                                TABLE OF CONTENTS
<TABLE>
<CAPTION>
<S>                                                                                                              <C>
ARTICLE I DEFINITIONS.............................................................................................5

ARTICLE II CONVEYANCE OF MORTGAGE LOANS;  REPRESENTATIONS AND WARRANTIES.........................................34
   SECTION 2.1 Conveyance of Mortgage Loans......................................................................34
   SECTION 2.2 Acceptance by Trustee of the Mortgage Loans.......................................................38
   SECTION 2.3 Representations and Warranties of the Master Servicer;  Covenants of the Seller...................40
   SECTION 2.4 Representations and Warranties of the Depositor as to the Mortgage Loans..........................42
   SECTION 2.5 Delivery of Opinion of Counsel in Connection with Substitutions...................................43
   SECTION 2.6 Execution and Delivery of Certificates............................................................43
   SECTION 2.7 REMIC Matters.....................................................................................43
   SECTION 2.8 Covenants of the Master Servicer..................................................................47

ARTICLE III ADMINISTRATION AND SERVICING OF MORTGAGE LOANS.......................................................47
   SECTION 3.1 Master Servicer to Service Mortgage Loans.........................................................47
   SECTION 3.2 Subservicing; Enforcement of the Obligations of Servicers.........................................48
   SECTION 3.3 Rights of the Depositor and the Trustee in Respect of the Master Servicer.........................49
   SECTION 3.4 Trustee to Act as Master Servicer.................................................................49
   SECTION 3.5 Collection of Mortgage Loan Payments; Certificate Account; Distribution Account...................50
   SECTION 3.6 Collection of Taxes, Assessments and Similar Items; Escrow Accounts...............................53
   SECTION 3.7 Access to Certain Documentation and Information Regarding the Mortgage Loans......................54
   SECTION 3.8 Permitted Withdrawals from the Certificate Account and Distribution Account.......................54
   SECTION 3.9 Maintenance of Hazard Insurance; Maintenance of Primary Insurance Policies........................56
   SECTION 3.10 Enforcement of Due-on-Sale Clauses; Assumption Agreements........................................57
   SECTION 3.11 Realization Upon Defaulted Mortgage Loans; Repurchase of Certain Mortgage Loans..................59
   SECTION 3.12 Trustee to Cooperate; Release of Mortgage Files..................................................61
   SECTION 3.13 Documents Records and Funds in Possession of Master Servicer to be Held for the Trustee..........62
   SECTION 3.14 Master Servicing Compensation....................................................................62
   SECTION 3.15 Access to Certain Documentation..................................................................63
   SECTION 3.16 Annual Statement as to Compliance................................................................63
   SECTION 3.17 Annual Independent Public Accountants' Servicing Statement; Financial Statements.................63
   SECTION 3.18 Errors and Omissions Insurance; Fidelity Bonds...................................................64
   SECTION 3.19 Notification of Adjustments......................................................................64

ARTICLE IV DISTRIBUTIONS AND ADVANCES BY THE MASTER SERVICER.....................................................65
   SECTION 4.1 Advances..........................................................................................65
   SECTION 4.2 Priorities of Distribution........................................................................65
</TABLE>

                                       i
<PAGE>

<TABLE>
<CAPTION>
  <S>                                                                                                          <C>
   SECTION 4.3 Method of Distribution............................................................................70
   SECTION 4.4 Allocation of Losses..............................................................................71
   SECTION 4.5 [RESERVED]........................................................................................72
   SECTION 4.6 Monthly Statements to Certificateholders..........................................................72

ARTICLE V THE CERTIFICATES.......................................................................................74
   SECTION 5.1 The Certificates..................................................................................74
   SECTION 5.2 Certificate Register; Registration of Transfer and Exchange of Certificates.......................75
   SECTION 5.3 Mutilated, Destroyed, Lost or Stolen Certificates.................................................80
   SECTION 5.4 Persons Deemed Owners.............................................................................80
   SECTION 5.5 Access to List of Certificateholders' Names and Addresses.........................................81
   SECTION 5.6 Maintenance of Office or Agency...................................................................81

ARTICLE VI THE DEPOSITOR AND THE MASTER SERVICER.................................................................81
   SECTION 6.1 Respective Liabilities of the Depositor and the Master Servicer...................................81
   SECTION 6.2 Merger or Consolidation of the Depositor or the Master Servicer...................................81
   SECTION 6.3 Limitation on Liability of the Depositor, the Master Servicer and Others..........................82
   SECTION 6.4 Limitation on Resignation of Master Servicer......................................................82

ARTICLE VII DEFAULT..............................................................................................83
   SECTION 7.1 Events of Default.................................................................................83
   SECTION 7.2 Trustee to Act; Appointment of Successor..........................................................85
   SECTION 7.3 Notification to Certificateholders................................................................86

ARTICLE VIII CONCERNING THE TRUSTEE..............................................................................86
   SECTION 8.1 Duties of Trustee.................................................................................86
   SECTION 8.2 Certain Matters Affecting the Trustee.............................................................88
   SECTION 8.3 Trustee Not Liable for Certificates or Mortgage Loans.............................................90
   SECTION 8.4 Trustee May Own Certificates......................................................................90
   SECTION 8.5 Trustee's Fees and Expenses.......................................................................90
   SECTION 8.6 Eligibility Requirements for Trustee..............................................................91
   SECTION 8.7 Resignation and Removal of Trustee................................................................91
   SECTION 8.8 Successor Trustee.................................................................................92
   SECTION 8.9 Merger or Consolidation of Trustee................................................................92
   SECTION 8.10 Appointment of Co-Trustee or Separate Trustee....................................................92
   SECTION 8.11 Tax Matters......................................................................................94
   SECTION 8.12 Periodic Filings.................................................................................96

ARTICLE IX TERMINATION...........................................................................................96
   SECTION 9.1 Termination upon Liquidation or Purchase of all Mortgage Loans....................................96
   SECTION 9.2 Final Distribution on the Certificates............................................................97
   SECTION 9.3 Additional Termination Requirements...............................................................98

ARTICLE X [RESERVED].............................................................................................99

ARTICLE XI MISCELLANEOUS PROVISIONS..............................................................................99
   SECTION 11.1 Amendment........................................................................................99
</TABLE>

                                       ii
<PAGE>

<TABLE>
<CAPTION>
   <S>     <C> <C>                                                                                             <C>
   SECTION 11.2 Recordation of Agreement; Counterparts..........................................................100
   SECTION 11.3 Governing Law...................................................................................100
   SECTION 11.4 Intention of Parties............................................................................101
   SECTION 11.5 Notices.........................................................................................101
   SECTION 11.6 Severability of Provisions......................................................................102
   SECTION 11.7 Assignment......................................................................................102
   SECTION 11.8 Limitation on Rights of Certificateholders......................................................103
   SECTION 11.9 Inspection and Audit Rights.....................................................................103
   SECTION 11.10 Certificates Nonassessable and Fully Paid......................................................104
   SECTION 11.11 Limitations on Actions; No Proceedings.........................................................104
   SECTION 11.12 Acknowledgment of Seller.......................................................................104

                                    SCHEDULES

Schedule I:           Mortgage Loan Schedule                                                                 S-I-1
Schedule II:          Representations and Warranties of the Master Servicer                                 S-II-1
Schedule III:         Form of Monthly Master Servicer Report                                               S-III-1

                                    EXHIBITS

Exhibit A:            Form of Senior Certificate                                                                A-1
Exhibit B:            Form of Subordinated Certificate                                                          B-1
Exhibit C:            Form of Residual Certificate                                                              C-1
Exhibit D:            Form of Reverse of Certificates                                                           D-1
Exhibit E:            Form of Initial Certification                                                             E-1
Exhibit F:            Form of Delay Delivery Certification                                                      F-1
Exhibit G:            Form of Subsequent Certification of Custodian                                             G-1
Exhibit H:            Transfer Affidavit                                                                        H-1
Exhibit I:            Form of Transferor Certificate                                                            I-1
Exhibit J:            Form of Investment Letter [Non-Rule 144A]                                                 J-1
Exhibit K:            Form of Rule 144A Letter                                                                  K-1
Exhibit L:            Request for Release (for Trustee)                                                         L-1
Exhibit M:            Request for Release (Mortgage Loan)                                                       M-1
</TABLE>

                                      iii
<PAGE>

      THIS POOLING AND SERVICING  AGREEMENT,  dated as of August 1, 2005,  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").

                                 WITNESSETH THAT

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

                              PRELIMINARY STATEMENT

      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 two  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 II-A-R  Certificates  will  represent the residual  interests in the Lower
REMIC and Upper  REMIC,  as  described  in Section  2.7.  The  "latest  possible
maturity  date" for federal  income tax purposes of all REMIC regular  interests
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):

                  [Remainder of Page Intentionally Left Blank]

                                       1
<PAGE>
<TABLE>
<CAPTION>
                              Initial Class             Initial                                 Integral Multiples
   Class Designation       Certificate Balance     Pass Through Rate    Minimum Denomination    in Excess Minimum
------------------------- ----------------------- --------------------- ---------------------- ---------------------
<S>       <C>             <C>                          <C>    <C>       <C>                    <C>
Class I-A-1               $     29,815,000.00          5.1209%(1)       $          25,000      $           1,000
Class I-A-2               $      1,193,000.00          5.1209%(1)       $          25,000      $           1,000
Class II-A-1              $    216,122,000.00          5.3514%(2)       $          25,000      $           1,000
Class II-A-R              $            100.00          5.3514%(2)       $             100      $             N/A
Class III-A-1             $     54,803,000.00          5.4029%(3)       $          25,000      $           1,000
Class IV-A-1              $     54,608,000.00          5.4755%(4)       $          25,000      $           1,000
Class IV-A-2              $     50,000,000.00          5.4755%(4)       $          25,000      $           1,000
Class IV-A-3              $      2,000,000.00          5.4755%(4)       $          25,000      $           1,000
Class B-1                 $      7,873,000.00          5.3732%(5)       $         100,000      $           1,000
Class B-2                 $      3,192,000.00          5.3732%(5)       $         100,000      $           1,000
Class B-3                 $      2,127,000.00          5.3732%(5)       $         100,000      $           1,000
Class B-4                 $      1,703,000.00          5.3732%(5)       $         100,000      $           1,000
Class B-5                 $      1,277,000.00          5.3732%(5)       $         100,000      $           1,000
Class B-6                 $        851,609.53          5.3732%(5)       $         100,000      $           1,000
</TABLE>

(1) The Pass-Through  Rates for the Class I-A-1 and Class I-A-2 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.

(2) The  Pass-Through  Rates for the Class II-A-1 and Class II-A-R  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.

(3)  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.

(4) The Pass-Through  Rates for the Class IV-A-1,  Class IV-A-2 and Class IV-A-3
Certificates  for each  subsequent  Distribution  Date will  equal the  Weighted
Average Adjusted Net Mortgage Rate for Pool IV, 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.

(5) 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 all of the Mortgage Pools, 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.

                                       2
<PAGE>

<TABLE>
<CAPTION>

<S>                                       <C>
Accretion Directed Certificates.......     None.
Accrual Certificates..................     None.
Accrual Components....................     None.
Book-Entry Certificates...............     All Classes of Certificates other than the Physical Certificates.
Certificate Group.....................     With respect to Pool I, the Group I Senior Certificates; with respect to
                                           Pool II, the Group II Senior
                                           Certificates; with respect to Pool
                                           III, the Group III Senior
                                           Certificates; and with respect to
                                           Pool IV, the Group IV Senior
                                           Certificates. The Subordinated
                                           Certificates correspond to all of the
                                           Mortgage Pools.
COFI Certificates.....................     None.
Component Certificates................     None.
Components............................     None.
Delay Certificates....................     All interest-bearing Classes of Certificates other than the Non-Delay
                                           Certificates, if any.
ERISA-Restricted Certificates.........     The Residual
                                           Certificates, Private Certificates
                                           and Certificates of any Class that no
                                           longer satisfy the applicable rating
                                           requirement of the Underwriters'
                                           Exemption.
Floating Rate Certificates............     None.
Group I Senior Certificates...........     The Class I-A-1 and Class I-A-2 Certificates.
Group II Senior Certificates..........     The Class II-A-1 and Class II-A-R Certificates.
Group III Senior Certificates.........     The Class III-A-1 Certificates.
Group IV Senior Certificates..........     The Class IV-A-1, Class IV-A-2 and Class IV-A-3  Certificates.
Insured Retail Certificates...........     None.
Inverse Floating Rate Certificates....
                                           None.
LIBOR Certificates....................     None.
Non-Delay Certificates................     None.
Notional Amount Components............     None.
Notional Amount Certificates..........     None.
Offered Certificates..................     All Classes of the Certificates other than the Private Certificates.
Physical Certificates.................     The Private Certificates and the Residual Certificates.
Planned Principal Classes.............     None.
Principal Only Certificates...........     None.
Private Certificates..................     The Class B-4, Class B-5 and Class B-6 Certificates.
Rating Agencies.......................     S&P and Fitch; except that, for the purposes of the Class B-1, Class B-2,
                                           Class B-3, Class B-4 and Class B-5 Certificates, S&P shall be the sole
                                           Rating Agency.  The Class B-6 Certificates will not be rated.
</TABLE>

                                       3
<PAGE>

<TABLE>
<CAPTION>
<S>                                        <C>
Regular Certificates..................     All Classes of Certificates, other than the Residual Certificates.
Residual Certificates.................     The Class II-A-R Certificates.
Scheduled Principal Classes...........     None.
Senior Certificates...................     The Group I Senior Certificates, Group II Senior Certificates, Group III
                                           Senior Certificates and Group IV Senior Certificates, collectively.
Senior Mezzanine Certificates.........     The Class I-A-2 and Class IV-A-3 Certificates.
Subordinated Certificates.............     The Class B-1, Class B-2, Class B-3, Class B-4, Class B-5 and Class B-6
                                           Certificates.
Super Senior Certificates.............     The Class I-A-1 and Class IV-A-2.
Support Classes.......................     None.
Targeted Principal Classes............     None.
Underwriters..........................     FTN Financial Capital Markets, a
                                           division of First Tennessee Bank
                                           National Association, and Banc of
                                           America Securities LLC
</TABLE>

      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.

                                       4
<PAGE>

                                    ARTICLE I
                                   DEFINITIONS

      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 of
such Class of Certificates  immediately  prior to such  Distribution  Date, less
such Class' share of any Net Interest Shortfall, allocable among the outstanding
Classes of Senior  Certificates  of the related  Certificate  Group based on the
Accrued Certificate Interest otherwise  distributable  thereto, and allocable to
the  Subordinated  Certificates  based on  interest  accrued  on  their  related
Apportioned Principal Balances.

      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.

      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.

                                       5
<PAGE>

      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 on 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:

      o     all scheduled  installments of interest, net of the Master Servicing
            Fee and the Trustee Fee, and all scheduled installments of principal
            due in respect of the Mortgage  Loans in such  Mortgage  Pool on the
            Due Date in the  month in which the  Distribution  Date  occurs  and
            received before the related  Determination  Date,  together with any
            Advances in respect thereof;

      o     all  Insurance  Proceeds,  Liquidation  Proceeds  and  Unanticipated
            Recoveries  received  in  respect  of the  Mortgage  Loans  in  such
            Mortgage  Pool during the  calendar  month  before the  Distribution
            Date, which in each case is net of unreimbursed expenses incurred in
            connection  with  a  liquidation  or  foreclosure  and  unreimbursed
            Advances, if any;

      o     all Principal  Prepayments received in respect of the Mortgage Loans
            in such Mortgage  Pool during the related  Prepayment  Period,  plus
            interest received thereon, net of any Prepayment Interest Excess;

                                       6
<PAGE>

      o     any  Compensating  Interest in respect of Principal  Prepayments  in
            Full received in respect of the Mortgage Loans in such Mortgage Pool
            during the related  Prepayment  Period (or, in the case of the first
            Distribution Date, from the Cut-off Date); and

      o     any  Substitution  Adjustment  Amount or the Purchase  Price for any
            Deleted  Mortgage  Loan in the related  Mortgage  Pool or a Mortgage
            Loan in the related  Mortgage Pool  repurchased by the Seller or the
            Master Servicer as of such Distribution  Date, reduced by amounts in
            reimbursement  for Advances  previously  made and other amounts that
            the Master  Servicer  is entitled  to be  reimbursed  for out of the
            Certificate Account pursuant to this Agreement.

      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.

                                       7
<PAGE>

      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  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 2005-AR4."

      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.

      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).

                                       8
<PAGE>

      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 of the Mortgage  Pools with respect to such  Distribution  Date,
equals or exceeds such percentage calculated as of the Closing Date.

      Closing Date: August 30, 2005.

      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 Balance: Not applicable.

      Component Certificates: 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.

                                       9
<PAGE>

      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  Mortgage-Backed
Securities  Group,   First  Horizon  Asset  Securities  Inc.  Series  2005-AR4),
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  Lower  REMIC  Interest  identified  in
Section  2.7,  the  Class or  Classes  that are  identified  in  Section  2.7 as
corresponding to such Lower REMIC Interest.

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

      Custodial  Agreement:  The Custodial Agreement dated as of August 30, 2005
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: August 1, 2005.

      Cut-off   Date  Pool   Principal   Balance:   With   respect  to  Pool  I,
$32,300,005.83;  with respect to Pool II, $225,127,218.00;  with respect to Pool
III, $57,087,434.13; and with respect to Pool IV, $111,050,051.57.

      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.

                                       10
<PAGE>

      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 2005-AR4." 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 September 2005.

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

                                       11
<PAGE>

      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.

                                       12
<PAGE>

      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.

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

      Fraud Loss Coverage Amount: As of the Closing Date, $8,511,294.  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 $4,255,671 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.

      FTBNA:  First  Tennessee  Bank National  Association,  a national  banking
association.

      Group I Senior Certificates: As specified in the Preliminary Statement.

      Group II Senior Certificates: As specified in the Preliminary Statement.

                                       13
<PAGE>

      Group III Senior Certificates: As specified in the Preliminary Statement.

      Group IV Senior Certificates: As specified in the Preliminary Statement.

      Group Subordinate  Amount:  For a Mortgage Pool and any Distribution Date,
the  excess of (a) the Pool  Principal  Balance  of such  Mortgage  Pool for the
immediately   preceding   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: $147,947.

      Initial Component Balance: Not applicable.

      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
in respect of Insured Expenses.

      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.

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

      Lender PMI Mortgage Loan: Not applicable.

                                       14
<PAGE>

      LIBOR: Not applicable.

      LIBOR Certificates: Not applicable.

      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 of 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 Lower REMIC Interests, the RL 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.

                                       15
<PAGE>

      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(R)   System:   The  system  of   recording   transfers  of  mortgages
electronically maintained by MERS.

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

      MLPA I: The Mortgage Loan Purchase  Agreement dated as of August 30, 2005,
by and  between  First  Horizon  Home Loan  Corporation,  as  seller,  and First
Tennessee Bank National Association,  as purchaser,  as related to the transfer,
sale and conveyance of the Mortgage Loans.

      MLPA II: The Mortgage Loan Purchase Agreement dated as of August 30, 2005,
by and between First Tennessee Bank National  Association,  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.

                                       16
<PAGE>

      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.

                                       17
<PAGE>

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

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

      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: Not applicable.

                                       18
<PAGE>

      Notional Amount Component: Not applicable.

      Notional Amount Certificates: Not applicable.

      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.

                                       19
<PAGE>

      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 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.

      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;

                                       20
<PAGE>

            (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;

provided  that  no such  instrument  shall  be a  Permitted  Investment  if such
instrument evidences the right to receive interest only payments with respect to
the obligations underlying such instrument.

      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

                                       21
<PAGE>

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.

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

      Pool  Principal  Balance:  For each  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.

                                       22
<PAGE>

      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.

      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.

                                       23
<PAGE>

      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.

                                       24
<PAGE>

      Regular Certificates: As specified in the Preliminary Statement.

      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: Any of the Lower REMIC or the 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.

      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
II-A-R Certificate.

                                       25
<PAGE>

      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
II-A-R Certificate.

      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.

      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 MLPA I.

      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;

                                       26
<PAGE>

            (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 each 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)  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:

Period (Dates Inclusive)        Senior Prepayment Percentage
-----------------------------   ------------------------------------------------
September 2005 - August 2012    100%
-----------------------------   ------------------------------------------------
September 2012 - August 2013    The related  Senior  Percentage  plus 70% of the
                                related Subordinated Percentage
-----------------------------   ------------------------------------------------
September 2013 - August 2014    The related  Senior  Percentage  plus 60% of the
                                related Subordinated Percentage
-----------------------------   ------------------------------------------------

                                       27
<PAGE>

September 2014 - August 2015    The related  Senior  Percentage  plus 40% of the
                                related Subordinated Percentage
-----------------------------   ------------------------------------------------
September 2015 - August 2016    The related  Senior  Percentage  plus 20% of the
                                related Subordinated Percentage
-----------------------------   ------------------------------------------------
September 2016 and thereafter   The related Senior Percentage
-----------------------------   ------------------------------------------------

provided  however,  (i) if on any Distribution  Date the Senior Percentage for a
Certificate  Group exceeds the initial Senior  Percentage  for such  Certificate
Group,  the Senior  Prepayment  Percentage for each  Certificate  Group for such
Distribution  Date will equal 100%, (ii) if on any Distribution  Date before the
Distribution Date in September 2008, prior to giving effect to any distributions
on such  Distribution  Date, the  Subordinated  Percentage for such  Certificate
Group for such  Distribution  Date is equal to or greater than twice the initial
Subordinated  Percentage for such Certificate  Group, then the Senior Prepayment
Percentage for such 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 any Distribution  Date on
or after the Distribution  Date in September 2008, prior to giving effect to any
distributions on such  Distribution  Date, the Subordinated  Percentage for such
Certificate  Group for such  Distribution Date is equal to or greater than twice
the initial Subordinated  Percentage for such Certificate Group, then the Senior
Prepayment Percentage for such 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:

      (1)   the aggregate Stated  Principal  Balance of Mortgage Loans in all of
            the Mortgage  Pools  delinquent 60 days or more  (including for this
            purpose any Mortgage  Loans in  foreclosure or subject to bankruptcy
            proceedings  and  Mortgage  Loans with  respect to which the related
            Mortgaged Property, including REO Property, has been acquired by the
            Trust Fund) does not exceed 50% of the aggregate  Class  Certificate
            Balances of the Subordinated Certificates as of that date; and

      (2)   cumulative  Realized  Losses  on the  Mortgage  Loans  in all of the
            Mortgage Pools do not exceed:

            (a)  20% of the  Original  Subordinated  Principal  Balance  if such
            Distribution  Date occurs  between and including  September 2005 and
            August 2008; and

            (b)  30% of the  Original  Subordinated  Principal  Balance  if such
            Distribution Date occurs on or after September 2008.

                                       28
<PAGE>

      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.

      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.

      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,  or (ii) 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:

                                       29
<PAGE>

            (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,  $5,682,887.  As of any Distribution Date, the Special Hazard Loss
Coverage Amount will 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.

                                       30
<PAGE>

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

      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

                                       31
<PAGE>

      (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.

      Support Classes: Not applicable.

                                       32
<PAGE>

      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  ss.   1.860F-4(d)  and  Treasury
regulation ss. 301.6231(a)(7)-1.  Initially, the Tax Matters Person shall be the
Trustee.

      Tax Matters  Person  Certificate:  The Class  II-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 MLPA II;  (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.

      Two Times Test:  A test that is satisfied  with  respect to a  Certificate
Group and any Distribution Date if the related Senior Prepayment  Percentage for
such Distribution Date is determined in accordance with clause (ii) and (iii) of
the proviso in the definition of "Senior Prepayment Percentage."

      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.

                                       33
<PAGE>

      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 Lower 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) 99%
of all Voting  Rights will be allocated  among all Holders of the  Certificates,
other  than  the  Class  II-A-R  Certificates,   in  proportion  to  their  then
outstanding Class Certificate Balance; and (b) 1.0% of all Voting Rights will be
allocated to the Class II-A-R  Certificates  (such Voting Rights to be allocated
among the  Holders  of  Certificates  of 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.

                                   ARTICLE II
                          CONVEYANCE OF MORTGAGE LOANS;
                         REPRESENTATIONS AND WARRANTIES

      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
      MLPA I, 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 MLPA II.

(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:

                                       34
<PAGE>

      (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,  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 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;

      (iii) in the case of each 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

                                       35
<PAGE>

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

            (A)   The Coop Shares, together with a stock power in blank;

            (B)   The executed Security Agreement;

            (C)   The executed Proprietary Lease;

            (D)   The executed Recognition Agreement;

            (E)   The  executed  UCC-1  financing  statement  with  evidence  of
                  recording thereon which have been filed in all places required
                  to perfect  the  Seller's  interest in the Coop Shares and the
                  Proprietary Lease; and

            (F)   Executed UCC-3 financing  statements or other  appropriate UCC
                  financing  statements  required  by state  law,  evidencing  a
                  complete and unbroken  line from the  mortgagee to the Trustee
                  with evidence of recording  thereon (or in a form suitable for
                  recordation).

      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.

                                       36
<PAGE>

      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
2005-AR4, 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.

                                       37
<PAGE>

      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.

                                       38
<PAGE>

      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,  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(R)  System  in
accordance  with MERS' rules and  regulations or (ii) cause MERS to designate on
the MERS(R) System the Seller as the beneficial holder of such Mortgage Loan.

                                       39
<PAGE>

      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 MLPA I, 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 MLPA I, are
required  to  conform  to,  among  other   representations  and  warranties,   a
representation and warranty of the Seller set forth in MLPA I 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 by
the specific  applicable  local,  state or federal predatory and abusive lending
laws.

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

      (a)   The Master Servicer hereby makes the  representations and warranties
            set forth in Schedule II hereto and by this  reference  incorporated
            herein, to the Depositor and the Trustee, as of the Closing Date, or
            if so specified therein, as of the Cut-off Date.

      (b)   Upon  discovery  by any of  the  parties  hereto  of a  breach  of a
            representation  or  warranty  made  pursuant to Schedule B to MLPA I
            that   materially  and  adversely   affects  the  interests  of  the
            Certificateholders  in any Mortgage Loan, the party discovering such
            breach shall give prompt notice  thereof to the other  parties.  The
            Seller  hereby  covenants  that within 90 days of the earlier of its
            discovery  or its  receipt  of  written  notice  from any party of a
            breach of any representation or warranty made pursuant to Schedule B
            to MLPA I which  materially  and adversely  affects the interests of

                                       40
<PAGE>

            the  Certificateholders  in any  Mortgage  Loan,  it shall cure such
            breach in all material respects, and if such breach is not so cured,
            shall,  (i) if  such  90-day  period  expires  prior  to the  second
            anniversary  of the  Closing  Date,  remove  such  Mortgage  Loan (a
            "Deleted  Mortgage  Loan") from the Trust Fund and substitute in its
            place a Substitute  Mortgage  Loan, in the manner and subject to the
            conditions  set  forth  in  this  Section;  or (ii)  repurchase  the
            affected  Mortgage  Loan or  Mortgage  Loans from the Trustee at the
            Purchase  Price in the manner set forth  below;  provided,  however,
            that  any such  substitution  pursuant  to (i)  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  such
            substitution  pursuant to (i) above  shall not be effected  prior to
            the  additional  delivery  to the  Trustee or the  Custodian  on its
            behalf of a Request for Release substantially in the form of Exhibit
            M and the Mortgage File for any such  Substitute  Mortgage Loan. The
            Seller shall promptly  reimburse the Master Servicer and the Trustee
            for any expenses  reasonably  incurred by the Master Servicer or the
            Trustee in respect of enforcing  the remedies for such breach.  With
            respect to the  representations  and  warranties  described  in this
            Section which are made to the best of the Seller's knowledge,  if it
            is  discovered  by either the  Depositor,  the Seller or the Trustee
            that the substance of such representation and warranty is inaccurate
            and such  inaccuracy  materially and adversely  affects the value of
            the related Mortgage Loan or the interests of the Certificateholders
            therein, notwithstanding the Seller's lack of knowledge with respect
            to the substance of such representation or warranty, such inaccuracy
            shall  be  deemed  a  breach  of the  applicable  representation  or
            warranty.

      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
MLPA I 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 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.

                                       41
<PAGE>

      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 MLPA II 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.

                                       42
<PAGE>

      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 MLPA I 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.

                                       43
<PAGE>

      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  Interests  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 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 II-A-R  Certificate  shall represent  ownership of the RL
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.

Lower REMIC
Interest or        Lower REMIC           Lower REMIC      Corresponding Class of
Residual           Interest Balance      Interest Rate    Upper REMIC Interests
--------------------------------------------------------------------------------
                                                           Interest    Principal

L-I-A-1            $        11,628.05         (2)            (1)            (1)
L-I-A-2            $         1,292.01         (2)            (1)            (1)
L-I-A-ZZZ          $    32,287,085.77         (2)            (1)            (1)
RL                 $             0.00        N/A            N/A            N/A
L-II-A-1           $        81,046.06         (3)            (1)            (1)
L-II-A-2           $         9,005.12         (3)            (1)            (1)
L-II-A-ZZZ         $   225,037,166.82         (3)            (1)            (1)
L-III-A-1          $        20,559.91         (4)            (1)            (1)
L-III-A-2          $         2,284.43         (4)            (1)            (1)
L-III-A-ZZZ        $    57,064,589.79         (4)            (1)            (1)
L-IV-A-1           $        39,978.46         (5)            (1)            (1)
L-IV-A-2           $         4,442.05         (5)            (1)            (1)
L-IV-A-ZZZ         $   111,005,631.06         (5)            (1)            (1)
Total              $   425,564,709.53
                   ------------------

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

      (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.

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

      "L1 Interests"  refers to the L-I-A-1 Lower REMIC  Interest,  the L-II-A-1
Lower REMIC  Interests,  L-III-A-1 Lower REMIC Interest,  and the L-IV-A-1 Lower
REMIC  Interests.  "L2  Interests"  refers to the L-I-A-2 Lower REMIC  Interest,
L-II-A-2 Lower REMIC  Interest,  L-III-A-2 Lower REMIC Interest and the L-IV-A-2
Lower REMIC Interest. "LZZZ Interests" refers to L-I-A-ZZZ Lower REMIC Interest,
L-II-A-ZZZ Lower REMIC Interest, L-III-A-ZZZ Lower REMIC Interest and L-IV-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.

                                       44
<PAGE>

      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 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 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 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 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 from which the payment was  reallocated it shall reimburse the
Upper 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 Upper  REMIC as  reimbursement  for prior  Realized
Losses.

                                       45
<PAGE>

      The  foregoing  REMIC  structure is intended to cause all of the cash from
the  Mortgage  Loans to flow  through to the Upper REMIC as cash flow on a REMIC
regular interest, without creating any shortfall-actual or potential (other than
for  credit  losses)  to any REMIC  regular  interest.  To the  extent  that the
structure is believed to diverge from such  intention  the Trustee shall resolve
ambiguities to accomplish such result and shall to the extent necessary  rectify
any  drafting   errors  or  seek   clarification   to  the   structure   without
Certificateholder  approval (but with  guidance of counsel) to  accomplish  such
intention.

      SECTION 2.8 Covenants of the Master Servicer.

      The Master Servicer  hereby  covenants to the Depositor and the Trustee as
follows:

      (a)   the  Master   Servicer  shall  comply  in  the  performance  of  its
            obligations  under  this  Agreement  with all  reasonable  rules and
            requirements  of the insurer under each Required  Insurance  Policy;
            and

      (b)   no  written  information,   certificate  of  an  officer,  statement
            furnished in writing or written  report  delivered to the Depositor,
            any  affiliate  of the  Depositor or the Trustee and prepared by the
            Master  Servicer  pursuant to this Agreement will contain any untrue
            statement  of a  material  fact  or omit to  state a  material  fact
            necessary to make such information, certificate, statement or report
            not misleading.

                                  ARTICLE III
                 ADMINISTRATION AND SERVICING OF MORTGAGE LOANS

SECTION 3.1 Master Servicer to Service Mortgage Loans.

      For and on behalf of the  Certificateholders,  the Master  Servicer  shall
service and administer  the Mortgage  Loans in accordance  with the terms of (i)
the Servicing  Rights  Transfer and  Subservicing  Agreement,  pursuant to which
First  Tennessee  Mortgage  Services,   Inc.  engaged  the  Master  Servicer  to
subservice the Mortgage  Loans,  (ii) this Agreement and (iii) the customary and
usual standards of practice of prudent mortgage loan servicers; provided that if
there is a  conflict  between  the  terms  of the  Servicing  Agreement  and the
Servicing Rights Transfer and Subservicing  Agreement, on the one hand, and this
Agreement,  on the other hand,  the terms of this Agreement  shall  prevail.  In
connection  with such servicing and  administration,  the Master  Servicer shall
have full power and  authority,  acting alone  and/or  through  Subservicers  as

                                       46
<PAGE>

provided  in Section  3.2  hereof,  to do or cause to be done any and all things
that it may deem  necessary or desirable in connection  with such  servicing and
administration,  including but not limited to, the power and authority,  subject
to  the  terms   hereof  (i)  to  execute   and   deliver,   on  behalf  of  the
Certificateholders  and the  Trustee,  customary  consents  or waivers and other
instruments  and  documents,  (ii) to  consent  to  transfers  of any  Mortgaged
Property and  assumptions of the Mortgage Notes and related  Mortgages (but only
in the  manner  provided  in this  Agreement),  (iii) to collect  any  Insurance
Proceeds and other Liquidation Proceeds,  and (iv) to effectuate  foreclosure or
other  conversion  of the  ownership  of the  Mortgaged  Property  securing  any
Mortgage Loan;  provided that the Master Servicer shall not take any action that
is  inconsistent  with or  prejudices  the  interests  of the Trust  Fund or the
Certificateholders  in any  Mortgage  Loan or the  rights and  interests  of the
Depositor,  the Trustee and the  Certificateholders  under this  Agreement.  The
Master  Servicer shall  represent and protect the interests of the Trust Fund in
the same manner as it protects its own  interests  in mortgage  loans in its own
portfolio in any claim,  proceeding or litigation regarding a Mortgage Loan, and
shall not make or permit any  modification,  waiver or amendment of any Mortgage
Loan which would cause any REMIC created hereunder to fail to qualify as a REMIC
or result in the imposition of any tax under Section  860F(a) or Section 860G(d)
of the Code.  Without  limiting  the  generality  of the  foregoing,  the Master
Servicer,  in its own name or in the name of the Depositor  and the Trustee,  is
hereby  authorized  and  empowered by the  Depositor  and the Trustee,  when the
Master Servicer believes it appropriate in its reasonable  judgment,  to execute
and deliver, on behalf of the Trustee, the Depositor,  the Certificateholders or
any of them, any and all  instruments of  satisfaction  or  cancellation,  or of
partial or full release or discharge and all other comparable instruments,  with
respect to the Mortgage Loans, and with respect to the Mortgaged Properties held
for the benefit of the Certificateholders. The Master Servicer shall prepare and
deliver to the Depositor and/or the Trustee such documents  requiring  execution
and delivery by either or both of them as are necessary or appropriate to enable
the Master  Servicer to service and  administer the Mortgage Loans to the extent
that the Master  Servicer is not permitted to execute and deliver such documents
pursuant  to the  preceding  sentence.  Upon  receipt  of  such  documents,  the
Depositor  and/or the Trustee shall  execute such  documents and deliver them to
the Master Servicer.  The Master Servicer further is authorized and empowered by
the Trustee,  on behalf of the  Certificateholders  and the Trustee,  in its own
name  or in the  name  of the  Subservicer,  when  the  Master  Servicer  or the
Subservicer as the case may be,  believes it appropriate in its best judgment to
register any Mortgage Loan on the MERS(R) System,  or cause the removal from the
registration of any Mortgage Loan on the MERS(R) System, to execute and deliver,
on behalf of the Trustee and the  Certificateholders or any of them, any and all
instruments of assignment and other comparable  instruments with respect to such
assignment or re-recording of a Mortgage in the name of MERS,  solely as nominee
for the Trustee and its successors and assigns.

      In accordance  with the standards of the preceding  paragraph,  the Master
Servicer  shall  advance  or cause to be  advanced  funds as  necessary  for the
purpose of  effecting  the  payment of taxes and  assessments  on the  Mortgaged
Properties,  which  advances  shall be  reimbursable  in the first instance from
related  collections from the Mortgagors pursuant to Section 3.6, and further as
provided in Section 3.8. The costs incurred by the Master  Servicer,  if any, in
effecting  the  timely  payments  of  taxes  and  assessments  on the  Mortgaged
Properties  and  related  insurance  premiums  shall  not,  for the  purpose  of
calculating  monthly  distributions to the  Certificateholders,  be added to the
Stated Principal  Balances of the related Mortgage Loans,  notwithstanding  that
the terms of such Mortgage Loans so permit.

                                       47
<PAGE>

SECTION 3.2 Subservicing; Enforcement of the Obligations of Servicers.

      (a)   The Master Servicer may arrange for the subservicing of any Mortgage
            Loan  by  a  Subservicer  pursuant  to  a  subservicing   agreement;
            provided,  however, that such subservicing arrangement and the terms
            of the related subservicing agreement must provide for the servicing
            of such  Mortgage  Loans in a manner  consistent  with the servicing
            arrangements  contemplated  hereunder.  Unless the context otherwise
            requires,  references  in this  Agreement to actions  taken or to be
            taken by the Master Servicer in servicing the Mortgage Loans include
            actions  taken or to be  taken by a  Subservicer  on  behalf  of the
            Master Servicer.  Notwithstanding the provisions of any subservicing
            agreement,  any of the  provisions  of this  Agreement  relating  to
            agreements  or  arrangements  between  the  Master  Servicer  and  a
            Subservicer  or reference to actions taken through a Subservicer  or
            otherwise,  the Master Servicer shall remain obligated and liable to
            the  Depositor,  the  Trustee  and  the  Certificateholders  for the
            servicing  and  administration  of the Mortgage  Loans in accordance
            with the  provisions of this  Agreement  without  diminution of such
            obligation or liability by virtue of such subservicing agreements or
            arrangements  or by virtue of  indemnification  from the Subservicer
            and to the same extent and under the same terms and conditions as if
            the Master  Servicer  alone were  servicing  and  administering  the
            Mortgage Loans. All actions of each Subservicer  performed  pursuant
            to the related subservicing agreement shall be performed as an agent
            of the  Master  Servicer  with  the  same  force  and  effect  as if
            performed directly by the Master Servicer.

      (b)   For purposes of this Agreement,  the Master Servicer shall be deemed
            to have  received  any  collections,  recoveries  or  payments  with
            respect to the  Mortgage  Loans that are  received by a  Subservicer
            regardless of whether such payments are remitted by the  Subservicer
            to the Master Servicer.

      SECTION  3.3  Rights of the  Depositor  and the  Trustee in Respect of the
Master Servicer.

      The Depositor may, but is not obligated to, enforce the obligations of the
Master Servicer hereunder and may, but is not obligated to, perform,  or cause a
designee to perform,  any defaulted  obligation of the Master Servicer hereunder
and in  connection  with any such  defaulted  obligation to exercise the related
rights of the Master Servicer hereunder; provided that the Master Servicer shall
not  be  relieved  of any  of  its  obligations  hereunder  by  virtue  of  such
performance  by the  Depositor  or its  designee.  Neither  the  Trustee nor the
Depositor shall have any  responsibility  or liability for any action or failure
to act by the  Master  Servicer  nor  shall  the  Trustee  or the  Depositor  be
obligated to  supervise  the  performance  of the Master  Servicer  hereunder or
otherwise.

SECTION 3.4 Trustee to Act as Master Servicer.

      In the event  that the Master  Servicer  shall for any reason no longer be
the Master Servicer hereunder (including by reason of an Event of Default),  the
Trustee  or  its  successor  shall  thereupon  assume  all  of  the  rights  and
obligations of the Master Servicer hereunder arising thereafter (except that the
Trustee  shall not be (i) liable for losses of the Master  Servicer  pursuant to
Section 3.9 hereof or any acts or omissions of the  predecessor  Master Servicer
hereunder), (ii) obligated to make Advances if it is prohibited from doing so by
applicable law, (iii) obligated to effectuate  repurchases or  substitutions  of
Mortgage  Loans  hereunder  including,   but  not  limited  to,  repurchases  or
substitutions  of Mortgage  Loans  pursuant  to Section 2.2 or 2.3 hereof,  (iv)
responsible for expenses of the Master  Servicer  pursuant to Section 2.3 or (v)
deemed to have made any  representations  and warranties of the Master  Servicer
hereunder).  Any such assumption shall be subject to Section 7.2 hereof.  If the
Master Servicer shall for any reason no longer be the Master Servicer (including
by reason of any Event of Default),  the Trustee or its successor  shall succeed
to any rights and  obligations of the Master  Servicer  under each  subservicing
agreement.

      The Master Servicer shall, upon request of the Trustee, but at the expense
of the Master Servicer,  deliver to the assuming party all documents and records
relating to each subservicing agreement or substitute subservicing agreement and
the Mortgage Loans then being  serviced  thereunder and an accounting of amounts
collected or held by it and otherwise use its best efforts to effect the orderly
and efficient transfer of the substitute  subservicing agreement to the assuming
party.

      SECTION 3.5  Collection of Mortgage Loan  Payments;  Certificate  Account;
Distribution Account.

      (a)   The Master Servicer shall make reasonable efforts in accordance with
            the  customary and usual  standards of practice of prudent  mortgage
            servicers  to collect  all  payments  called for under the terms and
            provisions of the Mortgage Loans to the extent such procedures shall
            be consistent  with this  Agreement and the terms and  provisions of
            any  related  Required   Insurance   Policy.   Consistent  with  the
            foregoing,  the Master  Servicer may in its discretion (i) waive any
            late payment charge or any prepayment  charge or penalty interest in
            connection  with the  prepayment  of a Mortgage Loan and (ii) extend
            the due dates for payments  due on a Mortgage  Note for a period not
            greater than 180 days; provided,  however,  that the Master Servicer
            cannot  extend the maturity of any such  Mortgage Loan past the date
            on which the final  payment is due on the latest  maturing  Mortgage
            Loan as of the Cut-off Date.  In the event of any such  arrangement,
            the Master Servicer shall make Advances on the related Mortgage Loan
            in  accordance  with  the  provisions  of  Section  4.1  during  the
            scheduled  period in accordance  with the  amortization  schedule of
            such  Mortgage Loan without  modification  thereof by reason of such
            arrangements. The Master Servicer shall not be required to institute
            or join in  litigation  with  respect to  collection  of any payment
            (whether under a Mortgage, Mortgage Note or otherwise or against any
            public  or  governmental  authority  with  respect  to a  taking  or
            condemnation) if it reasonably believes that enforcing the provision
            of the Mortgage or other  instrument  pursuant to which such payment
            is required is prohibited by applicable law.

      (b)   The Master  Servicer  shall  establish and maintain the  Certificate
            Account.  The  Certificate  Account  shall  consist of four separate
            subaccounts,  each of which shall  relate to a  particular  Mortgage
            Pool.  The Master  Servicer  shall  deposit or cause to be deposited
            into the appropriate  subaccount of the Certificate Account no later
            than  two  Business   Days  after   receipt,   except  as  otherwise
            specifically provided herein, the following payments and collections
            remitted  by  Subservicers  or  received  by it in  respect  of  the
            Mortgage Loans subsequent to the Cut-off Date (other than in respect
            of principal and interest due on the Mortgage Loans on or before the
            Cut-off  Date) and the  following  amounts  required to be deposited
            hereunder:

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<PAGE>

            (i)   all payments on account of principal on the Mortgage  Loans in
                  the related Mortgage Pool, including Principal Prepayments;

            (ii)  all payments on account of interest on the  Mortgage  Loans in
                  the related Mortgage Pool, net of the related Master Servicing
                  Fee and any Prepayment Interest Excess;

            (iii) all Insurance Proceeds and Liquidation  Proceeds in respect of
                  the related Mortgage Loans in the related Mortgage Pool, other
                  than  proceeds to be applied to the  restoration  or repair of
                  the  Mortgaged  Property  or  released  to  the  Mortgagor  in
                  accordance  with  the  Master   Servicer's   normal  servicing
                  procedures;

            (iv)  any amount  required to be deposited by the Master Servicer in
                  respect  of the  related  Mortgage  Pool  pursuant  to Section
                  3.5(c) in connection with any losses on Permitted Investments;

            (v)   any amounts required to be deposited by the Master Servicer in
                  respect  of the  related  Mortgage  Pool  pursuant  to Section
                  3.9(b) and 3.9(d);

            (vi)  all Substitution  Adjustment Amounts in respect of the related
                  Mortgage Pool;

            (vii) all Advances in respect of the related  Mortgage  Pool made by
                  the Master Servicer pursuant to Section 4.1; and

           (viii) any other  amounts  required  to be  deposited  hereunder  in
                  respect of the related Mortgage Pool.

      In  addition,  with  respect  to any  Mortgage  Loan that is  subject to a
buydown  agreement,  on each Due Date for such Mortgage Loan, in addition to the
monthly payment remitted by the Mortgagor, the Master Servicer shall cause funds
to be deposited into the applicable  subaccount of the Certificate Account in an
amount  required to cause an amount of interest to be paid with  respect to such
Mortgage  Loan equal to the amount of interest that has accrued on such Mortgage
Loan from the preceding Due Date at the related  Adjusted  Mortgage Rate on such
date.

      The foregoing  requirements for remittance by the Master Servicer shall be
exclusive,  it being understood and agreed that, without limiting the generality
of the foregoing,  payments in the nature of prepayment penalties,  late payment
charges,  assumption fees or amounts attributable to reimbursements of Advances,
if collected, need not be remitted by the Master Servicer. In the event that the
Master  Servicer  shall remit any amount not required to be remitted,  it may at
any time withdraw or direct the institution  maintaining the Certificate Account
to withdraw such amount from the Certificate  Account,  any provision  herein to
the contrary  notwithstanding.  Such withdrawal or direction may be accomplished
by delivering  written notice  thereof to the Trustee or such other  institution
maintaining  the Certificate  Account which  describes the amounts  deposited in
error in the Certificate  Account.  The Master Servicer shall maintain  adequate
records with respect to all withdrawals made pursuant to this Section. All funds
deposited  in  the   Certificate   Account  shall  be  held  in  trust  for  the
Certificateholders until withdrawn in accordance with Section 3.8.

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<PAGE>

      (c)   The  Trustee  shall  establish  and  maintain,   on  behalf  of  the
            Certificateholders,   the  Distribution  Account.  The  Distribution
            Account shall consist of four  separate  subaccounts,  each of which
            shall  relate to a  particular  Mortgage  Pool.  The Trustee  shall,
            promptly  upon  receipt,  deposit in the  Distribution  Account  and
            retain therein the following:

            (i)   the aggregate  amount  remitted by the Master  Servicer to the
                  Trustee  in respect of a  Mortgage  Pool  pursuant  to Section
                  3.8(a)(ix);

            (ii)  any amount  deposited by the Master Servicer  pursuant to this
                  Section  3.5(c) in  connection  with any  losses on  Permitted
                  Investments; and

            (iii) any other amounts deposited hereunder which are required to be
                  deposited in the Distribution Account.

      In the event that the Master  Servicer shall remit any amount not required
to be  remitted,  it may at any time direct the Trustee to withdraw  such amount
from the applicable subaccount of the Distribution Account, any provision herein
to  the  contrary  notwithstanding.   Such  direction  may  be  accomplished  by
delivering an Officer's  Certificate to the Trustee which  describes the amounts
deposited  in error in the  Distribution  Account.  All funds  deposited  in the
Distribution  Account  shall be held by the  Trustee  in trust  for the  related
Certificateholders   until  disbursed  in  accordance  with  this  Agreement  or
withdrawn in  accordance  with Section 3.8. In no event shall the Trustee  incur
liability for withdrawals from the Distribution  Account at the direction of the
Master Servicer.

            (iv)  The  institutions  at which the  Certificate  Account  and the
                  Distribution  Account are  maintained  shall  invest  funds as
                  directed by the Master Servicer in Permitted Investments which
                  in both cases  shall  mature not later than (i) in the case of
                  the  Certificate   Account,   the  second  Business  Day  next
                  preceding  the  related   Distribution  Account  Deposit  Date
                  (except that if such Permitted  Investment is an obligation of
                  the  institution  that  maintains  such  account,   then  such
                  Permitted  Investment shall mature not later than the Business
                  Day next preceding such Distribution Account Deposit Date) and
                  (ii) in the case of the Distribution Account, the Business Day
                  next  preceding  the  Distribution  Date  (except that if such
                  Permitted  Investment is an obligation of the institution that
                  maintains such fund or account, then such Permitted Investment
                  shall  mature not later than such  Distribution  Date) and, in
                  each  case,  shall  not be sold or  disposed  of  prior to its

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<PAGE>

                  maturity.  If the Master  Servicer does not provide such prior
                  written investment direction,  the funds in such accounts will
                  be held uninvested.  All such Permitted  Investments  shall be
                  made  in the  name of the  Trustee,  for  the  benefit  of the
                  Certificateholders.  All  income  and gain  net of any  losses
                  realized  from any such  investment of funds on deposit in the
                  Certificate  Account  shall be for the  benefit  of the Master
                  Servicer as servicing compensation and all income and gain net
                  of any losses  realized  from any such  investment of funds on
                  deposit in the  Distribution  Account shall be for the benefit
                  of the  Trustee.  The  amount  of any  Realized  Losses in the
                  Certificate  Account in respect of any such investments  shall
                  promptly  be   deposited   by  the  Master   Servicer  in  the
                  Certificate  Account and the amount of any Realized  Losses in
                  the  Distribution  Account in respect of any such  investments
                  shall   promptly  be   deposited   by  the  Trustee  into  the
                  Distribution   Account.  All  reinvestment  income  earned  on
                  amounts on deposit in the  Distribution  Account  shall be for
                  the  benefit of the  Trustee.  The  Trustee  in its  fiduciary
                  capacity  shall  not be  liable  for the  amount  of any  loss
                  incurred in respect of any investment or lack of investment of
                  funds held in the  Certificate  Account and made in accordance
                  with this Section 3.5.

            (v)   The Master  Servicer  shall give  notice to the  Trustee,  the
                  Seller,  each Rating  Agency and the Depositor of any proposed
                  change of the location of the Certificate Account prior to any
                  change  thereof.  The Trustee  shall give notice to the Master
                  Servicer,  the Seller, each Rating Agency and the Depositor of
                  any  proposed  change  of the  location  of  the  Distribution
                  Account prior to any change thereof.

      SECTION 3.6 Collection of Taxes,  Assessments  and Similar  Items;  Escrow
Accounts.

      (a)   To the  extent  required  by  the  related  Mortgage  Note  and  not
            violative of current law, the Master  Servicer  shall  establish and
            maintain  one or more  accounts  (each,  an  "Escrow  Account")  and
            deposit and retain therein all  collections  from the Mortgagors (or
            advances  by  the  Master   Servicer)  for  the  payment  of  taxes,
            assessments,  hazard insurance  premiums or comparable items for the
            account of the  Mortgagors.  Nothing herein shall require the Master
            Servicer to compel a Mortgagor  to  establish  an Escrow  Account in
            violation of applicable law.

      (b)   Withdrawals of amounts so collected from the Escrow  Accounts may be
            made only to effect  timely  payment of taxes,  assessments,  hazard
            insurance   premiums,   condominium  or  PUD  association  dues,  or
            comparable  items,  to reimburse the Master  Servicer out of related
            collections  for any payments  made  pursuant to Sections 3.1 hereof
            (with respect to taxes and assessments  and insurance  premiums) and
            3.9  hereof  (with  respect to hazard  insurance),  to refund to any
            Mortgagors any sums determined to be overages,  to pay interest,  if
            required  by law or the terms of the  related  Mortgage  or Mortgage
            Note, to  Mortgagors  on balances in the Escrow  Account or to clear
            and  terminate  the  Escrow  Account  at  the  termination  of  this
            Agreement in accordance with Section 9.1 hereof. The Escrow Accounts
            shall not be a part of the Trust Fund.

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<PAGE>

      (c)   The Master  Servicer  shall  advance  any  payments  referred  to in
            Section  3.6(a)  that are not timely paid by the  Mortgagors  on the
            date when the tax,  premium or other cost for which such  payment is
            intended  is due,  but the Master  Servicer  shall be required so to
            advance  only to the extent  that such  advances,  in the good faith
            judgment of the Master  Servicer,  will be recoverable by the Master
            Servicer  out  of  Insurance  Proceeds,   Liquidation   Proceeds  or
            otherwise.

      SECTION 3.7 Access to Certain  Documentation and Information Regarding the
Mortgage Loans.

      The Master Servicer shall afford the Depositor and the Trustee  reasonable
access to all records and  documentation  regarding  the Mortgage  Loans and all
accounts,  insurance  information and other matters  relating to this Agreement,
such access being afforded without charge,  but only upon reasonable request and
during normal business hours at the office designated by the Master Servicer.

      Upon  reasonable  advance  notice in  writing,  the Master  Servicer  will
provide to each  Certificateholder  or Certificate  Owner which is a savings and
loan  association,  bank or insurance  company  certain  reports and  reasonable
access to information and documentation  regarding the Mortgage Loans sufficient
to permit such  Certificateholder or Certificate Owner to comply with applicable
regulations  of  the  OTS  or  other  regulatory  authorities  with  respect  to
investment  in the  Certificates;  provided  that the Master  Servicer  shall be
entitled to be reimbursed by each such  Certificateholder  or Certificate  Owner
for actual  expenses  incurred by the Master  Servicer in providing such reports
and access.

      SECTION  3.8  Permitted  Withdrawals  from  the  Certificate  Account  and
Distribution Account.

      (a)   The Master Servicer may from time to time make  withdrawals from the
            applicable  subaccount of the Certificate  Account for the following
            purposes:

            (i)   to the extent not previously  retained by the Master Servicer,
                  to  pay  to  the  Master   Servicer   the   master   servicing
                  compensation to which it is entitled pursuant to Section 3.14,
                  and earnings on or investment  income with respect to funds in
                  or credited to the  Certificate  Account as additional  master
                  servicing compensation;

            (ii)  to the extent not previously  retained by the Master Servicer,
                  to reimburse  the Master  Servicer for  unreimbursed  Advances
                  made by it in respect of the related Mortgage Pool, such right
                  of reimbursement pursuant to this subclause (ii) being limited
                  to  amounts  received  on the  Mortgage  Loan(s) in respect of
                  which any such Advance was made;

            (iii) to  reimburse  the  Master  Servicer  for  any  Nonrecoverable
                  Advance  previously  made in respect of the  related  Mortgage
                  Pool;

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<PAGE>

            (iv)  to reimburse the Master Servicer for Insured Expenses from the
                  related Insurance  Proceeds in respect of the related Mortgage
                  Pool;

            (v)   to  reimburse  the  Master   Servicer  for  (a)   unreimbursed
                  Servicing  Advances in respect of the related  Mortgage  Pool,
                  the Master Servicer's right to reimbursement  pursuant to this
                  clause (a) with respect to any Mortgage  Loan being limited to
                  amounts received on such Mortgage Loan(s) which represent late
                  recoveries  of the payments for which such  advances were made
                  pursuant  to  Section  3.1 or  Section  3.6 and (b) for unpaid
                  Master Servicing Fees as provided in Section 3.11 hereof;

            (vi)  to pay to the Seller or Master Servicer,  as applicable,  with
                  respect  to each  Mortgage  Loan  in  respect  of the  related
                  Mortgage Pool or property acquired in respect thereof that has
                  been  purchased  pursuant  to Section  2.2,  2.3 or 3.11,  all
                  amounts received thereon after the date of such purchase;

            (vii) to reimburse the Seller,  the Master Servicer or the Depositor
                  for expenses incurred by any of them and reimbursable pursuant
                  to Section 6.3 hereof;

            (viii) to withdraw any amount  deposited in the Certificate  Account
                  and not required to be deposited therein;

            (ix)  on or prior  to the  Distribution  Account  Deposit  Date,  to
                  withdraw an amount  equal to the related  Available  Funds and
                  the  Trustee  Fee for such  Distribution  Date and remit  such
                  amount to the Trustee for deposit in the Distribution Account;
                  and

            (x)   to  clear  and   terminate   the   Certificate   Account  upon
                  termination of this Agreement pursuant to Section 9.1 hereof.

      The Master  Servicer  shall keep and maintain  separate  accounting,  on a
Mortgage  Loan-by-Mortgage  Loan basis and on a Mortgage  Pool-by-Mortgage  Pool
basis, for the purpose of justifying any withdrawal from the Certificate Account
pursuant to such subclauses (i), (ii),  (iv), (v) and (vi).  Prior to making any
withdrawal from the Certificate  Account pursuant to subclause (iii), the Master
Servicer  shall deliver to the Trustee an Officer's  Certificate  of a Servicing
Officer  indicating the amount of any previous Advance  determined by the Master
Servicer to be a  Nonrecoverable  Advance and identifying  the related  Mortgage
Loans(s), and their respective portions of such Nonrecoverable Advance.

      (b)   The Trustee shall withdraw  funds from the applicable  subaccount of
            the   Distribution   Account  for   distributions   to  the  related
            Certificateholders in the manner specified in this Agreement (and to
            withhold from the amounts so withdrawn, the amount of any taxes that
            it is  authorized  to  withhold  pursuant to the last  paragraph  of
            Section  8.11).  In  addition,  the Trustee may (and with respect to
            clauses (i) and (ii) below, shall), prior to making the distribution
            pursuant to Section 4.2 from time to time make  withdrawals from the
            Distribution Account for the following purposes:

                                       53
<PAGE>

            (i)   to pay to itself the Trustee Fee for the related  Distribution
                  Date;

            (ii)  to pay to itself earnings on or investment income with respect
                  to funds in the Distribution Account;

            (iii) to  withdraw  and  return to the  Master  Servicer  any amount
                  deposited in the  Distribution  Account and not required to be
                  deposited therein; and

            (iv)  to  clear  and   terminate  the   Distribution   Account  upon
                  termination of the Agreement pursuant to Section 9.1 hereof.

      SECTION  3.9  Maintenance  of Hazard  Insurance;  Maintenance  of  Primary
Insurance Policies.

      (a)   The Master Servicer shall cause to be maintained,  for each Mortgage
            Loan,  hazard insurance with extended  coverage in an amount that is
            at least equal to the lesser of (i) the maximum  insurable  value of
            the improvements  securing such Mortgage Loan or (ii) the greater of
            (y) the outstanding  principal  balance of the Mortgage Loan and (z)
            an amount such that the proceeds of such policy shall be  sufficient
            to prevent  the  Mortgagor  and/or  the  mortgagee  from  becoming a
            co-insurer.  Each such policy of  standard  hazard  insurance  shall
            contain,  or have  an  accompanying  endorsement  that  contains,  a
            standard  mortgagee  clause.  Any  amounts  collected  by the Master
            Servicer  under any such  policies  (other  than the  amounts  to be
            applied  to the  restoration  or  repair  of the  related  Mortgaged
            Property or amounts released to the Mortgagor in accordance with the
            Master Servicer's normal servicing procedures) shall be deposited in
            the  applicable  subaccount  of the  Certificate  Account.  Any cost
            incurred by the Master  Servicer in  maintaining  any such insurance
            shall not, for the purpose of calculating  monthly  distributions to
            the  Certificateholders  or  remittances  to the  Trustee  for their
            benefit,  be added to the  principal  balance of the Mortgage  Loan,
            notwithstanding  that the terms of the Mortgage Loan so permit. Such
            costs  shall  be  recoverable  by the  Master  Servicer  out of late
            payments by the related Mortgagor or out of Liquidation  Proceeds to
            the extent  permitted by Section 3.8 hereof.  It is  understood  and
            agreed that no  earthquake  or other  additional  insurance is to be
            required of any  Mortgagor  or  maintained  on property  acquired in
            respect of a Mortgage  other than pursuant to such  applicable  laws
            and  regulations  as  shall  at any  time be in  force  and as shall
            require such  additional  insurance.  If the  Mortgaged  Property is
            located  at the  time  of  origination  of the  Mortgage  Loan  in a
            federally  designated  special  flood  hazard  area and such area is
            participating  in the national flood insurance  program,  the Master
            Servicer shall cause flood  insurance to be maintained  with respect
            to such Mortgage Loan.  Such flood  insurance  shall be in an amount
            equal to the  least of (i) the  original  principal  balance  of the
            related   Mortgage  Loan,   (ii)  the   replacement   value  of  the
            improvements  which are part of such Mortgaged  Property,  and (iii)
            the  maximum  amount of such  insurance  available  for the  related
            Mortgaged Property under the national flood insurance program.

                                       54
<PAGE>

      (b)   In the event that the Master  Servicer  shall  obtain and maintain a
            blanket policy insuring against hazard losses on all of the Mortgage
            Loans,  it  shall  conclusively  be  deemed  to have  satisfied  its
            obligations as set forth in the first  sentence of this Section,  it
            being   understood  and  agreed  that  such  policy  may  contain  a
            deductible  clause  on  terms  substantially   equivalent  to  those
            commercially  available and maintained by comparable  servicers.  If
            such policy contains a deductible clause, the Master Servicer shall,
            in the  event  that  there  shall not have  been  maintained  on the
            related  Mortgaged  Property  a  policy  complying  with  the  first
            sentence  of this  Section,  and there  shall  have been a loss that
            would have been  covered by such policy,  deposit in the  applicable
            subaccount  of the  Certificate  Account  the amount  not  otherwise
            payable under the blanket policy because of such deductible  clause.
            In connection with its activities as Master Servicer of the Mortgage
            Loans,  the Master Servicer agrees to present,  on behalf of itself,
            the   Depositor,   and  the   Trustee   for  the   benefit   of  the
            Certificateholders, claims under any such blanket policy.

      (c)   The Master  Servicer shall not take any action which would result in
            non-coverage  under any applicable  Primary  Insurance Policy of any
            loss which, but for the actions of the Master  Servicer,  would have
            been covered  thereunder.  The Master  Servicer  shall not cancel or
            refuse to renew any such Primary  Insurance Policy that is in effect
            at the  date of the  initial  issuance  of the  Certificates  and is
            required  to be kept  in  force  hereunder  unless  the  replacement
            Primary Insurance Policy for such canceled or non-renewed  policy is
            maintained with a Qualified Insurer.

      The  Master  Servicer  shall  not be  required  to  maintain  any  Primary
Insurance  Policy (i) with  respect to any  Mortgage  Loan with a  Loan-to-Value
Ratio less than or equal to 80% as of any date of  determination  or, based on a
new  appraisal,  the principal  balance of such Mortgage Loan  represents 80% or
less of the new appraised  value or (ii) if maintaining  such Primary  Insurance
Policy is prohibited by applicable law.

      The Master Servicer agrees to effect the timely payment of the premiums on
each Primary Insurance Policy, and such costs not otherwise recoverable shall be
recoverable by the Master Servicer from the related liquidation proceeds.

      (d)   In connection with its activities as Master Servicer of the Mortgage
            Loans,  the Master  Servicer  agrees to present on behalf of itself,
            the Trustee and Certificateholders,  claims to the insurer under any
            Primary  Insurance  Policies  and,  in this  regard,  to  take  such
            reasonable action as shall be necessary to permit recovery under any
            Primary Insurance Policies respecting  defaulted Mortgage Loans. Any
            amounts collected by the Master Servicer under any Primary Insurance
            Policies  shall be deposited  in the  applicable  subaccount  of the
            Certificate Account.

                                       55
<PAGE>

      SECTION 3.10 Enforcement of Due-on-Sale Clauses; Assumption Agreements.

      (a)   Except as  otherwise  provided in this  Section,  when any  property
            subject to a Mortgage has been conveyed by the Mortgagor, the Master
            Servicer  shall  to  the  extent  that  it  has  knowledge  of  such
            conveyance, enforce any due-on-sale clause contained in any Mortgage
            Note or Mortgage,  to the extent  permitted under applicable law and
            governmental   regulations,   but  only  to  the  extent  that  such
            enforcement will not adversely  affect or jeopardize  coverage under
            any Required Insurance Policy.  Notwithstanding  the foregoing,  the
            Master Servicer is not required to exercise such rights with respect
            to a  Mortgage  Loan if the  Person  to whom the  related  Mortgaged
            Property has been  conveyed or is proposed to be conveyed  satisfies
            the terms and conditions contained in the Mortgage Note and Mortgage
            related thereto and the consent of the mortgagee under such Mortgage
            Note or Mortgage is not  otherwise so required  under such  Mortgage
            Note or Mortgage as a condition to such transfer.  In the event that
            the Master  Servicer is  prohibited  by law from  enforcing any such
            due-on-sale  clause,  or if coverage  under any  Required  Insurance
            Policy  would  be  adversely  affected,   or  if  nonenforcement  is
            otherwise  permitted  hereunder,  the Master Servicer is authorized,
            subject to Section 3.10(b),  to take or enter into an assumption and
            modification agreement from or with the person to whom such property
            has been or is about to be  conveyed,  pursuant to which such person
            becomes  liable under the Mortgage  Note and,  unless  prohibited by
            applicable state law, the Mortgagor remains liable thereon, provided
            that the Mortgage  Loan shall  continue to be covered (if so covered
            before the Master  Servicer enters such agreement) by the applicable
            Required Insurance Policies. The Master Servicer, subject to Section
            3.10(b),  is also authorized with the prior approval of the insurers
            under any Required  Insurance  Policies to enter into a substitution
            of  liability  agreement  with such  Person,  pursuant  to which the
            original  Mortgagor is released  from  liability  and such Person is
            substituted as Mortgagor and becomes liable under the Mortgage Note.
            Notwithstanding  the  foregoing,  the Master  Servicer  shall not be
            deemed to be in default under this Section by reason of any transfer
            or assumption  which the Master Servicer  reasonably  believes it is
            restricted by law from preventing, for any reason whatsoever.

      (b)   Subject to the Master  Servicer's  duty to enforce  any  due-on-sale
            clause to the  extent set forth in Section  3.10(a)  hereof,  in any
            case in which a Mortgaged  Property has been conveyed to a Person by
            a  Mortgagor,  and  such  Person  is to  enter  into  an  assumption
            agreement or  modification  agreement or  supplement to the Mortgage
            Note or Mortgage that  requires the signature of the Trustee,  or if
            an instrument of release signed by the Trustee is required releasing
            the  Mortgagor  from  liability  on the  Mortgage  Loan,  the Master
            Servicer  shall  prepare  and  deliver or cause to be  prepared  and
            delivered to the Trustee for signature and shall direct, in writing,
            the Trustee to execute the  assumption  agreement with the Person to
            whom the Mortgaged  Property is to be conveyed and such modification
            agreement or  supplement  to the Mortgage  Note or Mortgage or other
            instruments as are reasonable or necessary to carry out the terms of
            the  Mortgage  Note or  Mortgage  or  otherwise  to comply  with any
            applicable  laws  regarding  assumptions  or  the  transfer  of  the
            Mortgaged  Property  to such  Person.  In  connection  with any such
            assumption, no material term of the Mortgage Note may be changed. In
            addition,  the substitute  Mortgagor and the Mortgaged Property must
            be  acceptable  to  the  Master  Servicer  in  accordance  with  its
            underwriting  standards as then in effect.  Together  with each such
            substitution,  assumption or other agreement or instrument delivered

                                       56
<PAGE>

            to the  Trustee  for  execution  by it,  the Master  Servicer  shall
            deliver  an  Officer's  Certificate  signed by a  Servicing  Officer
            stating that the  requirements  of this  subsection have been met in
            connection  therewith.  The Master Servicer shall notify the Trustee
            that  any  such  substitution  or  assumption   agreement  has  been
            completed  by  forwarding  to  the  Trustee  the  original  of  such
            substitution  or  assumption  agreement,  which  in the  case of the
            original shall be added to the related  Mortgage File and shall, for
            all purposes, be considered a part of such Mortgage File to the same
            extent as all other  documents and  instruments  constituting a part
            thereof.  Any fee collected by the Master Servicer for entering into
            an  assumption  or  substitution  of  liability  agreement  will  be
            retained   by  the   Master   Servicer   as   additional   servicing
            compensation.

      SECTION 3.11  Realization  Upon Defaulted  Mortgage  Loans;  Repurchase of
Certain Mortgage Loans.

      The Master  Servicer  shall use  reasonable  efforts to foreclose  upon or
otherwise  comparably  convert the ownership of properties  securing such of the
Mortgage  Loans  as come  into  and  continue  in  default  and as to  which  no
satisfactory  arrangements can be made for collection of delinquent payments. In
connection with such foreclosure or other conversion,  the Master Servicer shall
follow such practices and procedures as it shall deem necessary or advisable and
as shall be normal and usual in its general  mortgage  servicing  activities and
meet the  requirements  of the  insurer  under any  Required  Insurance  Policy;
provided,  however, that the Master Servicer shall not be required to expend its
own funds in connection  with any  foreclosure or towards the restoration of any
property unless it shall determine (i) that such restoration  and/or foreclosure
will  increase  the  proceeds  of   liquidation   of  the  Mortgage  Loan  after
reimbursement  to itself of such  expenses and (ii) that such  expenses  will be
recoverable to it through Liquidation  Proceeds  (respecting which it shall have
priority for purposes of withdrawals from the Certificate  Account).  The Master
Servicer shall be responsible for all other costs and expenses incurred by it in
any  such  proceedings;   provided,  however,  that  it  shall  be  entitled  to
reimbursement  thereof from the liquidation proceeds with respect to the related
Mortgaged Property,  as provided in the definition of Liquidation  Proceeds.  If
the Master  Servicer has knowledge  that a Mortgaged  Property  which the Master
Servicer  is  contemplating  acquiring  in  foreclosure  or by  deed  in lieu of
foreclosure  is  located  within  a 1 mile  radius  of any  site  listed  in the
Expenditure Plan for the Hazardous  Substance Clean Up Bond Act of 1984 or other
site with  environmental  or hazardous waste risks known to the Master Servicer,
the Master Servicer will,  prior to acquiring the Mortgaged  Property,  consider
such risks and only take action in accordance with its established environmental
review procedures.

      With respect to any REO Property, the deed or certificate of sale shall be
taken in the name of the Trust Fund for the  benefit of the  Certificateholders,
or its nominee, on behalf of the  Certificateholders.  The Master Servicer shall
ensure that the title to such REO Property  references the Pooling and Servicing
Agreement and the Trust Fund's capacity  thereunder.  Pursuant to its efforts to
sell such REO Property,  the Master  Servicer  shall either itself or through an
agent selected by the Master Servicer  protect and conserve such REO Property in
the same manner and to such extent as is customary  in the  locality  where such
REO Property is located. The Master Servicer shall perform the tax reporting and
withholding  required  by  Sections  1445 and 6050J of the Code with  respect to
foreclosures and  abandonments,  the tax reporting  required by Section 6050H of
the Code with respect to the receipt of mortgage  interest from  individuals and
any tax  reporting  required  by Section  6050P of the Code with  respect to the
cancellation of indebtedness by certain  financial  entities,  by preparing such
tax and  information  returns  as may be  required,  in the form  required,  and
delivering the same to the Trustee for filing.

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<PAGE>

      In the event  that the Trust  Fund  acquires  any  Mortgaged  Property  as
aforesaid  or otherwise in  connection  with a default or imminent  default on a
Mortgage  Loan, the Master  Servicer  shall dispose of such  Mortgaged  Property
prior to the close of the third  taxable  year  after  the  taxable  year of its
acquisition  by the Trust Fund unless the Trustee  shall have been supplied with
an Opinion of Counsel to the effect  that the  holding by the Trust Fund of such
Mortgaged  Property  subsequent to such three-year period will not result in the
imposition  of taxes on  "prohibited  transactions"  of any REMIC  hereunder  as
defined in Section 860F of the Code or cause any REMIC created hereunder to fail
to  qualify as a REMIC at any time that any  Certificates  are  outstanding,  in
which case the Trust Fund may continue to hold such Mortgaged  Property (subject
to any  conditions  contained in such Opinion of Counsel).  Notwithstanding  any
other provision of this Agreement,  no Mortgaged  Property acquired by the Trust
Fund shall be rented (or allowed to continue to be rented) or otherwise used for
the  production  of income by or on behalf of the Trust Fund in such a manner or
pursuant  to any terms that would (i) cause such  Mortgaged  Property to fail to
qualify as "foreclosure  property"  within the meaning of Section  860G(a)(8) of
the Code or (ii) subject any REMIC  hereunder to the  imposition of any federal,
state or local income taxes on the income  earned from such  Mortgaged  Property
under Section  860G(c) of the Code or otherwise,  unless the Master Servicer has
agreed to  indemnify  and hold  harmless  the Trust  Fund  with  respect  to the
imposition of any such taxes.

      In the event of a default on a Mortgage  Loan one or more of whose obligor
is not a United States Person, as that term is defined in Section 7701(a)(30) of
the Code, in connection with any foreclosure or acquisition of a deed in lieu of
foreclosure  (together,  "foreclosure")  in respect of such Mortgage  Loan,  the
Master Servicer will cause compliance with the provisions of Treasury Regulation
Section  1.1445-2(d)(3)  (or any successor  thereto) necessary to assure that no
withholding  tax  obligation  arises  with  respect  to  the  proceeds  of  such
foreclosure  except to the extent, if any, that proceeds of such foreclosure are
required to be remitted to the obligors on such Mortgage Loan.

      The decision of the Master  Servicer to foreclose on a defaulted  Mortgage
Loan  shall be  subject  to a  determination  by the  Master  Servicer  that the
proceeds of such  foreclosure  would  exceed the costs and  expenses of bringing
such a proceeding.  The income earned from the management of any REO Properties,
net of reimbursement to the Master Servicer for expenses incurred (including any
property  or  other  taxes)  in  connection  with  such  management  and  net of
unreimbursed Master Servicing Fees,  Advances and Servicing  Advances,  shall be
applied to the payment of  principal  of and  interest on the related  defaulted
Mortgage Loans (with interest  accruing as though such Mortgage Loans were still
current)  and  all  such  income  shall  be  deemed,  for all  purposes  in this
Agreement,  to be payments on account of  principal  and interest on the related
Mortgage  Notes and shall be deposited  into the  applicable  subaccount  of the
Certificate  Account.  To the extent the net income received during any calendar
month is in  excess of the  amount  attributable  to  amortizing  principal  and
accrued  interest at the related  Mortgage Rate on the related Mortgage Loan for
such calendar month, such excess shall be considered to be a partial  prepayment
of principal of the related Mortgage Loan.

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<PAGE>

      The  proceeds  from any  liquidation  of a Mortgage  Loan,  as well as any
income from an REO Property, will be applied in the following order of priority:
first, to reimburse the Master Servicer for any related  unreimbursed  Servicing
Advances and Master Servicing Fees; second, to reimburse the Master Servicer for
any unreimbursed Advances;  third, to reimburse the applicable subaccount of the
Certificate  Account for any Nonrecoverable  Advances (or portions thereof) that
were previously withdrawn by the Master Servicer pursuant to Section 3.8(a)(iii)
that related to such Mortgage Loan;  fourth,  to accrued and unpaid interest (to
the extent no Advance has been made for such amount or any such Advance has been
reimbursed)  on the Mortgage Loan or related REO  Property,  at the Adjusted Net
Mortgage  Rate to the Due Date  occurring in the month in which such amounts are
required  to be  distributed;  and fifth,  as a  recovery  of  principal  of the
Mortgage Loan.  Excess  Proceeds,  if any, from the  liquidation of a Liquidated
Mortgage Loan will be retained by the Master  Servicer as  additional  servicing
compensation pursuant to Section 3.14.

      The Master Servicer, with the consent of the Trustee, shall have the right
to purchase for its own account  from the Trust Fund any Mortgage  Loan which is
91 days or more delinquent at a price equal to the Purchase Price.  The Purchase
Price for any  Mortgage  Loan  purchased  hereunder  shall be  deposited  in the
applicable  subaccount of the Certificate Account and the Trustee,  upon receipt
of a certificate from the Master Servicer in the form of Exhibit M hereto, shall
release or cause to be  released  to the  purchaser  of such  Mortgage  Loan the
related Mortgage File and shall execute and deliver such instruments of transfer
or  assignment  prepared by the  purchaser of such  Mortgage  Loan, in each case
without  recourse,  as  shall  be  necessary  to vest in the  purchaser  of such
Mortgage Loan any Mortgage Loan  released  pursuant  hereto and the purchaser of
such Mortgage Loan shall succeed to all the Trustee's right,  title and interest
in and to such  Mortgage Loan and all security and  documents  related  thereto.
Such  assignment  shall be an  assignment  outright  and not for  security.  The
purchaser of such Mortgage Loan shall  thereupon own such Mortgage Loan, and all
security and  documents,  free of any further  obligation  to the Trustee or the
Certificateholders with respect thereto.

      SECTION 3.12 Trustee to Cooperate; Release of Mortgage Files.

      Upon the  payment  in full of any  Mortgage  Loan,  or the  receipt by the
Master  Servicer of a  notification  that  payment in full will be escrowed in a
manner customary for such purposes,  the Master Servicer will immediately notify
the Trustee by  delivering,  or causing to be  delivered a "Request for Release"
substantially  in the form of  Exhibit  M. Upon  receipt  of such  request,  the
Trustee  shall or shall  cause the  Custodian  to  promptly  release the related
Mortgage  File to the  Master  Servicer,  and the  Trustee  shall at the  Master
Servicer's  direction execute and deliver to the Master Servicer the request for
reconveyance,  deed of  reconveyance  or release or  satisfaction of mortgage or
such instrument  releasing the lien of the Mortgage in each case provided by the
Master  Servicer,  together  with the  Mortgage  Note with  written  evidence of
cancellation  thereon.  Expenses  incurred in connection  with any instrument of
satisfaction  or  deed  of  reconveyance  shall  be  chargeable  to the  related
Mortgagor.  From time to time and as shall be  appropriate  for the servicing or
foreclosure of any Mortgage Loan,  including for such purpose,  collection under
any policy of flood insurance,  any fidelity bond or errors or omissions policy,
or for the purposes of  effecting a partial  release of any  Mortgaged  Property
from the lien of the Mortgage or the making of any  corrections  to the Mortgage
Note or the  Mortgage or any of the other  documents  included  in the  Mortgage
File, the Trustee  shall,  upon delivery to the Trustee of a Request for Release

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<PAGE>

in the form of Exhibit L signed by a Servicing  Officer,  release  the  Mortgage
File to the Master Servicer. Subject to the further limitations set forth below,
the Master Servicer shall cause the Mortgage File or documents so released to be
returned to the Trustee or its  Custodian  when the need  therefor by the Master
Servicer  no longer  exists,  unless the  Mortgage  Loan is  liquidated  and the
proceeds  thereof are deposited in the applicable  subaccount of the Certificate
Account,  in which  case the Master  Servicer  shall  deliver  to the  Trustee a
Request for Release in the form of Exhibit M, signed by a Servicing Officer.

      If the  Master  Servicer  at any time  seeks  to  initiate  a  foreclosure
proceeding in respect of any Mortgaged Property as authorized by this Agreement,
the Master  Servicer shall deliver or cause to be delivered to the Trustee,  for
signature, as appropriate,  any court pleadings,  requests for trustee's sale or
other  documents  necessary to effectuate  such  foreclosure or any legal action
brought to obtain  judgment  against the  Mortgagor on the Mortgage  Note or the
Mortgage or to obtain a deficiency  judgment or to enforce any other remedies or
rights  provided by the Mortgage Note or the Mortgage or otherwise  available at
law or in equity.

      SECTION 3.13 Documents  Records and Funds in Possession of Master Servicer
to be Held for the Trustee.

      Notwithstanding  any  other  provisions  of  this  Agreement,  the  Master
Servicer  shall  transmit  to the  Trustee as  required  by this  Agreement  all
documents  and  instruments  in  respect  of a  Mortgage  Loan  coming  into the
possession  of the Master  Servicer from time to time and shall account fully to
the Trustee for any funds received by the Master Servicer or which otherwise are
collected by the Master Servicer as Liquidation  Proceeds or Insurance  Proceeds
in respect of any Mortgage Loan. All Mortgage Files and funds  collected or held
by, or under the  control  of, the Master  Servicer  in respect of any  Mortgage
Loans,  whether from the  collection of principal and interest  payments or from
Liquidation Proceeds,  including but not limited to, any funds on deposit in the
Certificate  Account,  shall be held by the Master Servicer for and on behalf of
the  Trustee  and shall be and remain  the sole and  exclusive  property  of the
Trustee,  subject to the  applicable  provisions of this  Agreement.  The Master
Servicer  also agrees that it shall not  create,  incur or subject any  Mortgage
File or any funds that are deposited in the  Certificate  Account,  Distribution
Account or any Escrow Account, or any funds that otherwise are or may become due
or payable to the  Trustee  for the  benefit of the  Certificateholders,  to any
claim,  lien,  security  interest,  judgment,  levy, writ of attachment or other
encumbrance, or assert by legal action or otherwise any claim or right of setoff
against any Mortgage File or any funds  collected  on, or in connection  with, a
Mortgage Loan,  except,  however,  that the Master Servicer shall be entitled to
set off against and deduct from any such funds any amounts that are properly due
and payable to the Master Servicer under this Agreement.

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      SECTION 3.14 Master Servicing Compensation.

      As compensation  for its activities as Master Servicer  hereunder and as a
subservicer   pursuant  to  the  Servicing   Rights  Transfer  and  Subservicing
Agreement,  the Master Servicer shall be entitled to retain or withdraw from the
Certificate  Account  an  amount  equal  to the  Master  Servicing  Fee for each
Mortgage Loan,  provided that the aggregate Master Servicing Fee with respect to
any  Distribution  Date shall be reduced  (i) by the amount of any  Compensating
Interest paid by the Master Servicer with respect to such Distribution Date, and
(ii) with respect to the first  Distribution Date, an amount equal to any amount
to be  deposited  into the  Distribution  Account by the  Depositor  pursuant to
Section 2.1(a) and not so deposited.

      Additional  servicing  compensation  in the form of (i)  Excess  Proceeds,
Prepayment  Interest  Excess and all income and gain net of any losses  realized
from Permitted  Investments and (ii) prepayment  penalties,  assumption fees and
late payment charges in each case under the  circumstances and in the manner set
forth in the  applicable  Mortgage  Note or  Mortgage  shall be  retained by the
Master  Servicer to the extent not required to be  deposited in the  Certificate
Account pursuant to Section 3.5 hereof. The Master Servicer shall be required to
pay  all  expenses  incurred  by it in  connection  with  its  master  servicing
activities hereunder (including payment of any premiums for hazard insurance and
any Primary  Insurance  Policy and  maintenance  of the other forms of insurance
coverage  required by this Agreement) and shall not be entitled to reimbursement
therefor except as specifically provided in this Agreement.

      SECTION 3.15 Access to Certain Documentation.

      The  Master  Servicer  shall  provide  to the  OTS  and  the  FDIC  and to
comparable  regulatory  authorities   supervising  Holders  of  Certificates  or
Certificate Owners and the examiners and supervisory agents of the OTS, the FDIC
and such other authorities,  access to the documentation  regarding the Mortgage
Loans required by applicable  regulations  of the OTS and the FDIC.  Such access
shall be afforded  without  charge,  but only upon  reasonable and prior written
request and during normal business hours at the offices designated by the Master
Servicer.  Nothing in this  Section  shall  limit the  obligation  of the Master
Servicer to observe any  applicable  law  prohibiting  disclosure of information
regarding  the  Mortgagors  and the  failure of the Master  Servicer  to provide
access as  provided  in this  Section as a result of such  obligation  shall not
constitute a breach of this Section.

      SECTION 3.16 Annual Statement as to Compliance.

      The Master  Servicer  shall deliver to the Depositor and the Trustee on or
before 120 days after the end of the Master Servicer's  fiscal year,  commencing
with its 2005 fiscal year, an Officer's  Certificate  stating,  as to the signer
thereof,  that (i) a review of the activities of the Master  Servicer during the
preceding calendar year and of the performance of the Master Servicer under this
Agreement has been made under such officer's supervision and (ii) to the best of
such  officer's  knowledge,  based  on such  review,  the  Master  Servicer  has
fulfilled all its obligations under this Agreement  throughout such year, or, if
there has been a default in the fulfillment of any such  obligation,  specifying
each such default known to such officer and the nature and status  thereof.  The
Trustee shall forward a copy of each such statement to each Rating Agency.

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<PAGE>

      SECTION 3.17 Annual Independent Public Accountants'  Servicing  Statement;
Financial Statements.

      On or before 120 days after the end of the Master  Servicer's fiscal year,
commencing  with its 2005 fiscal year, the Master  Servicer at its expense shall
cause  a  nationally  or  regionally   recognized  firm  of  independent  public
accountants  (who may also render  other  services to the Master  Servicer,  the
Seller or any affiliate  thereof) which is a member of the American Institute of
Certified  Public  Accountants  to furnish a  statement  to the  Trustee and the
Depositor  to the effect  that-such  firm has  examined  certain  documents  and
records  relating to the servicing of the Mortgage Loans under this Agreement or
of mortgage loans under pooling and servicing agreements  substantially  similar
to this Agreement  (such statement to have attached  thereto a schedule  setting
forth the pooling and  servicing  agreements  covered  thereby) and that, on the
basis  of such  examination,  conducted  substantially  in  compliance  with the
Uniform Single Attestation Program for Mortgage Bankers or the Audit Program for
Mortgages  serviced for FNMA and FHLMC,  such  servicing  has been  conducted in
compliance  with  such  pooling  and  servicing   agreements   except  for  such
significant  exceptions  or errors in records that, in the opinion of such firm,
the Uniform Single Attestation Program for Mortgage Bankers or the Audit Program
for Mortgages  serviced for FNMA and FHLMC  requires it to report.  In rendering
such statement,  such firm may rely, as to matters  relating to direct servicing
of mortgage loans by Subservicers,  upon comparable  statements for examinations
conducted  substantially  in  compliance  with the  Uniform  Single  Attestation
Program for Mortgage  Bankers or the Audit  Program for  Mortgages  serviced for
FNMA and FHLMC  (rendered  within  one year of such  statement)  of  independent
public  accountants  with  respect to the  related  Subservicer.  Copies of such
statement  shall  be  provided  by  the  Trustee  to  any  Certificateholder  or
Certificate Owner upon request at the Master Servicer's  expense,  provided such
statement is delivered by the Master Servicer to the Trustee.

      SECTION 3.18 Errors and Omissions Insurance; Fidelity Bonds.

      The Master  Servicer shall for so long as it acts as master servicer under
this  Agreement,  obtain  and  maintain  in force  (a) a policy or  policies  of
insurance covering errors and omissions in the performance of its obligations as
Master  Servicer  hereunder  and (b) a fidelity bond in respect of its officers,
employees  and agents.  Each such policy or policies  and bond shall,  together,
comply  with the  requirements  from time to time of FNMA or FHLMC  for  persons
performing servicing for mortgage loans purchased by FNMA or FHLMC. In the event
that any such policy or bond ceases to be in effect,  the Master  Servicer shall
obtain a  comparable  replacement  policy or bond  from an  insurer  or  issuer,
meeting the requirements set forth above as of the date of such replacement.

      SECTION 3.19 Notification of Adjustments.

      On each  Adjustment  Date,  the Master  Servicer  shall make interest rate
adjustments  for each Mortgage Loan in compliance  with the  requirements of the
related  Mortgage  and  Mortgage  Note and  applicable  regulations.  The Master
Servicer  shall  execute and deliver the notices  required by each  Mortgage and
Mortgage Note and applicable  regulations  regarding  interest rate adjustments.
The Master Servicer also shall provide timely notification to the Trustee of all
applicable data and information regarding such interest rate adjustments and the
Master Servicer's methods of implanting such interest rate adjustments. Upon the
discovery  by the Master  Servicer or the Trustee  that the Master  Servicer has
failed  to adjust  or has  incorrectly  adjusted  a  Mortgage  Rate or a monthly
payment  pursuant to the terms of the related  Mortgage Note and  Mortgage,  the
Master Servicer shall  immediately  deposit in the Certificate  Account from its
own funds the amount of any interest loss caused thereby  without  reimbursement
therefor;  provided,  however,  the Master  Servicer shall be held harmless with
respect to any  interest  rate  adjustments  made by any  servicer  prior to the
Master Servicer.

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                                   ARTICLE IV
                DISTRIBUTIONS AND ADVANCES BY THE MASTER SERVICER

      SECTION 4.1 Advances.

      The Master  Servicer  shall  determine  on the  Business Day prior to each
Master Servicer  Advance Date whether it is required to make an Advance pursuant
to the definition  thereof.  If the Master Servicer determines it is required to
make an Advance, it shall, on or before the Master Servicer Advance Date, either
(i) deposit into the applicable  subaccount of the Certificate Account an amount
equal to the Advance or (ii) make an appropriate  entry in its records  relating
to the applicable subaccount of the Certificate Account that any Amount Held for
Future  Distribution  has been used by the Master  Servicer in  discharge of its
obligation to make any such  Advance.  Any funds so applied shall be replaced by
the Master  Servicer by deposit in the applicable  subaccount of the Certificate
Account no later than the close of business on the  Business Day  preceding  the
next Master  Servicer  Advance Date. The Master Servicer shall be entitled to be
reimbursed  from the applicable  subaccount of the  Certificate  Account for all
Advances of its own funds made  pursuant to this  Section as provided in Section
3.8. The  obligation  to make  Advances  with respect to any Mortgage Loan shall
continue  until  the  ultimate  disposition  of the REO  Property  or  Mortgaged
Property relating to such Mortgage Loan. As to any Distribution Date, the Master
Servicer  shall inform the Trustee in writing of the amount of the Advance to be
made by the Master Servicer on each Master  Servicer  Advance Date no later 1:30
p.m.  Central  time  on the  second  Business  Day  immediately  preceding  such
Distribution Date.

      The Master  Servicer  shall  deliver to the Trustee on the related  Master
Servicer Advance Date an Officer's Certificate of a Servicing Officer indicating
the amount of any proposed  Advance  determined  by the Master  Servicer to be a
Nonrecoverable Advance.

      SECTION 4.2 Priorities of Distribution.

      (a)   On each Distribution  Date, the Trustee shall withdraw the Available
            Funds for each Certificate  Group from the applicable  subaccount of
            the  Distribution  Account and apply such funds to  distributions on
            the Certificates of the related  Certificate  Group in the following
            order and  priority  and, in each case,  to the extent of  Available
            Funds remaining:

            (i)   to  the  Classes  of  Senior   Certificates   of  the  related
                  Certificate  Group, the Accrued  Certificate  Interest on each
                  such Class for such Distribution Date;

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<PAGE>

            (ii)  to  the  Classes  of  Senior   Certificates   of  the  related
                  Certificate  Group, any Accrued  Certificate  Interest thereon
                  remaining  undistributed from previous  Distribution Dates, to
                  the  extent of  remaining  Available  Funds  from the  related
                  Mortgage Pool;

            (iii) to  the  Classes  of  Senior   Certificates   of  the  related
                  Certificate Group, to the extent of remaining  Available Funds
                  from the related  Mortgage  Pool,  the related  Senior Optimal
                  Principal Amount for such  Distribution  Date and, in the case
                  of  the   Group  I  Senior   Certificates,   Group  II  Senior
                  Certificates and Group IV Senior Certificates, in the order of
                  priority  set forth  below in  Sections  4.2(b),  (c) and (d),
                  respectively,  until the respective Class Certificate Balances
                  thereof have been reduced to zero;

            (iv)  to the  Class B-1  Certificates,  to the  extent of  remaining
                  Available Funds for all of the Mortgage Pools,  but subject to
                  the prior payment of amounts  described  under Section 4.2(i),
                  in the following order: (1) the Accrued  Certificate  Interest
                  thereon   for  such   Distribution   Date,   (2)  any  Accrued
                  Certificate  Interest  thereon  remaining  undistributed  from
                  previous  Distribution  Dates  and (3) such  Class'  Allocable
                  Share for such Distribution Date;

            (v)   to the  Class B-2  Certificates,  to the  extent of  remaining
                  Available Funds for all of the Mortgage Pools,  but subject to
                  the prior payment of amounts  described  under Section 4.2(i),
                  in the following order: (1) the Accrued  Certificate  Interest
                  thereon   for  such   Distribution   Date,   (2)  any  Accrued
                  Certificate  Interest  thereon  remaining  undistributed  from
                  previous  Distribution  Dates  and (3) such  Class'  Allocable
                  Share for such Distribution Date;

            (vi)  to the  Class B-3  Certificates,  to the  extent of  remaining
                  Available Funds for all of the Mortgage Pools,  but subject to
                  the prior payment of amounts  described  under Section 4.2(i),
                  in the following order: (1) the Accrued  Certificate  Interest
                  thereon   for  such   Distribution   Date,   (2)  any  Accrued
                  Certificate  Interest  thereon  remaining  undistributed  from
                  previous  Distribution  Dates  and (3) such  Class'  Allocable
                  Share for such Distribution Date;

            (vii) to the  Class B-4  Certificates,  to the  extent of  remaining
                  Available Funds for all of the Mortgage Pools,  but subject to
                  the prior payment of amounts  described  under Section 4.2(i),
                  in the following order: (1) the Accrued  Certificate  Interest
                  thereon   for  such   Distribution   Date,   (2)  any  Accrued
                  Certificate  Interest  thereon  remaining  undistributed  from
                  previous  Distribution  Dates  and (3) such  Class'  Allocable
                  Share for such Distribution Date;

           (viii) to the Class B-5  Certificates,  to the  extent  of  remaining
                  Available Funds for all of the Mortgage Pools,  but subject to
                  the prior payment of amounts  described  under Section 4.2(i),
                  in the following order: (1) the Accrued  Certificate  Interest
                  thereon   for  such   Distribution   Date,   (2)  any  Accrued
                  Certificate  Interest  thereon  remaining  undistributed  from
                  previous  Distribution  Dates  and (3) such  Class'  Allocable
                  Share for such Distribution Date; and

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<PAGE>

            (ix)  to the  Class B-6  Certificates,  to the  extent of  remaining
                  Available Funds for all of the Mortgage Pools,  but subject to
                  the prior payment of amounts  described  under Section 4.2(i),
                  in the following order: (1) the Accrued  Certificate  Interest
                  thereon   for  such   Distribution   Date,   (2)  any  Accrued
                  Certificate  Interest  thereon  remaining  undistributed  from
                  previous  Distribution  Dates  and (3) such  Class'  Allocable
                  Share for such Distribution Date.

      (b)   Amounts  allocated  to the Group I Senior  Certificates  pursuant to
            Section 4.2(a)(iii) above will be distributed,  concurrently, to the
            Class  I-A-1 and Class  I-A-2  Certificates,  pro rata,  until their
            respective  Class  Certificate  Balances  have each been  reduced to
            zero.

      (c)   Amounts  allocated to the Group II Senior  Certificates  pursuant to
            Section 4.2(a)(iii) above will be distributed,  sequentially, in the
            following order of priority:

            (i)   to the Class II-A-R Certificates,  until the Class Certificate
                  Balance thereof has been reduced to zero; and

            (ii)  to the Class II-A-1  Certificates  until the Class Certificate
                  Balance thereof has been reduced to zero.

      (d)   Amounts  allocated to the Group IV Senior  Certificates  pursuant to
            Section 4.2(a)(iii) above will be distributed,  concurrently, to the
            Class IV-A-1, Class IV-A-2 and Class IV-A-3 Certificates,  pro rata,
            until their  respective  Class  Certificate  Balances have each been
            reduced to zero.

      (e)   On each  Distribution  Date,  the Trustee  shall  distribute  to the
            Holders  of  the  Class  II-A-R  Certificates  representing  the  RL
            Interest  and RU  Interest,  any  Available  Funds  remaining in the
            related REMIC created  hereunder  for such  Distribution  Date after
            application  of all amounts  described in clauses (a),  (b), (c) and
            (d)  of  this  Section  4.2.  Any  distributions  pursuant  to  this
            subsection  shall not  reduce the Class  Certificate  Balance of the
            Class II-A-R Certificates.

      (f)   On and after the Cross-Over  Date, the amount  distributable  to the
            Senior  Certificates  of the related  Certificate  Group pursuant to
            Section  4.2(a)(iii)  for the  related  Distribution  Date  shall be
            allocated  among the  related  Classes of Senior  Certificates,  pro
            rata, on the basis of their  respective Class  Certificate  Balances
            immediately  prior  to such  Distribution  Date,  regardless  of the
            priorities and amounts set forth in Section 4.2.

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      (g)   If on any Distribution Date (i) the Class Certificate Balance of any
            Class  of  Subordinated   Certificates  (other  than  the  Class  of
            Subordinated Certificates with the highest priority of distribution)
            for which the  related  Class  Prepayment  Distribution  Trigger was
            satisfied  on such  Distribution  Date is  reduced  to zero and (ii)
            amounts  distributable  to such  Class or  Classes  of  Subordinated
            Certificates  pursuant to clauses (2), (3) and (5) of the applicable
            Subordinated  Optimal Principal Amount remain  undistributed on such
            Distribution Date after all amounts otherwise  distributable on such
            date  pursuant to clauses (iv)  through (ix) of Section  4.2(a) have
            been  distributed,  such  amounts,  to the  extent  of  such  Class'
            remaining Allocable Share, shall be distributed on such Distribution
            Date to the remaining Classes of Subordinated  Certificates on a pro
            rata basis, subject to the priority of payments described in Section
            4.2(a).

      (h)   In the event that in any calendar month the Master Servicer recovers
            an amount (an "Unanticipated Recovery") in respect of principal of a
            Mortgage Loan which had previously been allocated as a Realized Loss
            to any  Class  of  Certificates  pursuant  to  Section  4.4,  on the
            Distribution Date in the next succeeding calendar month, the Trustee
            shall  withdraw the  Unanticipated  Recovery  from the  Distribution
            Account and sequentially increase, in order of payment priority, the
            Class  Certificate  Balance of each Class of  Certificates  to which
            such Realized Losses were previously allocated by the amount of such
            Unanticipated  Recovery,  but not to exceed the  amount of  Realized
            Losses  previously  allocated to such Class pursuant to Section 4.4,
            and shall  distribute the amount of such  Unanticipated  Recovery to
            each such Class of  Certificates  in the order of  payment  priority
            described in Section 4.2(a) of this Agreement.  Holders of any Class
            of  Certificates  for which the Class  Certificate  Balance has been
            increased by the amount of any  Unanticipated  Recovery  will not be
            entitled to any payment in respect of Accrued  Certificate  Interest
            on the amount of any such increase for any Interest  Accrual  Period
            preceding the Distribution Date on which such increase occurs.  When
            the Class  Certificate  Balance of a Class of Certificates  has been
            reduced to zero,  the Holders of such Class shall not be entitled to
            any  share of an  Unanticipated  Recovery,  and  such  Unanticipated
            Recovery  shall  be  allocated  among  all  outstanding  Classes  of
            Certificates  entitled  thereto  in  accordance  with the  preceding
            sentence,  subject to the remainder of this subsection. In the event
            that  (i)  any  Unanticipated   Recovery  remains  undistributed  in
            accordance  with the  preceding  sentence  or (ii) the  amount of an
            Unanticipated  Recovery  exceeds  the  amount of the  Realized  Loss
            previously  allocated to any outstanding Classes with respect to the
            related  Mortgage  Loan,  on the  applicable  Distribution  Date the
            Trustee shall distribute such Unanticipated Recoveries in accordance
            with the priorities set forth in Section 4.2(a).

      For purposes of the  preceding  paragraph,  the share of an  Unanticipated
Recovery  allocable to any Class of Certificates with respect to a Mortgage Loan
shall be based on its pro rata  share (in  proportion  to the Class  Certificate
Balances  thereof  with  respect  to such  Distribution  Date) of the  principal
portion of any such  Realized  Loss  previously  allocated  with respect to such
Mortgage Loan (or Loans).

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(i)   On any  Distribution  Date on which any Certificate  Group  constitutes an
      Undercollateralized   Group,  all  amounts   otherwise   distributable  as
      principal on the Subordinated  Certificates,  in reverse order of priority
      (or,  following the Cross-over  Date, such other amounts  described in the
      immediately  following sentence),  will be distributed as principal to the
      Senior Certificates of such  Undercollateralized  Group in accordance with
      the priorities set forth in Section 4.2(b), (c) and (d) in the case of the
      Group I Senior  Certificates,  Group II Senior  Certificates  and Group IV
      Senior  Certificates,  respectively,  until  the total  Class  Certificate
      Balance of such Senior  Certificates (after giving effect to distributions
      to be made on that Distribution  Date) equals the Stated Principal Balance
      of    the    related    Mortgage    Pool    (such     distribution,     an
      "Undercollateralization  Distribution").  If the Senior  Certificates of a
      Certificate   Group  constitute  an   Undercollateralized   Group  on  any
      Distribution  Date following the Cross-over  Date,  Undercollateralization
      Distributions  will be made from the excess of the Available Funds for the
      Mortgage Pools not related to an Undercollateralized Group remaining after
      all required amounts for that  Distribution  Date have been distributed to
      the Senior Certificates of such other Certificate Groups. In addition, the
      amount of any unpaid  Accrued  Certificate  Interest  with  respect to any
      Undercollateralized  Group on any Distribution Date (including any Accrued
      Certificate   Interest  for  the  related   Distribution   Date)  will  be
      distributed to the Senior Certificates of such  Undercollateralized  Group
      prior to the  payment  of any  Undercollateralization  Distributions  from
      amounts   otherwise   distributable   as  principal  on  the  Subordinated
      Certificates,  in reverse order of priority (or,  following the Cross-over
      Date, as provided in the preceding sentence). Except as provided otherwise
      in this Section  4.2(i),  no distribution of principal will be made to any
      Class of Subordinated  Certificates until an Undercollateralized  Group is
      no longer undercollateralized.  If more than one Undercollateralized Group
      on  any  Distribution  Date  is  entitled  to  an   Undercollateralization
      Distribution, such Undercollateralization  Distribution shall be allocated
      among the Undercollateralized Groups, pro rata, on the basis of the amount
      by which the aggregate  Class  Certificate  Balance of the related  Senior
      Certificates is greater than the aggregate Stated Principal Balance of the
      Mortgage Loans in the related Undercollateralized Groups. If more than one
      Certificate  Group  on any  Distribution  Date  is  required  to  make  an
      Undercollateralization  Distribution to an Undercollateralized  Group, the
      payment of such  Undercollateralization  Distributions  shall be allocated
      among such  Certificate  Groups,  pro rata,  on the basis of the aggregate
      Class Certificate Balance of the related Senior Certificates.

      In  addition,  if on any  Distribution  Date the total  Class  Certificate
      Balance of the Senior  Certificates  of a Certificate  Group (after giving
      effect to  distributions  to be made on that  Distribution  Date) has been
      reduced to zero,  all amounts  otherwise  distributable  as prepayments of
      principal to the Subordinated Certificates,  in reverse order of priority,
      will instead be distributed as principal to the Senior Certificates of the
      other  Certificate  Groups pro rata, on the basis of the  aggregate  Class
      Certificate  Balance of the related  Senior  Certificates,  unless (a) the
      weighted average of the  Subordinated  Percentages for the Mortgage Pools,

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      weighted  on the basis of the Stated  Principal  Balance  of the  Mortgage
      Loans in the related  Mortgage  Pool,  is at least two times the  weighted
      average of the  initial  Subordinate  Percentage  for the  Mortgage  Pools
      (calculated on such basis) and (b) the aggregate Stated Principal  Balance
      of all of the Mortgage Loans in the Mortgage  Pools  delinquent 60 days or
      more (including for this purpose any such Mortgage Loans in foreclosure or
      subject to bankruptcy proceedings and Mortgage Loans with respect to which
      the related  Mortgaged  Property  has been  acquired  by the Trust  Fund),
      averaged over the preceding six month period,  as a percentage of the then
      current   aggregate  Class   Certificate   Balance  of  the   Subordinated
      Certificates,  is less than  50%.  Except as  provided  otherwise  in this
      Section  4.2(i),  all  distributions  described  above  will  be  made  in
      accordance with the priorities set forth in Section  4.2(a),  (b), (c) and
      (d).

      SECTION 4.3 Method of Distribution.

      (a)   All distributions with respect to each Class of Certificates on each
            Distribution  Date  shall  be made pro rata  among  the  outstanding
            Certificates of such Class, based on the Percentage Interest in such
            Class   represented   by   each   Certificate.   Payments   to   the
            Certificateholders  on each  Distribution  Date  will be made by the
            Trustee to the  Certificateholders  of record on the related  Record
            Date by check or money order  mailed to a  Certificateholder  at the
            address  appearing  in the  Certificate  Register,  or upon  written
            request by such Certificateholder to the Trustee made not later than
            the  applicable  Record Date, by wire transfer to a U.S.  depository
            institution  acceptable  to the  Trustee,  or by such other means of
            payment as such Certificateholder and the Trustee shall agree.

      (b)   Each distribution with respect to a Book-Entry  Certificate shall be
            paid to the  Depository,  which  shall  credit  the  amount  of such
            distribution  to the  accounts  of its  Depository  Participants  in
            accordance with its normal procedures.  Each Depository  Participant
            shall  be  responsible  for  disbursing  such  distribution  to  the
            Certificate   Owners  that  it  represents  and  to  each  financial
            intermediary  for  which  it  acts as  agent.  Each  such  financial
            intermediary  shall  be  responsible  for  disbursing  funds  to the
            Certificate  Owners  that  it  represents.   All  such  credits  and
            disbursements  with  respect to a Book-Entry  Certificate  are to be
            made by the Depository and the Depository Participants in accordance
            with the  provisions  of the  applicable  Certificates.  Neither the
            Trustee  nor the  Master  Servicer  shall  have  any  responsibility
            therefor except as otherwise provided by applicable law.

      (c)   The Trustee  shall  withhold or cause to be withheld such amounts as
            it  reasonably  determines  are  required by the Code  (giving  full
            effect to any exemptions from withholding and related certifications
            required to be furnished by Certificateholders or Certificate Owners
            and any  reductions  to  withholding  by virtue of any bilateral tax
            treaties and any applicable  certification  required to be furnished
            by  Certificateholders  or Certificate  Owners with respect thereto)
            from  distributions to be made to Non-U.S.  Persons.  If the Trustee
            reasonably  determines  that a more  accurate  determination  of the
            amount required to be withheld for a distribution can be made within

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<PAGE>

            a reasonable period after the scheduled date for such  distribution,
            it may hold such  distribution  in trust for a Holder of a  Residual
            Certificate  until such  determination can be made. For the purposes
            of this paragraph,  a "Non-U.S.  Person" is (i) an individual  other
            than a citizen or resident of the United States, (ii) a partnership,
            corporation or entity  treated as a partnership  or corporation  for
            U.S.  federal  income tax  purposes not formed under the laws of the
            United  States,  any  state  thereof  or the  District  of  Columbia
            (unless, in the case of a partnership,  Treasury regulations provide
            otherwise),  (iii) any estate, the income of which is not subject to
            U.S.  federal income  taxation,  regardless of source,  and (iv) any
            trust,  other than a trust that a court within the United  States is
            able to exercise primary  supervision over the administration of the
            trust and one or more U.S. Persons have the authority to control all
            substantial decisions of the trust.

      SECTION 4.4 Allocation of Losses.

(a)   On or  prior  to  each  Determination  Date,  the  Master  Servicer  shall
      determine the amount of any Realized Loss in respect of each Mortgage Loan
      that occurred during the immediately preceding calendar month.

(b)   With  respect to any  Distribution  Date,  the  principal  portion of each
      Realized Loss (other than any Excess Loss) with respect to a Mortgage Pool
      shall be allocated in the following order of priority:

      (i)   to the Class B-6 Certificates  until the Class  Certificate  Balance
            thereof has been reduced to zero;

      (ii)  to the Class B-5 Certificates  until the Class  Certificate  Balance
            thereof has been reduced to zero;

      (iii) to the Class B-4 Certificates  until the Class  Certificate  Balance
            thereof has been reduced to zero;

      (iv)  to the Class B-3 Certificates  until the Class  Certificate  Balance
            thereof has been reduced to zero;

      (v)   to the Class B-2 Certificates  until the Class  Certificate  Balance
            thereof has been reduced to zero;

      (vi)  to the Class B-1 Certificates  until the Class  Certificate  Balance
            thereof has been reduced to zero;

      (vii) to the Classes of Senior  Certificates  of the  related  Certificate
            Group,  pro  rata,  in  accordance  with  their  Class   Certificate
            Balances;  provided, that from and after the Cross-over Date (a) the
            principal  portion of Realized  Losses (other than Excess Losses) on
            the Mortgage Loans  allocable to the Class I-A-1  Certificates  will
            instead be borne  first by the Class  I-A-2  Certificates  until its

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<PAGE>

            Class  Certificate  Balance is reduced to zero (in addition to other
            Realized Losses allocable to the Class I-A-2 Certificates),  and not
            by  the  Class  I-A-1  Certificates,   for  so  long  as  the  Class
            Certificate  Balance of the Class I-A-2 Certificates is greater than
            zero, and (b) the principal  portion of Realized  Losses (other than
            Excess Losses) on the Mortgage  Loans  allocable to the Class IV-A-2
            Certificates  will  instead  be  borne  first  by the  Class  IV-A-3
            Certificates until its Class Certificate  Balance is reduced to zero
            (in addition to other Realized Losses  allocable to the Class IV-A-3
            Certificates), and not by the Class IV-A-2 Certificates, for so long
            as the Class Certificate Balance of the Class IV-A-3 Certificates is
            greater than zero.

(c)   With respect to any Distribution Date, the principal portion of any Excess
      Loss with respect to a Mortgage Pool (other than Excess  Bankruptcy Losses
      attributable  to Debt Service  Reductions)  shall be allocated pro rata to
      each Class of Certificates of the related Certificate Group based on their
      respective  Class  Certificate   Balances  (in  the  case  of  the  Senior
      Certificates)  or  Apportioned  Principal  Balances  (in  the  case of the
      Subordinated Certificates).

(d)   Any  Realized  Losses  allocated  to a Class of  Certificates  pursuant to
      Section 4.4(b) or (c) shall be allocated  among the  Certificates  of such
      Class in proportion to their respective  Certificate  Principal  Balances.
      Any allocation of Realized  Losses pursuant to this paragraph (d) shall be
      accomplished by reducing the Certificate Principal Balances of the related
      Certificates on the related  Distribution  Date in accordance with Section
      4.4(e).

(e)   Realized  Losses  allocated in  accordance  with this Section 4.4 shall be
      allocated on the  Distribution  Date in the month  following  the month in
      which such loss was  incurred  and, in the case of the  principal  portion
      thereof,   after  giving  effect  to  the   distributions   made  on  such
      Distribution Date.

(f)   On each  Distribution  Date,  the  Master  Servicer  shall  determine  the
      Subordinated  Certificate  Writedown Amount, if any. Any such Subordinated
      Certificate  Writedown  Amount shall effect,  without  duplication  of any
      other  provision in this Section 4.4 that  provides for a reduction in the
      Class   Certificate   Balance   of  the   Subordinated   Certificates,   a
      corresponding   reduction  in  the  Class   Certificate   Balance  of  the
      Subordinated   Certificates,   which   reduction   shall   occur  on  such
      Distribution  Date  after  giving  effect  to  distributions  made on such
      Distribution Date.

(g)   Notwithstanding  the  foregoing,  no such  allocation of any Realized Loss
      shall be made on a  Distribution  Date to a Class of  Certificates  to the
      extent that such allocation would result in the reduction of the aggregate
      Class  Certificate  Balances of all the Senior  Certificates  of a related
      Certificate  Group  as of such  Distribution  Date  plus  the  Apportioned
      Principal  Balances of the  Subordinated  Certificates of such Certificate
      Group  as  of  such   Distribution   Date,  after  giving  effect  to  all
      distributions and prior allocations of Realized Losses on such date, to an
      amount less than the aggregate  Stated  Principal  Balance of the Mortgage
      Loans in the  related  Mortgage  Pool as of the  first day of the month of
      such  Distribution  Date,  less any Deficient  Valuations  occurring on or
      prior to the Bankruptcy  Coverage  Termination Date (such limitation,  the
      "Loss Allocation Limitation").

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      SECTION 4.5 [RESERVED]

      SECTION 4.6 Monthly Statements to Certificateholders.

(a)   Not later than each Distribution Date, the Trustee shall prepare and cause
      to be forwarded by first class mail to each Certificateholder,  the Master
      Servicer,  the Depositor and each Rating Agency a statement  setting forth
      with respect to the related distribution and/or may post such statement on
      its website located at www.mbsreporting.com:

      (i)   the amount thereof  allocable to principal,  separately  identifying
            the aggregate  amount of any Principal  Prepayments  and Liquidation
            Proceeds included therein;

      (ii)  the  amount  thereof  allocable  to  interest,  the  amount  of  any
            Compensating   Interest   included  in  such  distribution  and  any
            remaining  Net  Interest  Shortfalls  after  giving  effect  to such
            distribution;

      (iii) if the  distribution to the Holders of such Class of Certificates is
            less  than the full  amount  that  would  be  distributable  to such
            Holders if there  were  sufficient  funds  available  therefor,  the
            amount  of the  shortfall  and the  allocation  thereof  as  between
            principal and interest;

      (iv)  the Class  Certificate  Balance of each Class of Certificates  after
            giving effect to the distribution of principal on such  Distribution
            Date;

      (v)   the Pool Principal  Balance for each Mortgage Pool for the following
            Distribution Date;

      (vi)  the  Senior   Percentage  and   Subordinated   Percentage  for  each
            Certificate Group for the following Distribution Date;

      (vii) the amount of the Master  Servicing  Fees paid to or retained by the
            Master Servicer with respect to such Distribution Date;

      (viii) the  Pass-Through  Rate for each such  Class of  Certificates  with
            respect to such Distribution Date;

      (ix)  the  amount of  Advances  for each  Mortgage  Pool  included  in the
            distribution on such  Distribution  Date and the aggregate amount of
            Advances  for each  Mortgage  Pool  outstanding  as of the  close of
            business on such Distribution Date;

      (x)   the number and  aggregate  principal  amounts of Mortgage  Loans (A)
            delinquent  (exclusive of Mortgage Loans in foreclosure) (1) 1 to 30
            days (2) 31 to 60 days (3) 61 to 90 days and (4) 91 or more days and
            (B) in foreclosure and delinquent (1) 1 to 30 days (2) 31 to 60 days
            (3) 61 to 90 days  and  (4) 91 or  more  days,  as of the  close  of
            business  on the  last  day of the  calendar  month  preceding  such
            Distribution Date;

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<PAGE>

      (xi)  with respect to any Mortgage  Loan in a Mortgage Pool that became an
            REO Property during the preceding  calendar  month,  the loan number
            and Stated  Principal  Balance of such Mortgage Loan as of the close
            of business on the  Determination  Date preceding such  Distribution
            Date and the date of acquisition thereof;

      (xii) the total number and principal  balance of any REO  Properties  (and
            market value, if available) in each Mortgage Pool as of the close of
            business on the Determination Date preceding such Distribution Date;

     (xiii) the Senior Prepayment Percentage for each Certificate Group for  the
            following Distribution Date;

      (xiv) the aggregate  amount of Realized Losses incurred in respect of each
            Mortgage Pool during the preceding calendar month;

      (xv)  the cumulative amount of Realized Losses applied in reduction of the
            principal  balance of each class of  Certificates  since the Closing
            Date;

      (xvi) the Special  Hazard Loss  Coverage  Amount,  the Fraud Loss Coverage
            Amount and the Bankruptcy Loss Coverage  Amount,  in each case as of
            the related Determination Date; and

     (xvii) with  respect  to the  second  Distribution  Date,  the  number  and
            aggregate balance of any Delay Delivery Mortgage Loans not delivered
            within thirty days after the Closing Date.

(b)   The Trustee's  responsibility  for disbursing the above information to the
      Certificateholders is limited to the availability, timeliness and accuracy
      of the information provided by the Master Servicer.

(c)   On or before the fifth  Business Day following the end of each  Prepayment
      Period  (but in no event  later than the third  Business  Day prior to the
      related  Distribution  Date),  the Master  Servicer  shall  deliver to the
      Trustee (which delivery may be by electronic  data  transmission) a report
      in substantially the form set forth as Schedule III hereto.

(d)   Within a reasonable  period of time after the end of each  calendar  year,
      the  Trustee  shall cause to be  furnished  to each Person who at any time
      during the calendar year was a  Certificateholder,  a statement containing
      the information set forth in clauses (a)(i),  (a)(ii) and (a)(vii) of this
      Section  4.6  aggregated  for such  calendar  year or  applicable  portion
      thereof during which such Person was a Certificateholder.  Such obligation
      of the Trustee  shall be deemed to have been  satisfied to the extent that
      substantially  comparable  information  shall be  provided  by the Trustee
      pursuant to any requirements of the Code as from time to time in effect.

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                                   ARTICLE V
                                THE CERTIFICATES

      SECTION 5.1 The Certificates.

      The  Certificates  shall be  substantially in the forms attached hereto as
exhibits.  The Certificates shall be issuable in registered form, in the minimum
denominations, integral multiples in excess thereof (except that one Certificate
in each Class may be issued in a different amount which must be in excess of the
applicable minimum denomination) and aggregate denominations per Class set forth
in the Preliminary Statement.

      Subject to Section 9.2 hereof  respecting  the final  distribution  on the
Certificates,  on each Distribution Date the Trustee shall make distributions to
each Certificateholder of record on the preceding Record Date either (x) by wire
transfer in immediately  available funds to the account of such Holder at a bank
or other entity having appropriate  facilities therefor,  if (i) such Holder has
so notified the Trustee at least five Business Days prior to the related  Record
Date and (ii) such Holder shall hold (A) 100% of the Class  Certificate  Balance
of any Class of  Certificates  or (B)  Certificates  of any Class with aggregate
principal  Denominations  of not less than  $1,000,000 or (y) by check mailed by
first  class  mail to  such  Certificateholder  at the  address  of such  Holder
appearing in the Certificate Register.

      The  Certificates  shall be executed by manual or  facsimile  signature on
behalf of the Trustee by an authorized officer.  Certificates bearing the manual
or  facsimile  signatures  of  individuals  who  were,  at the  time  when  such
signatures were affixed,  authorized to sign on behalf of the Trustee shall bind
the Trustee, notwithstanding that such individuals or any of them have ceased to
be so authorized prior to the countersignature and delivery of such Certificates
or did not hold such  offices at the date of such  Certificate.  No  Certificate
shall be  entitled  to any  benefit  under this  Agreement,  or be valid for any
purpose,  unless  countersigned  by the  Trustee by manual  signature,  and such
countersignature upon any Certificate shall be conclusive evidence, and the only
evidence,  that such Certificate has been duly executed and delivered hereunder.
All  Certificates  shall be dated  the  date of their  countersignature.  On the
Closing Date, the Trustee shall countersign the Certificates to be issued at the
direction of the Depositor, or any affiliate thereof.

      The Depositor shall provide, or cause to be provided,  to the Trustee on a
continuous basis, an adequate inventory of Certificates to facilitate transfers.

      SECTION 5.2 Certificate Register; Registration of Transfer and Exchange of
Certificates.

      (a)   The Trustee shall maintain,  or cause to be maintained in accordance
            with the  provisions of Section 5.6 hereof,  a Certificate  Register
            for  the  Trust  Fund  in  which,   subject  to  the  provisions  of
            subsections (b) and (c) below and to such reasonable  regulations as
            it may prescribe,  the Trustee shall provide for the registration of
            Certificates  and of  transfers  and  exchanges of  Certificates  as
            herein provided.  Upon surrender for registration of transfer of any
            Certificate,  the Trustee shall execute and deliver,  in the name of
            the  designated   transferee  or   transferees,   one  or  more  new
            Certificates of the same Class and aggregate Percentage Interest.

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<PAGE>

      At the option of a  Certificateholder,  Certificates  may be exchanged for
other Certificates of the same Class in authorized  denominations and evidencing
the same aggregate  Percentage Interest upon surrender of the Certificates to be
exchanged at the office or agency of the Trustee.  Whenever any Certificates are
so  surrendered  for exchange,  the Trustee  shall  execute,  authenticate,  and
deliver the  Certificates  which the  Certificateholder  making the  exchange is
entitled to receive. Every Certificate presented or surrendered for registration
of transfer or exchange shall be accompanied by a written instrument of transfer
in form  satisfactory  to the Trustee duly executed by the Holder thereof or his
attorney duly authorized in writing.

      No  service  charge  to the  Certificateholders  shall  be  made  for  any
registration  of  transfer or  exchange  of  Certificates,  but payment of a sum
sufficient  to cover  any tax or  governmental  charge  that may be  imposed  in
connection with any transfer or exchange of Certificates may be required.

      All  Certificates  surrendered  for  registration  of transfer or exchange
shall be cancelled and subsequently  destroyed by the Trustee in accordance with
the Trustee's customary procedures.

(b)   No transfer of a Private Certificate shall be made unless such transfer is
      made pursuant to an effective  registration statement under the Securities
      Act  and any  applicable  state  securities  laws or is  exempt  from  the
      registration  requirements  under said Act and such state securities laws.
      In the event that a transfer is to be made in reliance  upon an  exemption
      from the Securities Act and such laws, in order to assure  compliance with
      the Securities Act and such laws, the Certificateholder desiring to effect
      such transfer and such  Certificateholder's  prospective  transferee shall
      each certify to the Trustee in writing the facts  surrounding the transfer
      in  substantially  the  forms  set  forth in  Exhibit  I (the  "Transferor
      Certificate") and (i) deliver a letter in substantially the form of either
      Exhibit J (the "Investment  Letter") or Exhibit K (the "Rule 144A Letter")
      or (ii) there  shall be  delivered  to the  Trustee at the  expense of the
      transferor  an Opinion of Counsel that such  transfer may be made pursuant
      to an exemption  from the Securities  Act. The Depositor  shall provide to
      any  Holder  of a  Private  Certificate  and  any  prospective  transferee
      designated  by  any  such  Holder,   information   regarding  the  related
      Certificates and the Mortgage Loans and such other information as shall be
      necessary  to  satisfy  the  condition  to  eligibility  set forth in Rule
      144A(d)(4)  for  transfer  of any such  Certificate  without  registration
      thereof under the  Securities Act pursuant to the  registration  exemption
      provided by Rule 144A. The Trustee and the Master Servicer shall cooperate
      with the  Depositor in providing the Rule 144A  information  referenced in
      the  preceding  sentence,   including  providing  to  the  Depositor  such
      information  regarding  the  Certificates,  the  Mortgage  Loans and other

                                       74
<PAGE>

      matters regarding the Trust Fund as the Depositor shall reasonably request
      to meet its  obligation  under the  preceding  sentence.  Each Holder of a
      Private  Certificate  desiring to effect  such  transfer  shall,  and does
      hereby agree to,  indemnify the Trustee and the Depositor,  the Seller and
      the Master Servicer  against any liability that may result if the transfer
      is not so exempt or is not made in accordance  with such federal and state
      laws.

      No transfer of an  ERISA-Restricted  Certificate  shall be made unless the
Trustee shall have received a Transferor Certificate from the related transferor
and  either  (i) a  representation  from  the  transferee  of  such  Certificate
acceptable  to and in form and  substance  satisfactory  to the  Trustee (in the
event such Certificate is a Private  Certificate,  such requirement is satisfied
only by the Trustee's  receipt of a  representation  letter from the  transferee
substantially  in the form of Exhibit J or Exhibit  K), to the effect  that such
transferee is not an employee benefit plan or arrangement subject to Section 406
of ERISA or a plan or  arrangement  subject to Section  4975 of the Code,  nor a
person acting on behalf of any such plan or arrangement, nor using the assets of
any such plan or  arrangement  to effect  such  transfer,  (ii) in the case of a
Private  Certificate (that has been subject to an ERISA-Qualified  Underwriting)
or a  Residual  Certificate,  if  the  purchaser  is  an  insurance  company,  a
representation  that the  purchaser is an insurance  company which is purchasing
such Certificates with funds contained in an "insurance company general account"
(as such  term is  defined  in  Section  V(e) of  Prohibited  Transaction  Class
Exemption  95-60  ("PTCE  95-60"))  and that the  purchase  and  holding of such
Certificates  are covered under Sections I and III of PTCE 95-60 or (iii) in the
case of any such ERISA-Restricted  Certificate presented for registration in the
name of an employee  benefit  plan  subject to ERISA,  or a plan or  arrangement
subject to Section 4975 of the Code (or comparable  provisions of any subsequent
enactments),  or a trustee of any such plan or any other person acting on behalf
of any such plan or arrangement,  or using such plan's or arrangement's  assets,
an Opinion of Counsel  satisfactory  to the  Trustee,  which  Opinion of Counsel
shall not be an  expense  of either  the  Trustee,  the  Depositor,  the  Master
Servicer  or the Trust  Fund,  addressed  to the  Trustee to the effect that the
purchase  or holding  of such  ERISA-Restricted  Certificate  will not result in
prohibited  transactions under Section 406 of ERISA and Section 4975 of the Code
and will not subject the Trustee,  the  Depositor or the Master  Servicer to any
obligation in addition to those expressly undertaken in this Agreement or to any
liability.  Notwithstanding  anything else to the contrary herein, any purported
transfer  of an  ERISA-Restricted  Certificate  to or on behalf  of an  employee
benefit plan subject to ERISA or to the Code without the delivery to the Trustee
of an Opinion of Counsel satisfactory to the Trustee as described above shall be
void and of no effect.

      To the extent permitted under  applicable law (including,  but not limited
to,  ERISA),  the  Trustee  shall be under no  liability  to any  Person for any
registration of transfer of any ERISA-Restricted Certificate that is in fact not
permitted  by  this  Section  5.2(b)  or for  making  any  payments  due on such
Certificate  to the Holder  thereof or taking any other  action with  respect to
such Holder under the  provisions of this  Agreement so long as the transfer was
registered by the Trustee in accordance with the foregoing requirements.

                                       75
<PAGE>

(c)   Each Person who has or who acquires any  Ownership  Interest in a Residual
      Certificate  shall be  deemed by the  acceptance  or  acquisition  of such
      Ownership Interest to have agreed to be bound by the following provisions,
      and the  rights of each  Person  acquiring  any  Ownership  Interest  in a
      Residual Certificate are expressly subject to the following provisions:

      (i)   Each  Person  holding  or  acquiring  any  Ownership  Interest  in a
            Residual  Certificate  shall be a  Permitted  Transferee  and  shall
            promptly notify the Trustee of any change or impending change in its
            status as a Permitted Transferee.

      (ii)  No Ownership Interest in a Residual Certificate may be registered on
            the Closing Date or  thereafter  transferred,  and the Trustee shall
            not register the Transfer of any  Residual  Certificate  unless,  in
            addition to the certificates required to be delivered to the Trustee
            under  subparagraph (b) above, the Trustee shall have been furnished
            with an affidavit (a "Transfer  Affidavit")  of the initial owner or
            the proposed transferee in the form attached hereto as Exhibit H.

      (iii) Each  Person  holding  or  acquiring  any  Ownership  Interest  in a
            Residual  Certificate shall agree (A) to obtain a Transfer Affidavit
            from any other  Person to whom such Person  attempts to Transfer its
            Ownership  Interest  in a  Residual  Certificate,  (B) to  obtain  a
            Transfer Affidavit from any Person for whom such Person is acting as
            nominee,  trustee  or agent in  connection  with any  Transfer  of a
            Residual  Certificate and (C) not to Transfer its Ownership Interest
            in a Residual  Certificate  or to cause the Transfer of an Ownership
            Interest  in a Residual  Certificate  to any other  Person if it has
            actual knowledge that such Person is not a Permitted Transferee.

      (iv)  Any attempted or purported  Transfer of any Ownership  Interest in a
            Residual  Certificate in violation of the provisions of this Section
            5.2(c) shall be absolutely null and void and shall vest no rights in
            the purported Transferee. If any purported transferee shall become a
            Holder of a Residual  Certificate  in violation of the provisions of
            this Section 5.2(c),  then the last preceding  Permitted  Transferee
            shall be restored to all rights as Holder thereof retroactive to the
            date of registration of Transfer of such Residual  Certificate.  The
            Trustee   shall  be  under  no  liability  to  any  Person  for  any
            registration of Transfer of a Residual  Certificate  that is in fact
            not  permitted  by  Section  5.2(b) and this  Section  5.2(c) or for
            making any payments due on such Certificate to the Holder thereof or
            taking  any other  action  with  respect  to such  Holder  under the
            provisions of this  Agreement so long as the Transfer was registered
            after  receipt  of  the  related  Transfer   Affidavit,   Transferor
            Certificate and, in the case of a Residual Certificate which is also
            a Private Certificate, either the Rule 144A Letter or the Investment
            Letter.  The Trustee  shall be entitled but not obligated to recover
            from any  Holder of a  Residual  Certificate  that was in fact not a
            Permitted  Transferee  at the time it  became a Holder  or,  at such
            subsequent time as it became other than a Permitted Transferee,  all
            payments made on such Residual  Certificate at and after either such
            time.  Any such  payments so recovered by the Trustee  shall be paid
            and  delivered  by the  Trustee  to  the  last  preceding  Permitted
            Transferee of such Certificate.

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<PAGE>

      (v)   The  Depositor  shall use its best efforts to make  available,  upon
            receipt  of  written  request  from  the  Trustee,  all  information
            necessary to compute any tax imposed  under  Section  860E(e) of the
            Code  as a  result  of a  Transfer  of an  Ownership  Interest  in a
            Residual   Certificate   to  any  Holder  who  is  not  a  Permitted
            Transferee.

      The restrictions on Transfers of a Residual  Certificate set forth in this
Section 5.2(c) shall cease to apply (and the  applicable  portions of the legend
on a Residual  Certificate  may be deleted) with respect to Transfers  occurring
after delivery to the Trustee of an Opinion of Counsel, which Opinion of Counsel
shall not be an expense of the Trust Fund, the Trustee, the Seller or the Master
Servicer, to the effect that the elimination of such restrictions will not cause
any REMIC  created  hereunder to fail to qualify as a REMIC at any time that the
Certificates are outstanding or result in the imposition of any tax on the Trust
Fund, a  Certificateholder  or another Person.  Each Person holding or acquiring
any  Ownership  Interest  in a  Residual  Certificate  hereby  consents  to  any
amendment of this Agreement which,  based on an Opinion of Counsel  furnished to
the Trustee, is reasonably necessary (a) to ensure that the record ownership of,
or any  beneficial  interest  in, a  Residual  Certificate  is not  transferred,
directly or indirectly,  to a Person that is not a Permitted  Transferee and (b)
to provide for a means to compel the Transfer of a Residual Certificate which is
held by a  Person  that is not a  Permitted  Transferee  to a  Holder  that is a
Permitted Transferee.

(d)   The preparation and delivery of all certificates and opinions  referred to
      above in this  Section 5.2 in  connection  with  transfer  shall be at the
      expense of the parties to such transfers.

(e)   Except as provided below, the Book-Entry  Certificates  shall at all times
      remain  registered in the name of the Depository or its nominee and at all
      times:  (i) registration of the Certificates may not be transferred by the
      Trustee except to another  Depository;  (ii) the Depository shall maintain
      book-entry records with respect to the Certificate Owners and with respect
      to  ownership  and  transfers  of  such  Book-Entry  Certificates;   (iii)
      ownership and transfers of registration of the Book-Entry  Certificates on
      the  books  of the  Depository  shall  be  governed  by  applicable  rules
      established by the  Depository;  (iv) the Depository may collect its usual
      and customary fees, charges and expenses from its Depository Participants;
      (v) the Trustee shall deal with the  Depository,  Depository  Participants
      and indirect  participating  firms as  representatives  of the Certificate
      Owners of the  Book-Entry  Certificates  for  purposes of  exercising  the
      rights of holders under this  Agreement,  and requests and  directions for
      and votes of such  representatives  shall not be deemed to be inconsistent
      if they are made with respect to different  Certificate  Owners;  and (vi)
      the  Trustee  may  rely  and  shall be fully  protected  in  relying  upon
      information  furnished by the  Depository  with respect to its  Depository
      Participants and furnished by the Depository  Participants with respect to
      indirect  participating  firms  and  persons  shown  on the  books of such
      indirect participating firms as direct or indirect Certificate Owners.

                                       77
<PAGE>

      All transfers by Certificate  Owners of Book-Entry  Certificates  shall be
made in accordance with the procedures established by the Depository Participant
or  brokerage  firm  representing   such  Certificate   Owner.  Each  Depository
Participant shall only transfer Book-Entry Certificates of Certificate Owners it
represents or of brokerage  firms for which it acts as agent in accordance  with
the Depository's normal procedures.

      If (x) (i) the Depository or the Depositor  advises the Trustee in writing
that the  Depository  is no longer  willing or able to  properly  discharge  its
responsibilities as Depository,  and (ii) the Trustee or the Depositor is unable
to locate a qualified  successor,  (y) the  Depositor at its option  advises the
Trustee in writing that it elects to terminate the book-entry system through the
Depository  or (z)  after the  occurrence  of an Event of  Default,  Certificate
Owners  representing  at  least  51% of the  Class  Certificate  Balance  of the
Book-Entry  Certificates  together advise the Trustee and the Depository through
the Depository  Participants  in writing that the  continuation  of a book-entry
system  through  the  Depository  is no  longer  in the  best  interests  of the
Certificate Owners, the Trustee shall notify all Certificate Owners, through the
Depository,  of the  occurrence  of any such  event and of the  availability  of
definitive,  fully-registered  Certificates  (the "Definitive  Certificates") to
Certificate  Owners  requesting  the same.  Upon surrender to the Trustee of the
related Class of Certificates by the Depository, accompanied by the instructions
from the  Depository  for  registration,  the Trustee shall issue the Definitive
Certificates.  Neither the Master Servicer,  the Depositor nor the Trustee shall
be  liable  for  any  delay  in  delivery  of  such  instruction  and  each  may
conclusively  rely on, and shall be protected in relying on, such  instructions.
The Master  Servicer  shall  provide the Trustee  with an adequate  inventory of
certificates to facilitate the issuance and transfer of Definitive Certificates.
Upon  the  issuance  of  Definitive   Certificates  all  references   herein  to
obligations imposed upon or to be performed by the Depository shall be deemed to
be imposed  upon and  performed by the Trustee,  to the extent  applicable  with
respect to such  Definitive  Certificates  and the Trustee  shall  recognize the
Holders of the Definitive Certificates as Certificateholders hereunder; provided
that the  Trustee  shall  not by virtue of its  assumption  of such  obligations
become liable to any party for any act or failure to act of the Depository.

      SECTION 5.3 Mutilated, Destroyed, Lost or Stolen Certificates.

      If (a) any mutilated  Certificate is  surrendered  to the Trustee,  or the
Trustee receives evidence to its satisfaction of the destruction,  loss or theft
of any  Certificate  and (b) there is delivered  to the Master  Servicer and the
Trustee  such  security or  indemnity as may be required by them to save each of
them  harmless,  then,  in the  absence  of  notice  to the  Trustee  that  such
Certificate  has been  acquired  by a bona fide  purchaser,  the  Trustee  shall
execute,  countersign  and  deliver,  in  exchange  for or in lieu  of any  such
mutilated,  destroyed,  lost or stolen  Certificate,  a new  Certificate of like
Class, tenor and Percentage Interest. In connection with the issuance of any new
Certificate under this Section 5.3, the Trustee may require the payment of a sum
sufficient to cover any tax or other governmental  charge that may be imposed in
relation thereto and any other expenses  (including the fees and expenses of the
Trustee)  connected  therewith.  Any replacement  Certificate issued pursuant to
this  Section  5.3  shall  constitute  complete  and  indefeasible  evidence  of
ownership, as if originally issued, whether or not the lost, stolen or destroyed
Certificate shall be found at any time.

                                       78
<PAGE>

      SECTION 5.4 Persons Deemed Owners.

      The Master  Servicer,  the Trustee and any agent of the Master Servicer or
the Trustee may treat the Person in whose name any  Certificate is registered as
the owner of such  Certificate  for the purpose of  receiving  distributions  as
provided in this  Agreement and for all other purposes  whatsoever,  and neither
the Master  Servicer,  the Trustee  nor any agent of the Master  Servicer or the
Trustee shall be affected by any notice to the contrary.

      SECTION 5.5 Access to List of Certificateholders' Names and Addresses.

      If three or more Certificateholders or Certificate Owners (a) request such
information in writing from the Trustee, (b) state that such  Certificateholders
or Certificate Owners desire to communicate with other  Certificateholders  with
respect to their rights under this Agreement or under the Certificates,  and (c)
provide a copy of the communication which such Certificateholders or Certificate
Owners propose to transmit, or if the Depositor or Master Servicer shall request
such information in writing from the Trustee, then the Trustee shall, within ten
Business  Days after the receipt of such  request,  provide the  Depositor,  the
Master  Servicer  or  such  Certificateholders  or  Certificate  Owners  at such
recipients' expense the most recent list of the Certificateholders of such Trust
Fund held by the Trustee, if any. The Depositor and every  Certificateholder  or
Certificate  Owner,  by  receiving  and  holding a  Certificate,  agree that the
Trustee shall not be held  accountable  by reason of the  disclosure of any such
information as to the list of the  Certificateholders  hereunder,  regardless of
the source from which such information was derived.

      SECTION 5.6 Maintenance of Office or Agency.

      The  Trustee  will  maintain or cause to be  maintained  at its expense an
office or offices or agency or agencies in New York City where  Certificates may
be surrendered for registration of transfer or exchange.  The Trustee  initially
designates its Corporate  Trust Office for such purposes.  The Trustee will give
prompt written notice to the  Certificateholders  of any change in such location
of any such office or agency.

                                   ARTICLE VI
                      THE DEPOSITOR AND THE MASTER SERVICER

      SECTION  6.1  Respective  Liabilities  of the  Depositor  and  the  Master
Servicer.

      The Depositor and the Master  Servicer  shall each be liable in accordance
herewith only to the extent of the  obligations  specifically  and  respectively
imposed upon and undertaken by them herein.

                                       79
<PAGE>

      SECTION  6.2  Merger  or  Consolidation  of the  Depositor  or the  Master
Servicer.

      The  Depositor  and the Master  Servicer will each keep in full effect its
existence,  rights and franchises as a corporation  under the laws of the United
States or under the laws of one of the states  thereof  and will each obtain and
preserve  its  qualification  to do  business as a foreign  corporation  in each
jurisdiction in which such qualification is or shall be necessary to protect the
validity and enforceability of this Agreement,  or any of the Mortgage Loans and
to perform its respective duties under this Agreement.

      Any Person into which the  Depositor or the Master  Servicer may be merged
or  consolidated,  or any Person  resulting from any merger or  consolidation to
which the  Depositor  or the  Master  Servicer  shall be a party,  or any person
succeeding to the business of the Depositor or the Master Servicer, shall be the
successor  of the  Depositor  or  the  Master  Servicer,  as the  case  may  be,
hereunder,  without the  execution  or filing of any paper or any further act on
the  part  of  any  of the  parties  hereto,  anything  herein  to the  contrary
notwithstanding;  provided,  however,  that the successor or surviving Person to
the Master Servicer shall be qualified to sell mortgage loans to, and to service
mortgage loans on behalf of, FNMA or FHLMC.

      SECTION 6.3 Limitation on Liability of the Depositor,  the Master Servicer
and Others.

      None  of the  Depositor,  the  Master  Servicer  or any of the  directors,
officers,  employees or agents of the Depositor or the Master  Servicer shall be
under  any  liability  to the  Certificateholders  for any  action  taken or for
refraining  from  the  taking  of any  action  in good  faith  pursuant  to this
Agreement,  or for errors in judgment;  provided,  however,  that this provision
shall not protect the Depositor,  the Master Servicer or any such Person against
any breach of  representations  or  warranties  made by it herein or protect the
Depositor, the Master Servicer or any such Person from any liability which would
otherwise  be imposed by  reasons  of  willful  misfeasance,  bad faith or gross
negligence in the  performance  of duties or by reason of reckless  disregard of
obligations  and duties  hereunder.  The Depositor,  the Master Servicer and any
director, officer, employee or agent of the Depositor or the Master Servicer may
rely in good faith on any document of any kind prima facie properly executed and
submitted by any Person respecting any matters arising hereunder. The Depositor,
the  Master  Servicer  and any  director,  officer,  employee  or  agent  of the
Depositor or the Master Servicer shall be indemnified by the Trust Fund and held
harmless against any loss,  liability or expense incurred in connection with any
audit,  controversy or judicial  proceeding  relating to a  governmental  taxing
authority or any legal action  relating to this  Agreement or the  Certificates,
other than any loss,  liability or expense related to any specific Mortgage Loan
or  Mortgage  Loans  (except as any such  loss,  liability  or expense  shall be
otherwise  reimbursable  pursuant to this Agreement) and any loss,  liability or
expense incurred by reason of willful misfeasance, bad faith or gross negligence
in the  performance  of duties  hereunder or by reason of reckless  disregard of
obligations and duties hereunder.  Neither the Depositor nor the Master Servicer
shall be under any obligation to appear in, prosecute or defend any legal action
that is not  incidental  to its  respective  duties  hereunder  and which in its
opinion may  involve it in any expense or  liability;  provided,  however,  that
either the Depositor, or the Master Servicer may in its discretion undertake any
such action that it may deem necessary or desirable in respect of this Agreement
and the rights and duties of the parties hereto and interests of the Trustee and
the Certificateholders hereunder. In such event, the legal expenses and costs of
such action and any liability resulting  therefrom shall be expenses,  costs and
liabilities of the Trust Fund, and the Depositor,  and the Master Servicer shall
be entitled to be reimbursed  therefor out of the  applicable  subaccount of the
Certificate Account.

                                       80
<PAGE>

      SECTION 6.4 Limitation on Resignation of Master Servicer.

      The Master  Servicer  shall not  resign  from the  obligations  and duties
hereby  imposed on it except (a) upon  appointment  of a successor  servicer and
receipt  by the  Trustee  of a  letter  from  each  Rating  Agency  that  such a
resignation  and  appointment  will not result in a downgrading of the rating of
any of the Certificates, or (b) upon determination that its duties hereunder are
no longer permissible under applicable law. Any such determination  under clause
(b) permitting the  resignation of the Master  Servicer shall be evidenced by an
Opinion of Counsel to such effect delivered to the Trustee.  No such resignation
shall become  effective  until the Trustee or other  successor  master  servicer
shall have assumed the Master Servicer's  responsibilities,  duties, liabilities
and obligations hereunder.

                                   ARTICLE VII
                                     DEFAULT

      SECTION 7.1 Events of Default.

      "Event of Default,"  wherever used herein,  means any one of the following
events:

      (i)   any  failure by the  Master  Servicer  to deposit in the  applicable
            subaccount  of the  Certificate  Account or remit to the Trustee any
            payment required to be made under the terms of this Agreement, which
            failure shall continue  unremedied for five days after the date upon
            which  written  notice of such failure  shall have been given to the
            Master  Servicer  by the Trustee or the  Depositor  or to the Master
            Servicer and the Trustee by the Holders of  Certificates  having not
            less than 25% of the Voting Rights evidenced by the Certificates; or

      (ii)  any  failure  by the  Master  Servicer  to observe or perform in any
            material  respect any other of the  covenants or  agreements  on the
            part of the  Master  Servicer  contained  in this  Agreement,  which
            failure materially affects the rights of  Certificateholders,  which
            failure continues  unremedied for a period of 60 days after the date
            on which written notice of such failure shall have been given to the
            Master  Servicer by the Trustee or the  Depositor,  or to the Master
            Servicer and the Trustee by the Holders of  Certificates  evidencing
            not  less  than  25%  of  the  Voting   Rights   evidenced   by  the
            Certificates;  provided,  however, that the 60-day cure period shall
            not apply to the  initial  delivery of the  Mortgage  File for Delay
            Delivery  Mortgage Loans nor the failure to substitute or repurchase
            in lieu thereof; or

      (iii) a decree  or order of a court or  agency  or  supervisory  authority
            having  jurisdiction  in  the  premises  for  the  appointment  of a
            receiver or  liquidator  in any  insolvency,  readjustment  of debt,
            marshalling of assets and liabilities or similar proceedings, or for
            the  winding-up  or  liquidation  of its  affairs,  shall  have been
            entered  against the Master  Servicer and such decree or order shall
            have remained in force  undischarged  or unstayed for a period of 60
            consecutive  days; or

      (iv)  the Master  Servicer shall consent to the  appointment of a receiver
            or liquidator in any insolvency,  readjustment of debt,  marshalling
            of assets and  liabilities or similar  proceedings of or relating to
            the Master Servicer or all or  substantially  all of the property of
            the Master Servicer; or

                                       81
<PAGE>

      (v)   the Master  Servicer shall admit in writing its inability to pay its
            debts  generally  as  they  become  due,  file a  petition  to  take
            advantage  of, or commence a voluntary  case under,  any  applicable
            insolvency or  reorganization  statute,  make an assignment  for the
            benefit of its  creditors,  or  voluntarily  suspend  payment of its
            obligations; or

      (vi)  the failure of the Master Servicer to remit any Advance  required to
            be  remitted  by the Master  Servicer  pursuant to Section 4.1 which
            failure  continues  unremedied  at 11:00 a.m.,  Central time, on the
            related Distribution Date.

      If an Event of Default  described  in clauses  (i) to (v) of this  Section
shall  occur,  then,  and in each and every such case,  so long as such Event of
Default  shall not have been  remedied,  the Trustee may, or at the direction of
the  Holders  of  Certificates  evidencing  not less than 66 2/3% of the  Voting
Rights evidenced by the Certificates,  the Trustee shall by notice in writing to
the Master  Servicer (with a copy to each Rating  Agency),  terminate all of the
rights and obligations of the Master Servicer under this Agreement and in and to
the  Mortgage  Loans  and the  proceeds  thereof,  other  than its  rights  as a
Certificateholder  hereunder. If an Event of Default described in clause (vi) of
this Section shall occur, the Trustee shall immediately, by notice in writing to
the Master  Servicer (with a copy to each Rating  Agency),  terminate all of the
rights and obligations of the Master Servicer under this Agreement and in and to
the  Mortgage  Loans  and  proceeds   thereof,   other  than  its  rights  as  a
Certificateholder  hereunder. On and after the receipt by the Master Servicer of
such written notice,  all authority and power of the Master Servicer  hereunder,
whether with respect to the Mortgage  Loans or  otherwise,  shall pass to and be
vested in the Trustee or another  successor to the Master Servicer  appointed by
the Trustee  pursuant to Section 7.2. The Trustee,  in its capacity as successor
to the  Master  Servicer,  shall  thereupon  make any  Advance  which the Master
Servicer  failed to make  subject to Section 4.1  hereof.  The Trustee is hereby
authorized  and  empowered  to  execute  and  deliver,  on behalf of the  Master
Servicer,  as  attorney-in-fact  or  otherwise,  any and all documents and other
instruments,  and to do or  accomplish  all other  acts or things  necessary  or
appropriate  to effect the  purposes of such notice of  termination,  whether to
complete the transfer and  endorsement  or assignment of the Mortgage  Loans and
related  documents,  or  otherwise.  Unless  expressly  provided in such written
notice,  no such termination  shall affect any obligation of the Master Servicer
to pay amounts owed  pursuant to Article  VIII.  The Master  Servicer  agrees to
cooperate with the Trustee in effecting the termination of the Master Servicer's
responsibilities  and  rights  hereunder,  including,  without  limitation,  the
transfer to the Trustee of all cash amounts  which shall at the time be credited
to the  Certificate  Account,  or  thereafter  be received  with  respect to the
Mortgage  Loans.  All expenses  incurred in the  transferring  of the  servicing
duties from the Master  Servicer to a  Successor  Servicer  shall be paid by the
Master  Servicer,  and if not paid by the  Master  Servicer,  shall be paid from
amounts on deposit in the Certificate Account.

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      Notwithstanding  any  termination of the activities of the Master Servicer
hereunder,  the Master  Servicer  shall be entitled to receive,  out of any late
collection of a Scheduled  Payment on a Mortgage Loan which was due prior to the
notice  terminating  such Master  Servicer's  rights and  obligations  as Master
Servicer hereunder and received after such notice, that portion thereof to which
such Master  Servicer  would have been entitled  pursuant to Sections  3.8(a)(i)
through  (viii),and any other amounts payable to such Master Servicer  hereunder
the  entitlement  to which  arose  prior to the  termination  of its  activities
hereunder.  Any termination of the activities of the Master  Servicer  hereunder
will simultaneously result in the termination of the Master Servicer's duties as
a  subservicer  pursuant  to the  Servicing  Rights  Transfer  and  Subservicing
Agreement.

      SECTION 7.2 Trustee to Act; Appointment of Successor.

      On and after the time the Master Servicer receives a notice of termination
pursuant to Section 7.1 hereof, the Trustee shall,  subject to and to the extent
provided in Section  3.4, be the  successor  to the Master  Servicer  under this
Agreement  and the  transactions  set forth or provided  for herein and shall be
subject to all the  responsibilities,  duties and liabilities  relating  thereto
placed on the Master Servicer by the terms and provisions  hereof and applicable
law  including  the  obligation  to make  Advances  pursuant to Section  4.1. As
compensation  therefor,  the Trustee shall be entitled to all funds  relating to
the Mortgage  Loans that the Master  Servicer would have been entitled to charge
to the Certificate  Account or  Distribution  Account if the Master Servicer had
continued to act hereunder.  Notwithstanding  the foregoing,  if the Trustee has
become the  successor  to the Master  Servicer in  accordance  with  Section 7.1
hereof,  the Trustee may, if it shall be unwilling to so act, or shall, if it is
prohibited by applicable law from making Advances pursuant to Section 4.1 hereof
or if it is  otherwise  unable  to so act,  appoint,  or  petition  a  court  of
competent  jurisdiction  to appoint,  any  established  mortgage loan  servicing
institution the appointment of which does not adversely  affect the then current
rating of the  Certificates by each Rating Agency as the successor to the Master
Servicer hereunder in the assumption of all or any part of the responsibilities,
duties or liabilities  of the Master  Servicer  hereunder.  Any successor to the
Master  Servicer  shall be an  institution  which is a FNMA and  FHLMC  approved
seller/servicer in good standing, which has a net worth of at least $10,000,000,
and which is willing to service the Mortgage  Loans and executes and delivers to
the  Depositor  and the  Trustee an  agreement  accepting  such  delegation  and
assignment,  which contains an assumption by such Person of the rights,  powers,
duties,  responsibilities,  obligations  and  liabilities of the Master Servicer
(other than liabilities of the Master Servicer under Section 6.3 hereof incurred
prior to termination of the Master Servicer under Section 7.1), with like effect
as if originally  named as a party to this Agreement;  and provided further that
each Rating Agency  acknowledges  that its rating of the  Certificates in effect
immediately  prior to such  assignment and  delegation  will not be qualified or
reduced, as a result of such assignment and delegation. Pending appointment of a
successor to the Master Servicer hereunder,  the Trustee,  unless the Trustee is
prohibited by law from so acting,  shall,  subject to Section 3.4 hereof, act in
such  capacity  as provided  above.  In  connection  with such  appointment  and
assumption,  the Trustee may make such arrangements for the compensation of such
successor  out of  payments  on Mortgage  Loans as it and such  successor  shall
agree;  provided,  however,  that no such compensation shall be in excess of the
Master  Servicing Fee permitted the Master Servicer  hereunder.  The Trustee and
such successor shall take such action,  consistent with this Agreement, as shall
be  necessary to  effectuate  any such  succession.  Neither the Trustee nor any

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other successor  master  servicer shall be deemed to be in default  hereunder by
reason  of any  failure  to make,  or any  delay  in  making,  any  distribution
hereunder  or any portion  thereof or any  failure to  perform,  or any delay in
performing,  any duties or responsibilities  hereunder, in either case caused by
the  failure of the Master  Servicer  to  deliver  or  provide,  or any delay in
delivering or providing, any cash, information, documents or records to it.

      Any successor to the Master  Servicer as master servicer shall give notice
to the  Mortgagors of such change of servicer and shall,  during the term of its
service as master  servicer  maintain in force the policy or  policies  that the
Master Servicer is required to maintain pursuant to Section 3.18.

      In connection  with the  termination or resignation of the Master Servicer
hereunder,  either (i) the successor Master  Servicer,  including the Trustee if
the Trustee is acting as successor Master Servicer,  shall represent and warrant
that it is a member of MERS in good  standing  and shall  agree to comply in all
material  respects with the rules and procedures of MERS in connection  with the
servicing  of the  Mortgage  Loans that are  registered  with MERS,  or (ii) the
predecessor  Master Servicer shall cooperate with the successor  Master Servicer
either (x) in causing MERS to execute and deliver an  assignment  of Mortgage in
recordable form to transfer the Mortgage from MERS to the Trustee and to execute
and  deliver  such other  notices,  documents  and other  instruments  as may be
necessary or desirable to effect a transfer of such  Mortgage  Loan or servicing
of such mortgage Loan on the MERS(R) System to the successor  Master Servicer or
(y) in causing  MERS to  designate on the MERS(R)  System the  successor  Master
Servicer as the servicer of such Mortgage Loan. The predecessor  Master Servicer
shall file or cause to be filed any such assignment in the appropriate recording
office.  The  successor  Master  Servicer  shall  cause  such  assignment  to be
delivered to the Trustee  promptly upon receipt of the original with evidence of
recording  thereon or a copy certified by the public  recording  office in which
such assignment was recorded.

      SECTION 7.3 Notification to Certificateholders.

      (a)   Upon any  termination of or appointment of a successor to the Master
            Servicer,  the Trustee shall give prompt  written  notice thereof to
            Certificateholders and to each Rating Agency.

      (b)   Within 60 days after the  occurrence  of any Event of  Default,  the
            Trustee shall transmit by mail to all  Certificateholders  notice of
            each such Event of Default  hereunder  known to the Trustee,  unless
            such Event of Default shall have been cured or waived.

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                                  ARTICLE VIII
                             CONCERNING THE TRUSTEE

      SECTION 8.1 Duties of Trustee.

      The  Trustee,  prior to the  occurrence  of an Event of Default of which a
Responsible  Officer of the Trustee has actual knowledge and after the curing of
all Events of Default that may have  occurred,  shall  undertake to perform such
duties and only such duties as are specifically set forth in this Agreement.  In
case an Event of  Default of which a  Responsible  Officer  of the  Trustee  has
actual  knowledge has occurred and remains  uncured,  the Trustee shall exercise
such of the rights and powers vested in it by this  Agreement,  and use the same
degree of care and skill in their exercise as a prudent person would exercise or
use under the circumstances in the conduct of such person's own affairs.

      The Trustee,  upon receipt of all resolutions,  certificates,  statements,
opinions,  reports,  documents,  orders or other  instruments  furnished  to the
Trustee that are specifically required to be furnished pursuant to any provision
of this Agreement  shall examine them to determine  whether they are in the form
required by this  Agreement;  provided,  however,  that the Trustee shall not be
responsible  for the  accuracy or content of any such  resolution,  certificate,
statement,  opinion, report,  document,  order or other instrument.  If any such
instrument is found not to conform in any material  respect to the  requirements
of this  Agreement,  the Trustee  shall  notify the  Certificateholders  of such
instrument in the event that the Trustee, after so requesting,  does not receive
a satisfactorily corrected instrument.

      The Trustee is hereby  directed  to execute and deliver to The  Depository
Trust Company the Issuer Letter of Representations  dated as of the Closing Date
on behalf of the trust created hereunder.  The Depositor and the Master Servicer
acknowledge  and agree that the Trustee is executing and  delivering  the Issuer
Letter of  Representations on behalf of the trust created hereunder and shall do
so solely in its capacity as Trustee and not in its individual capacity

      No provision of this  Agreement  shall be construed to relieve the Trustee
from liability for its own negligent action, its own negligent failure to act or
its own willful misconduct; provided, however, that:

      (i)   unless an Event of  Default  of which a  Responsible  Officer of the
            Trustee has actual  knowledge shall have occurred and be continuing,
            the duties and obligations of the Trustee shall be determined solely
            by the express  provisions of this Agreement,  the Trustee shall not
            be liable except for the  performance of such duties and obligations
            as  are  specifically  set  forth  in  this  Agreement,  no  implied
            covenants or obligations  shall be read into this Agreement  against
            the Trustee and the Trustee may  conclusively  rely, as to the truth
            of the  statements  and the  correctness  of the opinions  expressed
            therein,  upon any certificates or opinions furnished to the Trustee
            and  conforming  to the  requirements  of this  Agreement  which  it
            believed in good faith to be genuine and to have been duly  executed
            by the proper authorities respecting any matters arising hereunder;

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<PAGE>

      (ii)  the  Trustee  shall not be liable for an error of  judgment  made in
            good faith by a Responsible  Officer or Responsible  Officers of the
            Trustee,  unless it shall be finally  proven  that the  Trustee  was
            negligent in ascertaining the pertinent facts;

      (iii) the Trustee  shall not be liable with  respect to any action  taken,
            suffered  or omitted  to be taken by it in good faith in  accordance
            with the direction of Holders of  Certificates  evidencing  not less
            than 25% of the Voting Rights of Certificates  relating to the time,
            method  and  place  of  conducting  any  proceeding  for any  remedy
            available to the Trustee, or exercising any trust or power conferred
            upon the Trustee under this Agreement;

      (iv)  the Trustee shall not be required to expend or risk its own funds or
            otherwise incur financial liability in the performance of any of its
            duties  hereunder  or the exercise of any of its rights or powers if
            there is reasonable  ground for believing that the repayment of such
            funds or adequate  indemnity  against  such risk or liability is not
            assured  to  it,  and  none  of the  provisions  contained  in  this
            Agreement  shall in any event require the Trustee to perform,  or be
            responsible for the manner of performance of, any of the obligations
            of the Master Servicer under this Agreement except during such time,
            if any, as the Trustee shall be the successor to, and be vested with
            the rights,  duties,  powers and privileges of, the Master Servicer;
            and

      (v)   without  limiting  the  generality  of this Section 8.1, the Trustee
            shall  have  no  duty  (A)  to  see to  any  recording,  filing,  or
            depositing of this Agreement or any agreement  referred to herein or
            any  financing  statement  or  continuation  statement  evidencing a
            security  interest,  or to  see  to  the  maintenance  of  any  such
            recording  or filing or deposit or to any  rerecording,  refiling or
            redepositing of any thereof, (B) to see to any insurance, (C) to see
            to the  payment  or  discharge  of any  tax,  assessment,  or  other
            governmental  charge or any lien or  encumbrance  of any kind  owing
            with respect to, assessed or levied  against,  any part of the Trust
            Fund other than from funds available in the Distribution Account (D)
            to confirm or verify the contents of any reports or  certificates of
            the  Servicer  delivered to the Trustee  pursuant to this  Agreement
            believed  by the  Trustee to be genuine  and to have been  signed or
            presented by the proper party or parties.

      SECTION 8.2 Certain Matters Affecting the Trustee.

      Except as otherwise provided in Section 8.1:

      (i)   the  Trustee may  request  and rely upon and shall be  protected  in
            acting or  refraining  from  acting upon any  resolution,  Officers'
            Certificate,  certificate  of  auditors  or any  other  certificate,
            statement,  instrument,  opinion, report, notice, request,  consent,
            order, appraisal,  bond or other paper or document believed by it to
            be genuine and to have been signed or  presented by the proper party
            or parties and the Trustee shall have no responsibility to ascertain
            or confirm the  genuineness  of any  signature  of any such party or
            parties;

      (ii)  the  Trustee  may  consult  with  counsel,   financial  advisers  or
            accountants and the advice of any such counsel,  financial  advisers
            or accountants and any Opinion of Counsel shall be full and complete
            authorization  and  protection  in respect  of any  action  taken or
            suffered or omitted by it hereunder in good faith and in  accordance
            with such Opinion of Counsel;

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<PAGE>

      (iii) the Trustee  shall not be liable for any action  taken,  suffered or
            omitted by it in good faith and believed by it to be  authorized  or
            within the discretion or rights or powers  conferred upon it by this
            Agreement;

      (iv)  the Trustee  shall not be bound to make any  investigation  into the
            facts or matters stated in any resolution,  certificate,  statement,
            instrument,   opinion,  report,  notice,  request,  consent,  order,
            approval,  bond or other  paper or  document,  unless  requested  in
            writing so to do by Holders of Certificates evidencing not less than
            25% of the Voting  Rights  allocated to each Class of  Certificates;
            provided,  however,  that if the payment within a reasonable time to
            the  Trustee  of the costs,  expenses  or  liabilities  likely to be
            incurred  by it in the  making  of  such  investigation  is,  in the
            opinion of the  Trustee,  not assured to the Trustee by the security
            afforded  to it by the  terms of this  Agreement,  the  Trustee  may
            require  indemnity  satisfactory  to the Trustee  against such cost,
            expense or liability  as a condition to taking any such action.  The
            reasonable  expense of every such  examination  shall be paid by the
            Master  Servicer or, if paid by the Trustee,  shall be repaid by the
            Master Servicer upon demand from the Servicer's own funds.

      (v)   the Trustee may  execute  any of the trusts or powers  hereunder  or
            perform  any  duties  hereunder  either  directly  or by or  through
            agents,  accountants  or  attorneys  and the  Trustee  shall  not be
            responsible  for any  misconduct  or  negligence on the part of such
            agent,  accountant  or attorney  appointed  by the Trustee  with due
            care;

      (vi)  the Trustee shall not be required to risk or expend its own funds or
            otherwise incur any financial liability in the performance of any of
            its  duties  or in the  exercise  of any of  its  rights  or  powers
            hereunder if it shall have  reasonable  grounds for  believing  that
            repayment of such funds or adequate  indemnity  against such risk or
            liability is not assured to it;

      (vii) the Trustee  shall not be liable for any loss on any  investment  of
            funds  pursuant  to this  Agreement  (other  than as  issuer  of the
            investment security);

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<PAGE>

     (viii) the Trustee  shall not be deemed to have  knowledge  of an Event  of
            Default  until a  Responsible  Officer  of the  Trustee  shall  have
            received  written  notice thereof and in the absence of such notice,
            the  Trustee  may  conclusively  assume  that  there  is no Event of
            Default;

      (ix)  the Trustee  shall be under no  obligation  to  exercise  any of the
            trusts,  rights  or  powers  vested  in it by this  Agreement  or to
            institute, conduct or defend any litigation hereunder or in relation
            hereto  at  the   request,   order  or   direction  of  any  of  the
            Certificateholders,  pursuant to the  provisions of this  Agreement,
            unless  such  Certificateholders  shall have  offered to the Trustee
            reasonable security or indemnity satisfactory to the Trustee against
            the costs, expenses and liabilities which may be incurred therein or
            thereby;

      (x)   the right of the Trustee to perform any discretionary act enumerated
            in this Agreement  shall not be construed as a duty, and the Trustee
            shall not be  answerable  for other than its  negligence  or willful
            misconduct in the performance of such act; and

      (xi)  the  Trustee  shall  not be  required  to give any bond or surety in
            respect of the  execution  of the Trust Fund  created  hereby or the
            powers granted hereunder.

      SECTION 8.3 Trustee Not Liable for Certificates or Mortgage Loans.

      The recitals  contained herein and in the  Certificates  shall be taken as
the statements of the Depositor and the Trustee  assumes no  responsibility  for
their  correctness.  The Trustee makes no  representations as to the validity or
sufficiency of this Agreement or of the  Certificates or of any Mortgage Loan or
related document or of MERS or the MERS(R) System other than with respect to the
Trustee's execution and counter-signature of the Certificates. The Trustee shall
not be  accountable  for the use or  application  by the Depositor or the Master
Servicer of any funds paid to the Depositor or the Master Servicer in respect of
the Mortgage Loans or deposited in or withdrawn from the Certificate  Account by
the Depositor or the Master Servicer.

      SECTION 8.4 Trustee May Own Certificates.

      The Trustee in its  individual or any other  capacity may become the owner
or pledgee of Certificates  with the same rights as it would have if it were not
the Trustee.

      SECTION 8.5 Trustee's Fees and Expenses.

      The  Trustee,  as  compensation  for its  activities  prior to making  the
distributions  pursuant to Section 4.2 hereunder,  shall be entitled to withdraw
from the Distribution  Account on each  Distribution Date an amount equal to the
Trustee Fee for such Distribution  Date. The Trustee and any director,  officer,
employee or agent of the Trustee shall be indemnified by the Master Servicer and
held  harmless  against any loss,  liability  or expense  (including  reasonable
attorney's  fees) (i)  incurred  in  connection  with any claim or legal  action
relating to (a) this Agreement,  (b) the  Certificates or (c) in connection with
the performance of any of the Trustee's duties  hereunder,  other than any loss,
liability  or expense  incurred by reason of willful  misfeasance,  bad faith or
negligence  in the  performance  of any of the  Trustee's  duties  hereunder  or
incurred by reason of any action of the Trustee  taken at the  direction  of the
Certificateholders  and (ii)  resulting from any error in any tax or information
return  prepared  by the Master  Servicer.  Such  indemnity  shall  survive  the
termination  of this  Agreement  or the  resignation  or removal of the  Trustee
hereunder.  Without  limiting the foregoing,  the Master Servicer  covenants and

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agrees,  except as  otherwise  agreed upon in writing by the  Depositor  and the
Trustee,  and except for any such expense,  disbursement or advance as may arise
from the  Trustee's  negligence,  bad  faith or  willful  misconduct,  to pay or
reimburse the Trustee, for all reasonable  expenses,  disbursements and advances
incurred or made by the Trustee in accordance with any of the provisions of this
Agreement with respect to: (A) the reasonable  compensation and the expenses and
disbursements  of its counsel not associated with the closing of the issuance of
the Certificates, (B) the reasonable compensation, expenses and disbursements of
any  accountant,  engineer or appraiser  that is not  regularly  employed by the
Trustee, to the extent that the Trustee must engage such persons to perform acts
or services hereunder and (C) printing and engraving expenses in connection with
preparing any Definitive Certificates.  Except as otherwise provided herein, the
Trustee  shall not be  entitled  to payment  or  reimbursement  for any  routine
ongoing expenses incurred by the Trustee in the ordinary course of its duties as
Trustee,  Registrar,  Tax Matters  Person or Paying  Agent  hereunder or for any
other expenses.

      SECTION 8.6 Eligibility Requirements for Trustee.

      The Trustee  hereunder  shall at all times be a corporation or association
organized and doing  business  under the laws of a state or the United States of
America, authorized under such laws to exercise corporate trust powers, having a
combined capital and surplus of at least $50,000,000,  subject to supervision or
examination  by federal or state  authority and with a credit rating which would
not cause either of the Rating Agencies to reduce their  respective then current
ratings of the  Certificates (or having provided such security from time to time
as is sufficient to avoid such  reduction).  If such  corporation or association
publishes  reports of  condition  at least  annually,  pursuant to law or to the
requirements of the aforesaid  supervising or examining authority,  then for the
purposes  of  this  Section  8.6  the  combined  capital  and  surplus  of  such
corporation  or  association  shall be deemed  to be its  combined  capital  and
surplus as set forth in its most recent  report of  condition so  published.  In
case at any time the Trustee shall cease to be eligible in  accordance  with the
provisions  of this  Section 8.6, the Trustee  shall resign  immediately  in the
manner and with the effect  specified in Section 8.7 hereof.  The entity serving
as Trustee may have normal  banking and trust  relationships  with the Depositor
and its affiliates or the Master Servicer and its affiliates; provided, however,
that such entity  cannot be an affiliate of the Master  Servicer  other than the
Trustee in its role as successor to the Master Servicer.

      SECTION 8.7 Resignation and Removal of Trustee.

      The  Trustee  may at any time  resign  and be  discharged  from the trusts
hereby  created by giving written notice of resignation to the Depositor and the
Master  Servicer  and each  Rating  Agency not less than 60 days before the date
specified in such notice when,  subject to Section 8.8, such  resignation  is to
take effect,  and acceptance by a successor  trustee in accordance  with Section
8.8 meeting the qualifications set forth in Section 8.6. If no successor trustee
meeting  such  qualifications  shall have been so  appointed  and have  accepted
appointment  within 30 days after the giving of such notice or resignation,  the
resigning  Trustee may  petition  any court of  competent  jurisdiction  for the
appointment of a successor trustee.

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      If at any time the Trustee shall cease to be eligible in  accordance  with
the  provisions  of Section  8.6 hereof and shall fail to resign  after  written
request  thereto by the  Depositor,  or if at any time the Trustee  shall become
incapable  of acting,  or shall be  adjudged  as  bankrupt  or  insolvent,  or a
receiver of the Trustee or of its  property  shall be  appointed,  or any public
officer  shall  take  charge or control of the  Trustee  or of its  property  or
affairs for the purpose of rehabilitation, conservation or liquidation, or a tax
is imposed  with  respect to the Trust Fund by any state in which the Trustee or
the Trust Fund is located and the imposition of such tax would be avoided by the
appointment of a different  trustee,  then the Depositor or the Master  Servicer
may remove the Trustee and appoint a successor trustee by written instrument, in
triplicate,  one copy of which instrument shall be delivered to the Trustee, one
copy of which  shall be  delivered  to the Master  Servicer  and one copy to the
successor trustee.

      The Holders of Certificates  entitled to at least 51% of the Voting Rights
may at any time remove the  Trustee  and appoint a successor  trustee by written
instrument  or  instruments,  in  triplicate,  signed by such  Holders  or their
attorneys-in-fact  duly authorized,  one complete set of which instruments shall
be delivered by the successor  Trustee to the Master Servicer,  one complete set
to the Trustee so removed and one  complete set to the  successor so  appointed.
Notice of any removal of the Trustee shall be given to each Rating Agency by the
Successor Trustee.

      Any  resignation or removal of the Trustee and  appointment of a successor
trustee  pursuant to any of the  provisions  of this  Section  8.7 shall  become
effective upon acceptance of appointment by the successor trustee as provided in
Section 8.8 hereof.

      SECTION 8.8 Successor Trustee.

      Any  successor  trustee  appointed as provided in Section 8.7 hereof shall
execute, acknowledge and deliver to the Depositor and to its predecessor trustee
and the Master Servicer an instrument  accepting such appointment  hereunder and
thereupon the  resignation  or removal of the  predecessor  trustee shall become
effective  and  such  successor  trustee,  without  any  further  act,  deed  or
conveyance,  shall become fully vested with all the rights,  powers,  duties and
obligations of its predecessor hereunder,  with the like effect as if originally
named as trustee herein. The Depositor,  the Master Servicer and the predecessor
trustee shall execute and deliver such  instruments  and do such other things as
may  reasonably be required for more fully and certainly  vesting and confirming
in the successor trustee all such rights, powers, duties, and obligations.

      No successor trustee shall accept  appointment as provided in this Section
8.8  unless  at the time of such  acceptance  such  successor  trustee  shall be
eligible  under the provisions of Section 8.6 hereof and its  appointment  shall
not adversely affect the then current rating of the Certificates.

      Upon acceptance of appointment by a successor  trustee as provided in this
Section 8.8, the Depositor  shall mail notice of the  succession of such trustee
hereunder to all Holders of  Certificates.  If the Depositor  fails to mail such
notice within 10 days after acceptance of appointment by the successor  trustee,
the successor trustee shall cause such notice to be mailed at the expense of the
Depositor.

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      SECTION 8.9 Merger or Consolidation of Trustee.

      Any corporation  into which the Trustee may be merged or converted or with
which it may be  consolidated  or any  corporation  resulting  from any  merger,
conversion  or  consolidation  to which  the  Trustee  shall be a party,  or any
corporation succeeding to the business of the Trustee, shall be the successor of
the Trustee  hereunder,  provided that such corporation  shall be eligible under
the  provisions  of Section 8.6 hereof  without the  execution  or filing of any
paper or further act on the part of any of the parties  hereto,  anything herein
to the contrary notwithstanding.

      SECTION 8.10 Appointment of Co-Trustee or Separate Trustee.

      Notwithstanding  any other provisions of this Agreement,  at any time, for
the purpose of meeting any legal  requirements of any  jurisdiction in which any
part of the Trust Fund or property securing any Mortgage Note may at the time be
located, the Master Servicer and the Trustee acting jointly shall have the power
and shall  execute and deliver all  instruments  to appoint one or more  Persons
approved by the Trustee to act as  co-trustee  or  co-trustees  jointly with the
Trustee,  or separate  trustee or separate  trustees,  of all or any part of the
Trust Fund, and to vest in such Person or Persons,  in such capacity and for the
benefit  of the  Certificateholders,  such  title to the Trust  Fund or any part
thereof,  whichever is applicable,  and, subject to the other provisions of this
Section 8.10, such powers, duties, obligations,  rights and trusts as the Master
Servicer and the Trustee may  consider  necessary  or  desirable.  If the Master
Servicer  shall not have  joined in such  appointment  within 15 days  after the
receipt by it of a request  to do so, or in the case an Event of  Default  shall
have occurred and be continuing,  the Trustee alone shall have the power to make
such appointment.  No co-trustee or separate trustee hereunder shall be required
to meet the terms of eligibility as a successor trustee under Section 8.6 and no
notice to  Certificateholders  of the  appointment of any co-trustee or separate
trustee shall be required under Section 8.8.

      Every separate  trustee and co-trustee  shall, to the extent  permitted by
law, be appointed and act subject to the following provisions and conditions:

      (i)   To the extent  necessary to effectuate  the purposes of this Section
            8.10,  all  rights,  powers,  duties and  obligations  conferred  or
            imposed  upon the Trustee  shall be  conferred  or imposed  upon and
            exercised or performed by the Trustee and such  separate  trustee or
            co-trustee  jointly (it being  understood that such separate trustee
            or  co-trustee  is not  authorized  to act  separately  without  the
            Trustee  joining in such act),  except to the extent  that under any
            law of any  jurisdiction  in which any particular act or acts are to
            be  performed  (whether as Trustee  hereunder or as successor to the
            Master  Servicer  hereunder),  the Trustee shall be  incompetent  or
            unqualified to perform such act or acts, in which event such rights,
            powers,  duties and  obligations  (including the holding of title to
            the  applicable  Trust  Fund  or any  portion  thereof  in any  such
            jurisdiction)  shall  be  exercised  and  performed  singly  by such
            separate  trustee or co-trustee,  but solely at the direction of the
            Trustee;

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      (ii)  No trustee  hereunder shall be held  personally  liable by reason of
            any  act or  omission  of  any  other  trustee  hereunder  and  such
            appointment  shall not, and shall not be deemed to,  constitute  any
            such separate trustee or co-trustee as agent of the Trustee;

      (iii) The Trustee may at any time accept the  resignation of or remove any
            separate trustee or co-trustee; and

      (iv)  The Master  Servicer,  and not the Trustee,  shall be liable for the
            payment    of    reasonable    compensation,    reimbursement    and
            indemnification to any such separate trustee or co-trustee.

      Any notice,  request or other writing given to the Trustee shall be deemed
to have been given to each of the separate trustees and co-trustees, when and as
effectively  as if  given  to each of  them.  Every  instrument  appointing  any
separate  trustee or co-trustee shall refer to this Agreement and the conditions
of this Article VIII. Each separate trustee and co-trustee,  upon its acceptance
of the trusts conferred,  shall be vested with the estates or property specified
in its instrument of appointment, either jointly with the Trustee or separately,
as may be provided  therein,  subject to all the  provisions of this  Agreement,
specifically including every provision of this Agreement relating to the conduct
of, affecting the liability of, or affording  protection to, the Trustee.  Every
such instrument  shall be filed with the Trustee and a copy thereof given to the
Master Servicer and the Depositor.

      Any  separate  trustee or  co-trustee  may,  at any time,  constitute  the
Trustee its agent or  attorney-in-fact,  with full power and  authority,  to the
extent not  prohibited  by law, to do any lawful act under or in respect of this
Agreement on its behalf and in its name.  If any separate  trustee or co-trustee
shall die, become incapable of acting, resign or be removed, all of its estates,
properties,  rights,  remedies  and trusts shall vest in and be exercised by the
Trustee,  to the extent  permitted by law,  without the  appointment of a new or
successor trustee.

      SECTION 8.11 Tax Matters.

      It is intended  that the assets with respect to which each REMIC  election
is to be made, as set forth in the preliminary  statement shall constitute,  and
that the conduct of matters  relating to such assets shall be such as to qualify
such assets as, a "real estate mortgage investment conduit" as defined in and in
accordance  with the REMIC  Provisions.  In furtherance of such  intention,  the
Trustee  covenants  and agrees  that it shall act as agent  (and the  Trustee is
hereby  appointed  to act as agent) on behalf of any such REMIC and that in such
capacity it shall: (a) prepare and file, or cause to be prepared and filed, in a
timely manner, a U.S. Real Estate Mortgage  Investment Conduit Income Tax Return
(Form 1066 or any successor  form adopted by the Internal  Revenue  Service) and
prepare and file or cause to be  prepared  and filed with the  Internal  Revenue
Service and applicable state or local tax authorities  income tax or information
returns for each taxable year with  respect to any such REMIC,  containing  such
information and at the times and in the manner as may be required by the Code or
state or local  tax laws,  regulations,  or rules,  and  furnish  or cause to be
furnished to Certificateholders the schedules, statements or information at such
times and in such manner as may be required  thereby;  (b) within thirty days of
the Closing  Date,  furnish or cause to be  furnished  to the  Internal  Revenue
Service,  on Forms 8811 or as otherwise  may be required by the Code,  the name,
title,  address,  and  telephone  number of the person  that the  Holders of the
Certificates  may contact for tax information  relating  thereto,  together with
such  additional  information  as may be required by such Form,  and update such
information at the time or times in the manner required by the Code; (c) make or
cause to be made elections that such assets be treated as a REMIC on the federal
tax return for its first taxable year (and, if necessary, under applicable state
law);  (d) prepare and forward,  or cause to be prepared and  forwarded,  to the
Certificateholders and to the Internal Revenue Service and, if necessary,  state
tax authorities,  all information returns and reports as and when required to be
provided to them in  accordance  with the REMIC  Provisions,  including  without
limitation,  the calculation of any original issue discount using the prepayment
assumption; (e) provide information necessary for the computation of tax imposed
on the  transfer of a Residual  Certificate  to a Person that is not a Permitted
Transferee,  or an agent  (including a broker,  nominee or other middleman) of a

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Non-Permitted  Transferee,  or a  pass-through  entity in which a  Non-Permitted
Transferee is the record holder of an interest (the reasonable cost of computing
and  furnishing  such  information  may be charged to the Person liable for such
tax); (f) to the extent that they are under its control conduct matters relating
to such  assets at all times  that any  Certificates  are  outstanding  so as to
maintain the status as a REMIC under the REMIC Provisions;  (g) not knowingly or
intentionally  take any action or omit to take any action  that would  cause the
termination of any REMIC status; (h) pay, from the sources specified in the last
paragraph  of this  Section  8.11,  the  amount  of any  federal  or state  tax,
including  prohibited  transaction taxes as described below, imposed on any such
REMIC  prior to its  termination  when and as the same shall be due and  payable
(but such  obligation  shall not prevent  the  Trustee or any other  appropriate
Person from  contesting  any such tax in appropriate  proceedings  and shall not
prevent the Trustee from  withholding  payment of such tax, if permitted by law,
pending the outcome of such  proceedings);  (i) ensure  that  federal,  state or
local income tax or  information  returns shall be signed by the Trustee or such
other  person as may be  required  to sign such  returns by the Code or state or
local laws,  regulations  or rules;  (j) maintain  records  relating to any such
REMIC, including but not limited to the income, expenses, assets and liabilities
thereof and the fair market value and adjusted basis of the assets determined at
such  intervals  as may be required by the Code,  as may be necessary to prepare
the foregoing returns, schedules, statements or information; and (k) as and when
necessary and  appropriate,  represent any such REMIC in any  administrative  or
judicial  proceedings  relating to an examination  or audit by any  governmental
taxing authority, request an administrative adjustment as to any taxable year of
any such REMIC,  enter into settlement  agreements with any governmental  taxing
agency,  extend any statute of limitations  relating to any tax item of any such
REMIC,  and  otherwise  act on behalf of any such REMIC in  relation  to any tax
matter or controversy involving it.

      In order to enable the Trustee to perform its duties as set forth  herein,
the Depositor shall provide, or cause to be provided,  to the Trustee within ten
(10) days  after  the  Closing  Date all  information  or data that the  Trustee
requests  in writing  and  determines  to be  relevant  for tax  purposes to the
valuations  and  offering  prices  of  the  Certificates,   including,   without
limitation,  the price, yield, prepayment assumption and projected cash flows of
the Certificates and the Mortgage Loans. Thereafter, the Depositor shall provide
to the Trustee  promptly  upon written  request  therefor,  any such  additional
information or data that the Trustee may, from time to time,  reasonably request
in order to enable the  Trustee to perform its duties as set forth  herein.  The
Depositor hereby indemnifies the Trustee for any losses,  liabilities,  damages,
claims or expenses of the Trustee arising from any errors or  miscalculations of
the Trustee  that result from any  failure of the  Depositor  to provide,  or to
cause to be provided,  accurate  information  or data to the Trustee on a timely
basis.

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      In the event that any tax is imposed on "prohibited  transactions"  of any
REMIC as defined in Section  860F(a)(2)  of the Code,  on the "net  income  from
foreclosure property" of any REMIC as defined in Section 860G(c) of the Code, on
any  contribution to any REMIC after the Startup Day pursuant to Section 860G(d)
of the Code, or any other tax is imposed,  if not paid as otherwise provided for
herein,  such tax shall be paid by (i) the Trustee, if any such other tax arises
out of or results from a breach by the Trustee of any of its  obligations  under
this Agreement which breach was caused by its negligence or willful  misconduct,
(ii) the Master  Servicer,  in the case of any such  minimum tax, or if such tax
arises out of or results  from a breach by the Master  Servicer  of any of their
obligations  under this Agreement,  (iii) the Seller, if any such tax arises out
of or results  from the  Seller's  obligation  to  repurchase  a  Mortgage  Loan
pursuant to Section 2.2 or 2.3 or (iv) in all other cases,  or in the event that
the Trustee,  the Master  Servicer or the Seller fails to honor its  obligations
under the preceding  clauses (i), (ii) or (iii),  any such tax will be paid with
amounts  otherwise to be distributed to the  Certificateholders,  as provided in
Section 3.8(b).

      SECTION 8.12 Periodic Filings.

      The Depositor hereby directs the Trustee to prepare,  execute (pursuant to
a limited power of attorney  given to the Trustee by the  Depositor) and file on
behalf of the  Depositor  all periodic  reports  required  under the  Securities
Exchange  Act of 1934 in  conformity  with the terms of the  "no-action"  relief
granted  by  the  SEC  to  issuers  of  asset-backed   securities  such  as  the
Certificates  and the Trustee  hereby agrees to do so. The Master  Servicer will
also  prepare and execute any  certifications  to be filed with the Form 10-K as
required  under  the   Sarbanes-Oxley  Act  of  2002.  In  connection  with  the
preparation  and filing of such periodic  reports,  the Depositor and the Master
Servicer shall timely provide to the Trustee all material information  available
to them which is required  to be included in such  reports and not known to them
to be in the possession of the Trustee and such other information as the Trustee
reasonably  may  request  from  either of them and  otherwise  reasonably  shall
cooperate with the Trustee.  The Trustee shall have no liability with respect to
any failure to properly prepare or file such periodic reports  resulting from or
relating to the  Trustee's  inability or failure to obtain any  information  not
resulting from its own negligence or willful misconduct.

                                   ARTICLE IX
                                   TERMINATION

      SECTION 9.1  Termination  upon  Liquidation  or  Purchase of all  Mortgage
Loans.

      Subject  to Section  9.3,  the  obligations  and  responsibilities  of the
Depositor,  the Master  Servicer and the Trustee  created hereby with respect to
the Trust Fund shall  terminate  upon the  earlier  of (a) the  purchase  by the
Master  Servicer of all  Mortgage  Loans (and REO  Properties)  remaining in the
Trust  Fund at the price  equal to the sum of (i) 100% of the  Stated  Principal
Balance  of each  Mortgage  Loan  (other  than a  Mortgage  Loan  that  has been
foreclosed and subject to clause (ii)) plus one month's accrued interest thereon
at the applicable  Adjusted  Mortgage Rate, (ii) the lesser of (x) the appraised
value  of any  REO  Property  as  determined  by the  higher  of two  appraisals
completed by two independent  appraisers  selected by the Master Servicer at the
expense of the Master  Servicer  and (y) the  Stated  Principal  Balance of each
Mortgage  Loan related to any REO  Property,  plus  accrued and unpaid  interest
thereon  at the  applicable  Adjusted  Mortgage  Rate,  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,
and (b) the later of (i) the maturity or other  liquidation (or any Advance with

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respect  thereto) of the last Mortgage Loan  remaining in the Trust Fund and the
disposition of all REO Property and (ii) the distribution to  Certificateholders
of all amounts required to be distributed to them pursuant to this Agreement. In
no event shall the trusts created hereby  continue beyond the earlier of (i) the
expiration  of 21 years from the death of the  survivor  of the  descendants  of
Joseph P. Kennedy,  the late Ambassador of the United States to the Court of St.
James's,  living on the date hereof, and (ii) the Latest Possible Maturity Date.
The right to purchase all Mortgage Loans and REO  Properties  pursuant to clause
(a) above shall be conditioned upon the aggregate of the Pool Principal Balances
for all of the Mortgage Pools, at the time of any such  repurchase,  aggregating
less than ten percent of the aggregate  Cut-off Date Pool  Principal  Balance of
all of the Mortgage Pools.

      SECTION 9.2 Final Distribution on the Certificates.

      If on any  Determination  Date, the Master Servicer  determines that there
are no Outstanding Mortgage Loans and no other funds or assets in the Trust Fund
other  than the funds in the  Certificate  Account,  the Master  Servicer  shall
direct  the  Trustee  promptly  to  send a  final  distribution  notice  to each
Certificateholder.  If the Master  Servicer  elects to terminate  the Trust Fund
pursuant to clause (a) of Section 9.1, at least 20 days prior to the date notice
is to be mailed to the affected  Certificateholders,  the Master  Servicer shall
notify the Depositor and the Trustee of the date the Master Servicer  intends to
terminate the Trust Fund and of the applicable  repurchase price of the Mortgage
Loans and REO Properties.

      Notice of any termination of the Trust Fund,  specifying the  Distribution
Date on which Certificateholders may surrender their Certificates for payment of
the final distribution and cancellation,  shall be given promptly by the Trustee
by letter to  Certificateholders  mailed  not  earlier  than the 10th day and no
later  than the 15th day of the month  next  preceding  the month of such  final
distribution. Any such notice shall specify (a) the Distribution Date upon which
final  distribution  on the  Certificates  will be made  upon  presentation  and
surrender of  Certificates at the office therein  designated,  (b) the amount of
such final distribution,  (c) the location of the office or agency at which such
presentation  and surrender must be made, and (d) that the Record Date otherwise
applicable to such Distribution Date is not applicable, distributions being made
only upon  presentation  and surrender of the Certificates at the office therein
specified.  The Master  Servicer  will give such notice to each Rating Agency at
the time such notice is given to Certificateholders.

      In the event such  notice is given,  the Master  Servicer  shall cause all
funds in the  Certificate  Account to be  remitted to the Trustee for deposit in
the applicable subaccounts of the Distribution Account on the Business Day prior
to the applicable Distribution Date in an amount equal to the final distribution
in respect of the  Certificates.  Upon such final  deposit  with  respect to the
Trust Fund and the receipt by the Trustee of a Request for Release therefor, the
Trustee shall promptly release to the Master Servicer the Mortgage Files for the
Mortgage Loans.

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<PAGE>

      Upon  presentation  and surrender of the  Certificates,  the Trustee shall
cause to be distributed to the  Certificateholders  of each Class,  in the order
set forth in Section 4.2 hereof, on the final  Distribution Date, in the case of
the Certificateholders,  in proportion to their respective Percentage Interests,
with respect to  Certificateholders of the same Class, an amount equal to (i) as
to each Class of Regular  Certificates,  the Class  Certificate  Balance thereof
plus accrued interest  thereon in the case of an interest  bearing  Certificate,
and (ii) as to the Residual  Certificates,  the amount, if any, which remains on
deposit in the  Distribution  Account  (other than the amounts  retained to meet
claims) after application pursuant to clause (i) above.

      In the event  that any  affected  Certificateholders  shall not  surrender
Certificates for cancellation  within six months after the date specified in the
above mentioned  written notice,  the Trustee shall give a second written notice
to  the  remaining   Certificateholders  to  surrender  their  Certificates  for
cancellation and receive the final distribution with respect thereto.  If within
six months after the second  notice all the  applicable  Certificates  shall not
have been surrendered for cancellation,  the Trustee may take appropriate steps,
or may appoint an agent to take  appropriate  steps,  to contact  the  remaining
Certificateholders  concerning  surrender  of their  Certificates,  and the cost
thereof  shall be paid out of the funds and other  assets which remain a part of
the Trust  Fund.  If within one year after the  second  notice all  Certificates
shall not have been  surrendered  for  cancellation,  the Holders of each of the
Class II-A-R  Certificates  shall be entitled to all  unclaimed  funds and other
assets of the Trust  Fund,  held for  distribution  to such  Certificateholders,
which remain subject hereto.

      SECTION 9.3 Additional Termination Requirements.

      (a)   In the event the Master  Servicer  exercises its purchase  option as
            provided  in Section  9.1,  the Trust  Fund and each  REMIC  created
            hereunder  shall be  terminated  in  accordance  with the  following
            additional  requirements,  unless the Trustee has been supplied with
            an Opinion of Counsel, at the expense of the Master Servicer, to the
            effect  that the  failure to comply  with the  requirements  of this
            Section  9.3  will  not (i)  result  in the  imposition  of taxes on
            "prohibited transactions" on any REMIC as defined in Section 860F of
            the Code,  or (ii)  cause any REMIC to fail to qualify as a REMIC at
            any time that any Certificates are outstanding:

            (1)   Within 90 days prior to the final  Distribution Date set forth
                  in the notice given by the Master  Servicer under Section 9.2,
                  the Master  Servicer  shall  prepare and the  Trustee,  at the
                  expense of the "tax  matters  person,"  shall  adopt a plan of
                  complete  liquidation within the meaning of Section 860F(a)(4)
                  of the  Code  for  each  REMIC  created  hereunder  which,  as
                  evidenced  by an Opinion of Counsel  addressed  to the Trustee
                  (which  opinion  shall not be an expense of the Trustee or the
                  Tax Matters  Person),  meets the  requirements  of a qualified
                  liquidation; and

            (2)   Within 90 days  after the time of  adoption  of such  plans of
                  complete liquidation, the Trustee shall sell all of the assets
                  of  the  Trust  Fund  to  the  Master  Servicer  for  cash  in
                  accordance with Section 9.1.

      (b)   The  Trustee  as agent for any REMIC  established  hereunder  hereby
            agrees to adopt and sign such a plan of  complete  liquidation  upon
            the written request of the Master  Servicer,  and the receipt of the
            Opinion of Counsel referred to in Section 9.3(a)(1) and to take such
            other action in connection  therewith as may be reasonably requested
            by the Master Servicer.

      (c)   By their acceptance of the Certificates,  the Holders thereof hereby
            authorize  the Master  Servicer  to prepare and the Trustee to adopt
            and sign plans of complete liquidation.

                                   ARTICLE X
                                   [RESERVED]

                                   ARTICLE XI
                            MISCELLANEOUS PROVISIONS

      SECTION 11.1 Amendment.

      This  Agreement  may be amended  from time to time by the  Depositor,  the
Master   Servicer   and  the   Trustee   without  the  consent  of  any  of  the
Certificateholders  (i) to cure any  ambiguity  or mistake,  (ii) to correct any
defective  provision  herein or to supplement any provision  herein which may be
inconsistent with any other provision herein,  (iii) to add to the duties of the
Depositor,  the Seller or the Master Servicer,  (iv) to add any other provisions
with respect to matters or questions arising hereunder or (v) to modify,  alter,
amend,  add to or  rescind  any of the  terms or  provisions  contained  in this
Agreement;  provided that any action pursuant to clauses (iv) or (v) above shall
not, as  evidenced  by an Opinion of Counsel  delivered  to the  Trustee  (which
Opinion of Counsel  shall not be an expense of the  Trustee or the Trust  Fund),
adversely affect in any material respect the interests of any Certificateholder;
provided, however, that the amendment shall not be deemed to adversely affect in
any  material  respect the  interests  of the  Certificateholders  if the Person
requesting  the amendment  obtains a letter from each Rating Agency stating that
the  amendment  would  not  result  in  the  downgrading  or  withdrawal  of the
respective  ratings then assigned to the  Certificates;  it being understood and
agreed that any such letter in and of itself will not represent a  determination
as to the  materiality of any such amendment and will represent a  determination
only as to the  credit  issues  affecting  any such  rating.  The  Trustee,  the
Depositor  and the  Master  Servicer  also may at any time and from time to time
amend this Agreement  without the consent of the  Certificateholders  to modify,
eliminate or add to any of its  provisions  to such extent as shall be necessary
or helpful to (i) maintain the qualification of any REMIC established  hereunder
as a REMIC under the Code,  (ii) avoid or minimize the risk of the imposition of
any tax on any REMIC established  hereunder pursuant to the Code that would be a
claim at any time prior to the final  redemption  of the  Certificates  or (iii)
comply with any other  requirements  of the Code,  provided that the Trustee has
been  provided an Opinion of Counsel,  which  opinion shall be an expense of the
party  requesting  such  opinion  but in any case shall not be an expense of the
Trustee  or the Trust  Fund,  to the effect  that such  action is  necessary  or
helpful  to, as  applicable,  (i)  maintain  such  qualification,  (ii) avoid or
minimize the risk of the  imposition of such a tax or (iii) comply with any such
requirements of the Code.

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<PAGE>

      This Agreement may also be amended from time to time by the Depositor, the
Master Servicer and the Trustee with the consent of the Holders of a Majority in
Interest  of each Class of  Certificates  affected  thereby  for the  purpose of
adding any  provisions  to or changing in any manner or  eliminating  any of the
provisions  of this  Agreement  or of  modifying in any manner the rights of the
Holders of  Certificates;  provided,  however,  that no such amendment shall (i)
reduce in any manner the amount of, or delay the timing of, payments required to
be  distributed  on any  Certificate  without  the consent of the Holder of such
Certificate,  (ii) adversely affect in any material respect the interests of the
Holders of any Class of Certificates in a manner other than as described in (i),
without the consent of the Holders of Certificates of such Class evidencing,  as
to such  Class,  Percentage  Interests  aggregating  66%,  or (iii)  reduce  the
aforesaid  percentages  of  Certificates  the  Holders of which are  required to
consent to any such  amendment,  without  the consent of the Holders of all such
Certificates then outstanding.

      Notwithstanding  any  contrary  provision of this  Agreement,  the Trustee
shall not consent to any amendment to this Agreement  unless it shall have first
received an Opinion of  Counsel,  which  opinion  shall not be an expense of the
Trustee or the Trust Fund, to the effect that such  amendment will not cause the
imposition   of  any   tax   on  any   REMIC   established   hereunder   or  the
Certificateholders  or cause any REMIC established  hereunder to fail to qualify
as a REMIC at any time that any Certificates are outstanding.

      Promptly after the execution of any amendment to this Agreement  requiring
the  consent  of   Certificateholders,   the  Trustee  shall   furnish   written
notification   of  the   substance   or  a  copy  of  such   amendment  to  each
Certificateholder and each Rating Agency.

      It shall not be necessary for the consent of Certificateholders under this
Section to approve the particular form of any proposed  amendment,  but it shall
be sufficient if such consent shall approve the substance thereof. The manner of
obtaining  such consents and of evidencing  the  authorization  of the execution
thereof by Certificateholders shall be subject to such reasonable regulations as
the Trustee may prescribe.

      Nothing  in this  Agreement  shall  require  the  Trustee to enter into an
amendment without receiving an Opinion of Counsel (which Opinion shall not be an
expense of the Trustee or the Trust Fund),  satisfactory to the Trustee that (i)
such amendment is permitted and is not prohibited by this Agreement and that all
requirements  for amending  this  Agreement  have been complied  with;  and (ii)
either (A) the amendment does not adversely  affect in any material  respect the
interests  of any  Certificateholder  or (B) the  conclusion  set  forth  in the
immediately  preceding clause (A) is not required to be reached pursuant to this
Section 11.1.

      SECTION 11.2 Recordation of Agreement; Counterparts.

      This Agreement is subject to recordation in all appropriate public offices
for real property records in all the counties or other comparable  jurisdictions
in which any or all of the properties subject to the Mortgages are situated, and
in any other appropriate public recording office or elsewhere,  such recordation
to be effected by the Master Servicer at its expense,  but only upon direction a
majority  of  the   Certificateholders  to  the  effect  that  such  recordation
materially and beneficially affects the interests of the Certificateholders.

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<PAGE>

      For the purpose of  facilitating  the  recordation  of this  Agreement  as
herein  provided  and for other  purposes,  this  Agreement  may be executed (by
facsimile or otherwise)  simultaneously  in any number of counterparts,  each of
which  counterparts  shall be deemed to be an  original,  and such  counterparts
shall constitute but one and the same instrument.

      SECTION 11.3 Governing Law.

      THIS  AGREEMENT  (OTHER THAN  SECTION 2.1 HEREOF)  SHALL BE  CONSTRUED  IN
ACCORDANCE  WITH AND GOVERNED BY THE  SUBSTANTIVE  LAWS OF THE STATE OF NEW YORK
APPLICABLE TO  AGREEMENTS  MADE AND TO BE PERFORMED IN THE STATE OF NEW YORK AND
THE   OBLIGATIONS,   RIGHTS  AND   REMEDIES  OF  THE  PARTIES   HERETO  AND  THE
CERTIFICATEHOLDERS SHALL BE DETERMINED IN ACCORDANCE WITH SUCH LAWS. SECTION 2.1
OF THIS  AGREEMENT  SHALL BE  CONSTRUED IN  ACCORDANCE  WITH AND GOVERNED BY THE
SUBSTANTIVE  LAWS OF THE STATE OF DELAWARE  APPLICABLE TO AGREEMENTS MADE AND TO
BE PERFORMED IN THE STATE OF DELAWARE AND THE  OBLIGATIONS,  RIGHTS AND REMEDIES
OF THE PARTIES  HERETO AND THE  CERTIFICATEHOLDERS  UNDER SUCH SECTION  SHALL BE
DETERMINED IN ACCORDANCE WITH SUCH LAWS.

      SECTION 11.4 Intention of Parties.

      It is the express  intent of the parties hereto that the conveyance of the
Trust Fund by the  Depositor  to the Trustee be, and be construed  as,  absolute
sales thereof to the Trustee.  It is, further,  not the intention of the parties
that  such  conveyances  be  deemed a pledge  thereof  by the  Depositor  to the
Trustee. However, in the event that,  notwithstanding the intent of the parties,
such assets are held to be the  property of the  Depositor,  or if for any other
reason this  Agreement  is held or deemed to create a security  interest in such
assets,  then (i) this  Agreement  shall be  deemed to be a  security  agreement
within the meaning of the Uniform  Commercial  Code of the State of New York and
(ii) the  conveyance  provided  for in this  Agreement  shall be deemed to be an
assignment  and a grant by the Depositor to the Trustee,  for the benefit of the
Certificateholders,  of a security interest in all of the assets that constitute
the Trust Fund, whether now owned or hereafter acquired.

      The Depositor,  for the benefit of the  Certificateholders,  shall, to the
extent consistent with this Agreement,  take such actions as may be necessary to
ensure that, if this Agreement were deemed to create a security  interest in the
Trust Fund,  such security  interest would be deemed to be a perfected  security
interest of first priority  under  applicable law and will be maintained as such
throughout the term of the Agreement. The Depositor shall arrange for filing any
Uniform Commercial Code continuation  statements in connection with any security
interest   granted  or   assigned   to  the  Trustee  for  the  benefit  of  the
Certificateholders.

                                       98
<PAGE>

      SECTION 11.5 Notices.

(a)   The Trustee shall use its best efforts to promptly  provide notice to each
      Rating Agency with respect to each of the following of which it has actual
      knowledge:

      (1)   Any material change or amendment to this Agreement;

      (2)   The occurrence of any Event of Default that has not been cured;

      (3)   The resignation or termination of the Master Servicer or the Trustee
            and the appointment of any successor;

      (4)   The repurchase or substitution of Mortgage Loans pursuant to Section
            2.3;

      (5)   The final payment to Certificateholders; and

      (6)   Any rating  action  involving  the  long-term  credit  rating of the
            Master  Servicer,  which  notice shall be made by  first-class  mail
            within two Business  Days after the Trustee  gains actual  knowledge
            thereof.

      In addition,  the Trustee  shall  promptly  furnish to each Rating  Agency
copies of the following:

      (7)   Each report to Certificateholders described in Section 4.6;

      (8)   Each annual statement as to compliance described in Section 3.16;

      (9)   Each  annual  independent  public   accountants'   servicing  report
            described in Section 3.17; and

      (10)  Any notice of a purchase of a Mortgage Loan pursuant to Section 2.2,
            2.3 or 3.11.

(b)   All directions, demands, authorizations, consents, waivers, communications
      and notices hereunder shall be in writing and shall be deemed to have been
      duly given when delivered to by first class mail, facsimile or courier (a)
      in the case of the Depositor,  First Horizon Asset  Securities  Inc., 4000
      Horizon Way, Irving, Texas 75063, Attention: Alfred Chang; (b) in the case
      of the Master Servicer, First Horizon Home Loan Corporation,  4000 Horizon
      Way, Irving, Texas 75063,  Attention:  Larry P. Cole or such other address
      as may be  hereafter  furnished  to the  Depositor  and the Trustee by the
      Master  Servicer in writing;  (c) in the case of the Trustee,  The Bank of
      New York, 101 Barclay  Street,  8W, New York,  New York 10286,  Attention:
      Diane Pickett,  or such other address as the Trustee may hereafter furnish
      to the  Depositor  or Master  Servicer;  and (d) in the case of the Rating
      Agencies,  the address specified therefor in the definition  corresponding
      to the name of such Rating Agency. Notices to Certificateholders  shall be
      deemed given when mailed, first class postage prepaid, to their respective
      addresses appearing in the Certificate Register.

                                       99
<PAGE>

      SECTION 11.6 Severability of Provisions.

      If any one or more of the  covenants,  agreements,  provisions or terms of
this  Agreement  shall be for any  reason  whatsoever  held  invalid,  then such
covenants,  agreements,  provisions or terms shall be deemed  severable from the
remaining covenants, agreements, provisions or terms of this Agreement and shall
in no way affect the validity or  enforceability of the other provisions of this
Agreement or of the Certificates or the rights of the Holders thereof.

      SECTION 11.7 Assignment.

      Notwithstanding  anything  to the  contrary  contained  herein,  except as
provided  in Section  6.2,  this  Agreement  may not be  assigned  by the Master
Servicer without the prior written consent of the Trustee and Depositor.

      SECTION 11.8 Limitation on Rights of Certificateholders.

      The death or  incapacity  of any  Certificateholder  shall not  operate to
terminate  this  Agreement  or  the  trust  created  hereby,  nor  entitle  such
Certificateholder's  legal  representative or heirs to claim an accounting or to
take any  action or  commence  any  proceeding  in any court for a  petition  or
winding  up of the  trust  created  hereby,  or  otherwise  affect  the  rights,
obligations and liabilities of the parties hereto or any of them.

      No  Certificateholder  shall have any right to vote  (except  as  provided
herein) or in any manner  otherwise  control the operation and management of the
Trust Fund, or the obligations of the parties hereto,  nor shall anything herein
set forth or  contained in the terms of the  Certificates  be construed so as to
constitute the Certificateholders from time to time as partners or members of an
association; nor shall any Certificateholder be under any liability to any third
party by reason of any action taken by the parties to this Agreement pursuant to
any provision hereof.

      No Certificateholder  shall have any right by virtue or by availing itself
of any provisions of this Agreement to institute any suit,  action or proceeding
in equity or at law upon or under or with respect to this Agreement, unless such
Holder  previously  shall have given to the Trustee a written notice of an Event
of Default and of the continuance  thereof,  as herein provided,  and unless the
Holders  of  Certificates  evidencing  not less  than 25% of the  Voting  Rights
evidenced  by the  Certificates  shall  also have made  written  request  to the
Trustee to institute such action,  suit or proceeding in its own name as Trustee
hereunder and shall have offered to the Trustee such reasonable  indemnity as it
may require against the costs,  expenses, and liabilities to be incurred therein
or  thereby,  and the  Trustee,  for 60 days after its  receipt of such  notice,
request and offer of indemnity  shall have neglected or refused to institute any
such action,  suit or proceeding;  it being  understood and intended,  and being
expressly    covenanted   by   each    Certificateholder    with   every   other
Certificateholder  and the Trustee,  that no one or more Holders of Certificates
shall have any right in any manner  whatever by virtue or by availing  itself or
themselves of any provisions of this  Agreement to affect,  disturb or prejudice
the rights of the Holders of any other of the Certificates, or to obtain or seek
to obtain priority over or preference to any other such Holder or to enforce any
right under this  Agreement,  except in the manner  herein  provided and for the
common benefit of all Certificateholders.  For the protection and enforcement of
the provisions of this Section 11.8,  each and every  Certificateholder  and the
Trustee  shall be entitled  to such  relief as can be given  either at law or in
equity.

                                      100
<PAGE>

      SECTION 11.9 Inspection and Audit Rights.

      The Master  Servicer  agrees that,  on reasonable  prior  notice,  it will
permit and will  cause each  Subservicer  to permit  any  representative  of the
Depositor or the Trustee during the Master  Servicer's normal business hours, to
examine  all the books of  account,  records,  reports  and other  papers of the
Master  Servicer  relating to the  Mortgage  Loans,  to make copies and extracts
therefrom,  to cause such books to be audited by  independent  certified  public
accountants selected by the Depositor or the Trustee and to discuss its affairs,
finances  and  accounts  relating  to the  Mortgage  Loans  with  its  officers,
employees and independent  public  accountants (and by this provision the Master
Servicer hereby authorizes said accountants to discuss with such  representative
such affairs,  finances and accounts), all at such reasonable times and as often
as may be  reasonably  requested.  Any  out-of-pocket  expense  incident  to the
exercise by the  Depositor  or the Trustee of any right under this  Section 11.9
shall be borne by the party requesting such inspection;  all other such expenses
shall be borne by the Master Servicer or the related Subservicer.

      SECTION 11.10 Certificates Nonassessable and Fully Paid.

      It is the intention of the Depositor that Certificateholders  shall not be
personally  liable for  obligations of the Trust Fund, that the interests in the
Trust Fund represented by the Certificates shall be nonassessable for any reason
whatsoever,  and that the Certificates,  upon due authentication  thereof by the
Trustee pursuant to this Agreement, are and shall be deemed fully paid.

      SECTION 11.11 Limitations on Actions; No Proceedings.

      (a)   Other than  pursuant to this  Agreement,  or in  connection  with or
            incidental  to the  provisions  or purposes of this  Agreement,  the
            trust created hereunder shall not (i) issue debt or otherwise borrow
            money,  (ii) merge or consolidate with any other entity  reorganize,
            liquidate or transfer all or substantially  all of its assets to any
            other entity,  or (iii) otherwise engage in any activity or exercise
            any power not provided for in this Agreement.

      (b)   Notwithstanding  any  prior  termination  of  this  Agreement,   the
            Trustee,  the Master  Servicer and the Depositor shall not, prior to
            the date which is one year and one day after the termination of this
            Agreement,  acquiesce,  petition  or  otherwise  invoke or cause any
            Person to invoke the  process of any court or  government  authority
            for the  purpose of  commencing  or  sustaining  a case  against the
            Depositor  or the Trust Fund under any federal or state  bankruptcy,
            insolvency   or  other   similar  law  or   appointing  a  receiver,
            liquidator,  assignee,  trustee,  custodian,  sequestrator  or other
            similar  official  of  the  Depositor  or  the  Trust  Fund  or  any
            substantial  part of their  respective  property,  or  ordering  the
            winding up or  liquidation  of the affairs of the  Depositor  or the
            Trust Fund.

                                      101
<PAGE>

      SECTION 11.12 Acknowledgment of Seller.

      Seller hereby acknowledges the provisions of this Agreement, including the
obligations  under Sections  2.1(a),  2.2, 2.3(b) and 8.11 of this Agreement and
further  acknowledges the Depositor's  assignment of its rights and remedies for
the breach of the  representations  and warranties made by the Seller under MLPA
I.

                                   * * * * * *

                                      102
<PAGE>
      IN WITNESS  WHEREOF,  the Depositor,  the Trustee and the Master  Servicer
have  caused  their  names to be  signed  hereto  by their  respective  officers
thereunto duly authorized as of the day and year first above written.

                         FIRST HORIZON ASSET SECURITIES INC.,
                         as Depositor

                         By: ________________________________
                             Alfred Chang
                             Vice President

                         THE BANK OF NEW YORK,
                         not in its individual capacity, but solely as Trustee

                         By: ________________________________
                             Diane Pickett
                             Vice President

                         FIRST HORIZON HOME LOAN CORPORATION, in its capacity as
                         Master Servicer

                         By: ________________________________
                             Terry McCoy
                             Executive Vice President

The foregoing agreement
is hereby acknowledged
and accepted as of the
date first above written:

FIRST HORIZON HOME LOAN CORPORATION,
in its capacity as Seller__

By: ________________________
    Terry McCoy
    Executive Vice President

                                      103
<PAGE>

                                   SCHEDULE I

                       First Horizon Asset Securities Inc.
               Mortgage Pass-Through Certificates Series 2005-AR4

                             Mortgage Loan Schedule

                      [Available Upon Request from Trustee]

                                      I-1
<PAGE>

                                   SCHEDULE II

                       First Horizon Asset Securities Inc.
               Mortgage Pass-Through Certificates Series 2005-AR4

              Representations and Warranties of the Master Servicer

      First Horizon Home Loan  Corporation  ("First  Horizon")  hereby makes the
representations  and  warranties  set forth in this Schedule II to the Depositor
and the Trustee,  as of the Closing Date, or if so specified  herein,  as of the
Cut-off Date.  Capitalized terms used but not otherwise defined in this Schedule
II shall  have the  meanings  ascribed  thereto  in the  Pooling  and  Servicing
Agreement   (the   "Pooling   and   Servicing   Agreement")   relating   to  the
above-referenced  Series, among First Horizon, as master servicer, First Horizon
Asset Securities Inc., as depositor, and The Bank of New York, as trustee.

            (1) First Horizon is duly organized as a Kansas  corporation  and is
validly  existing and in good standing under the laws of the State of Kansas and
is duly  authorized and qualified to transact any and all business  contemplated
by the Pooling and  Servicing  Agreement to be conducted by First Horizon in any
state in which a Mortgaged  Property  is located or is  otherwise  not  required
under  applicable  law to effect such  qualification  and,  in any event,  is in
compliance  with the  doing  business  laws of any  such  state,  to the  extent
necessary to ensure its ability to enforce each  Mortgage  Loan,  to service the
Mortgage  Loans in  accordance  with  the  terms of the  Pooling  and  Servicing
Agreement  and to perform  any of its other  obligations  under the  Pooling and
Servicing Agreement in accordance with the terms thereof.

            (2) First  Horizon has the full  corporate  power and  authority  to
service each Mortgage  Loan, and to execute,  deliver and perform,  and to enter
into and consummate the  transactions  contemplated by the Pooling and Servicing
Agreement and has duly authorized by all necessary  corporate action on the part
of First  Horizon the  execution,  delivery and  performance  of the Pooling and
Servicing Agreement;  and the Pooling and Servicing Agreement,  assuming the due
authorization,  execution  and delivery  thereof by the other  parties  thereto,
constitutes a legal, valid and binding obligation of First Horizon,  enforceable
against  First  Horizon  in  accordance  with  its  terms,  except  that (a) the
enforceability  thereof may be limited by  bankruptcy,  insolvency,  moratorium,
receivership and other similar laws relating to creditors'  rights generally and
(b) the  remedy of  specific  performance  and  injunctive  and  other  forms of
equitable  relief may be subject to equitable  defenses and to the discretion of
the court before which any proceeding therefor may be brought.

            (3)  The  execution  and  delivery  of  the  Pooling  and  Servicing
Agreement by First Horizon, the servicing of the Mortgage Loans by First Horizon
under the Pooling and Servicing Agreement,  the consummation of any other of the
transactions  contemplated  by the  Pooling  and  Servicing  Agreement,  and the
fulfillment of or compliance  with the terms thereof are in the ordinary  course
of business of First Horizon and will not (A) result in a material breach of any
term or provision of the charter or by-laws of First  Horizon or (B)  materially
conflict with,  result in a material  breach,  violation or acceleration  of, or
result in a material default under, the terms of any other material agreement or
instrument to which First Horizon is a party or by which it may be bound, or (C)
constitute a material violation of any statute,  order or regulation  applicable
to First  Horizon  of any  court,  regulatory  body,  administrative  agency  or
governmental body having  jurisdiction over First Horizon;  and First Horizon is
not in breach or violation of any material indenture or other material agreement
or instrument, or in violation of any statute, order or regulation of any court,
regulatory body,  administrative agency or governmental body having jurisdiction
over it which breach or violation may materially  impair First Horizon's ability
to  perform  or meet any of its  obligations  under the  Pooling  and  Servicing
Agreement.

                                      II-1
<PAGE>

            (4) No  litigation  is  pending  or, to the best of First  Horizon's
knowledge, threatened against First Horizon that would prohibit the execution or
delivery of, or performance under, the Pooling and Servicing  Agreement by First
Horizon.

            (5) First  Horizon  is a member of MERS in good  standing,  and will
comply  in all  material  respects  with the  rules  and  procedures  of MERS in
connection  with the servicing of the MERS  Mortgage  Loans for as along as such
Mortgage Loans are registered with MERS.

                                      II-2
<PAGE>

                                  SCHEDULE III

                       First Horizon Asset Securities Inc.
               Mortgage Pass-Through Certificates Series 2005-AR4

                     Form of Monthly Master Servicer Report

                              [Begins on Next Page]

                                     III-1
<PAGE>

                                    EXHIBIT A

                          [FORM OF SENIOR CERTIFICATE]

UNLESS THIS  CERTIFICATE  IS PRESENTED BY AN  AUTHORIZED  REPRESENTATIVE  OF THE
DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION  ("DTC"),  TO THE ISSUER OR ITS
AGENT FOR REGISTRATION OF TRANSFER,  EXCHANGE,  OR PAYMENT,  AND ANY CERTIFICATE
ISSUED  IS  REGISTERED  IN THE NAME OF CEDE & CO.  OR IN SUCH  OTHER  NAME AS IS
REQUESTED  BY AN  AUTHORIZED  REPRESENTATIVE  OF DTC (AND ANY PAYMENT IS MADE TO
CEDE  &  CO.  OR  TO  SUCH  OTHER  ENTITY  AS  IS  REQUESTED  BY  AN  AUTHORIZED
REPRESENTATIVE  OF DTC), ANY TRANSFER,  PLEDGE, OR OTHER USE HEREOF FOR VALUE OR
OTHERWISE  BY OR TO ANY PERSON IS  WRONGFUL  INASMUCH  AS THE  REGISTERED  OWNER
HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

SOLELY FOR U.S.  FEDERAL  INCOME TAX PURPOSES,  THIS  CERTIFICATE  IS A "REGULAR
INTEREST" IN A "REAL  ESTATE  MORTGAGE  INVESTMENT  CONDUIT," AS THOSE TERMS ARE
DEFINED, RESPECTIVELY, IN SECTIONS 860G AND 860D OF THE INTERNAL REVENUE CODE OF
1986, AS AMENDED (THE "CODE").

                                      A-1
<PAGE>

Certificate No.                    :
Cut-off Date                       :
First Distribution Date            :
Initial Certificate Balance of
this Certificate ("Denominations") : $
Initial Certificate
Balances of all
Certificate of this
Class                              : $
CUSIP                              :

               First Horizon Mortgage Pass-Through Trust 2005-AR4
               Mortgage Pass-Through Certificates, Series 2005-AR4
                                Class [________]

            evidencing a percentage  interest in the distributions  allocable to
            the  Certificates  of the  above-referenced  Class with respect to a
            Trust Fund consisting primarily of one or more pools of conventional
            mortgage loans (the "Mortgage Loans") secured by first liens on one-
            to four-family residential properties.

                First Horizon Asset Securities Inc., as Depositor

      Principal in respect of this Certificate is  distributable  monthly as set
forth herein. Accordingly,  the Certificate Balance at any time may be less than
the Certificate  Balance as set forth herein. This Certificate does not evidence
an obligation of, or an interest in, and is not guaranteed by the Depositor, the
Master  Servicer  or the Trustee  referred  to below or any of their  respective
affiliates.  Neither this  Certificate  nor the Mortgage Loans are guaranteed or
insured by any governmental agency or instrumentality.

      This certifies  that  __________________  is the  registered  owner of the
Percentage  Interest  evidenced  by this  Certificate  (obtained by dividing the
denomination of this Certificate by the aggregate Initial  Certificate  Balances
of all Certificates of the Class to which this  Certificate  belongs) in certain
monthly  distributions with respect to a Trust Fund consisting  primarily of the
Mortgage  Loans   deposited  by  First  Horizon  Asset   Securities   Inc.  (the
"Depositor").  The Trust Fund was created  pursuant  to a Pooling and  Servicing
Agreement dated as of the Cut-off Date specified above (the  "Agreement")  among
the  Depositor,  First Horizon Home Loan  Corporation,  as master  servicer (the
"Master Servicer"), and The Bank of New York, as trustee (the "Trustee"). To the
extent not defined herein,  the capitalized  terms used herein have the meanings
assigned in the  Agreement.  This  Certificate is issued under and is subject to
the terms,  provisions and conditions of the Agreement,  to which  Agreement the
Holder of this  Certificate  by virtue of the  acceptance  hereof assents and by
which such Holder is bound.

      Reference is hereby made to the further provisions of this Certificate set
forth on the reverse  hereof,  which further  provisions  shall for all purposes
have the same effect as if set forth at this place.

                                      A-2
<PAGE>

      This Certificate  shall not be entitled to any benefit under the Agreement
or be valid for any  purpose  unless  manually  countersigned  by an  authorized
signatory of the Trustee.

                                      A-3
<PAGE>

      IN WITNESS  WHEREOF,  the Trustee has caused this  Certificate  to be duly
executed.

Dated:  August __, 2005

                                          THE BANK OF NEW YORK,
                                          not in its individual capacity,
                                          but solely as Trustee

                                          By: ________________________________
                                              Authorized Signatory of
                                              THE BANK OF NEW YORK
                                              not in its individual capacity,
                                              but solely as Trustee

Countersigned:

By ___________________________
   Authorized Signatory of
   THE BANK OF NEW YORK,
   not in its individual capacity,
   but solely as Trustee

                                      A-4
<PAGE>

                                    EXHIBIT B

                       [FORM OF SUBORDINATED CERTIFICATE]

[UNLESS THIS  CERTIFICATE  IS PRESENTED BY AN AUTHORIZED  REPRESENTATIVE  OF THE
DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION  ("DTC"),  TO THE ISSUER OR ITS
AGENT FOR REGISTRATION OF TRANSFER,  EXCHANGE,  OR PAYMENT,  AND ANY CERTIFICATE
ISSUED  IS  REGISTERED  IN THE NAME OF CEDE & CO.  OR IN SUCH  OTHER  NAME AS IS
REQUESTED  BY AN  AUTHORIZED  REPRESENTATIVE  OF DTC (AND ANY PAYMENT IS MADE TO
CEDE  &  CO.  OR  TO  SUCH  OTHER  ENTITY  AS  IS  REQUESTED  BY  AN  AUTHORIZED
REPRESENTATIVE  OF DTC), ANY TRANSFER,  PLEDGE, OR OTHER USE HEREOF FOR VALUE OR
OTHERWISE  BY OR TO ANY PERSON IS  WRONGFUL  INASMUCH  AS THE  REGISTERED  OWNER
HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.]

SOLELY FOR U.S.  FEDERAL  INCOME TAX PURPOSES,  THIS  CERTIFICATE  IS A "REGULAR
INTEREST" IN A "REAL  ESTATE  MORTGAGE  INVESTMENT  CONDUIT," AS THOSE TERMS ARE
DEFINED, RESPECTIVELY, IN SECTIONS 860G AND 860D OF THE INTERNAL REVENUE CODE OF
1986, AS AMENDED (THE "CODE").

THIS CERTIFICATE IS SUBORDINATED IN RIGHT OF PAYMENT TO CERTAIN  CERTIFICATES AS
DESCRIBED IN THE AGREEMENT REFERRED TO HEREIN.

[THIS  CERTIFICATE HAS NOT BEEN AND WILL NOT BE REGISTERED  UNDER THE SECURITIES
ACT OF 1933, AS AMENDED (THE  "SECURITIES  ACT"),  OR THE SECURITIES LAWS OF ANY
STATE OF THE UNITED STATES ("BLUE SKY LAWS"),  AND SUCH  CERTIFICATE  MAY NOT BE
OFFERED,  RESOLD,  PLEDGED OR OTHERWISE  TRANSFERRED EXCEPT (A) TO A PERSON WHOM
THE SELLER  REASONABLY  BELIEVES IS A QUALIFIED  INSTITUTIONAL  BUYER WITHIN THE
MEANING OF RULE 144A  UNDER THE  SECURITIES  ACT IN A  TRANSACTION  MEETING  THE
REQUIREMENTS  OF RULE 144A,  (B)  PURSUANT  TO AN  EXEMPTION  FROM  REGISTRATION
PROVIDED  BY RULE 144  UNDER  THE  SECURITIES  ACT (IF  AVAILABLE)  OR (C) TO AN
INSTITUTIONAL ACCREDITED INVESTOR AS DEFINED IN RULE 501(a)(1),  (2), (3) OR (7)
OF  REGULATION  D UNDER THE  SECURITIES  ACT IN A  TRANSACTION  EXEMPT  FROM THE
REGISTRATION REQUIREMENTS OF THE SECURITIES ACT, IN EACH CASE IN ACCORDANCE WITH
ANY APPLICABLE BLUE SKY LAWS. NO  REPRESENTATION  IS MADE AS TO THE AVAILABILITY
OF THE EXEMPTION PROVIDED BY RULE 144 FOR RESALES OF THIS CERTIFICATE.]

[NEITHER THIS CERTIFICATE NOR ANY INTEREST HEREIN MAY BE TRANSFERRED  UNLESS THE
TRANSFEREE  REPRESENTS  TO THE TRUSTEE THAT SUCH  TRANSFEREE  IS NOT AN EMPLOYEE
BENEFIT PLAN OR ARRANGEMENT  SUBJECT TO THE EMPLOYEE  RETIREMENT INCOME SECURITY
ACT OF 1974, AS AMENDED ("ERISA"),  OR A PLAN OR ARRANGEMENT  SUBJECT TO SECTION
4975 OF THE  CODE,  OR,  IF  SUCH  PURCHASER  IS AN  INSURANCE  COMPANY  AND THE
CERTIFICATE   HAS  BEEN   SUBJECT  TO  AN   ERISA-QUALIFYING   UNDERWRITING,   A
REPRESENTATION  IN ACCORDANCE  WITH THE PROVISIONS OF THE AGREEMENT  REFERRED TO
HEREIN,  OR DELIVERS TO THE TRUSTEE AN OPINION OF COUNSEL IN ACCORDANCE WITH THE
PROVISIONS OF THE AGREEMENT  REFERRED TO HEREIN.  SUCH  REPRESENTATION  SHALL BE
DEEMED TO HAVE BEEN MADE TO THE  TRUSTEE  BY THE  TRANSFEREE'S  ACCEPTANCE  OF A
CERTIFICATE OF THIS CLASS AND BY A BENEFICIAL OWNER'S ACCEPTANCE OF ITS INTEREST
IN A CERTIFICATE  OF THIS CLASS.  NOTWITHSTANDING  ANYTHING ELSE TO THE CONTRARY
HEREIN,  ANY  PURPORTED  TRANSFER  OF THIS  CERTIFICATE  TO OR ON  BEHALF  OF AN
EMPLOYEE  BENEFIT  PLAN  SUBJECT TO ERISA OR TO THE CODE  WITHOUT THE OPINION OF
COUNSEL  SATISFACTORY  TO THE TRUSTEE AS DESCRIBED ABOVE SHALL BE VOID AND OF NO
EFFECT.]

                                      B-1
<PAGE>

Certificate No.                    :
Cut-off Date                       :
First Distribution Date            :
Initial Certificate Balance of
this Certificate ("Denominations") : $
Initial Certificate
Balances of all
Certificate of this
Class                              : $
CUSIP                              :

               First Horizon Mortgage Pass-Through Trust 2005-AR4
               Mortgage Pass-Through Certificates, Series 2005-AR4
                                   Class [___]

            evidencing a percentage  interest in the distributions  allocable to
            the  Certificates  of the  above-referenced  Class with respect to a
            Trust Fund consisting primarily of one or more pools of conventional
            mortgage loans (the "Mortgage Loans") secured by first liens on one-
            to four-family residential properties.

                First Horizon Asset Securities Inc., as Depositor

      Principal in respect of this Certificate is  distributable  monthly as set
forth herein. Accordingly,  the Certificate Balance at any time may be less than
the Certificate  Balance as set forth herein. This Certificate does not evidence
an obligation of, or an interest in, and is not guaranteed by the Depositor, the
Master  Servicer,  or the Trustee  referred to below or any of their  respective
affiliates.  Neither this  Certificate  nor the Mortgage Loans are guaranteed or
insured by any governmental agency or instrumentality.

      This certifies that  ___________ is the registered owner of the Percentage
Interest evidenced by this Certificate (obtained by dividing the denomination of
this  Certificate  by  the  aggregate  Initial   Certificate   Balances  of  the
denominations  of all  Certificates  of the  Class  to  which  this  Certificate
belongs)  in  certain  monthly  distributions  with  respect  to  a  Trust  Fund
consisting  primarily of the Mortgage  Loans  deposited by First  Horizon  Asset
Securities  Inc.  (the  "Depositor").  The Trust Fund was created  pursuant to a
Pooling and Servicing  Agreement  dated as of the Cut-off Date  specified  above
(the "Agreement") among the Depositor,  First Horizon Home Loan Corporation,  as
master  servicer (the "Master  Servicer"),  and The Bank of New York, as trustee
(the "Trustee").  To the extent not defined herein,  the capitalized  terms used
herein have the meanings  assigned in the Agreement.  This Certificate is issued
under and is subject to the terms,  provisions  and conditions of the Agreement,
to which  Agreement the Holder of this  Certificate  by virtue of the acceptance
hereof assents and by which such Holder is bound.

                                      B-2
<PAGE>

      [No  transfer  of a  Certificate  of this Class  shall be made unless such
transfer  is made  pursuant to an  effective  registration  statement  under the
Securities Act and any applicable  state  securities  laws or is exempt from the
registration  requirements  under  said Act and such  laws.  In the event that a
transfer is to be made in reliance upon an exemption from the Securities Act and
such laws, in order to assure  compliance with the Securities Act and such laws,
the   Certificateholder    desiring   to   effect   such   transfer   and   such
Certificateholder's  prospective transferee shall each certify to the Trustee in
writing the facts surrounding the transfer. In the event that such a transfer is
to be  made  within  two  years  from  the  date  of  the  initial  issuance  of
Certificates  pursuant hereto, there shall also be delivered (except in the case
of a transfer  pursuant  to Rule 144A of the  Securities  Act) to the Trustee an
Opinion of Counsel that such transfer may be made pursuant to an exemption  from
the  Securities  Act and such state  securities  laws,  which Opinion of Counsel
shall not be  obtained  at the expense of the  Trustee,  the Seller,  the Master
Servicer or the  Depositor.  The Holder hereof  desiring to effect such transfer
shall, and does hereby agree to, indemnify the Trustee and the Depositor against
any liability that may result if the transfer is not so exempt or is not made in
accordance with such federal and state laws.]

      [No  transfer  of a  Certificate  of this Class  shall be made  unless the
Trustee  shall have  received  either  (i) a  representation  [letter]  from the
transferee  of  such  Certificate,  acceptable  to and  in  form  and  substance
satisfactory  to the  Trustee,  to the  effect  that such  transferee  is not an
employee benefit plan or arrangement  subject to Section 406 of ERISA or Section
4975 of the  Code,  nor a  person  acting  on  behalf  of any such  plan,  which
representation  letter shall not be an expense of the Trustee,  the Depositor or
the Master  Servicer,  (ii) if the  purchaser  is an  insurance  company and the
certificate   has  been   subject  to  an   ERISA-Qualifying   Underwriting,   a
representation  that the  purchaser is an insurance  company which is purchasing
such Certificates with funds contained in an "insurance company general account"
(as such  term is  defined  in  Section  V(e) of  Prohibited  Transaction  Class
Exemption  95-60  ("PTCE  95-60"))  and that the  purchase  and  holding of such
Certificates  are covered under Sections I and III of PTCE 95-60 or (iii) in the
case of any  such  Certificate  presented  for  registration  in the  name of an
employee  benefit  plan  subject  to  ERISA  or  Section  4975 of the  Code  (or
comparable  provisions of any subsequent  enactments),  or a trustee of any such
plan or any  other  person  acting on behalf of any such  plan,  an  Opinion  of
Counsel  satisfactory  to the Trustee to the effect that the purchase or holding
of such Certificate will not result in prohibited transactions under Section 406
of ERISA and  Section  4975 of the Code and will not subject  the  Trustee,  the
Depositor  or the  Master  Servicer  to any  obligation  in  addition  to  those
undertaken in the Agreement, which Opinion of Counsel shall not be an expense of
the Trustee, the Depositor or the Master Servicer. [Such representation shall be
deemed to have been made to the  Trustee  by the  Transferee's  acceptance  of a
Certificate of this Class and by a beneficial owner's acceptance of its interest
in a Certificate of this Class.]  Notwithstanding  anything else to the contrary
herein, any purported transfer of a Certificate of this Class to or on behalf of
an employee  benefit plan subject to ERISA or to the Code without the opinion of
counsel  satisfactory  to the Trustee as described above shall be void and of no
effect.]Reference  is hereby made to the further  provisions of this Certificate
set forth on the reverse hereof, which further provisions shall for all purposes
have the same effect as if set forth at this place.

      Reference is hereby made to the further provisions of this Certificate set
forth on the reverse  hereof,  which further  provisions  shall for all purposes
have the same effect as if set forth at this place.

      This Certificate  shall not be entitled to any benefit under the Agreement
or be valid for any  purpose  unless  manually  countersigned  by an  authorized
signatory of the Trustee.

                                      B-3
<PAGE>

      IN WITNESS  WHEREOF,  the Trustee has caused this  Certificate  to be duly
executed.

Dated:  August __, 2005

                                            THE BANK OF NEW YORK,
                                            not in its individual capacity,
                                            but solely as Trustee

                                            By:  _______________________________
                                                 Authorized Signatory of
                                                 THE BANK OF NEW YORK
                                                 not in its individual capacity,
                                                 but solely as Trustee

Countersigned:

By ___________________________
   Authorized Signatory of
   THE BANK OF NEW YORK,
   not in its individual capacity,
   but solely as Trustee

                                      B-4
<PAGE>

                                    EXHIBIT C

                         [FORM OF RESIDUAL CERTIFICATE]

SOLELY FOR U.S.  FEDERAL  INCOME TAX PURPOSES,  THIS  CERTIFICATE IS A "RESIDUAL
INTEREST" IN A "REAL  ESTATE  MORTGAGE  INVESTMENT  CONDUIT," AS THOSE TERMS ARE
DEFINED, RESPECTIVELY, IN SECTIONS 860G AND 860D OF THE INTERNAL REVENUE CODE OF
1986, AS AMENDED (THE "CODE").

NEITHER THIS  CERTIFICATE NOR ANY INTEREST HEREIN MAY BE TRANSFERRED  UNLESS THE
PROPOSED  TRANSFEREE  DELIVERS TO THE TRUSTEE A TRANSFER AFFIDAVIT IN ACCORDANCE
WITH THE PROVISIONS OF THE AGREEMENT REFERRED TO HEREIN.

[THIS CERTIFICATE  REPRESENTS THE "TAX MATTERS PERSON RESIDUAL  INTEREST" ISSUED
UNDER THE  POOLING  AND  SERVICING  AGREEMENT  REFERRED  TO BELOW AND MAY NOT BE
TRANSFERRED  TO ANY  PERSON  EXCEPT IN  CONNECTION  WITH THE  ASSUMPTION  BY THE
TRANSFEREE OF THE DUTIES OF THE SERVICER UNDER SUCH AGREEMENT.]

NEITHER THIS  CERTIFICATE NOR ANY INTEREST HEREIN MAY BE TRANSFERRED  UNLESS THE
TRANSFEREE  REPRESENTS  TO THE TRUSTEE THAT SUCH  TRANSFEREE  IS NOT AN EMPLOYEE
BENEFIT PLAN OR ARRANGEMENT  SUBJECT TO THE EMPLOYEE  RETIREMENT INCOME SECURITY
ACT OF 1974, AS AMENDED ("ERISA"),  OR A PLAN OR ARRANGEMENT  SUBJECT TO SECTION
4975  OF  THE  CODE,  OR,  IF  SUCH  PURCHASER  IS  AN  INSURANCE   COMPANY,   A
REPRESENTATION  IN ACCORDANCE  WITH THE PROVISIONS OF THE AGREEMENT  REFERRED TO
HEREIN,  OR DELIVERS TO THE TRUSTEE AN OPINION OF COUNSEL IN ACCORDANCE WITH THE
PROVISIONS OF THE AGREEMENT REFERRED TO HEREIN.  [SUCH  REPRESENTATION  SHALL BE
DEEMED TO HAVE BEEN MADE TO THE  TRUSTEE  BY THE  TRANSFEREE'S  ACCEPTANCE  OF A
CERTIFICATE OF THIS CLASS AND BY A BENEFICIAL OWNER'S ACCEPTANCE OF ITS INTEREST
IN A CERTIFICATE OF THIS CLASS.]  NOTWITHSTANDING  ANYTHING ELSE TO THE CONTRARY
HEREIN,  ANY  PURPORTED  TRANSFER  OF THIS  CERTIFICATE  TO OR ON  BEHALF  OF AN
EMPLOYEE  BENEFIT  PLAN  SUBJECT TO ERISA OR TO THE CODE  WITHOUT THE OPINION OF
COUNSEL  SATISFACTORY  TO THE TRUSTEE AS DESCRIBED ABOVE SHALL BE VOID AND OF NO
EFFECT.

                                      C-1
<PAGE>

Certificate No.                    :
Cut-off Date                       :
First Distribution Date            :
Initial Certificate Balance of
this Certificate ("Denominations") : $
Initial Certificate
Balances of all
Certificate of this
Class                              : $
CUSIP                              :

               First Horizon Mortgage Pass-Through Trust 2005-AR4
               Mortgage Pass-Through Certificates, Series 2005-AR4

            evidencing a percentage  interest in the distributions  allocable to
            the  Certificates  of the  above-referenced  Class with respect to a
            Trust Fund consisting primarily of one or more pools of conventional
            mortgage loans (the "Mortgage Loans") secured by first liens on one-
            to four-family residential properties.

                First Horizon Asset Securities Inc., as Depositor

      Principal in respect of this Certificate is  distributable  monthly as set
forth herein. Accordingly,  the Certificate Balance at any time may be less than
the Certificate  Balance as set forth herein. This Certificate does not evidence
an obligation of, or an interest in, and is not guaranteed by the Depositor, the
Master  Servicer  or the Trustee  referred  to below or any of their  respective
affiliates.  Neither this  Certificate  nor the Mortgage Loans are guaranteed or
insured by any governmental agency or instrumentality.

      This  certifies  that  _________________  is the  registered  owner of the
Percentage  Interest  (obtained by dividing the denomination of this Certificate
by the  aggregate  Initial  Certificate  Balances  of the  denominations  of all
Certificates of the Class to which this Certificate  belongs) in certain monthly
distributions  with respect to a Trust Fund  consisting  of the  Mortgage  Loans
deposited by First Horizon Asset  Securities Inc. (the  "Depositor").  The Trust
Fund was created  pursuant to a Pooling and Servicing  Agreement dated as of the
Cut-off  Date  specified  above (the  "Agreement")  among the  Depositor,  First
Horizon Home Loan Corporation,  as master servicer (the "Master Servicer"),  and
The Bank of New York,  as trustee  (the  "Trustee").  To the extent not  defined
herein,  the  capitalized  terms used herein have the  meanings  assigned in the
Agreement.  This  Certificate  is issued  under  and is  subject  to the  terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

      Any distribution of the proceeds of any remaining assets of the Trust Fund
will  be  made  only  upon  presentment  and  surrender  of  this  Class  II-A-R
Certificate at the Corporate Trust Office or the office or agency  maintained by
the Trustee in New York, New York. This Class II-A-R  Certificate  represents an
ownership in the RL Interest and RU Interest, as defined in the Agreement.

                                      C-27
<PAGE>

      No transfer of a Class II-A-R Certificate shall be made unless the Trustee
shall have received either (i) a representation  [letter] from the transferee of
such  Certificate,  acceptable to and in form and substance  satisfactory to the
Trustee,  to the effect that such transferee is not an employee  benefit plan or
arrangement  subject to Section 406 of ERISA or Section 4975 of the Code,  nor a
person acting on behalf of any such plan, which representation  letter shall not
be an expense of the Trustee, the Depositor or the Master Servicer,  (ii) if the
purchaser is an insurance  company,  a  representation  that the purchaser is an
insurance  company which is purchasing such  Certificate with funds contained in
an "insurance  company general account" (as such term is defined in Section V(e)
of Prohibited  Transaction  Class  Exemption  95-60 ("PTCE 95-60")) and that the
purchase and holding of such Certificate are covered under Sections I and III of
PTCE  95-60  or  (iii)  in  the  case  of any  such  Certificate  presented  for
registration in the name of an employee benefit plan subject to ERISA or Section
4975 of the Code (or comparable provisions of any subsequent  enactments),  or a
trustee of any such plan or any other person  acting on behalf of any such plan,
an Opinion  of  Counsel  satisfactory  to the  Trustee  to the  effect  that the
purchase  or  holding  of such  Class  II-A-R  Certificate  will not  result  in
prohibited  transactions under Section 406 of ERISA and Section 4975 of the Code
and will not subject the Trustee,  the Depositor and the Master  Servicer to any
obligation in addition to those  undertaken in the  Agreement,  which Opinion of
Counsel  shall not be an expense of the  Trustee,  the  Depositor  or the Master
Servicer.  [Such representation shall be deemed to have been made to the Trustee
by the  Transferee's  acceptance  of  this  Class  II-A-R  Certificate  and by a
beneficial   owner's   acceptance   of  its   interest  in  such   Certificate.]
Notwithstanding  anything else to the contrary herein, any purported transfer of
a Class II-A-R  Certificate to or on behalf of an employee  benefit plan subject
to ERISA or to the Code  without  the  opinion  of counsel  satisfactory  to the
Trustee as described above shall be void and of no effect.

      Each Holder of this Class II-A-R Certificate will be deemed to have agreed
to be bound by the  restrictions of the Agreement,  including but not limited to
the  restrictions  that (i) each  person  holding  or  acquiring  any  Ownership
Interest in this Class II-A-R Certificate must be a Permitted  Transferee,  (ii)
no  Ownership  Interest  in this Class  II-A-R  Certificate  may be  transferred
without  delivery to the  Trustee of (a) a transfer  affidavit  of the  proposed
transferee  and  (b) a  transfer  certificate  of the  transferor,  each of such
documents  to be in the form  described  in the  Agreement,  (iii)  each  person
holding or acquiring  any  Ownership  Interest in this Class II-A-R  Certificate
must agree to require a transfer affidavit and to deliver a transfer certificate
to the Trustee as required  pursuant to the Agreement,  (iv) each person holding
or acquiring an Ownership  Interest in this Class II-A-R  Certificate must agree
not to transfer an Ownership Interest in this Class II-A-R Certificate if it has
actual knowledge that the proposed transferee is not a Permitted  Transferee and
(v) any attempted or purported  transfer of any Ownership Interest in this Class
II-A-R Certificate in violation of such restrictions will be absolutely null and
void and will vest no rights in the purported transferee.

      Reference is hereby made to the further provisions of this Certificate set
forth on the reverse  hereof,  which further  provisions  shall for all purposes
have the same effect as if set forth at this place.

      This Certificate  shall not be entitled to any benefit under the Agreement
or be valid for any  purpose  unless  manually  countersigned  by an  authorized
signatory of the Trustee.

                                      C-3
<PAGE>

         IN WITNESS WHEREOF, the Trustee has caused this Certificate to be duly
executed.

Dated:  August __, 2005

                                        THE BANK OF NEW YORK,
                                        not in its individual capacity,
                                        but solely as Trustee

                                        By: _______________________________
                                            Authorized Signatory of
                                            THE BANK OF NEW YORK
                                            not in its individual capacity,
                                            but solely as Trustee

Countersigned:

By ___________________________
   Authorized Signatory of
   THE BANK OF NEW YORK,
   not in its individual capacity,
   but solely as Trustee

                                      C-4
<PAGE>

                                    EXHIBIT D

                        [Form of Reverse of Certificates]

               First Horizon Mortgage Pass-Through Trust 2005-AR4
                       Mortgage Pass-Through Certificates

      This  Certificate  is one  of a  duly  authorized  issue  of  Certificates
designated  as First  Horizon  Mortgage  Pass-Through  Trust  2005-AR4  Mortgage
Pass-Through  Certificates,  of the Series  specified on the face hereof (herein
collectively called the "Certificates"), and representing a beneficial ownership
interest in the Trust Fund created by the Agreement.

      The Certificateholder,  by its acceptance of this Certificate, agrees that
it will look  solely to the funds on deposit  in the  Distribution  Account  for
payment  hereunder and that the Trustee is not liable to the  Certificateholders
for any amount  payable  under this  Certificate  or the Agreement or, except as
expressly  provided  in the  Agreement,  subject  to  any  liability  under  the
Agreement.

      This Certificate does not purport to summarize the Agreement and reference
is made to the Agreement for the  interests,  rights and  limitations of rights,
benefits,  obligations and duties evidenced thereby, and the rights,  duties and
immunities of the Trustee.

      Pursuant to the terms of the Agreement, a distribution will be made on the
25th day of each month or, if such 25th day is not a Business  Day, the Business
Day immediately  following (the  "Distribution  Date"),  commencing on the first
Distribution Date specified on the face hereof, to the Person in whose name this
Certificate is registered at the close of business on the applicable Record Date
in an amount equal to the product of the Percentage  Interest  evidenced by this
Certificate and the amount required to be distributed to Holders of Certificates
of the  Class  to which  this  Certificate  belongs  on such  Distribution  Date
pursuant to the Agreement.  The Record Date applicable to each Distribution Date
is the  last  Business  Day of the  month  next  preceding  the  month  of  such
Distribution Date.

      Distributions  on this  Certificate  shall  be made  by wire  transfer  of
immediately  available  funds to the  account of the Holder  hereof at a bank or
other entity having appropriate  facilities therefor, if such  Certificateholder
shall have so notified the Trustee in writing at least five  Business Days prior
to the  related  Record  Date  and  such  Certificateholder  shall  satisfy  the
conditions  to receive such form of payment set forth in the  Agreement,  or, if
not,   by  check   mailed  by  first   class   mail  to  the   address  of  such
Certificateholder  appearing in the Certificate Register. The final distribution
on each Certificate  will be made in like manner,  but only upon presentment and
surrender  of such  Certificate  at the  Corporate  Trust  Office or such  other
location   specified  in  the  notice  to   Certificateholders   of  such  final
distribution.

      The Agreement  permits,  with certain  exceptions  therein  provided,  the
amendment  thereof and the  modification  of the rights and  obligations  of the
Trustee and the rights of the Certificateholders under the Agreement at any time
by the  Depositor,  the Master  Servicer and the Trustee with the consent of the
Holders of  Certificates  affected by such  amendment  evidencing  the requisite
Percentage  Interest,  as provided  in the  Agreement.  Any such  consent by the
Holder of this  Certificate  shall be conclusive  and binding on such Holder and
upon all future Holders of this  Certificate and of any Certificate  issued upon
the  transfer  hereof or in exchange  therefor or in lieu hereof  whether or not
notation  of such  consent is made upon this  Certificate.  The  Agreement  also
permits the amendment  thereof,  in certain limited  circumstances,  without the
consent of the Holders of any of the Certificates.

                                      D-1
<PAGE>

      As provided in the  Agreement and subject to certain  limitations  therein
set forth,  the transfer of this  Certificate is registrable in the  Certificate
Register of the Trustee upon surrender of this  Certificate for  registration of
transfer at the Corporate Trust Office or the office or agency maintained by the
Trustee in New York, New York,  accompanied by a written  instrument of transfer
in form satisfactory to the Trustee and the Certificate  Registrar duly executed
by the holder hereof or such holder's  attorney duly authorized in writing,  and
thereupon  one  or  more  new  Certificates  of the  same  Class  in  authorized
denominations and evidencing the same aggregate Percentage Interest in the Trust
Fund will be issued to the designated transferee or transferees.

      The  Certificates  are issuable  only as registered  Certificates  without
coupons  in  denominations  specified  in  the  Agreement.  As  provided  in the
Agreement and subject to certain limitations therein set forth, Certificates are
exchangeable for new Certificates of the same Class in authorized  denominations
and  evidencing  the same  aggregate  Percentage  Interest,  as requested by the
Holder surrendering the same.

      No service  charge will be made for any such  registration  of transfer or
exchange,  but the Trustee may require  payment of a sum sufficient to cover any
tax or other governmental charge payable in connection therewith.

      The  Depositor,  the Master  Servicer and the Trustee and any agent of the
Depositor or the Trustee may treat the Person in whose name this  Certificate is
registered as the owner hereof for all purposes, and neither the Depositor,  the
Trustee, nor any such agent shall be affected by any notice to the contrary.

      On any  Distribution  Date on which the  aggregate  of the Pool  Principal
Balances of all of Mortgage Pools is less than 10% of the aggregate Cut-off Date
Pool Principal  Balance of all of the Mortgage  Pools,  the Master Servicer will
have the  option to  repurchase,  in whole,  from the Trust  Fund all  remaining
Mortgage Loans and all property acquired in respect of the Mortgage Loans in the
Mortgage Pools at a purchase price  determined as provided in the Agreement.  In
the  event  that  no such  optional  termination  occurs,  the  obligations  and
responsibilities  created by the Agreement  will terminate upon the later of the
maturity or other  liquidation (or any advance with respect thereto) of the last
Mortgage Loan remaining in the Trust Fund or the  disposition of all property in
respect  thereof  and the  distribution  to  Certificateholders  of all  amounts
required to be distributed pursuant to the Agreement. In no event, however, will
the trust created by the Agreement  continue  beyond the  expiration of 21 years
from the death of the last survivor of the descendants living at the date of the
Agreement of a certain person named in the Agreement.

      Any term used  herein  that is  defined  in the  Agreement  shall have the
meaning  assigned  in  the  Agreement,   and  nothing  herein  shall  be  deemed
inconsistent with that meaning.

                                      D-2
<PAGE>

      ASSIGNMENT

      FOR  VALUE  RECEIVED,  the  undersigned  hereby  sell(s),   assign(s)  and
transfer(s) unto

                         ------------------------------
                        (Please insert social security or
                      other identifying number of assignee)

    ------------------------------------------------------------------------

    ------------------------------------------------------------------------
                   (Please print or typewrite name and address
                     including postal zip code of assignee)

    ------------------------------------------------------------------------
         the Percentage Interest evidenced by the within Certificate and
             hereby authorizes the transfer of registration of such
         Percentage Interest to assignee on the Certificate Register of
                                 the Trust Fund.

      I (We)  further  direct the Trustee to issue a new  Certificate  of a like
denomination and Class, to the above named assignee and deliver such Certificate
to the following address:

    ------------------------------------------------------------------------

    ------------------------------------------------------------------------

    ------------------------------------------------------------------------

Dated: __________

                                         --------------------------------------
                                         Signature by or on behalf of assignor

                            DISTRIBUTION INSTRUCTIONS

         The assignee should include the following for purposes of distribution:

      Distributions shall be made, by wire transfer or otherwise, in immediately
available  funds to  ______________________________________,  for the account of
_____________________,  account number  ___________,  or, if mailed by check, to
___________________________.   Applicable   statements   should   be  mailed  to
___________________________.

      This information is provided by  ________________________________________,
the assignee named above, or _________________, as its agent.

                                      D-3
<PAGE>

                                    EXHIBIT E

                   FORM OF INITIAL CERTIFICATION OF CUSTODIAN

                                     [date]

First Horizon Asset Securities Inc.
First Horizon Home Loan Corporation
4000 Horizon Way
Irving, Texas  75063

The Bank of New York_______
101 Barclay Street, 8W_____
New York, New York  10286

         Re:      Custodial  Agreement  dated as of August 30, 2005 by and among
                  the Bank of New York,  as  Trustee,  First  Horizon  Home Loan
                  Corporation,  as Servicer and First  Tennessee  Bank  National
                  Association, as Custodian

Gentlemen:

      In accordance with Section 2 of the  above-captioned  Custodial  Agreement
(the "Custodial  Agreement"),  the undersigned,  as Custodian,  hereby certifies
that, as to each Mortgage Loan listed in the Mortgage Loan Schedule  (other than
any Mortgage Loan listed in the attached schedule), it has received:

      (i) the  original  Mortgage  Note,  endorsed as provided in the  following
form: "Pay to the order of ________, without recourse"; and

      (ii) a duly executed assignment, or a copy of such assignment certified by
the Seller as being a true and complete copy of the assignment,  of the Mortgage
(which  may be  included  in a blanket  assignment  or  assignments);  provided,
however,  that it has  received no  assignment  with respect to any Mortgage for
which the related  Mortgaged  Property is located in the  Commonwealth of Puerto
Rico.

      Based  on  its  review  and  examination  and  only  as to  the  foregoing
documents,  such  documents  appear  regular on their  face and  related to such
Mortgage Loan.

      The  Custodian  has  made  no  independent  examination  of any  documents
contained in each Mortgage File beyond the review  specifically  required in the
Custodial  Agreement.  The  Custodian  makes no  representations  as to: (i) the
validity,  legality,  sufficiency,  enforceability  or genuineness of any of the
documents  contained  in  each  Mortgage  File  of  any of  the  Mortgage  Loans
identified  on  the  Mortgage  Loan  Schedule,   or  (ii)  the   collectability,
insurability, effectiveness or suitability of any such Mortgage Loan.

                                      E-1
<PAGE>

      Capitalized  words and  phrases  used  herein  shall  have the  respective
meanings assigned to them in the Custodial Agreement.

                                                 FIRST TENNESSEE BANK NATIONAL
                                                 ASSOCIATION,
                                                 as Custodian

                                                 By:   ________________________
                                                 Name: ________________________
                                                 Title:________________________

                                      E-2
<PAGE>

                                    EXHIBIT F

                      FORM OF DELAY DELIVERY CERTIFICATION

                                     [date]

First Horizon Asset Securities Inc.
First Horizon Home Loan Corporation
4000 Horizon Way
Irving, Texas  75063

The Bank of New York_______
101 Barclay Street, 8W_____
New York, New York  10286

         Re:      Custodial  Agreement  dated as of August 30, 2005 by and among
                  the Bank of New York,  as  Trustee,  First  Horizon  Home Loan
                  Corporation,  as Servicer,  and First  Tennessee Bank National
                  Association, as Custodian

Ladies and Gentlemen:

      In accordance with Section 3 of the  above-captioned  Custodial  Agreement
(the "Custodial  Agreement"),  the undersigned,  as Custodian,  hereby certifies
that,  as to each Delay  Delivery  Mortgage  Loan  listed in the  Mortgage  Loan
Schedule  (other than any Delay  Delivery  Mortgage  Loan listed in the attached
schedule), it has received:

      (i) the  original  Mortgage  Note,  endorsed as provided in the  following
form: "Pay to the order of_______, without recourse";

      (ii) in the case of each 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  Mortgage  Loan  that is a MERS
Mortgage Loan, the original  Mortgage,  or a copy of such Mortgage  certified by
the Seller as being a true and complete copy of the Mortgage, noting thereon the
presence  of the MIN of the  Mortgage  Loan  and  language  indicating  that the
Mortgage Loan is a MOM Loan if the Mortgage Loan is a MOM Loan, with evidence of
recording indicated thereon]; and

      (iii) in the case of each Mortgage Loan, a duly executed assignment,  or a
copy of such  assignment  certified by the Seller as a true and complete copy of
the assignment,  of the Mortgage (which may be included in a blanket  assignment
or  assignments);  provided,  however,  that it has received no assignment  with
respect to any  Mortgage for which the related  Mortgage  Property is located in
the Commonwealth of Puerto Rico.

      Based  on  its  review  and  examination  and  only  as to  the  foregoing
documents, such documents appear regular on their face and related to such Delay
Delivery Mortgage Loan.

      The  Custodian  has  made  no  independent  examination  of any  documents
contained in each Mortgage File beyond the review  specifically  required in the
Custodial  Agreement.  The  Custodian  makes no  representations  as to: (i) the
validity,  legality,  sufficiency,  enforceability  or genuineness of any of the
documents  contained in each Mortgage File of any of the Delay Delivery Mortgage
Loans  identified on the Mortgage  Loan  Schedule,  or (ii) the  collectability,
insurability,  effectiveness or suitability of any such Delay Delivery  Mortgage
Loan.

                                      F-1
<PAGE>

      Capitalized  words and  phrases  used  herein  shall  have the  respective
meanings assigned to them in the above-captioned Custodial Agreement.

                                             FIRST TENNESSEE BANK NATIONAL
                                             ASSOCIATION,
                                             as Custodian

                                             By:   ________________________
                                             Name: ________________________
                                             Title:________________________

                                      F-2
<PAGE>

                                    EXHIBIT G

                  FORM OF SUBSEQUENT CERTIFICATION OF CUSTODIAN

                                     [date]

First Horizon Asset Securities Inc.
First Horizon Home Loan Corporation
4000 Horizon Way
Irving, Texas  75063

The Bank of New York
101 Barclay Street, 8W
New York, New York  10286

         Re:      Custodial  Agreement  dated as of August 30, 2005 by and among
                  the Bank of New York,  as  Trustee,  First  Horizon  Home Loan
                  Corporation,  as Servicer,  and First  Tennessee Bank National
                  Association, as Custodian

Ladies and Gentlemen:

      In accordance with Section 3 of the  above-captioned  Custodial  Agreement
(the "Custodial Agreement"), the undersigned, as Custodian hereby certifies that
as to each Mortgage  Loan listed in the Mortgage  Loan Schedule  (other than any
Mortgage  Loan paid in full or listed on the attached  exception  report) it has
received, unless otherwise provided in Section 2 of the Custodial Agreement:

      (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 endorsements  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 in Section 2(c) of the Custodial  Agreement,  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 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;

                                       G-1
<PAGE>

      (iii) in the case of each 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 in Section 2(c) of the Custodial Agreement,
            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:

            (a)   The Coop Shares, together with a stock power in blank;

            (b)   The executed Security Agreement;

            (c)   The executed Proprietary Lease;

            (d)   The  executed  UCC-1  financing  statement  with  evidence  of
                  recording thereon which have been filed in all places required
                  to perfect  the  Seller's  interest in the Coop Shares and the
                  Proprietary Lease; and

            (e)   Executed UCC-3 financing  statements or their  appropriate UCC
                  financing  statements  required  by state  law,  evidencing  a
                  complete and unbroken  line from the  mortgagee to the Trustee
                  with evidence of recording  thereon (or in a form suitable for
                  recordation).

      Based  on  its  review  and  examination  and  only  as to  the  foregoing
documents,  (a) such documents  appear regular on their face and related to such
Mortgage Loan,  and (b) the  information  set forth in items (i),  (ii),  (iii),
(iv), (vi) and (xi) of the definition of the "Mortgage Loan Schedule" in Article
I of the Pooling and Servicing  Agreement  accurately  reflects  information set
forth in the Mortgage File.

                                       G-2
<PAGE>

      The  Custodian  has  made  no  independent  examination  of any  documents
contained in each Mortgage File beyond the review  specifically  required in the
Custodial  Agreement.  The  Custodian  makes no  representations  as to: (i) the
validity,  legality,  sufficiency,  enforceability  or genuineness of any of the
documents  contained  in  each  Mortgage  File  of  any of  the  Mortgage  Loans
identified  on  the  Mortgage  Loan  Schedule,   or  (ii)  the   collectability,
insurability,   effectiveness   or   suitability  of  any  such  Mortgage  Loan.
Notwithstanding  anything  herein to the  contrary,  the  Custodian  has made no
determination and makes no  representations 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 sufficient to effect the  assignment of and
transfer to the assignee  thereof,  under the  Mortgage to which the  assignment
relates.

      Capitalized  words and  phrases  used  herein  shall  have the  respective
meanings assigned to them in the Custodial Agreement.

                                               FIRST TENNESSEE BANK NATIONAL
                                               ASSOCIATION, as Custodian

                                               By:    _______________________
                                               Name:  _______________________
                                               Title: _______________________

                                      G-3
<PAGE>

                                    EXHIBIT H

                               TRANSFER AFFIDAVIT

               First Horizon Mortgage Pass-Through Trust 2005-AR4
                       Mortgage Pass-Through Certificates
                                 Series 2005-AR4

STATE OF          _________     )
                  _________     ) ss.:
COUNTY OF         _________     )

      The undersigned, being first duly sworn, deposes and says as follows:

      1. The undersigned is an officer of __________, the proposed Transferee of
an Ownership Interest in a Class II-A-R Certificate (the  "Certificate")  issued
pursuant to the Pooling and Servicing Agreement, (the "Agreement"),  relating to
the  above-referenced  Series, by and among First Horizon Asset Securities Inc.,
as depositor (the "Depositor"),  First Horizon Home Loan Corporation,  as master
servicer, and The Bank of New York, as trustee.  Capitalized terms used, but not
defined herein or in Exhibit 1 hereto,  shall have the meanings ascribed to such
terms in the Agreement.  The  Transferee has authorized the  undersigned to make
this affidavit on behalf of the Transferee.

      2. The Transferee  is, as of the date hereof,  and will be, as of the date
of the  Transfer,  a Permitted  Transferee.  The  Transferee  is  acquiring  its
Ownership  Interest in the Certificate either (i) for its own account or (ii) as
nominee,  trustee  or agent  for  another  Person  and has  attached  hereto  an
affidavit from such Person in substantially the same form as this affidavit. The
Transferee has no knowledge that any such affidavit is false.

      3. The Transferee has been advised of, and understands  that (i) a tax may
be imposed on Transfers  of the  Certificate  to Persons that are not  Permitted
Transferees;  (ii)  such tax will be  imposed  on the  transferor,  or,  if such
Transfer is through an agent (which includes a broker, nominee or middleman) for
a Person that is not a Permitted Transferee,  on the agent; and (iii) the Person
otherwise  liable for the tax shall be relieved of liability  for the tax if the
subsequent transferee furnished to such Person an affidavit that such subsequent
transferee is a Permitted  Transferee and, at the time of Transfer,  such Person
does not have actual knowledge that the affidavit is false.

      4. The Transferee has been advised of, and  understands  that a tax may be
imposed on a "pass-through entity" holding the Certificate if at any time during
the  taxable  year of the  pass-through  entity a Person that is not a Permitted
Transferee  is the record holder of an interest in such entity.  The  Transferee
understands  that such tax will not be imposed  for any period  with  respect to
which the record holder furnishes to the  pass-through  entity an affidavit that
such record holder is a Permitted  Transferee and the  pass-through  entity does
not have actual  knowledge  that such affidavit is false.  (For this purpose,  a
"pass-through  entity" includes a regulated  investment  company,  a real estate
investment  trust or common  trust fund,  a  partnership,  trust or estate,  and
certain  cooperatives  and,  except as may be provided in Treasury  Regulations,
persons  holding  interests  in  pass-through  entities as a nominee for another
Person.)

                                       H-1
<PAGE>

      5. The  Transferee  has reviewed the  provisions of Section  5.2(c) of the
Agreement  (attached hereto as Exhibit 2 and  incorporated  herein by reference)
and  understands  the legal  consequences  of the  acquisition  of an  Ownership
Interest in the Certificate including,  without limitation,  the restrictions on
subsequent  Transfers  and the  provisions  regarding  voiding the  Transfer and
mandatory sales. The Transferee  expressly agrees to be bound by and to abide by
the provisions of Section 5.2(c) of the Agreement and the restrictions  noted on
the face of the  Certificate.  The  Transferee  understands  and agrees that any
breach of any of the  representations  included herein shall render the Transfer
to the Transferee contemplated hereby null and void.

      6. The Transferee  agrees to require a Transfer  Affidavit from any Person
to whom the  Transferee  attempts  to  Transfer  its  Ownership  Interest in the
Certificate,  and in  connection  with any  Transfer  by a  Person  for whom the
Transferee is acting as nominee,  trustee or agent,  and the Transferee will not
Transfer  its  Ownership   Interest  or  cause  any  Ownership  Interest  to  be
Transferred  to  any  Person  that  the  Transferee  knows  is  not a  Permitted
Transferee.  In  connection  with  any  such  Transfer  by the  Transferee,  the
Transferee  agrees to deliver to the Trustee a certificate  substantially in the
form set forth as Exhibit I to the Agreement (a "Transferor Certificate") to the
effect that such Transferee has no actual knowledge that the Person to which the
Transfer is to be made is not a Permitted Transferee.

      7. The Transferee  does not have the intention to impede the assessment or
collection  of  any  tax  legally  required  to be  paid  with  respect  to  the
Certificate.

      8. The Transferee's taxpayer identification number is ______.

      9. The  Transferee  is either a U.S.  Person as  defined  in Code  Section
7701(a)(30) or the Transferee has furnished the Transferor a properly  completed
Internal Revenue Service Form W-8ECI.

      10. The  Transferee is aware that the  Certificate  may be a  "noneconomic
residual  interest"  within the  meaning  of  Treasury  regulations  promulgated
pursuant to the Code and that the transferor of a noneconomic  residual interest
will remain liable for any taxes due with respect to the income on such residual
interest,  unless no  significant  purpose  of the  transfer  was to impede  the
assessment or collection of tax.

      11. The Transferee is not an employee benefit plan or arrangement  subject
to Section 406 of ERISA or a plan or arrangement  subject to Section 4975 of the
Code, nor a person acting on behalf of any such plan or  arrangement,  nor using
the assets of any such plan or arrangement to effect such transfer.

      12. The  Transferee has  historically  paid its debts as they came due and
the  Transferee  will  continue to pay its debts as they come due in the future;
the  Transferee  understands  that,  as  the  holder  of  the  Certificate,  the
Transferee may incur tax  liabilities  in excess of any cash flows  generated by
the Certificate and the Transferee  intends to pay taxes associated with holding
the Certificate as they become due.

      13.  The  Transferee  is a  domestic  corporation  taxable  as  a  regular
corporation  for U.S.  federal  income  tax  purposes  (a  "taxable  domestic  C
corporation") and is not a real estate investment  trust,  regulated  investment
company or REMIC.  The Transferee  will not cause income from the Certificate to
be attributable,  for U.S. federal income tax purposes, to a non-U.S.  permanent
establishment  or fixed base  (within  the meaning of an  applicable  income tax
treaty) of the Transferee or another U.S. taxpayer. At the time of the Transfer,
and at the close of each of the Transferee's two fiscal years preceding the year
of the Transfer,  the Transferee's gross assets for financial reporting purposes
exceeded $10 million (together,  the "Asset  Requirements"),  and the Transferee
hereby covenants that any subsequent  Transfer of its Ownership  Interest in the
Certificate  will be to another taxable,  domestic C corporation  satisfying the
Asset Requirements

                                      H-2
<PAGE>

      IN WITNESS  WHEREOF,  the  Transferee  has caused  this  instrument  to be
executed on its behalf,  pursuant to authority of its Board of Directors, by its
duly  authorized  officer and its corporate  seal to be hereunto  affixed,  duly
attested, this ___ day of _________, 20__.

                                                --------------------------------
                                                Print Name of Transferee

                                                By:_____________________________
                                                Name:___________________________
                                                Title:__________________________

      Personally appeared before me the above-named  ________________,  known or
proved to me to be the same person who executed the foregoing  instrument and to
be the  _________________  of the Transferee,  and acknowledged that he executed
the same as his free act and deed and the free act and deed of the Transferee.

      Subscribed and sworn before me this _____ day of ___________, 20____.

                                        ----------------------------------------
                                        NOTARY PUBLIC

                                        My Commission expires the ___ day of
                                        ________________, 20___.

                                      H-3
<PAGE>

                                                          EXHIBIT 1 to EXHIBIT H

                               Certain Definitions

      "Ownership  Interest":  As to any 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.

      "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  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  Certificate  to such Person may cause any REMIC
created pursuant to the Agreement to fail to qualify as a REMIC at any time that
the  Certificates  (as  defined in the  Agreement)  are  outstanding;  provided,
however, that if a person is classified as a partnership or a disregarded entity
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,   bank,  joint-stock  company,  trust  (including  any  beneficiary
thereof),  unincorporated  organization or government or any agency or political
subdivision thereof.

      "Transfer":  Any  direct or  indirect  transfer  or sale of any  Ownership
Interest in a  Certificate,  including the  acquisition  of a Certificate by the
Depositor.

      "Transferee":  Any Person  who is  acquiring  by  Transfer  any  Ownership
Interest in a Certificate.

                                      H-4
<PAGE>

                                                          EXHIBIT 2 to EXHIBIT H

                         Section 5.2(c) of the Agreement

      (c) Each  Person  who has or who  acquires  any  Ownership  Interest  in a
Residual  Certificate  shall be deemed by the  acceptance or acquisition of such
Ownership Interest to have agreed to be bound by the following  provisions,  and
the  rights of each  Person  acquiring  any  Ownership  Interest  in a  Residual
Certificate are expressly subject to the following provisions:

            (i) Each Person  holding or acquiring  any  Ownership  Interest in a
Residual  Certificate shall be a Permitted  Transferee and shall promptly notify
the  Trustee of any  change or  impending  change in its  status as a  Permitted
Transferee.

            (ii)  No  Ownership  Interest  in  a  Residual  Certificate  may  be
registered on the Closing Date or thereafter transferred,  and the Trustee shall
not register the Transfer of any Residual Certificate unless, in addition to the
certificates  required to be delivered  to the Trustee  under  subparagraph  (b)
above,  the Trustee  shall have been  furnished  with an  affidavit (a "Transfer
Affidavit") of the initial owner or the proposed transferee in the form attached
hereto as Exhibit H.

            (iii) Each Person  holding or acquiring any Ownership  Interest in a
Residual  Certificate  shall agree (A) to obtain a Transfer  Affidavit  from any
other Person to whom such Person attempts to Transfer its Ownership  Interest in
a Residual  Certificate,  (B) to obtain a Transfer Affidavit from any Person for
whom such Person is acting as nominee,  trustee or agent in connection  with any
Transfer  of a  Residual  Certificate  and (C)  not to  Transfer  its  Ownership
Interest in a Residual  Certificate  or to cause the  Transfer  of an  Ownership
Interest  in a  Residual  Certificate  to any  other  Person  if it  has  actual
knowledge that such Person is not a Permitted Transferee.

            (iv) Any attempted or purported  Transfer of any Ownership  Interest
in a Residual  Certificate in violation of the provisions of this Section 5.2(c)
shall be  absolutely  null and void and shall  vest no  rights in the  purported
Transferee.  If any  purported  transferee  shall  become a Holder of a Residual
Certificate in violation of the provisions of this Section 5.2(c), then the last
preceding Permitted Transferee shall be restored to all rights as Holder thereof
retroactive  to  the  date  of   registration   of  Transfer  of  such  Residual
Certificate.  The  Trustee  shall be under no  liability  to any  Person for any
registration of Transfer of a Residual Certificate that is in fact not permitted
by Section 5.2(b) and this Section 5.2(c) or for making any payments due on such
Certificate  to the Holder  thereof or taking any other  action with  respect to
such Holder under the  provisions of this  Agreement so long as the Transfer was
registered  after  receipt  of  the  related  Transfer   Affidavit,   Transferor
Certificate,  and in the case of a Residual  Certificate which is also a Private
Certificate,  either the Rule 144A Letter or the Investment  Letter. The Trustee
shall be entitled  but not  obligated  to recover  from any Holder of a Residual
Certificate that was in fact not a Permitted  Transferee at the time it became a
Holder  or,  at  such  subsequent  time  as it  became  other  than a  Permitted
Transferee,  all payments made on such Residual  Certificate at and after either
such time.  Any such  payments so  recovered  by the  Trustee  shall be paid and
delivered  by the Trustee to the last  preceding  Permitted  Transferee  of such
Certificate.

                                       H-5
<PAGE>

            (v) The Depositor shall use its best efforts to make available, upon
receipt of written  request  from the  Trustee,  all  information  necessary  to
compute  any tax  imposed  under  Section  860E(e)  of the Code as a result of a
Transfer of an Ownership Interest in a Residual Certificate to any Holder who is
not a Permitted Transferee.

      The restrictions on Transfers of a Residual  Certificate set forth in this
Section 5.2(c) shall cease to apply (and the  applicable  portions of the legend
on a Residual  Certificate  may be deleted) with respect to Transfers  occurring
after delivery to the Trustee of an Opinion of Counsel, which Opinion of Counsel
shall not be an expense of the Trust Fund,  the Trustee or the Master  Servicer,
to the effect that the elimination of such restrictions will not cause any REMIC
created  hereunder  to  fail  to  qualify  as a  REMIC  at  any  time  that  the
Certificates are outstanding or result in the imposition of any tax on the Trust
Fund, a  Certificateholder  or another Person.  Each Person holding or acquiring
any  Ownership  Interest  in a  Residual  Certificate  hereby  consents  to  any
amendment of this Agreement which,  based on an Opinion of Counsel  furnished to
the Trustee, is reasonably necessary (a) to ensure that the record ownership of,
or any  beneficial  interest  in, a  Residual  Certificate  is not  transferred,
directly or indirectly,  to a Person that is not a Permitted  Transferee and (b)
to provide for a means to compel the Transfer of a Residual Certificate which is
held by a  Person  that is not a  Permitted  Transferee  to a  Holder  that is a
Permitted Transferee.

                                      H-6
<PAGE>

                                    EXHIBIT I

                         FORM OF TRANSFEROR CERTIFICATE

                                                          _______________, 20___

First Horizon Asset Securities Inc.
First Horizon Home Loan Corporation
4000 Horizon Way
Irving, Texas  75063

The Bank of New York
101 Barclay Street, 8W
New York, New York  10286

         Re:      First Horizon Mortgage  Pass-Through  Trust 2005-AR4  Mortgage
                  Pass-Through Certificates, Series 2005-AR4, Class ___

Ladies and Gentlemen:

      In connection  with our  disposition of the above  Certificates we certify
that (a) to the extent we are disposing of a Private Certificate,  we understand
that the Private Certificate has not been registered under the Securities Act of
1933,  as amended (the "Act"),  and is being  disposed of by us in a transaction
that is exempt from the  registration  requirements  of the Act, (b) we have not
offered or sold any Certificates to, or solicited offers to buy any Certificates
from,  any person,  or otherwise  approached or negotiated  with any person with
respect  thereto,  in a manner that would be deemed,  or taken any other  action
which  would  result in, a  violation  of  Section 5 of the Act,  and (c) to the
extent we are  disposing of a Residual  Certificate,  we have no  knowledge  the
transferee is not a Permitted Transferee.

      Capitalized  terms used  herein  shall have the  meaning  ascribed to such
terms in the Pooling and Servicing Agreement, dated as of August 1, 2005, by and
among First Horizon Asset Securities Inc., as depositor, First Horizon Home Loan
Corporation,  as master servicer, and The Bank of New York, as trustee, pursuant
to which the Residual Certificates were issued.

                                                    Very truly yours,

                                                        ________________________
                                                        Print Name of Transferor

                                                    By: ________________________
                                                        Authorized Officer

                                      I-1
<PAGE>

                                    EXHIBIT J

                    FORM OF INVESTMENT LETTER (NON-RULE 144A)

                                                            _____________, 20___
First Horizon Asset Securities Inc.
4000 Horizon Way
Irving, Texas  75063

The Bank of New York
101 Barclay Street, 8W
New York, New York  10286
Attention:  Mortgage-Backed Securities Group

         Re:      First Horizon Mortgage  Pass-Through  Trust 2005-AR4  Mortgage
                  Pass-Through Certificates, Series 2005-AR4, Class ___

Ladies and Gentlemen:

      In connection  with our  acquisition of the above  Certificates we certify
that (a) we understand that the  Certificates are not being registered under the
Securities Act of 1933, as amended (the "Act"), or any state securities laws and
are  being  transferred  to  us  in  a  transaction  that  is  exempt  from  the
registration  requirements  of  the  Act  and  any  such  laws,  (b)  we  are an
"accredited  investor,"  as defined in Regulation D under the Act, and have such
knowledge and  experience in financial and business  matters that we are capable
of evaluating the merits and risks of investments  in the  Certificates,  (c) we
have had the  opportunity  to ask  questions  of and  receive  answers  from the
Depositor  concerning the purchase of the  Certificates and all matters relating
thereto or any  additional  information  deemed  necessary  to our  decision  to
purchase the Certificates, (d) either (i) we are not an employee benefit plan or
arrangement  that is subject to the Employee  Retirement  Income Security Act of
1974, as amended,  or a plan or  arrangement  that is subject to Section 4975 of
the Internal  Revenue Code of 1986,  as amended,  nor are we acting on behalf of
any such plan or  arrangement  nor are we using  the  assets of any such plan or
arrangement   to  effect   such   acquisition   or  (ii)  if,  in  the  case  of
ERISA-Restricted  Certificates that have been the subject of an ERISA-Qualifying
Underwriting,  we are an  insurance  company,  a  representation  that we are an
insurance  company which is purchasing such Certificates with funds contained in
an "insurance  company general account" (as such term is defined in Section V(e)
of Prohibited  Transaction  Class  Exemption  95-60 ("PTCE 95-60")) and that the
purchase and holding of such  Certificates  are covered under Sections I and III
of PTCE 95-60,  (e) we are acquiring the Certificates for investment for our own
account  and not  with a view to any  distribution  of  such  Certificates  (but
without  prejudice to our right at all times to sell or otherwise dispose of the
Certificates  in accordance  with clause (g) below),  (f) we have not offered or
sold any Certificates to, or solicited offers to buy any Certificates  from, any
person,  or  otherwise  approached  or  negotiated  with any person with respect
thereto,  or taken any other action which would result in a violation of Section
5 of the Act,  and (g) we will not sell,  transfer or  otherwise  dispose of any
Certificates  unless  (1)  such  sale,  transfer  or other  disposition  is made
pursuant to an effective  registration statement under the Act or is exempt from
such registration requirements, and if requested, we will at our expense provide
an opinion of counsel  satisfactory to the addressees of this  Certificate  that
such sale,  transfer or other  disposition  may be made pursuant to an exemption
from the Act, (2) the purchaser or transferee of such  Certificate  has executed
and  delivered to you a  certificate  to  substantially  the same effect as this
certificate, and (3) the purchaser or transferee has otherwise complied with any
conditions for transfer set forth in the Pooling and Servicing Agreement.

                                      J-1
<PAGE>

                                                   Very truly yours,

                                                    ____________________________
                                                    Print Name of Transferee

                                                    By: ________________________
                                                        Authorized Officer

                                      J-2
<PAGE>

                                    EXHIBIT K

                            FORM OF RULE 144A LETTER

                                                               ___________, 20__

First Horizon Asset Securities Inc.
4000 Horizon Way
Irving, Texas  75063

The Bank of New York
101 Barclay Street, 8W
New York, New York  10286
Attention:  Mortgage-Backed Securities Group

         Re:      First Horizon Mortgage  Pass-Through  Trust 2005-AR4  Mortgage
                  Pass-Through Certificates, Series 2005-AR4, Class ___

Ladies and Gentlemen:

      In connection  with our  acquisition of the above  Certificates we certify
that (a) we understand that the  Certificates are not being registered under the
Securities Act of 1933, as amended (the "Act"), or any state securities laws and
are  being  transferred  to  us  in  a  transaction  that  is  exempt  from  the
registration  requirements  of the Act  and  any  such  laws,  (b) we have  such
knowledge and  experience in financial and business  matters that we are capable
of evaluating the merits and risks of investments  in the  Certificates,  (c) we
have had the  opportunity  to ask  questions  of and  receive  answers  from the
Depositor  concerning the purchase of the  Certificates and all matters relating
thereto or any  additional  information  deemed  necessary  to our  decision  to
purchase  the  Certificates,  (d)  we  are  not  an  employee  benefit  plan  or
arrangement  that is subject to the Employee  Retirement  Income Security Act of
1974, as amended,  or a plan or  arrangement  that is subject to Section 4975 of
the Internal  Revenue Code of 1986,  as amended,  nor are we acting on behalf of
any  such  plan  or  arrangement  nor  using  the  assets  of any  such  plan or
arrangement to effect such acquisition, (e) if an insurance company, in the case
of   ERISA-restricted   Certificates   that   have  been  the   subject   of  an
ERISA-Qualifying  Underwriting,  we are purchasing the  Certificates  with funds
contained in an "insurance  company general account" (as defined in Section V(e)
of Prohibited Transaction Class Exemption 95-60 ("PTCE 95-60")) and our purchase
and holding of the  Certificates  are covered  under  Sections I and III of PTCE
95-60,  (f)  we  have  not,  nor  has  anyone  acting  on  our  behalf  offered,
transferred,  pledged,  sold or  otherwise  disposed  of the  Certificates,  any
interest in the  Certificates or any other similar security to, or solicited any
offer  to  buy  or  accept  a  transfer,  pledge  or  other  disposition  of the
Certificates,  any interest in the  Certificates  or any other similar  security
from, or otherwise  approached or negotiated  with respect to the  Certificates,
any interest in the  Certificates or any other similar security with, any person
in any manner, or made any general  solicitation by means of general advertising
or in any other  manner,  or taken any other  action,  that would  constitute  a
distribution  of the  Certificates  under  the  Act or  that  would  render  the
disposition  of the  Certificates a violation of Section 5 of the Act or require
registration  pursuant  thereto,  nor  will  act,  nor  has  authorized  or will
authorize  any person to act, in such manner with  respect to the  Certificates,
(g) we are a  "qualified  institutional  buyer" as that term is  defined in Rule
144A  under the Act  ("Rule  144A")  and have  completed  either of the forms of
certification  to that effect  attached hereto as Annex 1 or Annex 2, (h) we are
aware that the sale to us is being made in reliance on Rule 144A, and (i) we are
acquiring the  Certificates  for our own account or for resale  pursuant to Rule
144A and further,  understand that such  Certificates may be resold,  pledged or
transferred  only  (A)  to a  person  reasonably  believed  to  be  a  qualified
institutional  buyer that  purchases for its own account or for the account of a
qualified institutional buyer to whom notice is given that the resale, pledge or
transfer  is being made in  reliance  on Rule 144A,  or (B)  pursuant to another
exemption from registration under the Act.

                                       K-1
<PAGE>

                                                  Very truly yours,

                                                  ______________________________
                                                  Print Name of Transferee

                                                  By:___________________________
                                                     Authorized Officer

                                      K-2
<PAGE>

                                                            ANNEX 1 TO EXHIBIT K

      QUALIFIED INSTITUTIONAL BUYER STATUS UNDER SEC RULE 144A

          [For Transferees Other Than Registered Investment Companies]

      The undersigned  (the "Buyer") hereby  certifies as follows to the parties
listed in the Rule  144A  Transferee  Certificate  to which  this  certification
relates with respect to the Certificates described therein:

      1. As indicated below,  the undersigned is the President,  Chief Financial
Officer, Senior Vice President or other executive officer of the Buyer.

      2. In connection  with  purchases by the Buyer,  the Buyer is a "qualified
institutional  buyer" as that term is defined in Rule 144A under the  Securities
Act of 1933,  as  amended  ("Rule  144A")  because  (i) the Buyer  owned  and/or
invested on a  discretionary  basis $ ______(1)  in  securities  (except for the
excluded  securities referred to below) as of the end of the Buyer's most recent
fiscal year (such amount being  calculated in accordance with Rule 144A and (ii)
the Buyer satisfies the criteria in the category marked below.

            ___ Corporation, etc. The Buyer is a corporation (other than a bank,
savings and loan association or similar  institution),  Massachusetts or similar
business trust,  partnership,  or charitable  organization  described in Section
501(c)(3) of the Internal Revenue Code of 1986, as amended.

            ___ Bank.  The Buyer (a) is a national  bank or banking  institution
organized  under the laws of any State,  territory  or the District of Columbia,
the business of which is substantially  confined to banking and is supervised by
the State or territorial  banking commission or similar official or is a foreign
bank or  equivalent  institution,  and (b) has an audited  net worth of at least
$25,000,000 as demonstrated in its latest annual financial statements, a copy of
which is attached hereto.

            ___  Savings  and  Loan.  The  Buyer  (a)  is  a  savings  and  loan
association,   building  and  loan  association,   cooperative  bank,  homestead
association or similar institution,  which is supervised and examined by a State
or Federal  authority  having  supervision  over any such  institutions  or is a
foreign  savings and loan  association or equivalent  institution and (b) has an
audited net worth of at least  $25,000,000 as  demonstrated in its latest annual
financial statements, a copy of which is attached hereto.

            ___  Broker-dealer.  The Buyer is a dealer  registered  pursuant  to
Section 15 of the ------------- Securities Exchange Act of 1934.

            ___  Insurance  Company.  The Buyer is an  insurance  company  whose
primary and  predominant  business  activity is the writing of  insurance or the
reinsuring of risks underwritten by insurance  companies and which is subject to
supervision by the insurance  commissioner or a similar  official or agency of a
State, territory or the District of Columbia.

                                      K-3
<PAGE>

            ___  State or  Local  Plan.  The  Buyer  is a plan  established  and
maintained  by  a  State,   its  political   subdivisions,   or  any  agency  or
instrumentality of the State or its political  subdivisions,  for the benefit of
its employees.

            ___ ERISA  Plan.  The Buyer is an employee  benefit  plan within the
meaning of Title I of the Employee Retirement Income Security Act of 1974.

            ___  Investment   Advisor.   The  Buyer  is  an  investment  advisor
registered under the Investment Advisors Act of 1940.

            ___ Small  Business  Investment  Company.  Buyer is a small business
investment  company  licensed by the U.S.  Small Business  Administration  under
Section 301(c) or (d) of the Small Business Investment Act of 1958.

            ___ Business  Development  Company.  Buyer is a business development
company as defined in Section 202(a)(22) of the Investment Advisors Act of 1940.

      3. The term "securities" as used herein does not include (i) securities of
issuers that are affiliated with the Buyer,  (ii) securities that are part of an
unsold  allotment  to or  subscription  by the Buyer,  if the Buyer is a dealer,
(iii)  securities  issued  or  guaranteed  by the  U.S.  or any  instrumentality
thereof,  (iv)  bank  deposit  notes  and  certificates  of  deposit,  (v)  loan
participations,  (vi) repurchase agreements,  (vii) securities owned but subject
to a repurchase  agreement  and (viii)  currency,  interest  rate and  commodity
swaps.

      4. For purposes of determining  the aggregate  amount of securities  owned
and/or invested on a discretionary  basis by the Buyer,  the Buyer used the cost
of such  securities  to the  Buyer  and did not  include  any of the  securities
referred to in the preceding  paragraph,  except (i) where the Buyer reports its
securities  holdings in its  financial  statements  on the basis of their market
value,  and  (ii) no  current  information  with  respect  to the  cost of those
securities has been published. If clause (ii) in the preceding sentence applies,
the securities may be valued at market.  Further,  in determining such aggregate
amount,  the Buyer may have included  securities  owned by  subsidiaries  of the
Buyer,  but only if such  subsidiaries  are  consolidated  with the Buyer in its
financial  statements  prepared in accordance with generally accepted accounting
principles  and if the  investments of such  subsidiaries  are managed under the
Buyer's direction.  However, such securities were not included if the Buyer is a
majority-owned,  consolidated  subsidiary of another enterprise and the Buyer is
not itself a reporting  company  under the  Securities  Exchange Act of 1934, as
amended.

      5.  The  Buyer  acknowledges  that  it is  familiar  with  Rule  144A  and
understands  that the seller to it and other parties related to the Certificates
are relying and will continue to rely on the statements  made herein because one
or more sales to the Buyer may be in reliance on Rule 144A.

      6. Until the date of purchase of the Rule 144A Securities,  the Buyer will
notify each of the parties to which this certification is made of any changes in
the information and conclusions herein.  Until such notice is given, the Buyer's
purchase  of  the   Certificates   will  constitute  a  reaffirmation   of  this
certification  as of the date of such purchase.  In addition,  if the Buyer is a
bank or  savings  and loan is  provided  above,  the Buyer  agrees  that it will
furnish to such parties updated annual financial  statements promptly after they
become available.

                                      K-4
<PAGE>

                                                   _____________________________
                                                   Print Name of Transferee

                                                   By:__________________________
                                                   Name:________________________
                                                   Title:_______________________
                                                   Date:________________________

                                      K-5
<PAGE>

                                                            ANNEX 2 TO EXHIBIT K

            QUALIFIED INSTITUTIONAL BUYER STATUS UNDER SEC RULE 144A

           [For Transferees That are Registered Investment Companies]

      The undersigned  (the "Buyer") hereby  certifies as follows to the parties
listed in the Rule  144A  Transferee  Certificate  to which  this  certification
relates with respect to the Certificates described therein:

      1. As indicated below,  the undersigned is the President,  Chief Financial
Officer or Senior Vice  President  of the Buyer or, if the Buyer is a "qualified
institutional  buyer" as that term is defined in Rule 144A under the  Securities
Act of 1933,  as  amended  ("Rule  144A")  because  Buyer is part of a Family of
Investment Companies (as defined below), is such an officer of the Adviser.

      2. In  connection  with  purchases  by Buyer,  the  Buyer is a  "qualified
institutional  buyer" as  defined in SEC Rule 144A  because  (i) the Buyer is an
investment  company  registered  under the  Investment  Company Act of 1940,  as
amended and (ii) as marked  below,  the Buyer  alone,  or the Buyer's  Family of
Investment Companies,  owned at least $100,000,000 in securities (other than the
excluded  securities referred to below) as of the end of the Buyer's most recent
fiscal year. For purposes of determining  the amount of securities  owned by the
Buyer or the Buyer's Family of Investment Companies, the cost of such securities
was  used,  except  (i)  where the  Buyer or the  Buyer's  Family of  Investment
Companies  reports its  securities  holdings in its financial  statements on the
basis of their market value, and (ii) no current information with respect to the
cost of those  securities  has been  published.  If clause (ii) in the preceding
sentence applies, the securities may be valued at market.

            ___ The  Buyer  owned  $ in  securities  (other  than  the  excluded
securities  referred to below) as of the end of the Buyer's  most recent  fiscal
year (such amount being calculated in accordance with Rule 144A).

            ___ The  Buyer is part of a Family  of  Investment  Companies  which
owned in the  aggregate  $ in  securities  (other than the  excluded  securities
referred  to below) as of the end of the Buyer's  most recent  fiscal year (such
amount being calculated in accordance with Rule 144A).

      3. The term "Family of  Investment  Companies" as used herein means two or
more  registered  investment  companies  (or series  thereof) that have the same
investment  adviser or  investment  advisers that are  affiliated  (by virtue of
being majority owned  subsidiaries  of the same parent or because one investment
adviser is a majority owned subsidiary of the other).

      4. The term "securities" as used herein does not include (i) securities of
issuers that are affiliated  with the Buyer or are part of the Buyer's Family of
Investment  Companies,  (ii) securities  issued or guaranteed by the U.S. or any
instrumentality  thereof,  (iii) bank deposit notes and certificates of deposit,
(iv) loan participations,  (v) repurchase agreements,  (vi) securities owned but
subject  to a  repurchase  agreement  and  (vii)  currency,  interest  rate  and
commodity swaps.

                                      K-5
<PAGE>

      5. The Buyer is familiar with Rule 144A and  understands  that the parties
listed in the Rule  144A  Transferee  Certificate  to which  this  certification
relates  are relying and will  continue  to rely on the  statements  made herein
because  one or more sales to the Buyer  will be in  reliance  on Rule 144A.  In
addition, the Buyer will only purchase for the Buyer's own account.

      6. Until the date of purchase of the  Certificates,  the undersigned  will
notify the parties listed in the Rule 144A Transferee  Certificate to which this
certification  relates of any changes in the information and conclusions herein.
Until such  notice is given,  the  Buyer's  purchase  of the  Certificates  will
constitute a reaffirmation  of this  certification  by the undersigned as of the
date of such purchase.

                                                     ___________________________
                                                     Print Name of Transferee

                                                     By:________________________
                                                     Name:______________________
                                                     Title:_____________________

                                                     IF AN ADVISER:

                                                     ---------------------------
                                                     Print Name of Buyer

                                                     Date:______________________

                                      K-6

                                    EXHIBIT L

                               REQUEST FOR RELEASE

                     [Substitution of Deleted Mortgage Loans
                                       or
                          Mortgage Loans Paid in Full]

      ____________________________________ Mortgage Loan Files

_____________________ hereby certifies that he/she is an officer of
_____________________, holding the office set forth beneath his/her signature,
and hereby further certifies as follows:

(Check One)

|_|   With respect to the  mortgage  loans  described in the attached  schedule,
      each such mortgage loan  constitutes a "Substitute  Mortgage Loan" (as the
      term is defined in the Pooling and Servicing Agreement).

|_|   With  respect  to the  "Mortgage  Loans"  (as the term is  defined  in the
      custodial agreement) described in the attached schedule:

      All payments of principal,  premium (if any),  and interest have been made
      with respect to the following:

      Loan Number:_______________________________________

      Borrower's Name: ______________________________

      County: ______________________________________

      We hereby certify that all amounts to be received in connection  with such
payments have been received.

------------------------------

Dated: ______________________

/  / Vice President

/  / Assistant Vice President

                                      L-1
<PAGE>

                                    EXHIBIT M

                         REQUEST FOR RELEASE AND RECEIPT
                         [For Servicing and Foreclosure]

                                                   _________ Mortgage Loan Files

LOAN INFORMATION

         Name of Mortgagor:     __________________________________

         Loan No.:             __________________________________

      The  undersigned  hereby  acknowledges  that it has  received  from  FIRST
TENNESSEE  BANK  NATIONAL  ASSOCIATION,  as Custodian  for  ____________________
Mortgage Loan Files,  the  documents  referred to below (the  "Documents").  All
capitalized  terms not otherwise defined in this Request for Release and Receipt
shall have the meanings ascribed to them in the Custodial  Agreement dated as of
__________________  among  ___________________ and FIRST TENNESSEE BANK NATIONAL
ASSOCIATION, as Custodian (the "Custodial Agreement").

                             [complete as necessary]

      The undersigned hereby acknowledges an agrees as follows:

      (1) The undersigned  shall hold and retain  possession of the Documents in
trust for the benefit of __________________, solely for the purposes provided in
the Custodial Agreement.

      (2) The  undersigned  shall not cause or permit  the  Documents  to become
subject to, or encumbered  by, any claim,  liens,  security  interest,  charges,
writs of attachment or other  impositions  nor shall the  undersigned  assert or
seek to assert any claims or rights of setoff to or against the Documents or any
proceeds thereof.

      (3) The  undersigned  shall  return  each and  every  Document  previously
requested  from the Mortgage  File to the  Custodian  when the need  therefor no
longer  exists,  unless the Mortgage  Loan  relating to the  Documents  has been
liquidated.

Date: __________

                                          NAME

                                          By:    _______________________________
                                          Name:  _______________________________
                                          Title: _______________________________

(1)   Buyer  must  own  and/or  invest  on  a   discretionary   basis  at  least
      $100,000,000  in securities  unless Buyer is a dealer,  and, in that case,
      Buyer must own and/or invest on a discretionary basis at least $10,000,000
      in securities.

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