EXHIBIT 4.1

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                 AMERICAN HOME MORTGAGE INVESTMENT TRUST 2004-4



                                     Issuer



                                       and



                              THE BANK OF NEW YORK



                                Indenture Trustee



                                    INDENTURE



                          Dated as of December 21, 2004



                              MORTGAGE-BACKED NOTES

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                                TABLE OF CONTENTS
                                -----------------

<TABLE>
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Section                                                                                            Page
-------                                                                                            ----

                                    ARTICLE I

                                   Definitions

<S><C>            <C>                                                                               <C>
   Section 1.01   Definitions.........................................................................3
   Section 1.02   Incorporation by Reference of Trust Indenture Act...................................3
   Section 1.03   Rules of Construction...............................................................3

                                   ARTICLE II

                           Original Issuance of Notes

   Section 2.01   Form................................................................................5
   Section 2.02   Execution, Authentication and Delivery..............................................5
   Section 2.03   Acceptance of Mortgage Loans by Indenture Trustee...................................5
   Section 2.04   Acceptance of Derivative Contracts by Indenture Trustee.............................7
   Section 2.05   Conveyance of the Group I Subsequent Mortgage Loans.................................7
   Section 2.06   Conveyance of the Group II Subsequent Mortgage Loans...............................10
   Section 2.07   Conveyance of the Group III Subsequent Mortgage Loans..............................13
   Section 2.08   Conveyance of the Group IV Subsequent Mortgage Loans...............................16
   Section 2.09   Conveyance of the Group V Subsequent Mortgage Loans................................19
   Section 2.10   Conveyance of the Group VI Subsequent Mortgage Loans...............................21
   Section 2.11   Conveyance of the Group VII Subsequent HELOC Mortgage Loans........................24

                                   ARTICLE III

                                    Covenants

   Section 3.01   Collection of Payments with respect to the Mortgage Loans
                  and HELOC Mortgage Loans...........................................................28
   Section 3.02   Maintenance of Office or Agency....................................................28
   Section 3.03   Money for Payments To Be Held in Trust; Paying Agent...............................28
   Section 3.04   Existence..........................................................................29
   Section 3.05   Payment of Available  Funds on the Group I, Group II,  Group III,
                  Group IV and Group V...............................................................30
   Section 3.06   Payment of Group VI Available Funds................................................34
   Section 3.07   Payment of Principal and Interest on the Class VII-A Notes.........................36
   Section 3.08   Rapid Amortization Events..........................................................38
   Section 3.09   Payments to the Class N Notes......................................................39
   Section 3.10   Other Matters With Respect to the Notes............................................39
   Section 3.11   Protection of Trust Estate.........................................................40
   Section 3.12   Opinions as to Trust Estate........................................................41
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<TABLE>
<CAPTION>

<S><C>            <C>                                                                               <C>
   Section 3.13   Performance of Obligations.........................................................41
   Section 3.14   Negative Covenants.................................................................42
   Section 3.15   Annual Statement as to Compliance..................................................42
   Section 3.16   Representations and Warranties Concerning the Mortgage Loans.......................42
   Section 3.17   Amendments to Servicing Agreement..................................................43
   Section 3.18   Master Servicer as Agent and Bailee of the Indenture Trustee.......................43
   Section 3.19   Investment Company Act.............................................................43
   Section 3.20   Issuer May Consolidate, etc........................................................43
   Section 3.21   Successor or Transferee............................................................46
   Section 3.22   No Other Business..................................................................46
   Section 3.23   No Borrowing.......................................................................46
   Section 3.24   Guarantees, Loans, Monthly Advances and Other Liabilities..........................46
   Section 3.25   Capital Expenditures...............................................................46
   Section 3.26   Determination of Note Interest Rate................................................46
   Section 3.27   Restricted Payments................................................................47
   Section 3.28   Notice of Events of Default........................................................47
   Section 3.29   Further Instruments and Acts.......................................................47
   Section 3.30   Statements to Noteholders..........................................................47
   Section 3.31   Interest Coverage Accounts.........................................................47
   Section 3.32   The Pre-Funding Accounts...........................................................49
   Section 3.33   Grant of the Subsequent Mortgage Loans and Subsequent HELOC Mortgage Loans.........51
   Section 3.34   Replacement Swap Agreements........................................................51
   Section 3.35   Payments Under the Insurance Policy................................................51
   Section 3.36   Replacement Insurance Policy.......................................................52
   Section 3.37   Certain Representations Regarding the Trust Estate.................................52
   Section 3.38   Allocation of Realized Losses......................................................54

                                   ARTICLE IV

               The Notes; Satisfaction and Discharge of Indenture

   Section 4.01   The Notes..........................................................................55
   Section 4.02   Registration  of and  Limitations  on Transfer and Exchange of Notes;
                  Appointment of Note Registrar and Certificate Registrar............................56
   Section 4.03   Mutilated, Destroyed, Lost or Stolen Notes.........................................56
   Section 4.04   Persons Deemed Owners..............................................................57
   Section 4.05   Cancellation.......................................................................57
   Section 4.06   Book-Entry Notes...................................................................58
   Section 4.07   Notices to Depository..............................................................59
   Section 4.08   Definitive Notes...................................................................59
   Section 4.09   Tax Treatment......................................................................59
   Section 4.10   Satisfaction and Discharge of Indenture............................................59
   Section 4.11   Application of Trust Money.........................................................60
   Section 4.12   Subrogation and Cooperation........................................................61
   Section 4.13   Repayment of Monies Held by Paying Agent...........................................62
   Section 4.14   Temporary Notes....................................................................62
   Section 4.15   Representation Regarding ERISA.....................................................62
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                                    ARTICLE V

                              Default and Remedies

<TABLE>
<CAPTION>

<S><C>            <C>                                                                               <C>

   Section 5.01   Events of Default..................................................................63
   Section 5.02   Acceleration of Maturity; Rescission and Annulment.................................63
   Section 5.03   Collection of Indebtedness and Suits for Enforcement by Indenture Trustee..........64
   Section 5.04   Remedies; Priorities...............................................................66
   Section 5.05   Optional Preservation of the Trust Estate..........................................70
   Section 5.06   Limitation of Suits................................................................70
   Section 5.07   Unconditional Rights of Noteholders To Receive Principal and Interest..............71
   Section 5.08   Restoration of Rights and Remedies.................................................71
   Section 5.09   Rights and Remedies Cumulative.....................................................71
   Section 5.10   Delay or Omission Not a Waiver.....................................................71
   Section 5.11   Control By Noteholders.............................................................72
   Section 5.12   Waiver of Past Defaults............................................................72
   Section 5.13   Undertaking for Costs..............................................................73
   Section 5.14   Waiver of Stay or Extension Laws...................................................73
   Section 5.15   Sale of Trust Estate...............................................................73
   Section 5.16   Action on Notes....................................................................75
   Section 5.17   Performance and Enforcement of Certain Obligations.................................75

                                   ARTICLE VI

                              The Indenture Trustee

   Section 6.01   Duties of Indenture Trustee........................................................76
   Section 6.02   Rights of Indenture Trustee........................................................77
   Section 6.03   Individual Rights of Indenture Trustee.............................................79
   Section 6.04   Indenture Trustee's Disclaimer.....................................................79
   Section 6.05   Notice of Event of Default.........................................................79
   Section 6.06   Reports by Indenture Trustee to Holders and Tax Administration.....................79
   Section 6.07   Compensation and Indemnity.........................................................79
   Section 6.08   Replacement of Indenture Trustee...................................................80
   Section 6.09   Successor Indenture Trustee by Merger..............................................81
   Section 6.10   Appointment of Co-Indenture Trustee or Separate Indenture Trustee..................81
   Section 6.11   Eligibility; Disqualification......................................................83
   Section 6.12   Preferential Collection of Claims Against Issuer...................................83
   Section 6.13   Representations and Warranties.....................................................83
   Section 6.14   Directions to Indenture Trustee....................................................83
   Section 6.15   The Agents.........................................................................84
   Section 6.16   Administrative Duties..............................................................84
   Section 6.17   Records............................................................................86
   Section 6.18   Additional Information to be Furnished.............................................86
   Section 6.19   Execution of Derivative Contracts and other Documents..............................86
   Section 6.20   Indenture Trustee's Application For Instructions From the Issuer...................86
   Section 6.21   Limitation of Liability............................................................87
   Section 6.22   Assignment of Rights, Not Assumption of Duties.....................................87
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                                   ARTICLE VII

                         Noteholders' Lists and Reports

<TABLE>
<CAPTION>

<S><C>            <C>                                                                               <C>
   Section 7.01   Issuer To Furnish Indenture Trustee Names and Addresses of Noteholders.............88
   Section 7.02   Preservation of Information; Communications to Noteholders.........................88
   Section 7.03   Reports of Issuer..................................................................88
   Section 7.04   Reports by Indenture Trustee.......................................................89
   Section 7.05   Statements to Noteholders..........................................................89

                                  ARTICLE VIII

                      Accounts, Disbursements and Releases

   Section 8.01   Collection of Money................................................................93
   Section 8.02   Trust Accounts.....................................................................93
   Section 8.03   Officer's Certificate..............................................................94
   Section 8.04   Termination Upon Distribution to Noteholders.......................................94
   Section 8.05   Release of Trust Estate............................................................94
   Section 8.06   Surrender of Notes Upon Final Payment..............................................95
   Section 8.07   Optional Redemption of the Notes...................................................95

                                   ARTICLE IX

                             Supplemental Indentures

   Section 9.01   Supplemental Indentures Without Consent of Noteholders.............................97
   Section 9.02   Supplemental Indentures With Consent of Noteholders................................98
   Section 9.03   Execution of Supplemental Indentures..............................................100
   Section 9.04   Effect of Supplemental Indenture..................................................100
   Section 9.05   Conformity with Trust Indenture Act...............................................100
   Section 9.06   Reference in Notes to Supplemental Indentures.....................................100

                                    ARTICLE X

                                  Miscellaneous

   Section 10.01  Compliance Certificates and Opinions, etc.........................................101
   Section 10.02  Form of Documents Delivered to Indenture Trustee..................................102
   Section 10.03  Acts of Noteholders...............................................................103
   Section 10.04  Notices etc., to Indenture Trustee, Issuer, Insurer and Rating Agencies...........103
   Section 10.05  Notices to Noteholders; Waiver....................................................104
   Section 10.06  Conflict with Trust Indenture Act.................................................105
   Section 10.07  Effect of Headings................................................................105
   Section 10.08  Successors and Assigns............................................................105
   Section 10.09  Separability......................................................................105
   Section 10.10  Benefits of Indenture.............................................................105
   Section 10.11  Legal Holidays....................................................................106
   Section 10.12  GOVERNING LAW.....................................................................106
   Section 10.13  Counterparts......................................................................106
   Section 10.14  Recording of Indenture............................................................106
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<CAPTION>

<S><C>            <C>                                                                               <C>
   Section 10.15  Issuer Obligation.................................................................106
   Section 10.16  No Petition.......................................................................107
   Section 10.17  Inspection........................................................................107
</TABLE>


                                    EXHIBITS

         Exhibit A-1       --        Form of Class [_-A-_] Notes
         Exhibit A-2       --        Form of Class [__]-M-[_] Notes
         Exhibit A-3       --        Form of Class [__]-B-[_] Notes
         Exhibit A-4       --        Form of Class N Notes
         Exhibit B         --        Mortgage Loan Schedule
         Exhibit C         --        Form of Cap Contract
         Exhibit D         --        Form of Corridor Contract
         Exhibit E         --        Form of Swap Agreement
         Exhibit F         --        Insurance Agreement
         Exhibit G         --        Form of Subsequent Transfer Instrument
         Exhibit H         --        Form of Addition Notice

         Appendix A        --        Definitions





                                        v
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                  This Indenture, dated as of December 21, 2004, is entered into
between American Home Mortgage Investment Trust 2004-4, a Delaware statutory
trust, as Issuer (the "Issuer"), and The Bank of New York, a New York banking
corporation, as Indenture Trustee (the "Indenture Trustee").

                                WITNESSETH THAT:

                  Each party hereto agrees as follows for the benefit of the
other party and for the equal and ratable benefit of the Holders of the Issuer's
Mortgage-Backed Notes, Series 2004-4 (the "Notes").

                                 GRANTING CLAUSE

                  The Issuer hereby Grants to the Indenture Trustee at the
Closing Date, as trustee for the benefit of the Holders of the Notes and the
Insurer, all of the Issuer's right, title and interest in and to, whether now
existing or hereafter created, (a) the Mortgage Loans, Eligible Substitute
Mortgage Loans and the proceeds thereof and all rights under the Related
Documents; (b) the HELOC Mortgage Loans, related Eligible Substitute Mortgage
Loans and the proceeds thereof and all rights under the Related Documents; (c)
with respect to the Holders of the Class VII-A Notes, the Insurance Policy; (d)
additional Draws under the HELOC Mortgage Loans conveyed to the Trust (e) the
rights of the Issuer under the Derivative Contracts and all payments received
under the Derivative Contracts; (f) all funds on deposit from time to time in
the Collection Account allocable to the Mortgage Loans and HELOC Mortgage Loans
excluding any investment income from such funds; (h) all funds on deposit from
time to time in the Payment Account and in all proceeds thereof; (i) all funds
on deposit from time to time in the Pre-Funding Accounts and the Interest
Coverage Accounts and in all proceeds thereof; (j) all rights under (i) the
Mortgage Loan Purchase Agreement as assigned to the Issuer, with respect to the
Initial Mortgage Loans, and each Group I, Group II, Group III, Group IV, Group
V, Group VI and Group VII Subsequent Mortgage Loan Purchase Agreements as
assigned to the Issuer, with respect to the related Group I, Group II, Group
III, Group IV, Group V, Group VI and Group VII Subsequent Mortgage Loans (ii)
the Servicing Agreements and any Subservicing Agreements, (iii) any title,
hazard and primary insurance policies with respect to the Mortgaged Properties;
and (iv) the Custodial Agreement; and (k) all present and future claims,
demands, causes and choses in action in respect of any or all of the foregoing
and all payments on or under, and all proceeds of every kind and nature
whatsoever in respect of, any or all of the foregoing and all payments on or
under, and all proceeds of every kind and nature whatsoever in the conversion
thereof, voluntary or involuntary, into cash or other liquid property, all cash
proceeds, accounts, accounts receivable, notes, drafts, acceptances, checks,
deposit accounts, rights to payment of any and every kind, and other forms of
obligations and receivables, instruments and other property which at any time
constitute all or part of or are included in the proceeds of any of the
foregoing (collectively, the "Trust Estate" or the "Collateral").

                  The foregoing Grant is made in trust to secure the payment of
principal of and interest on, and any other amounts owing in respect of, the
Notes, equally and ratably without


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prejudice (except as otherwise provided herein), priority or distinction, and to
secure compliance with the provisions of this Indenture, all as provided in this
Indenture.

                  The Indenture Trustee, as trustee on behalf of the Holders of
the Notes and the Insurer, acknowledges such Grant, accepts the trust under this
Indenture in accordance with the provisions hereof and agrees to perform its
duties as Indenture Trustee as required herein.

                  The Indenture Trustee agrees that it will hold the Insurance
Policy in trust and that it will hold any proceeds of any claim made upon the
Insurance Policy solely for the use and benefit of the Holders of the ClassVII-A
Notes in accordance with the terms hereof and the terms of the Insurance Policy.










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                                    ARTICLE I

                                   Definitions

         Section 1.01 Definitions. For all purposes of this Indenture, except as
otherwise expressly provided herein or unless the context otherwise requires,
capitalized terms used but not otherwise defined herein shall have the meanings
assigned to such terms in the Definitions attached hereto as Appendix A which is
incorporated by reference herein. All other capitalized terms used herein shall
have the meanings specified herein.

         Section 1.02 Incorporation by Reference of Trust Indenture Act.
Whenever this Indenture refers to a provision of the Trust Indenture Act (the
"TIA"), the provision is incorporated by reference in and made a part of this
Indenture. The following TIA terms used in this Indenture have the following
meanings:

                  "Commission" means the Securities and Exchange Commission.

                  "indenture securities" means the Notes.

                  "indenture security holder" means a Noteholder.

                  "indenture to be qualified" means this Indenture.

                  "indenture trustee" or "institutional trustee" means the
Indenture Trustee.

                  "obligor" on the indenture securities means the Issuer and any
other obligor on the indenture securities.

         All other TIA terms used in this Indenture that are defined by the TIA,
defined by TIA reference to another statute or defined by Commission rules have
the meanings assigned to them by such definitions.

         Section 1.03 Rules of Construction. Unless the context otherwise
requires:

                  (i)      a term has the meaning assigned to it;

                  (ii)     an accounting term not otherwise defined has the
         meaning assigned to it in accordance with generally accepted accounting
         principles as in effect from time to time;

                  (iii)    "or" is not exclusive;

                  (iv)     "including" means including without limitation;

                  (v)      words in the singular include the plural and words in
         the plural include the singular; and

                  (vi)     any agreement, instrument, statute, regulation or
         rule defined or referred to herein or in any instrument or certificate
         delivered in connection herewith means such


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         agreement, instrument, statute, regulation or rule as from time to time
         amended, modified or supplemented and includes (in the case of
         agreements or instruments) references to all attachments thereto and
         instruments incorporated therein; references to a Person are also to
         its permitted successors and assigns.










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                                   ARTICLE II

                           Original Issuance of Notes

         Section 2.01 Form. The Class A, Class M, Class B and Class N Notes,
together with the Indenture Trustee's certificate of authentication, shall be in
substantially the form set forth in Exhibits A-1, A-2 and A-3 to this Indenture,
respectively, with such appropriate insertions, omissions, substitutions and
other variations as are required or permitted by this Indenture.

         The Notes shall be typewritten, printed, lithographed or engraved or
produced by any combination of these methods (with or without steel engraved
borders).

         The terms of the Notes set forth in Exhibits A-1, A-2, A-3 and A-4 to
this Indenture are part of the terms of this Indenture.

         Section 2.02 Execution, Authentication and Delivery. The Notes shall be
executed on behalf of the Issuer by any of its Authorized Officers. The
signature of any such Authorized Officer on the Notes may be manual or
facsimile.

         Notes bearing the manual or facsimile signature of individuals who were
at any time Authorized Officers of the Issuer shall bind the Issuer,
notwithstanding that such individuals or any of them have ceased to hold such
offices prior to the authentication and delivery of such Notes or did not hold
such offices at the date of such Notes.

         The Indenture Trustee shall upon Issuer Request authenticate and
deliver each Class of Notes for original issue in an aggregate initial principal
amount equal to the Initial Note Principal Balance for such Class of Notes.

         Each of the Notes shall be dated the date of its authentication. The
Notes shall be issuable as registered Notes and shall be issuable in the minimum
initial Note Principal Balances of $25,000 and in integral multiples of $1 in
excess thereof, except with respect to the Class VII-A Notes. The Class VII-A
Notes shall be issuable in the minimum initial Note Principal Balances of
$25,000 and in integral multiples of $1,000 in excess thereof.

         No Note shall be entitled to any benefit under this Indenture or be
valid or obligatory for any purpose, unless there appears on such Note a
certificate of authentication substantially in the form provided for herein
executed by the Indenture Trustee by the manual signature of one of its
authorized signatories, and such certificate upon any Note shall be conclusive
evidence, and the only evidence, that such Note has been duly authenticated and
delivered hereunder.

         Section 2.03 Acceptance of Mortgage Loans by Indenture Trustee.

         (a)      The Indenture Trustee shall cause the Custodian as agent for
the Indenture Trustee to acknowledge receipt of, subject to the exceptions the
Custodian notes pursuant to the procedures described below, the documents (or
certified copies thereof) referred to in Section 2.1(b) of the Mortgage Loan
Purchase Agreement and the Subsequent Mortgage Loan Purchase Agreements, and to
declare that it holds and will continue to hold those documents and any


                                       5
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amendments, replacements or supplements thereto and all other assets of the
Trust Estate, as agent for the Indenture Trustee in trust for the use and
benefit of all present and future Holders of the Notes and the Insurer. No later
than the Closing Date, with respect to the Initial Mortgage Loans and Initial
HELOC Mortgage Loans or the applicable Subsequent Transfer Date, with respect to
the related Group I, Group II, Group III, Group IV, Group V and Group VI
Subsequent Mortgage Loans and the Group VII Subsequent HELOC Mortgage Loans (or,
with respect to any Eligible Substitute Mortgage Loan, within 5 days after the
receipt by the Custodian as agent for the Indenture Trustee thereof and, with
respect to any documents received after the Closing Date, promptly thereafter),
the Indenture Trustee shall cause the Custodian, as agent for the Indenture
Trustee, to agree, for the benefit of the Noteholders and the Insurer, to review
each Mortgage File delivered to it and to execute and deliver, or to cause to be
executed and delivered, to the Seller, the Indenture Trustee, the Insurer and
the Master Servicer an Initial Certification in the form annexed to the
Custodial Agreement as Exhibit One. In conducting such review, the Indenture
Trustee shall cause the Custodian, as agent for the Indenture Trustee, to
ascertain whether all required documents described in Section 2.1(b)(i) to (v)
of (a) the Mortgage Loan Purchase Agreement, with respect to the Initial
Mortgage Loans and Initial HELOC Mortgage Loans, and (b) the applicable
Subsequent Mortgage Loan Purchase Agreement, with respect to the related Group
I, Group II, Group III, Group IV, Group V, Group VI Subsequent Mortgage Loans
and Group VII Subsequent HELOC Mortgage Loans, have been executed and received
and whether those documents relate, to the Mortgage Loans and HELOCs it has
received, as identified in Exhibit B to this Indenture, as supplemented
(provided, however, that with respect to those documents described in subclause
(b)(vi) of such section, the Custodian's obligations shall extend only to
documents actually delivered pursuant to such subclause). In performing any such
review, the Custodian as agent for the Indenture Trustee may conclusively rely
on the purported due execution and genuineness of any such document and on the
purported genuineness of any signature thereon. If the Custodian as agent for
the Indenture Trustee finds any document constituting part of the Mortgage File
not to have been executed or received, or to be unrelated to the Mortgage Loans
identified in Exhibit B to this Indenture or to appear to be defective on its
face, the Custodian as agent for the Indenture Trustee shall promptly notify the
Seller, the Insurer and the Indenture Trustee of such finding and the Seller's
obligation to cure such defect or repurchase or substitute for the related
Mortgage Loan. To the extent the Indenture Trustee has not received a Mortgage
File with respect to any of the Initial Mortgage Loans or Initial HELOC Mortgage
Loans by the Closing Date, or any of the related Group I, Group II, Group III,
Group IV, Group V, Group VI Subsequent Mortgage Loans or Group VII Subsequent
HELOC Mortgage Loans by the applicable Subsequent Transfer Date, the Indenture
Trustee shall not require the deposit of cash into the Payment Account or any
other account to cover the amount of that Mortgage Loan and shall solely treat
such Mortgage Loan as if it were in breach of a representation or warranty;
provided that the aggregate Stated Principal Balance of such Mortgage Loans does
not exceed 1% of the sum of the Cut-off Date Balance and the Group I, Group II,
Group III, Group IV, Group V, Group VI and Group VI Original Pre-Funded Amounts.

                  (i)      No later than 180 days after the Closing Date (with
         respect to the Initial Mortgage Loans and Initial HELOC Mortgage Loans)
         or the applicable Subsequent Transfer Date (with respect to the related
         Group I, Group II, Group II, Group III, Group IV, Group V, Group VI
         Subsequent Mortgage Loans and Group VII Subsequent HELOC Mortgage
         Loans), the Custodian as agent for the Indenture Trustee will review,
         for the


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         benefit of the Noteholders and the Insurer, the Mortgage Files and will
         execute and deliver or cause to be executed and delivered to the
         Seller, the Insurer, the related Master Servicer and the Indenture
         Trustee, a Final Certification in the form annexed to the Custodial
         Agreement as Exhibit Two. In conducting such review, the Custodian as
         agent for the Indenture Trustee will ascertain whether an original of
         each document described in subclauses (b)(ii)-(iv) of Section 2.1 of
         the Mortgage Loan Purchase Agreement, with respect to the Initial
         Mortgage Loans and Initial HELOC Mortgage Loans, and (b) the applicable
         Subsequent Mortgage Loan Purchase Agreement, with respect to the
         related Group I, Group II, Group III, Group IV, Group V, Group VI
         Subsequent Mortgage Loans and Group VII Subsequent HELOC Mortgage
         Loans, required to be recorded has been returned from the applicable
         recording office with evidence of recording thereon or a certified copy
         has been obtained from such recording office. If the Custodian as agent
         for the Indenture Trustee finds any document constituting part of the
         Mortgage File has not been executed or received, or to be unrelated, to
         the Mortgage Loans and HELOC Mortgage Loans identified in Exhibit B to
         this Indenture or to appear defective on its face, the Custodian as
         agent for the Indenture Trustee shall promptly notify the Seller, the
         Insurer and the Indenture Trustee.

                  (ii)     Upon deposit by the Seller of the Repurchase Price in
         the Payment Account, the Indenture Trustee shall cause the Custodian to
         release to the Seller or the related Master Servicer, as applicable,
         the related Mortgage File and the Indenture Trustee shall execute and
         deliver all instruments of transfer or assignment, without recourse,
         furnished to it by the Seller or the related Master Servicer, as
         applicable, as are necessary to vest in the Seller or the related
         Master Servicer, as applicable, title to and rights under the related
         Mortgage Loan or HELOC Mortgage Loan. Such purchase shall be deemed to
         have occurred on the date on which the deposit of the Repurchase Price
         in the Payment Account was received by the Indenture Trustee. The
         Custodian as agent for the Indenture Trustee shall amend the applicable
         Mortgage Loan Schedule to reflect such repurchase and shall promptly
         notify the related Master Servicer, the Insurer and the Indenture
         Trustee of such amendment.

         Section 2.04 Acceptance of Derivative Contracts by Indenture Trustee.
The Indenture Trustee acknowledges receipt of the Swap Agreements, the Corridor
Contracts and the Cap Contracts and declares that it holds and will continue to
hold these documents and any amendments, replacements or supplements thereto and
all other assets of the Trust Estate as Indenture Trustee in trust for the use
and benefit of all present and future Holders of the Notes. The Indenture
Trustee shall enforce the Swap Agreements, the Corridor Contract and the Cap
Contracts in accordance with their terms.

         Section 2.05 Conveyance of the Group I Subsequent Mortgage Loans. (a)
Subject to the conditions set forth in paragraph (b) below and in consideration
of the Indenture Trustee's delivery on the applicable Subsequent Transfer Dates,
to or upon the written order of the Depositor, of all or a portion of the
balance of funds in the Group I Pre-Funding Account, the Depositor shall, on the
Subsequent Transfer Date, sell, transfer, assign, set over and convey without
recourse to the Trust Estate, but subject to the other terms and provisions of
this Agreement, all of the right, title and interest of the Depositor in and to
(i) the related Group I


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<PAGE>


Subsequent Mortgage Loans identified on the Mortgage Loan Schedule attached to
the related Group I Subsequent Transfer Instrument delivered by the Depositor on
the Subsequent Transfer Date, (ii) all interest accruing thereon on and after
the Subsequent Cut-off Date (with respect to the Group I Subsequent Mortgage
Loans) and all collections in respect of interest and principal due after the
Subsequent Cut-off Date and (iii) all items with respect to such Group I
Subsequent Mortgage Loans to be delivered pursuant to Section 2.03 and the other
items in the related Mortgage Files; provided, however, that the Depositor
reserves and retains all right, title and interest in and to principal received
and interest accruing on the Group I Subsequent Mortgage Loans prior to the
related Subsequent Cut-off Date. The transfer to the Indenture Trustee for
deposit in the Trust Estate by the Depositor of the Group I Subsequent Mortgage
Loans identified on the Mortgage Loan Schedule shall be absolute and is intended
by the Depositor, the RMBS Master Servicer, the Indenture Trustee and the
Noteholders to constitute and to be treated as a sale of the Group I Subsequent
Mortgage Loans by the Depositor to the Trust Estate. The related Mortgage File
for each Group I Subsequent Mortgage Loan shall be delivered to the Custodian at
least three (3) Business Days prior to the related Subsequent Transfer Date.

         The purchase price paid by the Indenture Trustee from amounts released
from the Group I Pre-Funding Account shall be one-hundred percent (100%) of the
aggregate Stated Principal Balance of the Group I Subsequent Mortgage Loans so
transferred (as identified on the Mortgage Loan Schedule provided by the
Depositor).

         (b)      The Depositor shall transfer to the Indenture Trustee for
deposit in the Trust Estate the applicable Group I Subsequent Mortgage Loans and
the other property and rights related thereto as described in paragraph (a)
above, and the Indenture Trustee shall release such applicable funds from the
Group I Pre-Funding Account, only upon the satisfaction of each of the following
conditions on or prior to the Subsequent Transfer Date:

                  (i)      the Depositor shall have provided the Indenture
         Trustee and the Rating Agencies with a timely Addition Notice and shall
         have provided any information reasonably requested by the Indenture
         Trustee with respect to the Group I Subsequent Mortgage Loans;

                  (ii)     the Depositor shall have delivered to the Indenture
         Trustee a duly executed Group I Subsequent Transfer Instrument (which
         the Indenture Trustee is hereby authorized to execute), which shall
         include a Mortgage Loan Schedule listing the Group I Subsequent
         Mortgage Loans, and the RMBS Master Servicer, in its capacity as
         Originator, shall have delivered a computer file containing such
         Mortgage Loan Schedule to the Indenture Trustee at least three (3)
         Business Days prior to the related Group I Subsequent Transfer Date;

                  (iii)    as of each Group I Subsequent Transfer Date, as
         evidenced by delivery of the related Group I Subsequent Transfer
         Instrument, substantially in the form of Exhibit G, the Depositor shall
         not be insolvent nor shall it have been rendered insolvent by such
         transfer nor shall it be aware of any pending insolvency;


                                       8
<PAGE>


                  (iv)     such sale and transfer shall not result in a material
         adverse tax consequence to the Trust Estate or to the Noteholders;

                  (v)      the Funding Period shall not have terminated;

                  (vi)     the Depositor shall not have selected the applicable
         Group I Subsequent Mortgage Loans in a manner that it believed to be
         adverse to the interests of the Noteholders;

                  (vii)    the Depositor shall have delivered to the Indenture
         Trustee the related Group I Subsequent Transfer Instrument confirming
         the satisfaction of all of the conditions specified in this Section
         2.05 and, pursuant to such Group I Subsequent Transfer Instrument,
         assigned to the Indenture Trustee without recourse for the benefit of
         the Noteholders all the right, title and interest of the Depositor, in,
         to and under the applicable Group I Subsequent Mortgage Loan Purchase
         Agreement, to the extent of the related Group I Subsequent Mortgage
         Loans; and

                  (viii)   the Depositor shall have delivered to the Indenture
         Trustee an Opinion of Counsel addressed to the Indenture Trustee and
         the Rating Agencies with respect to the transfer of the applicable
         Group I Subsequent Mortgage Loans substantially in the form of the
         Opinion of Counsel delivered to the Indenture Trustee on the Closing
         Date regarding the validity of the conveyance and the true sale of such
         Group I Subsequent Mortgage Loans.

         (c)      The obligation of the Trust Estate to purchase a Group I
Subsequent Mortgage Loan on any Subsequent Transfer Date is subject to the
satisfaction of the conditions set forth in the immediately following paragraph
and the accuracy of the following representations and warranties with respect to
each such Group I Subsequent Mortgage Loan determined as of the applicable
Subsequent Cut-off Date: (i) such Mortgage Loan may not be 30 or more days
delinquent as of the last day of the month preceding the Subsequent Cut-off
Date; (ii) the original term to stated maturity of such Mortgage Loan will be
480 months; (iii) each Group I Subsequent Mortgage Loan must be an
adjustable-rate Mortgage Loan with a first lien on the related mortgaged
property; (iv) no Group I Subsequent Mortgage Loan will have a first Payment
Date occurring after April 1, 2005; (v) the latest maturity date of any Group I
Subsequent Mortgage Loan will be no later than March 1, 2045; (vi) none of the
Group I Subsequent Mortgage Loans will be a buydown loan; (vii) such Mortgage
Loan will have a credit score of not less than 556; (viii) such Mortgage Loan
will have a Mortgage Rate as of the applicable Subsequent Cut-off Date ranging
from approximately 1.000% per annum to approximately 5.850% per annum; (ix) none
of the Group I Subsequent Mortgage loans will be a New York State "high cost"
loan; and (x) such Group I Subsequent Mortgage Loan shall have been underwritten
in accordance with the criteria set forth under "The Mortgage Pool--Underwriting
Standards" in the Prospectus Supplement.

         (d)      In addition, following the purchase of any Group I Subsequent
Mortgage Loan by the Trust, the applicable Group I Subsequent Mortgage Loans
will as of the related Subsequent Cut-off Date: (i) have a weighted average
Mortgage Rate ranging from 1.747% to 1.847% per


                                       9
<PAGE>


annum; (ii) consist of Mortgage Loans with prepayment charges representing no
less than approximately 38.67% of the Pool Balance; (iii) have a weighted
average credit score ranging from 695 to 701; (iv) have no more than 9.606% of
such Mortgage Loans concentrated in the state of California; (v) have no less
than 54.22% of the mortgaged properties securing Group I Loans be owner
occupied; (vi) have no less than 62.18% of the mortgaged properties securing
Group I Mortgage Loans be single family detached and de minimis planned unit
developments; (vii) have no more than 41.67% of the Group I Loans be cash-out
refinance; (viii) not have any of such group of Group I Subsequent Mortgage
Loans with a loan-to-value ratio greater than 80% not be covered by a Primary
Insurance Policy or the Radian Lender-Paid PMI Policy; (ix) have no more than
80% of the Group I Loans be Mortgage Loans with an interest only period; and (x)
together with the Group I Mortgage Loans already included in the trust, have no
more than 1.84% of such Mortgage Loans (by aggregate Stated Principal Balance as
of the Subsequent Cut-off Date) secured by mortgaged properties located in any
one zip code.

         Notwithstanding the foregoing, any Group I Subsequent Mortgage Loan may
be rejected by any Rating Agency if the inclusion of any such Group I Subsequent
Mortgage Loan would adversely affect the ratings of the Notes. In addition,
minor variances from the characteristics stated above will be permitted with the
consent of the Rating Agencies so long as there are compensating factors, and
the consent of the Rating Agencies to any group of Group I Subsequent Mortgage
Loans shall mean that the representations and warranties set forth in
subsections (c) and (d) above are accurate; provided, however, that the
information furnished to the Rating Agencies in respect of such Group I
Subsequent Mortgage Loans is true and correct in all material respects. At least
one (1) Business Day prior to the applicable Group I Subsequent Transfer Date,
each Rating Agency shall notify the Indenture Trustee as to which Group I
Subsequent Mortgage Loans, if any, shall not be included in the transfer on such
Group I Subsequent Transfer Date; provided, however, that the RMBS Master
Servicer, in its capacity as Originator, shall have delivered to each Rating
Agency at least three (3) Business Days prior to such Group I Subsequent
Transfer Date a computer file acceptable to each Rating Agency describing the
characteristics specified in subsections (c) and (d) above.

         Section 2.06 Conveyance of the Group II Subsequent Mortgage Loans. (a)
Subject to the conditions set forth in paragraph (b) below and in consideration
of the Indenture Trustee's delivery on the applicable Subsequent Transfer Dates,
to or upon the written order of the Depositor, of all or a portion of the
balance of funds in the Group II Pre-Funding Account, the Depositor shall, on
the Subsequent Transfer Date, sell, transfer, assign, set over and convey
without recourse to the Trust Estate, but subject to the other terms and
provisions of this Agreement, all of the right, title and interest of the
Depositor in and to (i) the related Group II Subsequent Mortgage Loans
identified on the Mortgage Loan Schedule attached to the related Group II
Subsequent Transfer Instrument delivered by the Depositor on the Subsequent
Transfer Date, (ii) all interest accruing thereon on and after the Subsequent
Cut-off Date (with respect to the Group II Subsequent Mortgage Loans) and all
collections in respect of interest and principal due after the Subsequent
Cut-off Date and (iii) all items with respect to such Group II Subsequent
Mortgage Loans to be delivered pursuant to Section 2.03 and the other items in
the related Mortgage Files; provided, however, that the Depositor reserves and
retains all right, title and interest in and to principal received and interest
accruing on the Group II Subsequent Mortgage Loans prior to the related
Subsequent Cut-off Date. The transfer to the Indenture


                                       10
<PAGE>


Trustee for deposit in the Trust Estate by the Depositor of the Group II
Subsequent Mortgage Loans identified on the Mortgage Loan Schedule shall be
absolute and is intended by the Depositor, the RMBS Master Servicer, the
Indenture Trustee and the Noteholders to constitute and to be treated as a sale
of the Group II Subsequent Mortgage Loans by the Depositor to the Trust Estate.
The related Mortgage File for each Group II Subsequent Mortgage Loan shall be
delivered to the Custodian at least three (3) Business Days prior to the related
Subsequent Transfer Date.

         The purchase price paid by the Indenture Trustee from amounts released
from the Group II Pre-Funding Account shall be one-hundred percent (100%) of the
aggregate Stated Principal Balance of the Group II Subsequent Mortgage Loans so
transferred (as identified on the Mortgage Loan Schedule provided by the
Depositor).

         (b)      The Depositor shall transfer to the Indenture Trustee for
deposit in the Trust Estate the applicable Group II Subsequent Mortgage Loans
and the other property and rights related thereto as described in paragraph (a)
above, and the Indenture Trustee shall release such applicable funds from the
Group II Pre-Funding Account, only upon the satisfaction of each of the
following conditions on or prior to the Subsequent Transfer Date:

                  (i)      the Depositor shall have provided the Indenture
         Trustee and the Rating Agencies with a timely Addition Notice and shall
         have provided any information reasonably requested by the Indenture
         Trustee with respect to the Group II Subsequent Mortgage Loans;

                  (ii)     the Depositor shall have delivered to the Indenture
         Trustee a duly executed Group II Subsequent Transfer Instrument (which
         the Indenture Trustee is hereby authorized to execute), which shall
         include a Mortgage Loan Schedule listing the Group II Subsequent
         Mortgage Loans, and the RMBS Master Servicer, in its capacity as
         Originator, shall have delivered a computer file containing such
         Mortgage Loan Schedule to the Indenture Trustee at least three (3)
         Business Days prior to the related Group II Subsequent Transfer Date;

                  (iii)    as of each Group II Subsequent Transfer Date, as
         evidenced by delivery of the related Group II Subsequent Transfer
         Instrument, substantially in the form of Exhibit G, the Depositor shall
         not be insolvent nor shall it have been rendered insolvent by such
         transfer nor shall it be aware of any pending insolvency;

                  (iv)     such sale and transfer shall not result in a material
         adverse tax consequence to the Trust Estate or to the Noteholders;

                  (v)      the Funding Period shall not have terminated;

                  (vi)     the Depositor shall not have selected the applicable
         Group II Subsequent Mortgage Loans in a manner that it believed to be
         adverse to the interests of the Noteholders;


                                       11
<PAGE>


                  (vii)    the Depositor shall have delivered to the Indenture
         Trustee the related Group II Subsequent Transfer Instrument confirming
         the satisfaction of all of the conditions specified in this Section
         2.06 and, pursuant to such Group II Subsequent Transfer Instrument,
         assigned to the Indenture Trustee without recourse for the benefit of
         the Noteholders all the right, title and interest of the Depositor, in,
         to and under the applicable Group II Subsequent Mortgage Loan Purchase
         Agreement, to the extent of the related Group II Subsequent Mortgage
         Loans; and

                  (viii)   the Depositor shall have delivered to the Indenture
         Trustee an Opinion of Counsel addressed to the Indenture Trustee and
         the Rating Agencies with respect to the transfer of the applicable
         Group II Subsequent Mortgage Loans substantially in the form of the
         Opinion of Counsel delivered to the Indenture Trustee on the Closing
         Date regarding the validity of the conveyance and the true sale of such
         Group II Subsequent Mortgage Loans.

         (c)      The obligation of the Trust Estate to purchase a Group II
Subsequent Mortgage Loan on any Subsequent Transfer Date is subject to the
satisfaction of the conditions set forth in the immediately following paragraph
and the accuracy of the following representations and warranties with respect to
each such Group II Subsequent Mortgage Loan determined as of the applicable
Subsequent Cut-off Date: (i) such Mortgage Loan may not be 30 or more days
delinquent as of the last day of the month preceding the Subsequent Cut-off
Date; (ii) the original term to stated maturity of such Mortgage Loan will be
360 months; (iii) each Group I Subsequent Mortgage Loan must be an
adjustable-rate Mortgage Loan with a first lien on the related mortgaged
property; (iv) no Group II Subsequent Mortgage Loan will have a first Payment
Date occurring after April 1, 2005; (v) the latest maturity date of any Group II
Subsequent Mortgage Loan will be no later than March 1, 2035; (vi) none of the
Group II Subsequent Mortgage Loans will be a buydown loan; (vii) such Mortgage
Loan will have a credit score of not less than 586; (viii) such Mortgage Loan
will have a Mortgage Rate as of the applicable Subsequent Cut-off Date ranging
from approximately 2.500% per annum to approximately 10.625% per annum; (ix)
none of the Group II Subsequent Mortgage loans will be a New York State "high
cost" loan; and (x) such Group II Subsequent Mortgage Loan shall have been
underwritten in accordance with the criteria set forth under "The Mortgage
Pool--Underwriting Standards" in the Prospectus Supplement.

         (d)      In addition, following the purchase of any Group II Subsequent
Mortgage Loan by the Trust, the applicable Group II Subsequent Mortgage Loans
will as of the related Subsequent Cut-off Date: (i) have a weighted average
Mortgage Rate ranging from 5.335% to 5.435% per annum; (ii) consist of Mortgage
Loans with prepayment charges representing no less than approximately 12.73% of
the Pool Balance; (iii) have a weighted average credit score ranging from 699 to
705; (iv) have no more than 16.17% of such Mortgage Loans concentrated in the
state of California; (v) have no less than 73.61% of the mortgaged properties
securing Group II Loans be owner occupied; (vi) have no less than 81.39% of the
mortgaged properties securing Group II Mortgage Loans be single family detached
and de minimis planned unit developments; (vii) have no more than 22.74% of the
Group II Loans be cash-out refinance; (viii) not have any of such group of Group
II Subsequent Mortgage Loans with a loan-to-value ratio greater than 80% not be
covered by a Primary Insurance Policy or the Radian Lender-Paid


                                       12
<PAGE>


PMI Policy; (ix) have no more than 75.20% of the Group II Loans be Mortgage
Loans with an interest only period; and (x) together with the Group II Mortgage
Loans already included in the trust, have no more than 0.58% of such Mortgage
Loans (by aggregate Stated Principal Balance as of the Subsequent Cut-off Date)
secured by mortgaged properties located in any one zip code.

         Notwithstanding the foregoing, any Group II Subsequent Mortgage Loan
may be rejected by any Rating Agency if the inclusion of any such Group II
Subsequent Mortgage Loan would adversely affect the ratings of the Notes. In
addition, minor variances from the characteristics stated above will be
permitted with the consent of the Rating Agencies so long as there are
compensating factors, and the consent of the Rating Agencies to any group of
Group II Subsequent Mortgage Loans shall mean that the representations and
warranties set forth in subsections (c) and (d) above are accurate; provided,
however, that the information furnished to the Rating Agencies in respect of
such Group II Subsequent Mortgage Loans is true and correct in all material
respects. At least one (1) Business Day prior to the applicable Group II
Subsequent Transfer Date, each Rating Agency shall notify the Indenture Trustee
as to which Group II Subsequent Mortgage Loans, if any, shall not be included in
the transfer on such Group II Subsequent Transfer Date; provided, however, that
the RMBS Master Servicer, in its capacity as Originator, shall have delivered to
each Rating Agency at least three (3) Business Days prior to such Group II
Subsequent Transfer Date a computer file acceptable to each Rating Agency
describing the characteristics specified in subsections (c) and (d) above.

         Section 2.07 Conveyance of the Group III Subsequent Mortgage Loans. (a)
Subject to the conditions set forth in paragraph (b) below and in consideration
of the Indenture Trustee's delivery on the applicable Subsequent Transfer Dates,
to or upon the written order of the Depositor, of all or a portion of the
balance of funds in the Group III Pre-Funding Account, the Depositor shall, on
the Subsequent Transfer Date, sell, transfer, assign, set over and convey
without recourse to the Trust Estate, but subject to the other terms and
provisions of this Agreement, all of the right, title and interest of the
Depositor in and to (i) the related Group III Subsequent Mortgage Loans
identified on the Mortgage Loan Schedule attached to the related Group III
Subsequent Transfer Instrument delivered by the Depositor on the Subsequent
Transfer Date, (ii) all interest accruing thereon on and after the Subsequent
Cut-off Date (with respect to the Group III Subsequent Mortgage Loans) and all
collections in respect of interest and principal due after the Subsequent
Cut-off Date and (iii) all items with respect to such Group III Subsequent
Mortgage Loans to be delivered pursuant to Section 2.03 and the other items in
the related Mortgage Files; provided, however, that the Depositor reserves and
retains all right, title and interest in and to principal received and interest
accruing on the Group III Subsequent Mortgage Loans prior to the related
Subsequent Cut-off Date. The transfer to the Indenture Trustee for deposit in
the Trust Estate by the Depositor of the Group III Subsequent Mortgage Loans
identified on the Mortgage Loan Schedule shall be absolute and is intended by
the Depositor, the RMBS Master Servicer, the Indenture Trustee and the
Noteholders to constitute and to be treated as a sale of the Group III
Subsequent Mortgage Loans by the Depositor to the Trust Estate. The related
Mortgage File for each Group III Subsequent Mortgage Loan shall be delivered to
the Custodian at least three (3) Business Days prior to the related Subsequent
Transfer Date.


                                       13
<PAGE>


         The purchase price paid by the Indenture Trustee from amounts released
from the Group III Pre-Funding Account shall be one-hundred percent (100%) of
the aggregate Stated Principal Balance of the Group III Subsequent Mortgage
Loans so transferred (as identified on the Mortgage Loan Schedule provided by
the Depositor).

         (b)      The Depositor shall transfer to the Indenture Trustee for
deposit in the Trust Estate the applicable Group III Subsequent Mortgage Loans
and the other property and rights related thereto as described in paragraph (a)
above, and the Indenture Trustee shall release such applicable funds from the
Group III Pre-Funding Account, only upon the satisfaction of each of the
following conditions on or prior to the Subsequent Transfer Date:

                  (i) the Depositor shall have provided the Indenture Trustee
         and the Rating Agencies with a timely Addition Notice, substantially in
         the form of Exhibit H hereto, and shall have provided any information
         reasonably requested by the Indenture Trustee with respect to the Group
         III Subsequent Mortgage Loans;

                  (ii)     the Depositor shall have delivered to the Indenture
         Trustee a duly executed Group I Subsequent Transfer Instrument (which
         the Indenture Trustee is hereby authorized to execute), which shall
         include a Mortgage Loan Schedule listing the Group III Subsequent
         Mortgage Loans, and the RMBS Master Servicer, in its capacity as
         Originator, shall have delivered a computer file containing such
         Mortgage Loan Schedule to the Indenture Trustee at least three (3)
         Business Days prior to the related Group III Subsequent Transfer Date;

                  (iii)    as of each Group III Subsequent Transfer Date, as
         evidenced by delivery of the related Group III Subsequent Transfer
         Instrument, substantially in the form of Exhibit G, the Depositor shall
         not be insolvent nor shall it have been rendered insolvent by such
         transfer nor shall it be aware of any pending insolvency;

                  (iv)     such sale and transfer shall not result in a material
         adverse tax consequence to the Trust Estate or to the Noteholders;

                  (v)      the Funding Period shall not have terminated;

                  (vi)     the Depositor shall not have selected the applicable
         Group III Subsequent Mortgage Loans in a manner that it believed to be
         adverse to the interests of the Noteholders;

                  (vii)    the Depositor shall have delivered to the Indenture
         Trustee the related Group III Subsequent Transfer Instrument confirming
         the satisfaction of all the conditions specified in this Section 2.07
         and, pursuant to such Group III Subsequent Transfer Instrument,
         assigned to the Indenture Trustee without recourse for the benefit of
         the Noteholders all the right, title and interest of the Depositor, in,
         to and under the applicable Group III Subsequent Mortgage Loan Purchase
         Agreement, to the extent of the related Group III Subsequent Mortgage
         Loans; and


                                       14
<PAGE>


                  (viii)   the Depositor shall have delivered to the Indenture
         Trustee an Opinion of Counsel addressed to the Indenture Trustee and
         the Rating Agencies with respect to the transfer of the applicable
         Group III Subsequent Mortgage Loans substantially in the form of the
         Opinion of Counsel delivered to the Indenture Trustee on the Closing
         Date regarding the validity of the conveyance and the true sale of such
         Group III Subsequent Mortgage Loans.

         (c)      The obligation of the Trust Estate to purchase a Group III
Subsequent Mortgage Loan on any Subsequent Transfer Date is subject to the
satisfaction of the conditions set forth in the immediately following paragraph
and the accuracy of the following representations and warranties with respect to
each such Group III Subsequent Mortgage Loan determined as of the applicable
Subsequent Cut-off Date: (i) such Mortgage Loan may not be 30 or more days
delinquent as of the last day of the month preceding the Subsequent Cut-off
Date; (ii) the original term to stated maturity of such Mortgage Loan will be
360 months; (iii) each Group III Subsequent Mortgage Loan must be an
adjustable-rate Mortgage Loan with a first lien on the related mortgaged
property; (iv) no Group III Subsequent Mortgage Loan will have a first Payment
Date occurring after April 1, 2005; (v) the latest maturity date of any Group
III Subsequent Mortgage Loan will be no later than March 1, 2035; (vi) none of
the Group III Subsequent Mortgage Loans will be a buydown loan; (vii) such
Mortgage Loan will have a credit score of not less than 613; (viii) such
Mortgage Loan will have a Mortgage Rate as of the applicable Subsequent Cut-off
Date ranging from approximately 2.375% per annum to approximately 8.250% per
annum; (ix) none of the Group III Subsequent Mortgage loans will be a New York
State "high cost" loan; and (x) such Group III Subsequent Mortgage Loan shall
have been underwritten in accordance with the criteria set forth under "The
Mortgage Pool--Underwriting Standards" in the Prospectus Supplement.

         (d)      In addition, following the purchase of any Group III
Subsequent Mortgage Loan by the Trust, the applicable Group III Subsequent
Mortgage Loans will as of the related Subsequent Cut-off Date: (i) have a
weighted average Mortgage Rate ranging from 3.484% to 3.584% per annum; (ii)
consist of Mortgage Loans with prepayment charges representing no less than
approximately 3.51% of the Pool Balance; (iii) have a weighted average credit
score ranging from 706 to 712; (iv) have no more than 40.12% of such Mortgage
Loans concentrated in the state of California; (v) have no less than 88.79% of
the mortgaged properties securing Group III Loans be owner occupied; (vi) have
no less than 88.90% of the mortgaged properties securing Group III Mortgage
Loans be single family detached and de minimis planned unit developments; (vii)
have no more than 29.60% of the Group III Loans be cash-out refinance; (viii)
not have any of such group of Group III Subsequent Mortgage Loans with a
loan-to-value ratio greater than 80% not be covered by a Primary Insurance
Policy or the Radian Lender-Paid PMI Policy; (ix) have no more than 89.60% of
the Group III Loans be Mortgage Loans with an interest only period; and (x)
together with the Group III Mortgage Loans already included in the trust, have
no more than 1.10% of such Mortgage Loans (by aggregate Stated Principal Balance
as of the Subsequent Cut-off Date) secured by mortgaged properties located in
any one zip code.

         Notwithstanding the foregoing, any Group III Subsequent Mortgage Loan
may be rejected by any Rating Agency if the inclusion of any such Group III
Subsequent Mortgage Loan would adversely affect the ratings of the Notes. In
addition, minor variances from the


                                       15
<PAGE>


characteristics stated above will be permitted with the consent of the Rating
Agencies so long as there are compensating factors, and the consent of the
Rating Agencies to any group of Group III Subsequent Mortgage Loans shall mean
that the representations and warranties set forth in subsections (c) and (d)
above are accurate; provided, however, that the information furnished to the
Rating Agencies in respect of such Group III Subsequent Mortgage Loans is true
and correct in all material respects. At least one (1) Business Day prior to the
applicable Group IV Subsequent Transfer Date, each Rating Agency shall notify
the Indenture Trustee as to which Group IV Subsequent Mortgage Loans, if any,
shall not be included in the transfer on such Group IV Subsequent Transfer Date;
provided, however, that the RMBS Master Servicer, in its capacity as Originator,
shall have delivered to each Rating Agency at least three (3) Business Days
prior to such Group IV Subsequent Transfer Date a computer file acceptable to
each Rating Agency describing the characteristics specified in subsections (c)
and (d) above.

         Section 2.08 Conveyance of the Group IV Subsequent Mortgage Loans. (a)
Subject to the conditions set forth in paragraph (b) below and in consideration
of the Indenture Trustee's delivery on the applicable Subsequent Transfer Dates,
to or upon the written order of the Depositor, of all or a portion of the
balance of funds in the Group IV Pre-Funding Account, the Depositor shall, on
the Subsequent Transfer Date, sell, transfer, assign, set over and convey
without recourse to the Trust Estate, but subject to the other terms and
provisions of this Agreement, all of the right, title and interest of the
Depositor in and to (i) the related Group IV Subsequent Mortgage Loans
identified on the Mortgage Loan Schedule attached to the related Group IV
Subsequent Transfer Instrument delivered by the Depositor on the Subsequent
Transfer Date, (ii) all interest accruing thereon on and after the Subsequent
Cut-off Date (with respect to the Group IV Subsequent Mortgage Loans) and all
collections in respect of interest and principal due after the Subsequent
Cut-off Date and (iii) all items with respect to such Group IV Subsequent
Mortgage Loans to be delivered pursuant to Section 2.03 and the other items in
the related Mortgage Files; provided, however, that the Depositor reserves and
retains all right, title and interest in and to principal received and interest
accruing on the Group IV Subsequent Mortgage Loans prior to the related
Subsequent Cut-off Date. The transfer to the Indenture Trustee for deposit in
the Trust Estate by the Depositor of the Group IV Subsequent Mortgage Loans
identified on the Mortgage Loan Schedule shall be absolute and is intended by
the Depositor, the RMBS Master Servicer, the Indenture Trustee and the
Noteholders to constitute and to be treated as a sale of the Group IV Subsequent
Mortgage Loans by the Depositor to the Trust Estate. The related Mortgage File
for each Group IV Subsequent Mortgage Loan shall be delivered to the Custodian
at least three (3) Business Days prior to the related Subsequent Transfer Date.

         The purchase price paid by the Indenture Trustee from amounts released
from the Group IV Pre-Funding Account shall be one-hundred percent (100%) of the
aggregate Stated Principal Balance of the Group IV Subsequent Mortgage Loans so
transferred (as identified on the Mortgage Loan Schedule provided by the
Depositor).

         (b)      The Depositor shall transfer to the Indenture Trustee for
deposit in the Trust Estate the applicable Group IV Subsequent Mortgage Loans
and the other property and rights related thereto as described in paragraph (a)
above, and the Indenture Trustee shall release such


                                       16
<PAGE>


applicable funds from the Group IV Pre-Funding Account, only upon the
satisfaction of each of the following conditions on or prior to the Subsequent
Transfer Date:

                  (i)      the Depositor shall have provided the Indenture
         Trustee and the Rating Agencies with a timely Addition Notice and shall
         have provided any information reasonably requested by the Indenture
         Trustee with respect to the Group IV Subsequent Mortgage Loans;

                  (ii)     the Depositor shall have delivered to the Indenture
         Trustee a duly executed Group I Subsequent Transfer Instrument (which
         the Indenture Trustee is hereby authorized to execute), which shall
         include a Mortgage Loan Schedule listing the Group IV Subsequent
         Mortgage Loans, and the RMBS Master Servicer, in its capacity as
         Originator, shall have delivered a computer file containing such
         Mortgage Loan Schedule to the Indenture Trustee at least three (3)
         Business Days prior to the related Group IV Subsequent Transfer Date;

                  (iii)    as of each Group IV Subsequent Transfer Date, as
         evidenced by delivery of the related Group IV Subsequent Transfer
         Instrument, substantially in the form of Exhibit G, the Depositor shall
         not be insolvent nor shall it have been rendered insolvent by such
         transfer nor shall it be aware of any pending insolvency;

                  (iv)     such sale and transfer shall not result in a material
         adverse tax consequence to the Trust Estate or to the Noteholders;

                  (v)      the Funding Period shall not have terminated;

                  (vi)     the Depositor shall not have selected the applicable
         Group IV Subsequent Mortgage Loans in a manner that it believed to be
         adverse to the interests of the Noteholders;

                  (vii)    the Depositor shall have delivered to the Indenture
         Trustee the related Group IV Subsequent Transfer Instrument confirming
         the satisfaction of all the conditions specified in this Section 2.08
         and, pursuant to such Group IV Subsequent Transfer Instrument, assigned
         to the Indenture Trustee without recourse for the benefit of the
         Noteholders all the right, title and interest of the Depositor, in, to
         and under the applicable Group IV Subsequent Mortgage Loan Purchase
         Agreement, to the extent of the related Group IV Subsequent Mortgage
         Loans; and

                  (viii)   the Depositor shall have delivered to the Indenture
         Trustee an Opinion of Counsel addressed to the Indenture Trustee and
         the Rating Agencies with respect to the transfer of the applicable
         Group IV Subsequent Mortgage Loans substantially in the form of the
         Opinion of Counsel delivered to the Indenture Trustee on the Closing
         Date regarding the validity of the conveyance and the true sale of such
         Group IV Subsequent Mortgage Loans.

         (c)      The obligation of the Trust Estate to purchase a Group IV
Subsequent Mortgage Loan on any Subsequent Transfer Date is subject to the
satisfaction of the conditions set forth in


                                       17
<PAGE>


the immediately following paragraph and the accuracy of the following
representations and warranties with respect to each such Group IV Subsequent
Mortgage Loan determined as of the applicable Subsequent Cut-off Date: (i) such
Mortgage Loan may not be 30 or more days delinquent as of the last day of the
month preceding the Subsequent Cut-off Date; (ii) the original term to stated
maturity of such Mortgage Loan will be 360 months; (iii) each Group IV
Subsequent Mortgage Loan must be an adjustable-rate Mortgage Loan with a first
lien on the related mortgaged property; (iv) no Group IV Subsequent Mortgage
Loan will have a first Payment Date occurring after April 1, 2035; (v) the
latest maturity date of any Group IV Subsequent Mortgage Loan will be no later
than March 1, 2035; (vi) none of the Group IV Subsequent Mortgage Loans will be
a buydown loan; (vii) such Mortgage Loan will have a credit score of not less
than 464; (viii) such Mortgage Loan will have a Mortgage Rate as of the
applicable Subsequent Cut-off Date ranging from approximately 3.500% per annum
to approximately 8.875% per annum; (ix) none of the Group IV Subsequent Mortgage
loans will be a New York State "high cost" loan; and (x) such Group IV
Subsequent Mortgage Loan shall have been underwritten in accordance with the
criteria set forth under "The Mortgage Pool--Underwriting Standards" in the
Prospectus Supplement.

         (d)      In addition, following the purchase of any Group IV Subsequent
Mortgage Loan by the Trust, the applicable Group IV Subsequent Mortgage Loans
will as of the related Subsequent Cut-off Date: (i) have a weighted average
Mortgage Rate ranging from 5.681% to 5.781% per annum; (ii) consist of Mortgage
Loans with prepayment charges representing no less than approximately 5.69% of
the Pool Balance; (iii) have a weighted average credit score ranging from 704 to
711; (iv) have no more than 14.39% of such Mortgage Loans concentrated in the
state of California; (v) have no less than 72.223% of the mortgaged properties
securing Group IV Loans be owner occupied; (vi) have no less than 80.17% of the
mortgaged properties securing Group IV Mortgage Loans be single family detached
and de minimis planned unit developments; (vii) have no more than 24.07% of the
Group IV Loans be cash-out refinance; (viii) not have any of such group of Group
IV Subsequent Mortgage Loans with a loan-to-value ratio greater than 80% not be
covered by a Primary Insurance Policy or the Radian Lender-Paid PMI Policy; (ix)
have no more than 81.02% of the Group IV Loans be Mortgage Loans with an
interest only period; and (x) together with the Group IV Mortgage Loans already
included in the trust, have no more than 0.53% of such Mortgage Loans (by
aggregate Stated Principal Balance as of the Subsequent Cut-off Date) secured by
mortgaged properties located in any one zip code.

         Notwithstanding the foregoing, any Group IV Subsequent Mortgage Loan
may be rejected by any Rating Agency if the inclusion of any such Group IV
Subsequent Mortgage Loan would adversely affect the ratings of the Notes. In
addition, minor variances from the characteristics stated above will be
permitted with the consent of the Rating Agencies so long as there are
compensating factors, and the consent of the Rating Agencies to any group of
Group IV Subsequent Mortgage Loans shall mean that the representations and
warranties set forth in subsections (c) and (d) above are accurate; provided,
however, that the information furnished to the Rating Agencies in respect of
such Group IV Subsequent Mortgage Loans is true and correct in all material
respects. At least one (1) Business Day prior to the applicable Group IV
Subsequent Transfer Date, each Rating Agency shall notify the Indenture Trustee
as to which Group IV Subsequent Mortgage Loans, if any, shall not be included in
the transfer on such Group IV Subsequent Transfer Date; provided, however, that
the RMBS Master Servicer, in its


                                       18
<PAGE>


capacity as Originator, shall have delivered to each Rating Agency at least
three (3) Business Days prior to such Group IV Subsequent Transfer Date a
computer file acceptable to each Rating Agency describing the characteristics
specified in subsections (c) and (d) above.

         Section 2.09 Conveyance of the Group V Subsequent Mortgage Loans. (a)
Subject to the conditions set forth in paragraph (b) below and in consideration
of the Indenture Trustee's delivery on the applicable Subsequent Transfer Dates,
to or upon the written order of the Depositor, of all or a portion of the
balance of funds in the Group V Pre-Funding Account, the Depositor shall, on the
Subsequent Transfer Date, sell, transfer, assign, set over and convey without
recourse to the Trust Estate, but subject to the other terms and provisions of
this Agreement, all of the right, title and interest of the Depositor in and to
(i) the related Group V Subsequent Mortgage Loans identified on the Mortgage
Loan Schedule attached to the related Group V Subsequent Transfer Instrument
delivered by the Depositor on the Subsequent Transfer Date, (ii) all interest
accruing thereon on and after the Subsequent Cut-off Date (with respect to the
Group V Subsequent Mortgage Loans) and all collections in respect of interest
and principal due after the Subsequent Cut-off Date and (iii) all items with
respect to such Group V Subsequent Mortgage Loans to be delivered pursuant to
Section 2.03 and the other items in the related Mortgage Files; provided,
however, that the Depositor reserves and retains all right, title and interest
in and to principal received and interest accruing on the Group V Subsequent
Mortgage Loans prior to the related Subsequent Cut-off Date. The transfer to the
Indenture Trustee for deposit in the Trust Estate by the Depositor of the Group
V Subsequent Mortgage Loans identified on the Mortgage Loan Schedule shall be
absolute and is intended by the Depositor, the RMBS Master Servicer, the
Indenture Trustee and the Noteholders to constitute and to be treated as a sale
of the Group V Subsequent Mortgage Loans by the Depositor to the Trust Estate.
The related Mortgage File for each Group V Subsequent Mortgage Loan shall be
delivered to the Custodian at least three (3) Business Days prior to the related
Subsequent Transfer Date.

         The purchase price paid by the Indenture Trustee from amounts released
from the Group V Pre-Funding Account shall be one-hundred percent (100%) of the
aggregate Stated Principal Balance of the Group V Subsequent Mortgage Loans so
transferred (as identified on the Mortgage Loan Schedule provided by the
Depositor).

         (b)      The Depositor shall transfer to the Indenture Trustee for
deposit in the Trust Estate the applicable Group V Subsequent Mortgage Loans and
the other property and rights related thereto as described in paragraph (a)
above, and the Indenture Trustee shall release such applicable funds from the
Group V Pre-Funding Account, only upon the satisfaction of each of the following
conditions on or prior to the Subsequent Transfer Date:

                  (i)      the Depositor shall have provided the Indenture
         Trustee and the Rating Agencies with a timely Addition Notice and shall
         have provided any information reasonably requested by the Indenture
         Trustee with respect to the Group V Subsequent Mortgage Loans;

                  (ii)     the Depositor shall have delivered to the Indenture
         Trustee a duly executed Group I Subsequent Transfer Instrument (which
         the Indenture Trustee is hereby


                                       19
<PAGE>


         authorized to execute), which shall include a Mortgage Loan Schedule
         listing the Group V Subsequent Mortgage Loans, and the RMBS Master
         Servicer, in its capacity as Originator, shall have delivered a
         computer file containing such Mortgage Loan Schedule to the Indenture
         Trustee at least three (3) Business Days prior to the related Group V
         Subsequent Transfer Date; (iii) as of each Group V Subsequent Transfer
         Date, as evidenced by delivery of the related Group V Subsequent
         Transfer Instrument, substantially in the form of Exhibit G, the
         Depositor shall not be insolvent nor shall it have been rendered
         insolvent by such transfer nor shall it be aware of any pending
         insolvency;

                  (iv)     such sale and transfer shall not result in a material
         adverse tax consequence to the Trust Estate or to the Noteholders;

                  (v)      the Funding Period shall not have terminated;

                  (vi)     the Depositor shall not have selected the applicable
         Group V Subsequent Mortgage Loans in a manner that it believed to be
         adverse to the interests of the Noteholders;

                  (vii)    the Depositor shall have delivered to the Indenture
         Trustee the related Group V Subsequent Transfer Instrument confirming
         the satisfaction of all the conditions specified in this Section 2.09
         and, pursuant to such Group V Subsequent Transfer Instrument, assigned
         to the Indenture Trustee without recourse for the benefit of the
         Noteholders all the right, title and interest of the Depositor, in, to
         and under the applicable Group V Subsequent Mortgage Loan Purchase
         Agreement, to the extent of the related Group V Subsequent Mortgage
         Loans; and

                  (viii)   the Depositor shall have delivered to the Indenture
         Trustee an Opinion of Counsel addressed to the Indenture Trustee and
         the Rating Agencies with respect to the transfer of the applicable
         Group V Subsequent Mortgage Loans substantially in the form of the
         Opinion of Counsel delivered to the Indenture Trustee on the Closing
         Date regarding the validity of the conveyance and the true sale of such
         Group V Subsequent Mortgage Loans.

         (c)      The obligation of the Trust Estate to purchase a Group V
Subsequent Mortgage Loan on any Subsequent Transfer Date is subject to the
satisfaction of the conditions set forth in the immediately following paragraph
and the accuracy of the following representations and warranties with respect to
each such Group V Subsequent Mortgage Loan determined as of the applicable
Subsequent Cut-off Date: (i) such Mortgage Loan may not be 30 or more days
delinquent as of the last day of the month preceding the Subsequent Cut-off
Date; (ii) the original term to stated maturity of such Mortgage Loan will be
360 months; (iii) each Group V Subsequent Mortgage Loan must be an
adjustable-rate Mortgage Loan with a first lien on the related mortgaged
property; (iv) no Group V Subsequent Mortgage Loan will have a first Payment
Date occurring after April 1, 2035; (v) the latest maturity date of any Group V
Subsequent Mortgage Loan will be no later than March 1, 2035; (vi) none of the
Group V


                                       20
<PAGE>


Subsequent Mortgage Loans will be a buydown loan; (vii) such Mortgage Loan will
have a credit score of not less than 556; (viii) such Mortgage Loan will have a
Mortgage Rate as of the applicable Subsequent Cut-off Date ranging from
approximately 4.000% per annum to approximately 7.875% per annum; (ix) none of
the Group V Subsequent Mortgage loans will be a New York State "high cost" loan;
and (x) such Group V Subsequent Mortgage Loan shall have been underwritten in
accordance with the criteria set forth under "The Mortgage Pool--Underwriting
Standards" in the Prospectus Supplement.

         (d)      In addition, following the purchase of any Group V Subsequent
Mortgage Loan by the Trust, the applicable Group V Subsequent Mortgage Loans
will as of the related Subsequent Cut-off Date: (i) have a weighted average
Mortgage Rate ranging from 5.451% to 5.551% per annum; (ii) consist of Mortgage
Loans with prepayment charges representing no less than approximately 4.38% of
the Pool Balance; (iii) have a weighted average credit score ranging from 710 to
716; (iv) have no more than 37.23% of such Mortgage Loans concentrated in the
state of California; (v) have no less than 90.69% of the mortgaged properties
securing Group V Loans be owner occupied; (vi) have no less than 87.34% of the
mortgaged properties securing Group V Mortgage Loans be single family detached
and de minimis planned unit developments; (vii) have no more than 32.14% of the
Group V Loans be cash-out refinance; (viii) not have any of such group of Group
V Subsequent Mortgage Loans with a loan-to-value ratio greater than 80% not be
covered by a Primary Insurance Policy or the Radian Lender-Paid PMI Policy; (ix)
have no more than 81.28% of the Group V Loans be Mortgage Loans with an interest
only period; and (x) together with the Group V Mortgage Loans already included
in the trust, have no more than 1.42% of such Mortgage Loans (by aggregate
Stated Principal Balance as of the Subsequent Cut-off Date) secured by mortgaged
properties located in any one zip code.

         Notwithstanding the foregoing, any Group V Subsequent Mortgage Loan may
be rejected by any Rating Agency if the inclusion of any such Group V Subsequent
Mortgage Loan would adversely affect the ratings of the Notes. In addition,
minor variances from the characteristics stated above will be permitted with the
consent of the Rating Agencies so long as there are compensating factors, and
the consent of the Rating Agencies to any group of Group V Subsequent Mortgage
Loans shall mean that the representations and warranties set forth in
subsections (c) and (d) above are accurate; provided, however, that the
information furnished to the Rating Agencies in respect of such Group V
Subsequent Mortgage Loans is true and correct in all material respects. At least
one (1) Business Day prior to the applicable Group V Subsequent Transfer Date,
each Rating Agency shall notify the Indenture Trustee as to which Group V
Subsequent Mortgage Loans, if any, shall not be included in the transfer on such
Group V Subsequent Transfer Date; provided, however, that the RMBS Master
Servicer, in its capacity as Originator, shall have delivered to each Rating
Agency at least three (3) Business Days prior to such Group V Subsequent
Transfer Date a computer file acceptable to each Rating Agency describing the
characteristics specified in subsections (c) and (d) above.

         Section 2.10 Conveyance of the Group VI Subsequent Mortgage Loans. (a)
Subject to the conditions set forth in paragraph (b) below and in consideration
of the Indenture Trustee's delivery on the applicable Subsequent Transfer Dates,
to or upon the written order of the Depositor, of all or a portion of the
balance of funds in the Group VI Pre-Funding Account, the Depositor shall, on
the Subsequent Transfer Date, sell, transfer, assign, set over and convey


                                       21
<PAGE>


without recourse to the Trust Estate, but subject to the other terms and
provisions of this Agreement, all of the right, title and interest of the
Depositor in and to (i) the related Group VI Subsequent Mortgage Loans
identified on the Mortgage Loan Schedule attached to the related Group VI
Subsequent Transfer Instrument delivered by the Depositor on the Subsequent
Transfer Date, (ii) all interest accruing thereon on and after the Subsequent
Cut-off Date (with respect to the Group VI Subsequent Mortgage Loans) and all
collections in respect of interest and principal due after the Subsequent
Cut-off Date and (iii) all items with respect to such Group VI Subsequent
Mortgage Loans to be delivered pursuant to Section 2.03 and the other items in
the related Mortgage Files; provided, however, that the Depositor reserves and
retains all right, title and interest in and to principal received and interest
accruing on the Group VI Subsequent Mortgage Loans prior to the related
Subsequent Cut-off Date. The transfer to the Indenture Trustee for deposit in
the Trust Estate by the Depositor of the Group VI Subsequent Mortgage Loans
identified on the Mortgage Loan Schedule shall be absolute and is intended by
the Depositor, the RMBS Master Servicer, the Indenture Trustee and the
Noteholders to constitute and to be treated as a sale of the Group VI Subsequent
Mortgage Loans by the Depositor to the Trust Estate. The related Mortgage File
for each Group VI Subsequent Mortgage Loan shall be delivered to the Custodian
at least three (3) Business Days prior to the related Subsequent Transfer Date.

         The purchase price paid by the Indenture Trustee from amounts released
from the Group V Pre-Funding Account shall be one-hundred percent (100%) of the
aggregate Stated Principal Balance of the Group VI Subsequent Mortgage Loans so
transferred (as identified on the Mortgage Loan Schedule provided by the
Depositor).

         (b)      The Depositor shall transfer to the Indenture Trustee for
deposit in the Trust Estate the applicable Group VI Subsequent Mortgage Loans
and the other property and rights related thereto as described in paragraph (a)
above, and the Indenture Trustee shall release such applicable funds from the
Group VI Pre-Funding Account, only upon the satisfaction of each of the
following conditions on or prior to the Subsequent Transfer Date:

                  (i)      the Depositor shall have provided the Indenture
         Trustee and the Rating Agencies with a timely Addition Notice and shall
         have provided any information reasonably requested by the Indenture
         Trustee with respect to the Group VI Subsequent Mortgage Loans;

                  (ii)     the Depositor shall have delivered to the Indenture
         Trustee a duly executed Group I Subsequent Transfer Instrument (which
         the Indenture Trustee is hereby authorized to execute), which shall
         include a Mortgage Loan Schedule listing the Group VI Subsequent
         Mortgage Loans, and the RMBS Master Servicer, in its capacity as
         Originator, shall have delivered a computer file containing such
         Mortgage Loan Schedule to the Indenture Trustee at least three (3)
         Business Days prior to the related Group VI Subsequent Transfer Date;

                  (iii)    as of each Group VI Subsequent Transfer Date, as
         evidenced by delivery of the related Group VI Subsequent Transfer
         Instrument, substantially in the form of


                                       22
<PAGE>


         Exhibit G, the Depositor shall not be insolvent nor shall it have been
         rendered insolvent by such transfer nor shall it be aware of any
         pending insolvency;

                  (iv)     such sale and transfer shall not result in a material
         adverse tax consequence to the Trust Estate or to the Noteholders;

                  (v)      the Funding Period shall not have terminated;

                  (vi)     the Depositor shall not have selected the applicable
         Group VI Subsequent Mortgage Loans in a manner that it believed to be
         adverse to the interests of the Noteholders;

                  (vii)    the Depositor shall have delivered to the Indenture
         Trustee the related Group VI Subsequent Transfer Instrument confirming
         the satisfaction of all the conditions specified in this Section 2.10
         and, pursuant to such Group VI Subsequent Transfer Instrument, assigned
         to the Indenture Trustee without recourse for the benefit of the
         Noteholders all the right, title and interest of the Depositor, in, to
         and under the applicable Group VI Subsequent Mortgage Loan Purchase
         Agreement, to the extent of the related Group VI Subsequent Mortgage
         Loans; and

                  (viii)   the Depositor shall have delivered to the Indenture
         Trustee an Opinion of Counsel addressed to the Indenture Trustee and
         the Rating Agencies with respect to the transfer of the applicable
         Group VI Subsequent Mortgage Loans substantially in the form of the
         Opinion of Counsel delivered to the Indenture Trustee on the Closing
         Date regarding the validity of the conveyance and the true sale of such
         Group VI Subsequent Mortgage Loans.

         (c)      The obligation of the Trust Estate to purchase a Group VI
Subsequent Mortgage Loan on any Subsequent Transfer Date is subject to the
satisfaction of the conditions set forth in the immediately following paragraph
and the accuracy of the following representations and warranties with respect to
each such Group VI Subsequent Mortgage Loan determined as of the applicable
Subsequent Cut-off Date: (i) such Mortgage Loan may not be 30 or more days
delinquent as of the last day of the month preceding the Subsequent Cut-off
Date; (ii) the original term to stated maturity of such Mortgage Loan will be
346 months; (iii) each Group VI Subsequent Mortgage Loan must be fixed rate
Mortgage Loan with a first lien on the related mortgaged property; (iv) no Group
VI Subsequent Mortgage Loan will have a first Payment Date occurring after April
1, 2035; (v) the latest maturity date of any Group VI Subsequent Mortgage Loan
will be no later than March 1, 2035; (vi) none of the Group VI Subsequent
Mortgage Loans will be a buydown loan; (vii) such Mortgage Loan will have a
credit score of not less than 453; (viii) such Mortgage Loan will have a
Mortgage Rate as of the applicable Subsequent Cut-off Date ranging from
approximately 4.500% per annum to approximately 9.000% per annum; (ix) none of
the Group VI Subsequent Mortgage loans will be a New York State "high cost"
loan; and (x) such Group VI Subsequent Mortgage Loan shall have been
underwritten in accordance with the criteria set forth under "The Mortgage
Pool--Underwriting Standards" in the Prospectus Supplement.


                                       23
<PAGE>


         (d)      In addition, following the purchase of any Group VI Subsequent
Mortgage Loan by the Trust, the applicable Group VI Subsequent Mortgage Loans
will as of the related Subsequent Cut-off Date: (i) have a weighted average
Mortgage Rate ranging from 6.617% to 6.717% per annum; (ii) consist of Mortgage
Loans with prepayment charges representing no less than approximately 0.00% of
the Pool Balance; (iii) have a weighted average credit score ranging from 671 to
677; (iv) have no more than 6.61% of such Mortgage Loans concentrated in the
state of California; (v) have no less than 70.76% of the mortgaged properties
securing Group VI Loans be owner occupied; (vi) have no less than 78.44% of the
mortgaged properties securing Group VI Mortgage Loans be single family detached
and de minimis planned unit developments; (vii) have no more than 40.656% of the
Group VI Loans be cash-out refinance; (viii) not have any of such group of Group
VI Subsequent Mortgage Loans with a loan-to-value ratio greater than 80% not be
covered by a Primary Insurance Policy or the Radian Lender-Paid PMI Policy; (ix)
have no more than 12.79% of the Group VI Loans be Mortgage Loans with an
interest only period; and (x) together with the Group VI Mortgage Loans already
included in the trust, have no more than 0.41% of such Mortgage Loans (by
aggregate Stated Principal Balance as of the Subsequent Cut-off Date) secured by
mortgaged properties located in any one zip code.

         Notwithstanding the foregoing, any Group VI Subsequent Mortgage Loan
may be rejected by any Rating Agency if the inclusion of any such Group VI
Subsequent Mortgage Loan would adversely affect the ratings of the Notes. In
addition, minor variances from the characteristics stated above will be
permitted with the consent of the Rating Agencies so long as there are
compensating factors, and the consent of the Rating Agencies to any group of
Group VI Subsequent Mortgage Loans shall mean that the representations and
warranties set forth in subsections (c) and (d) above are accurate; provided,
however, that the information furnished to the Rating Agencies in respect of
such Group VI Subsequent Mortgage Loans is true and correct in all material
respects. At least one (1) Business Day prior to the applicable Group VI
Subsequent Transfer Date, each Rating Agency shall notify the Indenture Trustee
as to which Group VI Subsequent Mortgage Loans, if any, shall not be included in
the transfer on such Group VI Subsequent Transfer Date; provided, however, that
the RMBS Master Servicer, in its capacity as Originator, shall have delivered to
each Rating Agency at least three (3) Business Days prior to such Group VI
Subsequent Transfer Date a computer file acceptable to each Rating Agency
describing the characteristics specified in subsections (c) and (d) above.

         Section 2.11 Conveyance of the Group VII Subsequent HELOC Mortgage
Loans. (a) Subject to the conditions set forth in paragraph (b) below and in
consideration of the Indenture Trustee's delivery on the applicable Subsequent
Transfer Dates, to or upon the written order of the Depositor, of all or a
portion of the balance of funds in the Group VII Pre-Funding Account, the
Depositor shall, on the Subsequent Transfer Date, sell, transfer, assign, set
over and convey without recourse to the Trust Estate, but subject to the other
terms and provisions of this Agreement, all of the right, title and interest of
the Depositor in and to (i) the related Group VII Subsequent Mortgage Loans
(including all Additional Balances resulting from Draws made pursuant to the
related Subsequent HELOC Mortgage Loan prior to the termination of the Trust)
identified on the Mortgage Loan Schedule attached to the related Group VII
Subsequent Transfer Instrument delivered by the Depositor on the Subsequent
Transfer Date, (ii) all interest accruing thereon on and after the Subsequent
Cut-off Date (with respect to the Group VII Subsequent Mortgage Loans) and all
collections in respect of interest and principal due after the Subsequent


                                       24
<PAGE>


Cut-off Date and (iii) all items with respect to such Group VII Subsequent
Mortgage Loans to be delivered pursuant to Section 2.03 and the other items in
the related Mortgage Files; provided, however, that the Depositor reserves and
retains all right, title and interest in and to principal received and interest
accruing on the Group VII Subsequent Mortgage Loans prior to the related
Subsequent Cut-off Date. The transfer to the Indenture Trustee for deposit in
the Trust Estate by the Depositor of the Group VII Subsequent Mortgage Loans
identified on the Mortgage Loan Schedule shall be absolute and is intended by
the Depositor, the HELOC Master Servicer, the Indenture Trustee and the
Noteholders to constitute and to be treated as a sale of the Group VII
Subsequent Mortgage Loans by the Depositor to the Trust Estate. The related
Mortgage File for each Group VII Subsequent Mortgage Loan shall be delivered to
the Custodian at least three (3) Business Days prior to the related Subsequent
Transfer Date.

         The purchase price paid by the Indenture Trustee from amounts released
from the Group VII Pre-Funding Account shall be one-hundred percent (100%) of
the aggregate Stated Principal Balance of the Group VII Subsequent Mortgage
Loans so transferred (as identified on the Mortgage Loan Schedule provided by
the Depositor).

         (b)      The Depositor shall transfer to the Indenture Trustee for
deposit in the Trust Estate the applicable Group VII Subsequent Mortgage Loans
and the other property and rights related thereto as described in paragraph (a)
above, and the Indenture Trustee shall release such applicable funds from the
Group VII Pre-Funding Account, only upon the satisfaction of each of the
following conditions on or prior to the Subsequent Transfer Date:

                  (i)      the Depositor shall have provided the Indenture
         Trustee, the Insurer and the Rating Agencies with a timely Addition
         Notice and shall have provided any information reasonably requested by
         the Indenture Trustee with respect to the Group VII Subsequent Mortgage
         Loans;

                  (ii)     the Depositor shall have delivered to the Indenture
         Trustee a duly executed Group VII Subsequent Transfer Instrument (which
         the Indenture Trustee is hereby authorized to execute), which shall
         include a Mortgage Loan Schedule listing the Group VII Subsequent
         Mortgage Loans and shall have delivered or cause to be delivered a
         computer file containing such Mortgage Loan Schedule to the Indenture
         Trustee at least three (3) Business Days prior to the related Group VII
         Subsequent Transfer Date;

                  (iii)    as of each Group VII Subsequent Transfer Date, as
         evidenced by delivery of the related Group VII Subsequent Transfer
         Instrument, substantially in the form of Exhibit G, the Depositor shall
         not be insolvent nor shall it have been rendered insolvent by such
         transfer nor shall it be aware of any pending insolvency;

                  (iv)     such sale and transfer shall not result in a material
         adverse tax consequence to the Trust Estate or to the Noteholders;

                  (v)      the Funding Period shall not have terminated;


                                       25
<PAGE>


                  (vi)     the Depositor shall not have selected the applicable
         Group VII Subsequent Mortgage Loans in a manner that it believed to be
         adverse to the interests of the Noteholders or the Insurer;

                  (vii)    the Depositor shall have delivered to the Indenture
         Trustee the related Group VII Subsequent Transfer Instrument confirming
         the satisfaction of all the conditions specified in this Section 2.11
         and, pursuant to such Group VII Subsequent Transfer Instrument,
         assigned to the Indenture Trustee without recourse for the benefit of
         the Class VII-A Noteholders and the Insurer all the right, title and
         interest of the Depositor, in, to and under the applicable Group VII
         Subsequent Mortgage Loan Purchase Agreement, to the extent of the
         related Group VII Subsequent Mortgage Loans; and

                  (viii)   the Depositor shall have delivered to the Indenture
         Trustee an Opinion of Counsel addressed to the Indenture Trustee, the
         Insurer and the Rating Agencies with respect to the transfer of the
         applicable Group VII Subsequent Mortgage Loans substantially in the
         form of the Opinion of Counsel delivered to the Indenture Trustee on
         the Closing Date regarding the validity of the conveyance and the true
         sale of such Group VII Subsequent Mortgage Loans.

         (c)      The obligation of the Trust Estate to purchase a Group VII
Subsequent Mortgage Loan on any Subsequent Transfer Date is subject to the
satisfaction of the conditions set forth in the immediately following paragraph
and the accuracy of the following representations and warranties with respect to
each such Group VII Subsequent Mortgage Loan determined as of the applicable
Subsequent Cut-off Date: (i) such HELOC Mortgage Loan may not be 30 or more days
delinquent as of the Subsequent Transfer Date; (ii) the remaining term to stated
maturity of such HELOC Mortgage Loans will not exceed 300 months; (iii) such
HELOC Mortgage Loan will be secured by a mortgage in a first or second lien
position; (iv) such HELOC Mortgage Loan will have a fully-indexed margin between
0.000% and 7.000%; (v) each HELOC will have a credit limit less than $550,000;
(vi) each HELOC Mortgage Loan will have a combined loan-to-value ratio less than
or equal to 101%; (vii) each HELOC Mortgage Loan will have a credit limit
utilization rate less than or equal to 101%; (vii) each HELOC Mortgage Loan will
have a credit score greater than or equal to 590; (ix) no HELOC Mortgage Loan
will provide for negative amortization; and (x) such HELOC Mortgage Loan shall
have been underwritten substantially in accordance with the criteria set forth
under "Description of the Mortgage Pool--Underwriting Standards" in the
Prospectus.

         (d)      In addition, following the purchase of any Group VII
Subsequent Mortgage Loan by the Trust, the applicable Group VII Subsequent
Mortgage Loans will as of the related Subsequent Cut-off Date: (i) a weighted
average fully-indexed margin of at least 1.10%; (ii) a weighted average combined
loan-to-value ration of no more than 95%; (iii) a weighted average credit score
of 715 or greater; (iv) at least 55% of the HELOC Mortgage Loans in the pool
will be secured by a single family residence; (v) at least 95% of the HELOC
Mortgage Loans in the pool will be secured by an owner-occupied property; (vi)
no more than 25% of the pool will have a loan purpose of cash-out refinance;
(vii) cash-out refinance loans will have a maximum weighted average CLTV of 85%;
(viii) no more than 15% of the pool will have a FICO score


                                       26
<PAGE>


less than 660; (ix) no less than 80% of the pool will have "full documentation";
(x) no more than 37% of the pool will be in the state of California; and (xi) no
more than 15% of the pool will be in any state other than California.

         Notwithstanding the foregoing, any Group VII Subsequent Mortgage Loan
may be rejected by any Rating Agency or the Insurer if the inclusion of any such
Group VII Subsequent Mortgage Loan would adversely affect the ratings of the
Class VII-A Notes without taking the Insurance Policy into account. Also, the
Insurer must approve the Group VII Subsequent Mortgage Loans, which consent
shall not be unreasonably withheld. In addition, minor variances from the
characteristics stated above will be permitted with the consent of the Rating
Agencies and the Insurer so long as there are compensating factors, and the
consent of the Rating Agencies and the Insurer to any group of Group VII
Subsequent Mortgage Loans shall mean that the representations and warranties set
forth in subsections (c) and (d) above are accurate; provided, however, that the
information furnished to the Rating Agencies and the Insurer in respect of such
Group VII Subsequent Mortgage Loans is true and correct in all material
respects. At least one (1) Business Day prior to the applicable Group VII
Subsequent Transfer Date, each Rating Agency or the Insurer shall notify the
Indenture Trustee as to which Group VII Subsequent Mortgage Loans, if any, shall
not be included in the transfer on such Group VII Subsequent Transfer Date;
provided, however, that the Depositor shall have delivered or caused to be
delivered to each Rating Agency and the Insurer at least three (3) Business Days
prior to such Group VII Subsequent Transfer Date a computer file acceptable to
each Rating Agency describing the characteristics specified in subsections (c)
and (d) above.










                                       27
<PAGE>


                                   ARTICLE III

                                    Covenants

         Section 3.01 Collection of Payments with respect to the Mortgage Loans
and HELOC Mortgage Loans. The Indenture Trustee shall establish and maintain an
Eligible Account (the "Payment Account") in which the Indenture Trustee shall
deposit, on the same day as it is received from the related Master Servicer,
each remittance received by the Indenture Trustee with respect to the Mortgage
Loans and HELOC Mortgage Loans. The Indenture Trustee shall make all payments of
principal of and interest on the Notes, subject to Section 3.03, and as provided
in Section 3.05 herein, from monies on deposit in the Payment Account.

         Section 3.02 Maintenance of Office or Agency. The Issuer will maintain
an office or agency where, subject to satisfaction of conditions set forth
herein, Notes may be surrendered for registration of transfer or exchange, and
where notices and demands to or upon the Issuer in respect of the Notes and this
Indenture may be served. The Issuer hereby initially appoints the Indenture
Trustee to serve as its agent for the foregoing purposes. If at any time the
Issuer shall fail to maintain any such office or agency or shall fail to furnish
the Indenture Trustee with the address thereof, such surrenders may be made at
the office of the Indenture Trustee located at 101 Barclay Street, 1E, New York,
New York 10286, Attention: Corporate Trust Window, American Home Mortgage
Securities LLC, Series 2004-4, and notices and demands may be made or served at
the Corporate Trust Office, and the Issuer hereby appoints the Indenture Trustee
as its agent to receive all such surrenders, notices and demands.

         Section 3.03 Money for Payments To Be Held in Trust; Paying Agent. (a)
As provided in Section 3.01, all payments of amounts due and payable with
respect to any Notes that are to be made from amounts withdrawn from the Payment
Account pursuant to Section 3.01 shall be made on behalf of the Issuer by the
Indenture Trustee or by the Paying Agent, and no amounts so withdrawn from the
Payment Account for payments of Notes shall be paid over to the Issuer except as
provided in this Section 3.03. The Issuer hereby appoints the Indenture Trustee
as its Paying Agent.

         The Issuer will cause each Paying Agent other than the Indenture
Trustee to execute and deliver to the Indenture Trustee an instrument in which
such Paying Agent shall agree with the Indenture Trustee (and if the Indenture
Trustee acts as Paying Agent it hereby so agrees), subject to the provisions of
this Section 3.03, that such Paying Agent will:

         (a)      hold all sums held by it for the payment of amounts due with
respect to the Notes in trust for the benefit of the Persons entitled thereto
until such sums shall be paid to such Persons or otherwise disposed of as herein
provided and pay such sums to such Persons as herein provided;

         (b)      give the Indenture Trustee notice of any default by the Issuer
and the Insurer of which it has actual knowledge in the making of any payment
required to be made with respect to the Notes;


                                       28
<PAGE>


         (c)      at any time during the continuance of any such default, upon
the written request of the Indenture Trustee, forthwith pay to the Indenture
Trustee all sums so held in trust by such Paying Agent;

         (d)      immediately resign as Paying Agent and forthwith pay to the
Indenture Trustee all sums held by it in trust for the payment of Notes if at
any time it ceases to meet the standards required to be met by a Paying Agent at
the time of its appointment;

         (e)      comply with all requirements of the Code with respect to the
withholding from any payments made by it on any Notes of any applicable
withholding taxes imposed thereon and with respect to any applicable reporting
requirements in connection therewith; and

         (f)      not commence a bankruptcy proceeding against the Issuer in
connection with this Indenture.

         The Issuer may at any time, for the purpose of obtaining the
satisfaction and discharge of this Indenture or for any other purpose, by Issuer
Request direct any Paying Agent to pay to the Indenture Trustee all sums held in
trust by such Paying Agent, such sums to be held by the Indenture Trustee upon
the same trusts as those upon which the sums were held by such Paying Agent; and
upon such payment by any Paying Agent to the Indenture Trustee, such Paying
Agent shall be released from all further liability with respect to such money.

         Subject to applicable laws with respect to escheat of funds, any money
held by the Indenture Trustee or any Paying Agent in trust for the payment of
any amount due with respect to any Note (other than amounts paid under the
Insurance Policy) and remaining unclaimed for one year after such amount has
become due and payable shall be discharged from such trust and be paid to the
Issuer on Issuer Request; and the Holder of such Note shall thereafter, as an
unsecured general creditor, look only to the Issuer for payment thereof (but
only to the extent of the amounts so paid to the Issuer), and all liability of
the Indenture Trustee or such Paying Agent with respect to such trust money
shall thereupon cease; provided, however, that the Indenture Trustee or such
Paying Agent, before being required to make any such repayment, shall at the
expense and direction of the Issuer cause to be published once, in an Authorized
Newspaper published in the English language, notice that such money remains
unclaimed and that, after a date specified therein which shall not be less than
30 days from the date of such publication, any unclaimed balance of such money
then remaining will be repaid to the Issuer. The Indenture Trustee, with the
written consent of the Insurer respecting the Class VII-A Notes, so long as the
Insurer is not in default under the Insurance Policy may also adopt and employ,
at the expense and direction of the Issuer, any other reasonable means of
notification of such repayment (including, but not limited to, mailing notice of
such repayment to Holders whose Notes have been called but have not been
surrendered for redemption or whose right to or interest in monies due and
payable but not claimed is determinable from the records of the Indenture
Trustee or of any Paying Agent, at the last address of record for each such
Holder).

         Section 3.04 Existence. The Issuer will keep in full effect its
existence, rights and franchises as a statutory trust under the laws of the
State of Delaware (unless it becomes, or any successor Issuer hereunder is or
becomes, organized under the laws of any other state or of the


                                       29
<PAGE>


United States of America, in which case the Issuer will keep in full effect its
existence, rights and franchises under the laws of such other jurisdiction) and
will obtain and preserve its qualification to do business in each jurisdiction
in which such qualification is or shall be necessary to protect the validity and
enforceability of this Indenture, the Notes, the Mortgage Loans and each other
instrument or agreement included in the Trust Estate.

         Section 3.05 Payment of Group I, Group II, Group III, Group IV and
Group V Available Funds.

         (a)      On each Payment Date from amounts on deposit in the Payment
Account in accordance with Section 8.02 hereof, the Indenture Trustee shall pay
to the Persons specified below, to the extent provided therein, the Available
Funds for such Payment Date.

         (b)      On each Payment Date, the Indenture Trustee shall withdraw
from the Payment Account the Group I, Group II, Group III, Group IV and Group V
Available Funds for such Payment Date and make the following payments in the
order of priority described below, in each case to the extent of the related
Group I, Group II, Group III, Group IV and Group V Available Funds remaining for
such Payment Date:

                  (i)      from the Group I, Group II, Group III, Group IV and
         Group V Available Funds, to the holders of the Class I-A, Class II-A,
         Class III-A, Class IV-A and Class V-A Notes, respectively, the related
         Accrued Note Interest for such Class for such Payment Date, plus any
         related Unpaid Interest Shortfall for such Payment Date;

                  (ii)     from the remaining Group I, Group II, Group III,
         Group IV and Group V Available Funds for such Payment Date, to the
         holders of the Class M-1 Notes, the related Accrued Note Interest for
         such class for such Payment Date;

                  (iii)    from the remaining Group I, Group II, Group III,
         Group IV and Group V Available Funds for such Payment Date, to the
         holders of the Class M-2 Notes, the related Accrued Note Interest for
         such Class for such Payment Date;

                  (iv)     from the remaining Group I, Group II, Group III,
         Group IV and Group V Available Funds for such Payment Date, to the
         holders of the Class M-3 Notes, the related Accrued Note Interest for
         such Class for such Payment Date; and;

                  (v)      any remainder (to the extent not included as a part
         of the related Principal Distribution Amount as provided in Section
         3.05(c) and (d) below) shall be included in the related Net Monthly
         Excess Cashflow and allocated as described in Section 3.05(e) below.

         (c)      On each Payment Date (a) prior to the related Stepdown Date or
(b) on which a related Trigger Event is in effect, the Holders of each Class of
I-A, Class II-A, Class III-A, Class IV-A, Class V-A and Class M Notes, shall be
entitled to receive payments in respect of principal to the extent of the
related Principal Distribution Amount in the following amounts and order of
priority:


                                       30
<PAGE>


                  (i)      concurrently, the Class A Principal Allocation
         Fraction of the related Principal Distribution Amount shall be
         allocated to the Class I-A, Class II-A, Class III-A, Class IV-A and
         Class V-A Notes, until the Note Principal Balances thereof have been
         reduced to zero, with any amounts payable to the Class I-A Notes
         payable to the Class I-A-1 Notes and Class I-A-2 Notes, pro rata, and
         with any amounts payable to the Class II-A Notes payable to the Class
         II-A-1 Notes and Class II-A-2 Notes, pro rata; provided, however, that
         if a Group II Sequential Trigger Event is in effect, amounts payable to
         the Class II-A Notes in respect of principal shall be paid first, to
         the Class II-A-1 Notes and second to the Class II-A-2 Notes, in each
         case until the related Note Principal Balance has been reduced to zero;

                  (ii)     concurrently, any remaining Principal Distribution
         Amount shall be distributed to the Class I-A, Class II-A, Class III-A,
         Class IV-A and Class V-A Notes on a pro rata basis, based on the Note
         Principal Balances thereof, until the Note Principal Balances thereof
         have been reduced to zero, with any amounts payable to the Class I-A
         Notes payable to the Class I-A-1 Notes and Class I-A-2 Notes, pro rata,
         and with any amounts payable to the Class II-A Notes payable to the
         Class II-A-1 Notes and Class II-A-2 Notes, pro rata; provided, however,
         that if a Group II Sequential Trigger Event is in effect, amounts
         payable to the Class II-A Notes in respect of principal shall be paid
         first, to the Class II-A-1 Notes and second to the Class II-A-2 Notes,
         in each case until the related Note Principal Balance has been reduced
         to zero;

                  (iii)    any remaining related Principal Distribution Amount,
         to the Class M-1 Notes until the Note Principal Balance of such Class
         is reduced to zero;

                  (iv)     any remaining related Principal Distribution Amount,
         to the Class M-2 Notes until the Note Principal Balance of such Class
         is reduced to zero;

                  (v)      any remaining related Principal Distribution Amount,
         to the Class M-3 Notes until the Note Principal Balance of such Class
         is reduced to zero; and

                  (vi)     any remainder as part of the related Net Monthly
         Excess Cashflow to be allocated as described in Section 3.05(e) below.

         (d)      On each Payment Date (1) on or after the Stepdown Date and (2)
on which a Trigger Event is not in effect, the holders of each class of Notes,
other than the Class N Notes, shall be entitled to receive payments in respect
of principal to the extent of the Principal Distribution Amount in the following
amounts and order of priority:

                  (i)      concurrently, the related Class A Principal
         Allocation Fraction of the Class A Principal Distribution Amount shall
         be allocated to the Class I-A, Class II-A, Class III-A, Class IV-A and
         Class V-A Notes, until the Note Principal Balances thereof have been
         reduced to zero, with any amounts payable to the Class I-A Notes
         payable to the Class I-A-1 Notes and Class I-A-2 Notes, pro rata, and
         with any amounts payable to the Class II-A Notes payable to the Class
         II-A-1 Notes and Class II-A-2 Notes, pro rata;


                                       31
<PAGE>


                  (ii)     concurrently, any remaining Class A Principal
         Distribution Amount shall be distributed to the Class I-A, Class II-A,
         Class III-A, Class IV-A and Class V-A Notes on a pro rata basis, based
         on the Note Principal Balances thereof, until the Note Principal
         Balances thereof have been reduced to zero, with any amounts payable to
         the Class I-A Notes payable to the Class I-A-1 Notes and Class I-A-2
         Notes, pro rata, and with any amounts payable to the Class II-A Notes
         payable to the Class II-A-1 Notes and Class II-A-2 Notes, pro rata;

                  (iii)    to the Class M-1 Notes, the Class M-1 Principal
         Distribution Amount, until the Note Principal Balance thereof has been
         reduced to zero;

                  (iv)     to the Class M-2 Notes, the Class M-2 Principal
         Distribution Amount, until the Note Principal Balance thereof has been
         reduced to zero;

                  (v)      to the Class M-3 Notes, the Class M-3 Principal
         Distribution Amount, until the Note Principal Balance thereof has been
         reduced to zero; and

                  (vi)     any remainder as part of the related Net Monthly
         Excess Cashflow to be allocated as described in Section 3.05(e) below.

         (e)      On each Payment Date, any Net Monthly Excess Cashflow for the
Group I, Group II, Group III, Group IV and Group V Loans shall be paid, in each
case to the extent of remaining related Net Excess Monthly Cashflow, as follows:

                  (i)      to the holders of the Class I-A, Class II-A, Class
         III-A, Class IV-A, Class V-A and Class M Notes in an amount equal to
         the related Overcollateralization Increase Amount, payable to such
         holders as part of the related Principal Distribution Amount as
         provided in 3.05(c) and (d) above;

                  (ii)     to the holders of the Class I-A-2 Notes and Class
         II-A-2 Notes, on a pro rata basis, based on the amount of Allocated
         Realized Loss Amount for such Notes, an amount equal to the Allocated
         Realized Loss Amount for such Notes, to the extent not previously
         reimbursed;

                  (iii)    to the holders of the Class M-1 Notes, first, an
         amount equal to any related Unpaid Interest Shortfalls for such Notes,
         and second, an amount equal to any related Allocated Realized Loss
         Amount for such Notes, in each case to the extent not previously
         reimbursed;

                  (iv)     to the holders of the Class M-2 Notes, first, an
         amount equal to any related Unpaid Interest Shortfalls for such Notes,
         and second, an amount equal to any related Allocated Realized Loss
         Amount for such Notes, in each case to the extent not previously
         reimbursed;

                  (v)      to the holders of the Class M-3 Notes, first, an
         amount equal to any related Unpaid Interest Shortfalls for such Notes,
         and second, an amount equal to any related


                                       32
<PAGE>


         Allocated Realized Loss Amount for such Notes, in each case to the
         extent not previously reimbursed;

                  (vi)     to the holders of the Class I-A, Class II-A, Class
         III-A, Class IV-A and Class V-A Notes, on a pro rata basis, based on
         the amount of any related Basis Risk Shortfall Carry-Forward Amount or
         Net WAC Shortfall Carry-Forward Amount for such Notes on such Payment
         Date, any related Basis Risk Shortfall Carry-Forward Amount or Net WAC
         Shortfall Carry-Forward Amount for such Notes on such Payment Date, to
         the extent not covered, in the case of the Class I-A Notes, by the Swap
         Agreement as provided in Section 3.05(g) below;

                  (vii)    sequentially to the holders of the Class M-1, Class
         M-2 and Class M-3 Notes, any related Basis Risk Shortfall Carry-Forward
         Amount for such Notes on such Payment Date, to the extent not covered
         by the Cap Contracts as provided in Section 3.05(f) below;

                  (viii)   to the Class VI-A, Class VI-M and Class VI-B Notes,
         to be included in the related Net Monthly Excess Cashflow as described
         below;

                  (ix)     20% of the amount remaining to be included as
         Crossable Excess as provided in section 3.07(c) below;

                  (x)      until the Note Principal Balance of the Class N Notes
         has been reduced to zero, to the holders of the Class N Notes as
         provided in Section 3.09; and

                  (xi)     any remaining amounts will be distributed to the
         Certificate Paying Agent, as designee of the Issuer, for the benefit of
         the holders of the Trust Certificates, as provided herein and in the
         Trust Agreement.

         (f)      On each Payment Date, any payments received from the
Derivative Contract Counterparty with respect to the Cap Contracts with respect
to such Payment Date will be allocated to the Class M Notes and the Trust
Certificates in the following order of priority, in each case to the extent of
amounts remaining:

                  (i)      the Cap Contract Allocation Amounts will be paid pro
         rata, to the Class M Notes in reduction of any related Basis Risk
         Shortfall Carry-Forward Amount for such classes for that Payment Date;

                  (ii)     from any amounts remaining from the Cap Contracts,
         pro rata to the Class M Notes in reduction of any remaining Basis Risk
         Shortfall Carry-Forward Amount for such class or classes for such
         Payment Date; and


                                       33
<PAGE>


                  (iii)    any remaining amounts from the Cap Contracts shall be
         distributed to the Certificate Paying Agent, as designee of the Issuer,
         for the benefit of the Holders of the Trust Certificates, as provided
         herein and in the Trust Agreement.

         (g)      On each Payment Date, any payments received from the
Derivitave Contract Counterparty with respect to the Corridor Contract with
respect to such Payment Date will be deposited into a reserve fund to be
allocated to the Class I-A Notes and the Trust Certificates in the following
order of priority, in each case to the extent of amounts remaining:

                  (i)      the Class I-A Corridor Contract Allocation Amount
         will be paid to the Class I-A Notes, pro rata, in reduction of any
         related Basis Risk Shortfall Carry-Forward Amount for such Class for
         that Payment Date;

                  (ii)     any remaining amounts from the Corridor Contract
         shall be distributed to the Certificate Paying Agent, as designee of
         the Issuer, for the benefit of the Holders of the Trust Certificates,
         as provided herein and in the Trust Agreement.

         (h)      On each Payment Date, any payments received from the
Derivative Contract Counterparty with respect to the Swap Agreements will be
included in the Net Monthly Excess Cashflow for the Group I, Group II, Group
III, Group IV and Group V Mortgage Loans.

         Section 3.06 Payment of Group VI Available Funds.

         (a)      On each Payment Date from amounts on deposit in the Payment
Account in accordance with Section 8.02 hereof, the Indenture Trustee shall pay
to the Persons specified below, to the extent provided therein, the Group VI
Available Funds for such Payment Date.

         (b)      On each Payment Date, the Indenture Trustee shall withdraw
from the Payment Account the Group VI Available Funds for such Payment Date and
make the following payments in the order of priority described below, in each
case to the extent of the related Available Funds remaining for such Payment
Date:

                  (i)      to the holders of the Class VI-A Notes, the related
         Accrued Note Interest for each such Class for such Payment Date, plus
         any related Unpaid Interest Shortfall for such Payment Date;

                  (ii)     from the remaining Group VI Available Funds for such
         Payment Date, to the holders of the Class VI-M-1 Notes, the related
         Accrued Note Interest for such Class for such Payment Date;

                  (iii)    from the remaining Group VI Available Funds for such
         Payment Date, to the holders of the Class VI-M-2 Notes, the related
         Accrued Note Interest for such Class for such Payment Date;

                  (iv)     from the remaining Group VI Available Funds for such
         Payment Date, to the holders of the Class VI-M-3 Notes, the related
         Accrued Note Interest for such Class for such Payment Date;


                                       34
<PAGE>


                  (v)      from the remaining Group VI Available Funds for such
         Payment Date, to the holders of the Class VI-B-1 Notes, the related
         Accrued Note Interest for such Class for such Payment Date;

                  (vi)     from the remaining Group VI Available Funds for such
         Payment Date, to the holders of the Class VI-B-2 Notes, the related
         Accrued Note Interest for such Class for such Payment Date;

                  (vii)    from the remaining Group VI Available Funds for such
         Payment Date, to the holders of the Class VI-B-3 Notes, the related
         Accrued Note Interest for such Class for such Payment Date; and

                  (viii)   any remainder (to the extent not included as a part
         of the related Principal Distribution Amount as provided in Section
         3.06(c) below) shall be included in the related Net Monthly Excess
         Cashflow and allocated as described in Section 3.06(d) below.


         (c)      On each Payment Date the holders of each class of Class VI-A,
Class VI-M and Class VI-B Notes shall be entitled to receive payments in respect
of principal to the extent of the Principal Distribution Amount in the following
amounts and order of priority:

                  (i)      first, the related Principal Distribution Amount
         shall be distributed to the Class VI-A, Class VI-M and Class VI-B Notes
         on a pro rata basis, based on the Note Principal Balances thereof,
         until the Note Principal Balances thereof have been reduced to zero;
         provided, however, that any amounts payable to the Class VI-A Notes
         shall be payable sequentially first to the Class VI-A-1 Notes, and
         second, to the Class VI-A-2 Notes, in each case until the Note
         Principal Balance thereof has been reduced to zero; and

                  (ii)     to any remainder as part of the related Net Monthly
         Excess Cashflow for the Group VI Loans to be allocated as described
         Section 3.06(d) below.

         (d)      On each Payment Date, any Net Monthly Excess Cashflow for the
Group VI Loans shall be paid, in each case to the extent of remaining Net Excess
Monthly Cashflow, as follows:

                  (i)      to the holders of the Class VI-A, Class VI-M and
         Class VI-B Notes in an amount equal to the related
         Overcollateralization Increase Amount, payable to such holders as part
         of the related Principal Distribution Amount as provided in 3.06(c)
         above;

                  (ii)     to the holders of the Class VI-M-1 Notes, first, an
         amount equal to any related Unpaid Interest Shortfalls for such Notes,
         and second, an amount equal to any related Allocated Realized Loss
         Amount for such Notes, in each case to the extent not previously
         reimbursed;

                  (iii)    to the holders of the Class VI-M-2 Notes, first, an
         amount equal to any related Unpaid Interest Shortfalls for such Notes,
         and second, an amount equal to any


                                       35
<PAGE>


         related Allocated Realized Loss Amount for such Notes, in each case to
         the extent not previously reimbursed;

                  (iv)     to the holders of the Class VI-M-3 Notes, first, an
         amount equal to any related Unpaid Interest Shortfalls for such Notes,
         and second, an amount equal to any related Allocated Realized Loss
         Amount for such Notes, in each case to the extent not previously
         reimbursed;

                  (v)      to the holders of the Class VI-B-1 Notes, first, an
         amount equal to any related Unpaid Interest Shortfalls for such Notes,
         and second, an amount equal to any related Allocated Realized Loss
         Amount for such Notes, in each case to the extent not previously
         reimbursed;

                  (vi)     to the holders of the Class VI-B-2 Notes, first, an
         amount equal to any related Unpaid Interest Shortfalls for such Notes,
         and second, an amount equal to any related Allocated Realized Loss
         Amount for such Notes, in each case to the extent not previously
         reimbursed

                  (vii)    to the holders of the Class VI-B-3 Notes, first, an
         amount equal to any related Unpaid Interest Shortfalls for such Notes,
         and second, an amount equal to any related Allocated Realized Loss
         Amount for such Notes, in each case to the extent not previously
         reimbursed;

                  (viii)   to the holders of the Class VI-A Notes, pro rata,
         based on the amount of any related Net WAC Shortfall Carry-Forward
         Amount for such Notes on such Payment Date, any related Net WAC
         Shortfall Carry-Forward Amount for such Notes on such Payment Date;

                  (ix)     sequentially to the holders of the Class VI-M-1,
         Class VI-M-2, Class VI-M-3, Class VI-B-1, Class VI-B-2 and Class VI-B-3
         Notes, any related Basis Risk Shortfall Carry-Forward Amount for such
         Notes on such Payment Date;

                  (x)      to the Class I-A, Class II-A, Class III-A, Class
         IV-A, Class V-A and Class M Notes to be included in the related Net
         Monthly Excess Cashflow as provided in Section 3.05(e) above;

                  (xi)     20% of the amount remaining to be included as
         Crossable Excess as provided in Section 3.07(c) below;

                  (xii)    until the Note Principal Balance of the Class N Notes
         has been reduced to zero, to the holders of the Class N Notes as
         provided in the Section 3.09 below; and

                  (xiii)   any remaining amounts will be distributed to the
         Certificate Paying Agent, as designee of the Issuer, for the benefit of
         the holders of the Trust Certificates, as provided herein and in the
         Trust Agreement.


                                       36
<PAGE>


         Section 3.07 Payment of Principal and Interest on the Class VII-A
Notes.

         (a)      On each Payment Date, the Investor Interest Collections,
reduced by the HELOC Master Servicing Fee, will be distributed in the following
priority:

                  (i)      to the Insurer, the Premium Amount;

                  (ii)     to the holders of the Class VII-A Notes, accrued
         interest and unpaid interest, in each case accrued at a rate equal to
         the related Note Interest Rate;

                  (iii)    to the holders of the Class VII-A Notes, as a payment
         of principal, Investor Charge-Off Amounts incurred during the preceding
         calendar month and the Investor Charge-Off Amounts incurred during
         previous periods that were not subsequently funded by Investor Interest
         Collections, overcollateralization or draws under the Insurance Policy;

                  (iv)     to the Insurer, as reimbursement for prior draws made
         under the Insurance Policy;

                  (v)      to the holders of the Class VII-A Notes, as a payment
         of principal, the amount necessary to build the overcollateralization
         to the Overcollateralization Target Amount;

                  (vi)     to the Insurer, any other amounts owed to the Insurer
         pursuant to the Insurance Agreement;

                  (vii)    to the holders of the Class VII-A Notes, Basis Risk
         Shortfall Carry-Forward Amounts on the Class VII-A Notes; and

                  (viii)   to the owner of the Transferor Interest, any
         remaining amounts.

         (b)      On each Payment Date, Principal Collections on the HELOC
Mortgage Loans, will be distributed in the following priority:

                  (i)      to Holders of the Class VII-A Notes, the lesser of
         the outstanding Note Principal Balance of the Class VII-A Notes and the
         Investor Principal Distribution Amount; and

                  (ii)     any remaining amounts will be distributed to the
         Certificate Paying Agent, as designee of the Issuer, for the benefit of
         the holders of the Trust Certificates in respect of the Transferor's
         Interest, as provided herein and in the Trust Agreement.

         (c)      On each Payment Date, Crossable Excess from the Net Monthly
Excess Cashflow from Loan Group I, Loan Group II, Loan Group III, Loan Group IV
and Loan Group V and from Loan Group VI shall be paid as follows:


                                       37
<PAGE>


                  (i)      to the holders of the Class VII-A Notes, as a payment
         of principal, Investor Charge-Off Amounts incurred during the preceding
         calendar month and the Investor Charge-Off Amounts incurred during
         previous periods that were not subsequently funded by Investor Interest
         Collections, overcollateralization or draws under the Insurance Policy,
         to the extent not paid from Investor Interest Collections above;

                  (ii)     to the Insurer, as reimbursement for prior draws made
         under the Insurance Policy, to the extent not paid from Investor
         Interest Collections above;

                  (iii)    to the holders of the Class VII-A Notes, as a payment
         of principal, the amount necessary to build the overcollateralization
         to the Overcollateralization Target Amount, to the extent not paid from
         Investor Interest Collections pursuant to Section 3.07(a) above; and

                  (iv)     any remaining amounts will be distributed to the
         Certificate Paying Agent, as designee of the Issuer, for the benefit of
         the holders of the Trust Certificates in respect of the Transferor's
         Interest, as provided herein and in the Trust Agreement.

         Section 3.08 Rapid Amortization Events.

         A Rapid Amortization Event is any of the following events:

         (a)      Investor Interest Collections or Principal Collections for any
Payment Date are not enough to make any payment of principal or interest in each
case that is due on the Class VII-A Notes, and such failure continues for a
period of five Business Days;

         (b)      a declaration of bankruptcy or insolvency by any of the Trust,
the Depositor, the HELOC Subservicer or the Servicer;

         (c)      the Trust becomes subject to the Investment Company Act of
1940;

         (d)      failure on the part of the Trust, the Depositor, the Seller,
the HELOC Subservicer or the HELOC Master Servicer to perform any of its other
material obligations under the HELOC Servicing Agreement, the Trust Agreement,
the HELOC Subservicing Agreement or the Indenture;

         (e)      a draw on the Insurance Policy is unreimbursed for 90 days; or

         (f)      the occurrence of a Servicer Termination Event.

         If any event described in clause (a) or (d) occurs, a Rapid
Amortization Event will occur only if, after the applicable grace period, either
the Insurer or the Indenture Trustee acting at the
direction of the Noteholders holding notes evidencing more than 51% in principal
amount of the Class VII-A Notes then outstanding, by written notice to the
holder of the Transferor Interest, the Depositor and the HELOC Master Servicer
(and to the Indenture Trustee, if given by the Insurer, or the Noteholders)
declare that a Rapid Amortization Event has occurred. If any event


                                       38
<PAGE>


described in clauses (b), (c), (e) or (f) occurs, a Rapid Amortization Event
will occur without any notice or other action on the part of the Indenture
Trustee, the Insurer or the Noteholders immediately on the occurrence of such
event.

         Notwithstanding the foregoing, if a conservator, receiver or
trustee-in-bankruptcy is appointed for the HELOC Master Servicer or the HELOC
Subservicer, as the case may be, and no Rapid Amortization Event exists other
than the conservatorship, receivership or insolvency of the HELOC Master
Servicer or the HELOC Subservicer, such conservator, receiver or
trustee-in-bankruptcy may have the power to prevent the commencement of a Rapid
Amortization Event.

         Section 3.09 Payments to the Class N Notes.

         (a)      On each Payment Date, the amounts payable to the Class N Notes
pursuant to Section 3.05(e)(x) and 3.06(d)(xii) will be distributed as follows:

                  (i)      to the Holders of the Class N Notes, the related
         Accrued Note Interest for such Class for such Payment Date;

                  (ii)     to the holders of the Class N Notes, in reduction of
         the Note Principal Balance thereof, until reduced to zero; and

                  (iii)    any remaining amounts will be distributed to the
         Certificate Paying Agent, as designee of the Issuer, for the benefit of
         the holders of the Trust Certificates, as provided herein and in the
         Trust Agreement.

         Section 3.10 Other Matters With Respect to the Notes.

         (a)      Each distribution with respect to a Book-Entry Note shall be
paid to the Depository, as Holder thereof, and the Depository shall be
responsible for crediting 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 Note Owners that it represents and to each indirect participating brokerage
firm (a "brokerage firm" or "indirect participating firm") for which it acts as
agent. Each brokerage firm shall be responsible for disbursing funds to the Note
Owners that it represents. None of the Indenture Trustee, the Note Registrar,
the Paying Agent, the Depositor or the related Master Servicer shall have any
responsibility therefor except as otherwise provided by this Indenture or
applicable law.

         (b)      On each Payment Date, the Certificate Paying Agent shall
deposit in the Certificate Distribution Account all amounts it received pursuant
to Sections 3.05, 3.06, 3.07 and 3.08 for the purpose of distributing such funds
to the Certificateholders.

         (c)      Any installment of interest or principal, if any, payable on
any Note that is punctually paid or duly provided for by the Issuer on the
applicable Payment Date shall, if such Holder shall have so requested at least
five Business Days prior to the related Record Date, be paid to each Holder of
record on the preceding Record Date, by wire transfer to an account specified in
writing by such Holder reasonably satisfactory to the Indenture Trustee as of
the preceding Record Date or in all other cases or if no such instructions have
been delivered to the


                                       39
<PAGE>


Indenture Trustee, by check to such Noteholder mailed to such Holder's address
as it appears in the Note Register in the amount required to be distributed to
such Holder on such Payment Date pursuant to such Holder's Notes; provided,
however, that the Indenture Trustee shall not pay to such Holders any amount
required to be withheld from a payment to such Holder by the Code.

         (d)      The principal of each Note shall be due and payable in full on
the Final Scheduled Payment Date for such Note as provided in the forms of Note
set forth in Exhibits A-1, A-2, A-3 and A-4 to this Indenture. All principal
payments on the Notes shall be made to the Noteholders entitled thereto in
accordance with the Percentage Interests represented by such Notes. Upon notice
to the Indenture Trustee by the Issuer, the Indenture Trustee shall notify the
Person in whose name a Note is registered at the close of business on the Record
Date preceding the Final Scheduled Payment Date or other final Payment Date
(including any final Payment Date resulting from any redemption pursuant to
Section 8.07 hereof). Such notice shall to the extent practicable be mailed no
later than five Business Days prior to such Final Scheduled Payment Date or
other final Payment Date and shall specify that payment of the principal amount
and any interest due with respect to such Note at the Final Scheduled Payment
Date or other final Payment Date will be payable only upon presentation and
surrender of such Note and shall specify the place where such Note may be
presented and surrendered for such final payment. No interest shall accrue on
the Notes on or after the Final Scheduled Payment Date or any such other final
Payment Date.

         Section 3.11 Protection of Trust Estate.

         (a)      The Issuer will from time to time prepare, execute and deliver
all such supplements and amendments hereto and all such financing statements,
continuation statements, instruments of further assurance and other instruments,
and will take such other action necessary or advisable to:

                  (i)      maintain or preserve the lien and security interest
         (and the priority thereof) of this Indenture or carry out more
         effectively the purposes hereof;

                  (ii)     perfect, publish notice of or protect the validity of
         any Grant made or to be made by this Indenture;

                  (iii)    cause the Issuer or related Master Servicer to
         enforce any of the rights to the Mortgage Loans or the HELOC Mortgage
         Loans, as applicable; or

                  (iv)     preserve and defend title to the Trust Estate and the
         rights of the Indenture Trustee, the Insurer and the Noteholders in
         such Trust Estate against the claims of all persons and parties.

         (b)      Except as otherwise provided in this Indenture, the Indenture
Trustee shall not remove any portion of the Trust Estate that consists of money
or is evidenced by an instrument, certificate or other writing from the
jurisdiction in which it was held at the date of the most recent Opinion of
Counsel delivered pursuant to Section 3.11 hereof (or from the jurisdiction in
which it was held as described in the Opinion of Counsel delivered on the
Closing Date pursuant to Section 3.11(a) hereof, if no Opinion of Counsel has
yet been delivered pursuant to Section 3.11(b)


                                       40
<PAGE>


hereof), unless the Indenture Trustee shall have first received an Opinion of
Counsel to the effect that the lien and security interest created by this
Indenture with respect to such property will continue to be maintained after
giving effect to such action or actions.

         The Issuer hereby designates the Indenture Trustee its agent and
attorney-in-fact to sign any financing statement, continuation statement or
other instrument required to be signed pursuant to this Section 3.11 upon the
Issuer's preparation thereof and delivery to the Indenture Trustee.

         Section 3.12 Opinions as to Trust Estate.

         (a)      On the Closing Date, the Issuer shall furnish to the Indenture
Trustee, the Insurer and the Owner Trustee an Opinion of Counsel either stating
that, in the opinion of such counsel, such action has been taken with respect to
the recording and filing of this Indenture, any indentures supplemental hereto,
and any other requisite documents, and with respect to the execution and filing
of any financing statements and continuation statements, as are necessary to
perfect and make effective the lien and first priority security interest in the
Collateral and reciting the details of such action, or stating that, in the
opinion of such counsel, no such action is necessary to make such lien and first
priority security interest effective.

         (b)      On or before April 15 in each calendar year, beginning in
2005, the Issuer shall furnish to the Indenture Trustee, the Insurer an Opinion
of Counsel at the expense of the Issuer either stating that, in the opinion of
such counsel, such action has been taken with respect to the recording, filing,
re-recording and refiling of this Indenture, any indentures supplemental hereto
and any other requisite documents and with respect to the execution and filing
of any financing statements and continuation statements as is necessary to
maintain the lien and first priority security interest in the Collateral and
reciting the details of such action or stating that in the opinion of such
counsel no such action is necessary to maintain such lien and security interest.
Such Opinion of Counsel shall also describe the recording, filing, re-recording
and refiling of this Indenture, any indentures supplemental hereto and any other
requisite documents and the execution and filing of any financing statements and
continuation statements that will, in the opinion of such counsel, be required
to maintain the lien and security interest in the Collateral until December 31
in the following calendar year.

         Section 3.13 Performance of Obligations.

         (a)      The Issuer will punctually perform and observe all of its
obligations and agreements contained in this Indenture, the Basic Documents and
in the instruments and agreements included in the Trust Estate.

         (b)      The Issuer, with the consent of the Insurer so long as no
Insurer Default exists, may contract with other Persons to assist it in
performing its duties under this Indenture, and any performance of such duties
by a Person identified to the Indenture Trustee in an Officer's Certificate of
the Issuer shall be deemed to be action taken by the Issuer.


                                       41
<PAGE>


         (c)      The Issuer will not take any action or permit any action to be
taken by others which would release any Person from any of such Person's
covenants or obligations under any of the documents relating to the Mortgage
Loans and HELOC Mortgage Loans or under any instrument included in the Trust
Estate, or which would result in the amendment, hypothecation, subordination,
termination or discharge of, or impair the validity or effectiveness of, any of
the documents relating to the Mortgage Loans and HELOC Mortgage Loans or any
such instrument, except such actions as the related Master Servicer is expressly
permitted to take in the related Servicing Agreement. The Indenture Trustee, as
pledgee of the Mortgage Loans and HELOC Mortgage Loans, may, with the consent
of, or at the direction of, the Insurer, so long as no Insurer Default exists,
exercise the rights of the Issuer to direct the actions of the RMBS Master
Servicer pursuant to the RMBS Servicing Agreement and the HELOC Master Servicer
pursuant to the HELOC Servicing Agreement.

         Section 3.14 Negative Covenants. So long as any Notes are Outstanding,
the Issuer shall not:

         (a)      except as expressly permitted by this Indenture, sell,
transfer, exchange or otherwise dispose of the Trust Estate, unless directed to
do so by the Insurer or the Indenture Trustee, with the consent of the Insurer,
so long as no Insurer Default exists;

         (b)      claim any credit on, or make any deduction from the principal
or interest payable in respect of, the Notes (other than amounts properly
withheld from such payments under the Code) or assert any claim against any
present or former Noteholder, by reason of the payment of the taxes levied or
assessed upon any part of the Trust Estate;

         (c)      (A) permit the validity or effectiveness of this Indenture to
be impaired, or permit the lien of this Indenture to be amended, hypothecated,
subordinated, terminated or discharged, or permit any Person to be released from
any covenants or obligations with respect to the Notes under this Indenture
except as may be expressly permitted hereby, (B) permit any lien, charge,
excise, claim, security interest, mortgage or other encumbrance (other than the
lien of this Indenture) to be created on or extend to or otherwise arise upon or
burden the Trust Estate or any part thereof or any interest therein or the
proceeds thereof or (C) permit the lien of this Indenture not to constitute a
valid first priority security interest in the Trust Estate; or

         (d)      waive or impair, or fail to assert rights under, the Mortgage
Loans and HELOC Mortgage Loans, or impair or cause to be impaired the Issuer's
interest in the Mortgage Loans and HELOC Mortgage Loans, the Mortgage Loan
Purchase Agreement or in any Basic Document, if any such action would materially
and adversely affect the interests of the Noteholders or the Insurer.


                                       42
<PAGE>


         Section 3.15 Annual Statement as to Compliance. The Issuer will deliver
to the Indenture Trustee and the Insurer, by March 1 of each year commencing
with the calendar year 2005, an Officer's Certificate stating, as to the
Authorized Officer signing such Officer's Certificate, that:

         (a)      a review of the activities of the Issuer during the previous
calendar year and of its performance under this Indenture has been made under
such Authorized Officer's supervision; and

         (b)      to the best of such Authorized Officer's knowledge, based on
such review, the Issuer has complied with all conditions and covenants under
this Indenture throughout such year, or, if there has been a default in its
compliance with any such condition or covenant, specifying each such default
known to such Authorized Officer and the nature and status thereof.

         Section 3.16 Representations and Warranties Concerning the Mortgage
Loans. The Indenture Trustee, as pledgee of the Mortgage Loans and HELOC
Mortgage Loans, shall have the benefit of the representations and warranties
made by the Seller in (i) the Mortgage Loan Purchase Agreement concerning the
Seller and the Initial Mortgage Loans and Initial HELOC Mortgage Loans and (ii)
any Group I, Group II, Group III, Group IV, Group V, Group VI and Group VI
Mortgage Loan Purchase Agreement concerning the Seller and the related Group I,
Group II, Group III, Group IV, Group V and Group VI Subsequent Mortgage Loans
and Group VII Subsequent HELOC Mortgage Loans to the same extent as though such
representations and warranties were made directly to the Indenture Trustee. If a
Responsible Officer of the Indenture Trustee has actual knowledge of any breach
of any representation or warranty made by the Seller in the Mortgage Loan
Purchase Agreement, or in the applicable Group I, Group II, Group III, Group IV,
Group V, Group VI or Group VII Subsequent Mortgage Loan Purchase Agreement, the
Indenture Trustee shall promptly notify the Seller and the Insurer, if
applicable, of such finding and of the Seller's obligation to cure such defect
or repurchase or substitute for the related Mortgage Loan or HELOC Mortgage
Loan.

         Section 3.17 Amendments to Servicing Agreement. The Issuer covenants
with the Indenture Trustee and the Insurer that it will not enter into any
amendment or supplement to any Servicing Agreement without the prior written
consent of the Indenture Trustee and the Insurer.

         Section 3.18 Master Servicer as Agent and Bailee of the Indenture
Trustee. Solely for purposes of perfection under Section 9-305 of the Uniform
Commercial Code or other similar applicable law, rule or regulation of the state
in which such property is held by the Master Servicer, the Issuer and the
Indenture Trustee hereby acknowledge that the related Master Servicer is acting
as bailee of the Indenture Trustee in holding amounts on deposit in the related
Collection Account, as well as its bailee in holding any Related Documents
released to the related Master Servicer, and any other items constituting a part
of the Trust Estate which from time to time come into the possession of the
related Master Servicer. It is intended that, by the related Master Servicer's
acceptance of such bailee arrangement, the Indenture Trustee, as a secured party
of the Mortgage Loans or HELOC Mortgage Loans, as applicable, will be deemed to
have possession of such Related Documents, such monies and such other items for
purposes of Section 9-305 of the Uniform Commercial Code of the state in which
such property is held by the related Master


                                       43
<PAGE>


Servicer. The Indenture Trustee shall not be liable with respect to such
documents, monies or items while in possession of the related Master Servicer.

         Section 3.19 Investment Company Act. The Issuer shall not become an
"investment company" or be under the "control" of an "investment company" as
such terms are defined in the Investment Company Act of 1940, as amended (or any
successor or amendatory statute), and the rules and regulations thereunder
(taking into account not only the general definition of the term "investment
company" but also any available exceptions to such general definition);
provided, however, that the Issuer shall be in compliance with this Section 3.19
if it shall have obtained an order exempting it from regulation as an
"investment company" so long as it is in compliance with the conditions imposed
in such order.

         Section 3.20 Issuer May Consolidate, etc.

         (a)      The Issuer shall not consolidate or merge with or into any
other Person, unless the Insurer consents thereto and:

                  (i)      the Person (if other than the Issuer) formed by or
         surviving such consolidation or merger shall be a Person organized and
         existing under the laws of the United States of America or any state or
         the District of Columbia and shall expressly assume, by an indenture
         supplemental hereto, executed and delivered to the Indenture Trustee,
         in form reasonably satisfactory to the Indenture Trustee and the
         Insurer, the due and punctual payment of the principal of and interest
         on all Notes, and the payment of the Insurance Premium and all amounts
         payable to the Indenture Trustee, the Derivative Contract Counterparty,
         the payment to the Certificate Paying Agent of all amounts due to the
         Certificateholders, and the performance or observance of every
         agreement and covenant of this Indenture on the part of the Issuer to
         be performed or observed, all as provided herein;

                  (ii)     immediately after giving effect to such transaction,
         no Default or Event of Default shall have occurred and be continuing;

                  (iii)    the Rating Agencies shall have notified the Issuer
         and the Insurer, with respect to the Class VII-A Notes, that such
         transaction shall not cause the rating of the Notes to be reduced,
         qualified, suspended or withdrawn or to be considered by either Rating
         Agency to be below investment grade without taking into account the
         Insurance Policy;

                  (iv)     the Issuer shall have received an Opinion of Counsel
         (and shall have delivered a copy thereof to the Indenture Trustee and
         the Insurer) to the effect that such transaction will not (A) result in
         a "substantial modification" of the Notes under Treasury Regulation
         section 1.1001-3, or adversely affect the status of the Notes as
         indebtedness for federal income tax purposes, or (B) if 100% of the
         Certificates are not owned by AHM SPV III, LLC, cause the Trust to be
         subject to an entity level tax for federal income tax purposes;


                                       44
<PAGE>


                  (v)      any action that is necessary to maintain the lien and
         security interest created by this Indenture shall have been taken;

                  (vi)     the Issuer shall have delivered to the Indenture
         Trustee and the Insurer an Officer's Certificate and an Opinion of
         Counsel each stating that such consolidation or merger and such
         supplemental indenture comply with this Article III and that all
         conditions precedent herein provided for or relating to such
         transaction have been complied with (including any filing required by
         the Exchange Act), and that such supplemental indenture is enforceable;
         and

                  (vii)    the Insurer, so long as no Insurer Default exists,
         shall have given its prior consent.

         (b)      The Issuer shall not convey or transfer any of its properties
or assets, including those included in the Trust Estate, to any Person, unless:

                  (i)      the Person that acquires by conveyance or transfer
         the properties and assets of the Issuer, the conveyance or transfer of
         which is hereby restricted, shall (A) be a United States citizen or a
         Person organized and existing under the laws of the United States of
         America or any state thereof, (B) expressly assume, by an indenture
         supplemental hereto, executed and delivered to the Indenture Trustee
         and the Insurer, in form satisfactory to the Indenture Trustee and, the
         due and punctual payment of the principal of and interest on all Notes
         and the payment of the Premium Amount and all other amounts payable to
         the Derivative Counterparty and the Insurer and the performance or
         observance of every agreement and covenant of this Indenture on the
         part of the Issuer to be performed or observed, all as provided herein,
         (C) expressly agree by means of such supplemental indenture that all
         right, title and interest so conveyed or transferred shall be subject
         and subordinate to the rights of the Holders of the Notes and the
         Insurer, (D) unless otherwise provided in such supplemental indenture,
         expressly agree to indemnify, defend and hold harmless the Issuer and
         the Indenture Trustee and the Insurer against and from any loss,
         liability or expense arising under or related to this Indenture and the
         Notes and (E) expressly agree by means of such supplemental indenture
         that such Person (or if a group of Persons, then one specified Person)
         shall make all filings with the Commission (and any other appropriate
         Person) required by the Exchange Act in connection with the Notes;

                  (ii)     immediately after giving effect to such transaction,
         no Default or Event of Default shall have occurred and be continuing;

                  (iii)    the Rating Agencies shall have notified the Issuer
         and the Insurer that such transaction shall not cause the rating of the
         Notes to be reduced, qualified, suspended or withdrawn;

                  (iv)     the Issuer and the Insurer shall have received an
         Opinion of Counsel (and shall have delivered a copy thereof to the
         Indenture Trustee and the Insurer) to the effect


                                       45
<PAGE>


         that such transaction will not (A) result in a "substantial
         modification" of the Notes under Treasury Regulation section 1.1001-3,
         or adversely affect the status of the Notes as indebtedness for federal
         income tax purposes, or (B) if 100% of the Certificates are not owned
         by AHM SPV III, LLC, cause the Trust to be subject to an entity level
         tax for federal income tax purposes;

                  (v)      any action that is necessary to maintain the lien and
         security interest created by this Indenture shall have been taken;

                  (vi)     the Issuer shall have delivered to the Indenture
         Trustee and the Insurer an Officer's Certificate and an Opinion of
         Counsel each stating that such conveyance or transfer and such
         supplemental indenture comply with this Article III and that all
         conditions precedent herein provided for relating to such transaction
         have been complied with (including any filing required by the Exchange
         Act); and

                  (vii)    the Insurer, so long as no Insurer Default exists,
         shall have given its prior written consent.

         Section 3.21 Successor or Transferee.

         (a)      Upon any consolidation or merger of the Issuer in accordance
with Section 3.20(a), the Person formed by or surviving such consolidation or
merger (if other than the Issuer) shall, following the Issuer's satisfaction of
all of the conditions precedent set forth therein with respect thereto, succeed
to, and be substituted for, and may exercise every right and power of, the
Issuer under this Indenture with the same effect as if such Person had been
named as the Issuer herein.

         (b)      Upon a conveyance or transfer of all the assets and properties
of the Issuer pursuant to Section 3.20(b), the Issuer, following its
satisfaction of all of the conditions precedent set forth herein with respect
thereto, will be released from every covenant and agreement of this Indenture to
be observed or performed on the part of the Issuer with respect to the Notes
immediately upon the delivery of written notice to the Indenture Trustee and the
Insurer of such conveyance or transfer and approval of such transaction given by
the Insurer to the Indenture Trustee.

         Section 3.22 No Other Business. The Issuer shall not engage in any
business other than as set forth with respect thereto in the Trust Agreement and
other than financing, purchasing, owning and selling and managing the Mortgage
Loans and HELOC Mortgage Loans and the issuance of the Notes and Certificates in
the manner contemplated by this Indenture and the Basic Documents and all
activities incidental thereto.

         Section 3.23 No Borrowing. The Issuer shall not issue, incur, assume,
guarantee or otherwise become liable, directly or indirectly, for any
indebtedness except for the Notes under this Indenture.

         Section 3.24 Guarantees, Loans, Monthly Advances and Other Liabilities.
Except as contemplated by this Indenture or the Basic Documents, the Issuer
shall not make any loan or


                                       46
<PAGE>


advance or credit to, or guarantee (directly or indirectly or by an instrument
having the effect of assuring another's payment or performance on any obligation
or capability of so doing or otherwise), endorse or otherwise become
contingently liable, directly or indirectly, in connection with the obligations,
stocks or dividends of, or own, purchase, repurchase or acquire (or agree
contingently to do so) any stock, obligations, assets or securities of, or any
other interest in, or make any capital contribution to, any other Person.

         Section 3.25 Capital Expenditures. The Issuer shall not make any
expenditure (by long-term or operating lease or otherwise) for capital assets
(either realty or personalty).

         Section 3.26 Determination of Note Interest Rate. On each Interest
Determination Date the Indenture Trustee shall determine One-Month LIBOR and
Six-Month LIBOR and the related Note Interest Rate for each Class of Notes for
the following Accrual Period and shall make such information available to the
Issuer, the Master Servicer, the Insurer and the Depositor. The establishment of
One-Month LIBOR and Six-Month LIBOR on each Interest Determination Date by the
Indenture Trustee and the Indenture Trustee's calculation of the rate of
interest applicable to each Class of Notes for the related Accrual Period shall
(in the absence of manifest error) be final and binding.

         Section 3.27 Restricted Payments. The Issuer shall not, directly or
indirectly, (i) pay any dividend or make any distribution (by reduction of
capital or otherwise), whether in cash, property, securities or a combination
thereof, to the Owner Trustee or any owner of a beneficial interest in the
Issuer or otherwise with respect to any ownership or equity interest or security
in or of the Issuer, (ii) redeem, purchase, retire or otherwise acquire for
value any such ownership or equity interest or security or (iii) set aside or
otherwise segregate any amounts for any such purpose; provided, however, that
the Issuer may make, or cause to be made, (x) distributions and payments to the
Owner Trustee, the Indenture Trustee, the Certificate Registrar, the Certificate
Paying Agent, the Noteholders, the Certificateholders and the Insurer as
contemplated by, and to the extent funds are available for such purpose under
this Indenture and the Trust Agreement and (y) payments to the Master Servicers
and the Subservicers pursuant to the terms of the related Servicing Agreement or
Subservicing Agreement. The Issuer will not, directly or indirectly, make
payments to or distributions from the Collection Account except in accordance
with this Indenture and the Basic Documents.

         Section 3.28 Notice of Events of Default. The Issuer shall give the
Indenture Trustee, the Insurer and the Rating Agencies prompt written notice of
each Event of Default hereunder and under the Trust Agreement.

         Section 3.29 Further Instruments and Acts. Upon request of the
Indenture Trustee or the Insurer, the Issuer will execute and deliver such
further instruments and do such further acts as may be reasonably necessary or
proper to carry out more effectively the purpose of this Indenture.

         Section 3.30 Statements to Noteholders. On each Payment Date, the
Indenture Trustee shall make available on the Indenture Trustee's website,
www.bnyinvestorreporting.com (or deliver at the recipient's option), to each
Noteholder and Certificateholder the statement prepared by the Indenture Trustee
pursuant to and in the manner provided for in Section 7.05 hereof.


                                       47
<PAGE>


         Section 3.31 Interest Coverage Accounts.

         (a)      No later than the Closing Date, the Indenture Trustee shall
establish and maintain seven segregated trust accounts each of which is an
Eligible Account, shall be titled "Group I Interest Coverage Account, The Bank
of New York., as indenture trustee for the registered holders of American Home
Mortgage Investment Trust Series 2004-4" (the "Group I Interest Coverage
Account"), "Group II Interest Coverage Account, The Bank of New York., as
indenture trustee for the registered holders of American Home Mortgage
Investment Trust Series 2004-4" (the "Group II Interest Coverage Account"),
"Group III Interest Coverage Account, The Bank of New York., as indenture
trustee for the registered holders of American Home Mortgage Investment Trust
Series 2004-4" (the "Group III Interest Coverage Account"), "Group IV Interest
Coverage Account, The Bank of New York., as indenture trustee for the registered
holders of American Home Mortgage Investment Trust Series 2004-4" (the "Group IV
Interest Coverage Account"); "Group V Interest Coverage Account, The Bank of New
York., as indenture trustee for the registered holders of American Home Mortgage
Investment Trust Series 2004-4" (the "Group V Interest Coverage Account");
"Group VI Interest Coverage Account, The Bank of New York., as indenture trustee
for the registered holders of American Home Mortgage Investment Trust Series
2004-4" (the "Group VI Interest Coverage Account"); and "Group VII Interest
Coverage Account, The Bank of New York., as indenture trustee for the registered
holders of American Home Mortgage Investment Trust Series 2004-4" (the "Group
VII Interest Coverage Account"), respectively. The Indenture Trustee shall,
promptly upon receipt, deposit in the related Interest Coverage Account and
retain therein the related Interest Coverage Amount remitted on the Closing Date
to the Indenture Trustee by the Depositor. Funds deposited in the related
Interest Coverage Account shall be held in trust by the Indenture Trustee for
the benefit of the related Noteholders and the Insurer for the uses and purposes
set forth herein.

         (b)      For federal income tax purposes, the Seller shall be the owner
of the Interest Coverage Accounts and shall report all items of income,
deduction, gain or loss arising therefrom. All income and gain realized from
investment of funds deposited in the related Interest Coverage Account, which
investment shall be made solely upon the written direction of the Seller in
Permitted Investments, shall be for the sole and exclusive benefit of the
related Seller and shall be remitted by the Indenture Trustee to the Seller at
the end of the Funding Period. The Seller shall deposit in the related Interest
Coverage Account the amount of any net loss incurred in respect of any such
Permitted Investment immediately upon realization of such loss.

         (c)      On each Payment Date during the Funding Period and on the
Payment Date immediately following the end of the Funding Period, the Indenture
Trustee shall withdraw from the Group I, Group II, Group III, Group IV, Group V,
Group VI and Group VII Interest Coverage Accounts and deposit in the Payment
Account an amount equal to 30 days' interest on the excess, if any, of the
related Group I, Group II, Group III, Group IV, Group V, Group VI and Group VII
Original Pre-Funded Amount over the aggregate Principal Balance of related Group
I, Group II, Group III, Group IV, Group V, Group VI Subsequent Mortgage Loans
and Group VII Subsequent HELOC Mortgage Loans that (in each case) both (i) had a
Due Date during the Due Period relating to such Payment Date and (ii) had a
Subsequent Cut-off Date prior to the first day of the month in which such
Payment Date occurs, at a per annum rate equal to the related


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<PAGE>


weighted average Net Mortgage Rate of the related Mortgage Loans. In addition,
amounts shall be withdrawn from the Group VII Interest Coverage Account in
respect to shortfalls as a result of the HELOC Mortgage Loans with Mortgage
Rates that were supposed to reset in November 2004 but did not as identified in
the Mortgage Loan Schedule. Such withdrawal and deposit shall be treated as a
contribution of cash by the Seller to the Trust Fund on the date thereof.
Immediately following any such withdrawal and deposit, and immediately following
the conveyance of any Group I, Group II, Group III, Group IV, Group V, Group VI
Subsequent Mortgage Loans or Group VII Subsequent HELOC Mortgage Loans to the
Trust on any related Subsequent Transfer Date, the Indenture Trustee shall
withdraw from the related Interest Coverage Account and remit to the Seller or
its designee an amount equal to the excess, if any, of the amount remaining in
such Interest Coverage Account over the amount that would be required to be
withdrawn therefrom (assuming sufficient funds therein) pursuant to the
preceding sentence on each subsequent Payment Date, if any, that will occur
during the Funding Period or that will be the Payment Date immediately following
the end of the Funding Period, if no related Group I, Group II, Group III, Group
IV, Group V, Group VI Subsequent Mortgage Loans or Group VII Subsequent HELOC
Mortgage Loans were acquired by the Trust Fund after the end of the Prepayment
Period relating to the current Payment Date.

         (d)      Upon the earliest of (i) the Payment Date immediately
following the end of the Funding Period, (ii) the reduction of the Note
Principal Balances of the Notes to zero or (iii) the termination of this
Agreement in accordance with Section 8.04, any amount remaining on deposit in
the related Interest Coverage Account after distributions pursuant to paragraph
(c) above shall be withdrawn by the Indenture Trustee and paid to the Seller or
its designee.

         Section 3.32 The Pre-Funding Accounts. (a) No later than the Closing
Date, the Indenture Trustee shall establish and maintain seven segregated trust
accounts each of which is an Eligible Account, which shall be titled "Group I
Pre-Funding Account, The Bank of New York, as indenture trustee for the
registered holders of American Home Mortgage Investment Trust Series 2004-4"
(the "Group I Pre-Funding Account"); "Group II Pre-Funding Account, The Bank of
New York, as indenture trustee for the registered holders of American Home
Mortgage Investment Trust Series 2004-4" (the "Group II Pre-Funding Account");
"Group III Pre-Funding Account, The Bank of New York, as indenture trustee for
the registered holders of American Home Mortgage Investment Trust Series 2004-4"
(the "Group III Pre-Funding Account"); "Group IV Pre-Funding Account, The Bank
of New York, as indenture trustee for the registered holders of American Home
Mortgage Investment Trust Series 2004-4" (the "Group IV Pre-Funding Account");
"Group V Pre-Funding Account, The Bank of New York, as indenture trustee for the
registered holders of American Home Mortgage Investment Trust Series 2004-4"
(the "Group V Pre-Funding Account"); "Group VI Pre-Funding Account, The Bank of
New York, as indenture trustee for the registered holders of American Home
Mortgage Investment Trust Series 2004-4" (the "Group VI Pre-Funding Account")
and "Group VII Pre-Funding Account, The Bank of New York, as indenture trustee
for the registered holders of American Home Mortgage Investment Trust Series
2004-4" (the "Group VII Pre-Funding Account"), respectively. The Indenture
Trustee shall, promptly upon receipt, deposit in the related Group I, Group II,
Group III, Group IV, Group V, Group VI and Group VII Pre-Funding Accounts and
retain therein the related Group I, Group II, Group III, Group IV, Group VI,
Group VI and Group VII Original Pre-Funded Amount remitted on the Closing Date
to the Indenture Trustee by the


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<PAGE>


Depositor. Funds deposited in the related Group I, Group II, Group III, Group
IV, Group V, Group VI and Group VII Pre-Funding Account shall be held in trust
by the Indenture Trustee for the benefit of the related Noteholders and the
Insurer, with respect to the Class VII-A Notes, for the uses and purposes set
forth herein.

         (b)      The Indenture Trustee will invest at written direction of
funds deposited in the Group I, Group II, Group III, Group IV, Group V, Group VI
and Group VII Pre-Funding Account, as directed by the Seller in writing, in
Eligible Investments with a maturity date (i) no later than the Business Day
immediately preceding the date on which such funds are required to be withdrawn
from such account pursuant to this Indenture, if a Person other than the
Indenture Trustee or an Affiliate manages or advises such investment, (ii) no
later than the date on which such funds are required to be withdrawn from such
account pursuant to this Indenture, if the Indenture Trustee or an Affiliate
manages or advises such investment or (iii) within one (1) Business Day of the
Indenture Trustee's receipt thereof. For federal income tax purposes, the Seller
shall be the owner of the Group I, Group II, Group III, Group IV, Group V, Group
VI and Group VII Pre-Funding Account and shall report all items of income,
deduction, gain or loss arising therefrom. All income and gain realized from
investment of funds deposited in the related Group I, Group II, Group III, Group
IV, Group V, Group VI and Group VII Pre-Funding Account shall be included in the
related Available Funds at the following times: (i) on the Business Day
immediately preceding each Payment Date, if a Person other than the Indenture
Trustee or an Affiliate of the Indenture Trustee manages or advises such
investment, or on each Payment Date, if the Indenture Trustee or an Affiliate of
the Indenture Trustee manages or advises such investment, (ii) on the Business
Day immediately preceding the related Subsequent Transfer Date, if a Person
other than the Indenture Trustee or an Affiliate of the Indenture Trustee
manages or advises such investment, or on the related Subsequent Transfer Date,
if the Indenture Trustee or an Affiliate of the Indenture Trustee manages or
advises such investment or (iii) within one (1) Business Day of the Indenture
Trustee's receipt thereof. The Seller shall deposit in the related Group I,
Group II, Group III, Group IV, Group V, Group VI and Group VII Pre-Funding
Account the amount of any net loss incurred in respect of any such Eligible
Investment immediately upon realization of such loss without any right of
reimbursement therefor.

         (c)      Amounts on deposit in the Group I, Group II, Group III, Group
IV, Group V, Group VI and Group VII Pre-Funding Account shall be withdrawn by
the Indenture Trustee as follows:

                  (i)      On the related Group I, Group II, Group III, Group
         IV, Group V, Group VI or Group VII Subsequent Transfer Date, the
         Indenture Trustee shall withdraw from the related Group I, Group II,
         Group III, Group IV, Group V, Group VI or Group VII Pre-Funding Account
         an amount equal to 100% of the aggregate Stated Principal Balances of
         the related Group I, Group II, Group III, Group IV, Group V, Group VI
         or Group VII Subsequent HELOC Mortgage Loans transferred and assigned
         to the Indenture Trustee for deposit in the Mortgage Pool on the
         related Group I, Group II, Group III, Group IV, Group V, Group VI or
         Group VII Subsequent Transfer Date and pay such amount to or upon the
         order of the Issuer upon satisfaction of the conditions set


                                       50
<PAGE>


         forth in Sections 2.05, 2.06, 2.07, 2.08, 2.09, 2.10 or 2.11, as
         applicable, with respect to such transfer and assignment;

                  (ii)     If the amount on deposit in the related Group I,
         Group II, Group III, Group IV, Group V, Group VI or Group VII
         Pre-Funding Account has not been reduced to zero during the Funding
         Period, on the day immediately following the termination of the Funding
         Period, the Indenture Trustee shall deposit into the Payment Account
         any amounts remaining in the related Group I, Group II, Group III,
         Group IV, Group V, Group VI or Group VII Pre-Funding Account for
         distribution in accordance with the terms hereof;

                  (iii)    To withdraw any amount not required to be deposited
         in the related Group I, Group II, Group III, Group IV, Group V, Group
         VI or Group VII Pre-Funding Account or deposited therein in error; and

                  (iv)     To clear and terminate the Group I, Group II, Group
         III, Group IV, Group V, Group VI or Group VII Pre-Funding Account upon
         the earlier to occur of (A) the Payment Date immediately following the
         end of the Funding Period and (B) the termination of this Indenture,
         with any amounts remaining on deposit therein being paid to the Holders
         of the Notes then entitled to distributions in respect of principal.

         Section 3.33 Grant of the Subsequent Mortgage Loans and Subsequent
HELOC Mortgage Loans. In consideration of the delivery on the related Group I,
Group II, Group III, Group IV, Group V, Group VI or Group VII Subsequent
Transfer Date to or upon the order of the Issuer of all or a portion of the
amount on deposit in the related Group I, Group II, Group III, Group IV, Group
V, Group VI or Group VII Pre-Funding Account, the Depositor shall, to the extent
of the availability thereof, on the related Subsequent Transfer Date during the
Funding Period, grant to the Indenture Trustee all of its rights, title and
interest in the related Group I, Group II, Group III, Group IV, Group V, Group
VI Mortgage Loans or Group VII Subsequent HELOC Mortgage Loans and
simultaneously with the Grant of the related Group I, Group II, Group III, Group
IV, Group V, Group VI Subsequent Mortgage Loans or Group VII Subsequent HELOC
Mortgage Loans, the Depositor will cause the related Mortgage File to be
delivered to the Custodian.

         Section 3.34 Replacement Swap Agreements. In the event of an Event of
Default or Termination Event with respect to the Derivative Contract
Counterparty with respect to the related Swap Agreement (a "Swap Agreement
Default"), the Issuer, at its expense, may, but shall not be required to,
substitute a new derivative contract or any other form of similar coverage for
basis risk shortfalls for such Swap Agreement; provided, however, that the
timing and mechanism for receiving payments under such new swap agreement shall
be reasonably acceptable to the Indenture Trustee. It shall be a condition to
substitution of any new swap agreement that there be delivered to the Indenture
Trustee an Opinion of Counsel to the effect that such substitution would not (a)
result in a "substantial modification" of the Notes under Treasury Regulation
section 1.1001-3, or adversely affect the status of the Notes as indebtedness
for federal income tax purposes, or (b) if 100% of the Certificates are not
owned by AHM III SPV, cause the Trust to be subject to entity level tax for
federal income tax purposes.


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<PAGE>


         Section 3.35 Payments Under the Insurance Policy. (a) (1) By 12:00 noon
(New York Time) on the later of (i) the third Business Day following the
Business Day on which the Insurer shall have received Notice (as defined in the
Insurance Policy) that a Deficiency Amount is due in respect of the Class VII-A
Notes and (ii) the Payment Date on which the related Deficiency Amount is
payable to the Noteholders and (2) at such time as the Indenture Trustee shall
deliver an acceleration notice to the Noteholders pursuant to Section 5.02, the
Indenture Trustee on behalf of the Class VII-A Noteholders, shall make a draw on
the Insurance Policy in an amount, if any, equal to the Deficiency Amount.

         (b)      If the Indenture Trustee determines that a Deficiency Amount
will exist for the following Payment Date, then the Indenture Trustee shall
submit a Notice (as defined in the Insurance Policy) for payment in the amount
of the Deficiency Amount to the Insurer no later than 12:00 Noon, New York City
time, on the third Business Day prior to the applicable Payment Date. Upon
receipt of such Deficiency Amount in accordance with the terms of the Insurance
Policy, the Indenture Trustee shall deposit such Deficiency Amount in the
Payment Account for distribution to the Class VII-A Noteholders pursuant to
Section 3.07 hereof or with respect to an acceleration pursuant to Section 5.02
hereof.

         In addition, according to the terms of the Insurance Policy (in the
form attached hereto as Exhibit F), a draw may be made under the Insurance
Policy in respect of any Preference Amount applicable to any of the Class VII-A
Noteholders (as defined in and pursuant to the terms and conditions of the such
Insurance Policy) and the Indenture Trustee shall submit a Notice (as defined in
such Insurance Policy) for payment with respect thereto together with the other
documents required to be delivered to the Insurer pursuant to the Insurance
Policy in connection with a draw in respect of any Preference Amount.

         Section 3.36 Replacement Insurance Policy. In the event of a Insurer
Default (a "Replacement Event"), the Issuer, at its expense, in accordance with
and upon satisfaction of the conditions set forth in the Insurance Policy,
including, without limitation, payment in full of all amounts owed to the
Insurer, may, but shall not be required to, substitute a new surety bond or
surety bonds for the existing Insurance Policy or may arrange for any other form
of credit enhancement; provided, however, that in each case after giving effect
to such substitute or other form of credit enhancement the Class VII-A Notes
shall be rated no lower than the rating assigned by each Rating Agency to the
Class VII-A Notes, respectively, immediately prior to such Replacement Event and
the timing and mechanism for drawing on such new credit enhancement shall be
reasonably acceptable to the Indenture Trustee and provided further that the
premiums under the proposed credit enhancement shall not exceed such premiums
under the existing Insurance Policy. It shall be a condition to substitution of
any new credit enhancement that there be delivered to the Indenture Trustee (i)
an Opinion of Counsel, acceptable in form to the Indenture Trustee and the
Rating Agencies, from counsel to the provider of such new credit enhancement
with respect to the enforceability thereof and such other matters as the
Indenture Trustee and the Rating Agencies may require and (ii) an Opinion of
Counsel to the effect that such substitution would not (a) result in a
"substantial modification" of the Notes under Treasury Regulation section
1.1001-3, or adversely affect the status of the Notes as indebtedness for
federal income tax purposes, or (b) if 100% of the Certificates are not owned by
AHM SPV III LLC, cause the Trust to be subject to an entity level tax for
federal income tax purposes. Upon receipt


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<PAGE>


of the items referred to above and payment of all amounts owing to the Insurer
and the taking of physical possession of the new credit enhancement, the
Indenture Trustee shall, within five Business Days following receipt of such
items and such taking of physical possession, deliver the replaced Insurance
Policy to the Insurer. In the event of any such replacement the Issuer shall
give written notice thereof to the Rating Agencies.

         Section 3.37 Certain Representations Regarding the Trust Estate.

         (a)      With respect to that portion of the Collateral described in
clauses (a) through (j) of the Granting Clause, the Issuer represents to the
Indenture Trustee that:

                  (i)      This Indenture creates a valid and continuing
         security interest (as defined in the applicable UCC) in the Collateral
         in favor of the Indenture Trustee, which security interest is prior to
         all other liens, and is enforceable as such as against creditors of and
         purchasers from the Issuer.

                  (ii)     The Collateral constitutes "deposit accounts" or
         "instruments," as applicable, within the meaning of the applicable UCC.

                  (iii)    The Issuer owns and has good and marketable title to
         the Collateral, free and clear of any lien, claim or encumbrance of any
         Person.

                  (iv)     The Issuer has taken all steps necessary to cause the
         Indenture Trustee to become the account holder of the Collateral.

                  (v)      Other than the security interest granted to the
         Indenture Trustee pursuant to this Indenture, the Issuer has not
         pledged, assigned, sold, granted a security interest in, or otherwise
         conveyed any of the Collateral.

                  (vi)     The Collateral is not in the name of any Person other
         than the Issuer or the Indenture Trustee. The Issuer has not consented
         to the bank maintaining the Collateral to comply with instructions of
         any Person other than the Indenture Trustee.

         (b)      With respect to that portion of the Collateral described in
clauses (j) and (k) of the Granting Clause, the Issuer represents to the
Indenture Trustee that:

                  (i)      This Indenture creates a valid and continuing
         security interest (as defined in the applicable UCC) in the Collateral
         in favor of the Indenture Trustee, which security interest is prior to
         all other liens, and is enforceable as such as against creditors of and
         purchasers from the Issuer.

                  (ii)     The Collateral constitutes "general intangibles"
         within the meaning of the applicable UCC.

                  (iii)    The Issuer owns and has good and marketable title to
         the Collateral, free and clear of any lien, claim or encumbrance of any
         Person.


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<PAGE>


                  (iv)     Other than the security interest granted to the
         Indenture Trustee pursuant to this Indenture, the Issuer has not
         pledged, assigned, sold, granted a security interest in, or otherwise
         conveyed any of the Collateral.

         (c)      With respect to any Collateral in which a security interest
may be perfected by filing, the Issuer has not authorized the filing of, and is
not aware of any financing statements against, the Issuer, that include a
description of collateral covering such Collateral, other than any financing
statement relating to the security interest granted to the Indenture Trustee
hereunder or that has been terminated. The Issuer is not aware of any judgment
or tax lien filings against the Issuer.

         (d)      The Issuer has caused or will have caused, within ten days of
the Closing Date, the filing of all appropriate financing statements in the
proper filing office in the appropriate jurisdictions under applicable law in
order to perfect the security interest in all Collateral granted to the
Indenture Trustee hereunder in which a security interest may be perfected by
filing. Any financing statement that is filed in connection with this Section
3.37 shall contain a statement that a purchase or security interest in any
collateral described therein will violate the rights of the secured party named
in such financing statement.

         (e)      The foregoing representations may not be waived and shall
survive the issuance of the Notes.

         Section 3.38 Allocation of Realized Losses.

         (a)      Any Realized Losses on the Mortgage Loans in Loan Groups I,
II, III, IV and V will be allocated or covered on any Payment Date as follows:
first, to the related Net Monthly Excess Cashflow, by an increase in the related
Overcollateralization Increase Amount for that Payment Date as provided in
Section 3.05 of this Indenture; second, in reduction of the Overcollateralized
Amount until reduced to zero (meaning, no losses will be allocated to the Class
M Notes until the aggregate Note Principal Balance of the Class I-A, Class II-A,
Class III-A, Class IV-A, Class V-A, Class M-1, Class M-2 and Class M-3 Notes
equals the aggregate Stated Principal Balance of the Mortgage Loans in Loan
Groups I, II, III, IV and V; third, to the Class M-3 Notes, in reduction of the
Note Principal Balance thereof, until reduced to zero; fourth, to the Class M-2
Notes, in reduction of the Note Principal Balance thereof, until reduced to
zero; fifth, to the Class M-1 Notes, in reduction of the Note Principal Balance
thereof, until reduced to zero; and sixth, to the extent such Realized Losses is
on the Mortgage Loans in Loan Group I and II, to the Class I-A-2 Notes and Class
II-A-2 Notes, respectively, in reduction of the Note Principal Balance thereof,
until reduced to zero.

         (b)      Any Realized Losses on the Mortgage Loans in Loan Group VI
will be allocated or covered on any Payment Date as follows: first, to the
related Net Monthly Excess Cashflow, by an increase in the related
Overcollateralization Increase Amount for that Payment Date as provided in
Section 3.06 of this Indenture; second, in reduction of the related
Overcollateralized Amount, until reduced to zero (meaning, no losses will be
allocated to the Class VI-M Notes or Class VI-B Notes until the aggregate Note
Principal Balance of Class VI-A, Class VI-M and Class VI-B Notes equals the
aggregate Stated Principal Balance of the Mortgage Loans in Loan Group


                                       54
<PAGE>


VI); third, to the Class VI-B-3 Notes, in reduction of the Note Principal
Balance thereof, until reduced to zero; fourth, to the Class VI-B-2 Notes, in
reduction of the Note Principal Balance thereof, until reduced to zero; fifth,
to the Class VI-B-1 Notes, in reduction of the Note Principal Balance thereof,
until reduced to zero; sixth, to the Class VI-M-3 Notes, in reduction of the
Note Principal Balance thereof, until reduced to zero; seventh, to the Class
VI-M-2 Notes, in reduction of the Note Principal Balance thereof, until reduced
to zero; and eighth, to the Class VI-M-1 Notes, in reduction of the Note
Principal Balance thereof, until reduced to zero










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<PAGE>


                                   ARTICLE IV

               The Notes; Satisfaction and Discharge of Indenture

         Section 4.01 The Notes. Each Class of Notes shall be registered in the
name of a nominee designated by the Depository. With respect to the Class I-A,
Class II-A, Class III-A, Class IV-A, Class V-A and Class VI-A Notes, Class
Beneficial Owners will hold interests in the Notes through the book-entry
facilities of the Depository in minimum initial Note Principal Balances of
$25,000 and integral multiples of $1 in excess thereof. With respect to the
Class VII-A Notes, Class Beneficial Owners will hold interests in the Notes
through the book-entry facilities of the Depository in minimum initial Note
Principal Balances of $25,000 and integral multiples of $1,000 in excess
thereof.

         The Indenture Trustee may for all purposes (including the making of
payments due on the Notes) deal with the Depository as the authorized
representative of the Beneficial Owners with respect to the Notes for the
purposes of exercising the rights of Holders of the Notes hereunder. Except as
provided in the next succeeding paragraph of this Section 4.01, the rights of
Beneficial Owners with respect to the Notes shall be limited to those
established by law and agreements between such Beneficial Owners and the
Depository and Depository Participants. Except as provided in Section 4.08
hereof, Beneficial Owners shall not be entitled to definitive certificates for
the Notes as to which they are the Beneficial Owners. Requests and directions
from, and votes of, the Depository as Holder of the Notes shall not be deemed
inconsistent if they are made with respect to different Beneficial Owners. The
Indenture Trustee may establish a reasonable record date in connection with
solicitations of consents from or voting by Noteholders and give notice to the
Depository of such record date. Without the consent of the Issuer and the
Indenture Trustee, no Note may be transferred by the Depository except to a
successor Depository that agrees to hold such Note for the account of the
Beneficial Owners.

         In the event the Depository Trust Company resigns or is removed as
Depository, the Indenture Trustee with the approval of the Issuer may appoint a
successor Depository. If no successor Depository has been appointed within 30
days of the effective date of the Depository's resignation or removal, each
Beneficial Owner shall be entitled to certificates representing the Notes it
beneficially owns in the manner prescribed in Section 4.08.

         The Notes shall, on original issue, be executed on behalf of the Issuer
by the Owner Trustee, not in its individual capacity but solely as Owner
Trustee, authenticated by the Indenture Trustee and delivered by the Indenture
Trustee to or upon an Issuer Request.


                                       56
<PAGE>


         Section 4.02 Registration of and Limitations on Transfer and Exchange
of Notes; Appointment of Note Registrar and Certificate Registrar. The Issuer
shall cause to be kept at the Corporate Trust Office of the Indenture Trustee a
Note Register in which, subject to such reasonable regulations as it may
prescribe, the Note Registrar shall provide for the registration of Notes and of
transfers and exchanges of Notes as herein provided.

         Subject to the restrictions and limitations set forth below, upon
surrender for registration of transfer of any Note at the Corporate Trust Office
of the Indenture Trustee, the Issuer shall execute and the Note Registrar shall
authenticate and deliver, in the name of the designated transferee or
transferees, one or more new Notes in authorized initial Note Principal Balances
evidencing the same Class and aggregate Percentage Interests.

         Subject to the foregoing, at the option of the Noteholders, Notes may
be exchanged for other Notes of like tenor and in authorized initial Note
Principal Balances evidencing the same Class and aggregate Percentage Interests
upon surrender of the Notes to be exchanged at the Corporate Trust Office of the
Note Registrar. Whenever any Notes are so surrendered for exchange, the Issuer
shall execute and the Indenture Trustee shall authenticate and deliver the Notes
which the Noteholder making the exchange is entitled to receive. Each Note
presented or surrendered for registration of transfer or exchange shall (if so
required by the Note Registrar) be duly endorsed by, or be accompanied by a
written instrument of transfer in form reasonably satisfactory to the Note
Registrar duly executed by the Holder thereof or his attorney duly authorized in
writing with such signature guaranteed by a commercial bank or trust company
located or having a correspondent located in the city of New York. Notes
delivered upon any such transfer or exchange will evidence the same obligations,
and will be entitled to the same rights and privileges, as the Notes
surrendered.

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

         The Issuer hereby appoints the Indenture Trustee as (i) Certificate
Registrar to keep at its Corporate Trust Office a Certificate Register pursuant
to Section 3.09 of the Trust Agreement in which, subject to such reasonable
regulations as it may prescribe, the Certificate Registrar shall provide for the
registration of Certificates and of transfers and exchanges thereof pursuant to
Section 3.05 of the Trust Agreement and (ii) Note Registrar under this
Indenture. The Indenture Trustee hereby accepts such appointments.

         Section 4.03 Mutilated, Destroyed, Lost or Stolen Notes. If (i) any
mutilated Note is surrendered to the Indenture Trustee, or the Indenture Trustee
receives evidence to its satisfaction of the destruction, loss or theft of any
Note, and (ii) there is delivered to the Indenture Trustee such security or
indemnity as may be required by it to hold the Issuer and the Indenture Trustee
harmless, then, in the absence of notice to the Issuer, the Note Registrar or
the Indenture Trustee that such Note has been acquired by a bona fide purchaser,
and provided that the requirements of Section 8-405 of the UCC are met, the
Issuer shall execute, and upon Issuer Request the Indenture Trustee shall
authenticate and deliver, in exchange for or in lieu of any such mutilated,
destroyed, lost or stolen Note, a replacement Note; provided, however, that if
any such destroyed, lost or


                                       57
<PAGE>


stolen Note, but not a mutilated Note, shall have become or within seven days
shall be due and payable, instead of issuing a replacement Note, the Issuer may
pay such destroyed, lost or stolen Note when so due or payable without surrender
thereof. If, after the delivery of such replacement Note or payment of a
destroyed, lost or stolen Note pursuant to the proviso to the preceding
sentence, a bona fide purchaser of the original Note in lieu of which such
replacement Note was issued presents for payment such original Note, the Issuer
and the Indenture Trustee shall be entitled to recover such replacement Note (or
such payment) from the Person to whom it was delivered or any Person taking such
replacement Note from such Person to whom such replacement Note was delivered or
any assignee of such Person, except a bona fide purchaser, and shall be entitled
to recover upon the security or indemnity provided therefor to the extent of any
loss, damage, cost or expense incurred by the Issuer or the Indenture Trustee in
connection therewith.

         Upon the issuance of any replacement Note under this Section 4.03, the
Issuer may require the payment by the Holder of such Note of a sum sufficient to
cover any tax or other governmental charge that may be imposed in relation
thereto and any other reasonable expenses (including the fees and expenses of
the Indenture Trustee) connected therewith.

         Every replacement Note issued pursuant to this Section 4.03 in
replacement of any mutilated, destroyed, lost or stolen Note shall constitute an
original additional contractual obligation of the Issuer, whether or not the
mutilated, destroyed, lost or stolen Note shall be at any time enforceable by
anyone, and shall be entitled to all the benefits of this Indenture equally and
proportionately with any and all other Notes duly issued hereunder.

         The provisions of this Section 4.03 are exclusive and shall preclude
(to the extent lawful) all other rights and remedies with respect to the
replacement or payment of mutilated, destroyed, lost or stolen Notes.

         Section 4.04 Persons Deemed Owners. Prior to due presentment for
registration of transfer of any Note, the Issuer, the Indenture Trustee, the
Paying Agent and any agent of the Issuer, the Insurer or the Indenture Trustee
or the Paying Agent may treat the Person in whose name any Note is registered
(as of the day of determination) as the owner of such Note for the purpose of
receiving payments of principal of and interest, if any, on such Note and for
all other purposes whatsoever, whether or not such Note be overdue, and neither
the Issuer, the Insurer, the Indenture Trustee, the Paying Agent nor any agent
of the Issuer, the Insurer or the Indenture Trustee or the Paying Agent shall be
affected by notice to the contrary.

         Section 4.05 Cancellation. All Notes surrendered for payment,
registration of transfer, exchange or redemption shall, if surrendered to any
Person other than the Indenture Trustee, be delivered to the Indenture Trustee
and shall be promptly cancelled by the Indenture Trustee. The Issuer may at any
time deliver to the Indenture Trustee for cancellation any Notes previously
authenticated and delivered hereunder which the Issuer may have acquired in any
manner whatsoever, and all Notes so delivered shall be promptly cancelled by the
Indenture Trustee. No Notes shall be authenticated in lieu of or in exchange for
any Notes cancelled as provided in this Section 4.05, except as expressly
permitted by this Indenture. All cancelled Notes may be held or disposed of by
the Indenture Trustee in accordance with its standard retention or disposal
policy as


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<PAGE>


in effect at the time unless the Issuer shall direct by an Issuer Request that
they be destroyed or returned to it; provided, however, that such Issuer Request
is timely and the Notes have not been previously disposed of by the Indenture
Trustee.

         Section 4.06 Book-Entry Notes. The Notes, upon original issuance, will
be issued in the form of typewritten Notes representing the Book-Entry Notes, to
be delivered to The Depository Trust Company, the initial Depository, or its
designated custodian, by, or on behalf of, the Issuer. The Notes shall initially
be registered on the Note Register in the name of Cede & Co., the nominee of the
initial Depository, and no Beneficial Owner will receive a Definitive Note
representing such Beneficial Owner's interest in such Note, except as provided
in Section 4.08. With respect to such Notes, unless and until definitive, fully
registered Notes (the "Definitive Notes") have been issued to Beneficial Owners
pursuant to Section 4.08:

                  (i)      the provisions of this Section 4.06 shall be in full
         force and effect;

                  (ii)     the Note Registrar, the Paying Agent and the
         Indenture Trustee shall be entitled to deal with the Depository for all
         purposes of this Indenture (including the payment of principal of and
         interest on the Notes and the giving of instructions or directions
         hereunder) as the sole holder of the Notes, and shall have no
         obligation to the Beneficial Owners of the Notes;

                  (iii)    to the extent that the provisions of this Section
         4.06 conflict with any other provisions of this Indenture, the
         provisions of this Section 4.06 shall control;

                  (iv)     the rights of Beneficial Owners shall be exercised
         only through the Depository and shall be limited to those established
         by law and agreements between such Owners of Notes and the Depository
         and/or the Depository Participants. Unless and until Definitive Notes
         are issued pursuant to Section 4.08, the initial Depository will make
         book-entry transfers among the Depository Participants and receive and
         transmit payments of principal of and interest on the Notes to such
         Depository Participants; and

                  (v)      whenever this Indenture requires or permits actions
         to be taken based upon instructions or directions of Holders of Notes
         evidencing a specified percentage of the Note Principal Balances of the
         Notes, the Depository shall be deemed to represent such percentage with
         respect to the Notes only to the extent that it has received
         instructions to such effect from Beneficial Owners and/or Depository
         Participants owning or representing, respectively, such required
         percentage of the beneficial interest in the Notes and has delivered
         such instructions to the Indenture Trustee.





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<PAGE>


         Section 4.07 Notices to Depository. Whenever a notice or other
communication to the Note Holders is required under this Indenture, unless and
until Definitive Notes shall have been issued to Beneficial Owners pursuant to
Section 4.08, the Indenture Trustee shall give all such notices and
communications specified herein to be given to Holders of the Notes to the
Depository, and shall have no obligation to the Beneficial Owners.

         Section 4.08 Definitive Notes. If (i) the Depositor advises the
Indenture Trustee or the Note Registrar in writing that the Depository is no
longer willing or able to properly discharge its responsibilities as clearing
agency with respect to the Notes and the Depositor is unable to locate a
qualified successor within 30 days, (ii) the Depositor, at its option (with the
consent of the Indenture Trustee, which consent shall not by unreasonably
withheld), elects to terminate the book-entry system through the Depository or
(iii) after the occurrence of an Event of Default, any Note Owner materially and
adversely affected thereby may, at its option, request and receive a Definitive
Note evidencing such Note Owner's Percentage Interest in the related Class of
Notes. Upon surrender to the Indenture Trustee of the global Note or definitive
typewritten Notes representing the Book-Entry Notes by the Depository,
accompanied by registration instructions, the Note Registrar will re-issue the
Book-Entry Notes as Definitive Notes issued in the respective Note Principal
Balances owned by individual Note Owners. None of the Issuer, the Note Registrar
or the Indenture Trustee shall be liable for any delay in delivery of such
instructions and may conclusively rely on, and shall be protected in relying on,
such instructions. Upon the issuance of Definitive Notes, the Indenture Trustee
shall recognize the Holders of the Definitive Notes as Noteholders.

         Section 4.09 Tax Treatment. The Issuer has entered into this Indenture,
and the Notes will be issued with the intention that, for federal, state and
local income, single business and franchise tax purposes, the Notes will qualify
as indebtedness. The Issuer and the Indenture Trustee (in accordance with
Section 6.06 hereof), by entering into this Indenture, and each Noteholder, by
its acceptance of its Note (and each Beneficial Owner by its acceptance of an
interest in the applicable Book-Entry Note), agree to treat the Notes for
federal, state and local income, single business and franchise tax purposes as
indebtedness.

         Section 4.10 Satisfaction and Discharge of Indenture. This Indenture
shall cease to be of further effect with respect to the Notes except as to (i)
rights of registration of transfer and exchange, (ii) substitution of mutilated,
destroyed, lost or stolen Notes, (iii) rights of Noteholders to receive payments
of principal thereof and interest thereon, (iv) Sections 3.03, 3.04, 3.06, 3.09,
3.17, 3.19 and 3.20, (v) the rights, obligations and immunities of the Indenture
Trustee hereunder (including the rights of the Indenture Trustee under Section
6.07 and the obligations of the Indenture Trustee under Section 4.11), (vi) the
right of the Derivative Contract Counterparty to receive any unpaid Net Swap Fee
[or Additional Derivative Contract Counterparty Payment] and (vii) the rights of
Noteholders and the Insurer as beneficiaries hereof with respect to the property
so deposited with the Indenture Trustee payable to all or any of them, and the
Indenture Trustee, on demand of and at the expense of the Issuer, shall execute
proper instruments acknowledging satisfaction and discharge of this Indenture
with respect to the Notes and shall release and deliver the Collateral to or
upon the Issuer Request, when

         (A)      either


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<PAGE>


         (1)      all Notes theretofore authenticated and delivered (other than
(i) Notes that have been destroyed, lost or stolen and that have been replaced
or paid as provided in Section 4.03 hereof and (ii) Notes for whose payment
money has theretofore been deposited in trust or segregated and held in trust by
the Issuer and thereafter repaid to the Issuer or discharged from such trust, as
provided in Section 3.03) have been delivered to the Indenture Trustee for
cancellation; or

         (2)      all Notes not theretofore delivered to the Indenture Trustee
for cancellation

                  a.       have become due and payable,

                  b.       will become due and payable at the Final Scheduled
                           Payment Date within one year, or

                  c.       have been called for early redemption and the Trust
                           has been terminated pursuant to Section 8.07 hereof,

and the Issuer, in the case of a. or b. above, has irrevocably deposited or
caused to be irrevocably deposited with the Indenture Trustee cash or direct
obligations of or obligations guaranteed by the United States of America (which
will mature prior to the date such amounts are payable), in trust for such
purpose, in an amount sufficient to pay and discharge the entire indebtedness on
such Notes then outstanding not theretofore delivered to the Indenture Trustee
for cancellation when due on the Final Scheduled Payment Date or other final
Payment Date and has delivered to the Indenture Trustee and the Insurer a
verification report from a nationally recognized accounting firm certifying that
the amounts deposited with the Indenture Trustee are sufficient to pay and
discharge the entire indebtedness of such Notes, or, in the case of c. above,
the Issuer shall have complied with all requirements of Section 8.07 hereof,

         (B)      the Issuer has paid or caused to be paid all other sums
payable hereunder and under the Insurance Agreement by the Issuer as evidenced
by the written consent of the Insurer; and

         (C)      the Issuer has delivered to the Indenture Trustee and the
Insurer an Officer's Certificate and an Opinion of Counsel, each meeting the
applicable requirements of Section 10.01 hereof, each stating that all
conditions precedent herein provided for relating to the satisfaction and
discharge of this Indenture have been complied with and, if the Opinion of
Counsel relates to a deposit made in connection with Section 4.10(A)(2)b. above,
such opinion shall further be to the effect that such deposit will constitute an
"in-substance defeasance" within the meaning of Revenue Ruling 85-42, 1985-1
C.B. 36, and in accordance therewith, the Issuer will be the owner of the assets
deposited in trust for federal income tax purposes.

         Section 4.11 Application of Trust Money. All monies deposited with the
Indenture Trustee pursuant to Section 4.10 hereof shall be held in trust and
applied by it, in accordance with the provisions of the Notes and this
Indenture, to the payment, either directly or through any Paying Agent or the
Certificate Paying Agent as designee of the Issuer or the Insurer, as the


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<PAGE>


Indenture Trustee may determine, to the Holders of Securities, of all sums due
and to become due thereon for principal and interest or otherwise; but such
monies need not be segregated from other funds except to the extent required
herein or required by law.

         Section 4.12 Subrogation and Cooperation. (a) The Issuer and the
Indenture Trustee acknowledge that (i) to the extent the Insurer makes payments
under the Insurance Policy on account of principal of or interest on the Class
VII-A Notes, the Insurer will be fully subrogated to the rights of such Holders
to receive such principal and interest from the Issuer, and (ii) the Insurer
shall be paid such principal and interest but only from the sources and in the
manner provided herein and in the Insurance Agreement for the payment of such
principal and interest.

         The Indenture Trustee shall, so long as it is indemnified to its
satisfaction, cooperate in all respects with any reasonable written request by
the Insurer (unless a Insurer Default exists) for action to preserve or enforce
the Insurer's rights or interest under this Indenture or the Insurance
Agreement, consistent with this Indenture and without limiting the rights of the
Noteholders as otherwise set forth in the Indenture, including, without
limitation, upon the occurrence and continuance of a default under the Insurance
Agreement, a request to take any one or more of the following actions:

                  (i)      institute Proceedings for the collection of all
         amounts then payable on the Class VII-A Notes, or under this Indenture
         in respect of the Class VII-A Notes and all amounts payable under the
         Insurance Agreement, enforce any judgment obtained and collect from the
         Issuer monies adjudged due;

                  (ii)     sell or cause to be sold the Trust Estate or any
         portion thereof or rights or interest therein, at one or more public or
         private Sales (as defined in Section 5.15 (a) hereof) called and
         conducted in any manner permitted by law;

                  (iii)    institute Proceedings from time to time for the
         complete or partial foreclosure of this Indenture; and

                  (iv)     exercise any remedies of a secured party under the
         UCC and take any other appropriate action to protect and enforce the
         rights and remedies of the Insurer hereunder;

provided, however, action shall be taken pursuant to this Section 4.12 by the
Indenture Trustee to preserve the Insurer's rights or interest under this
Agreement or the Insurance Agreement only to the extent such action is available
to the Class VII-A Noteholders or the Insurer under other provisions of this
Indenture.

         Notwithstanding any provision of this Indenture to the contrary, so
long as no Insurer Default exists, the Insurer shall at all times be treated as
if it were the exclusive owner of all Class VII-A Notes Outstanding for the
purposes of all approvals, consents, waivers and the institution of any action
and the written direction of all remedies, and the Indenture Trustee shall act
in accordance with the written directions of the Insurer so long as it is
indemnified therefor to its reasonable satisfaction.


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<PAGE>


         Section 4.13 Repayment of Monies Held by Paying Agent. In connection
with the satisfaction and discharge of this Indenture with respect to the Notes,
all monies then held by any Person other than the Indenture Trustee under the
provisions of this Indenture with respect to such Notes shall, upon demand of
the Issuer, be paid to the Indenture Trustee to be held and applied according to
Sections 3.05, 3.06 and 3.07 and thereupon such Person shall be released from
all further liability with respect to such monies.

         Section 4.14 Temporary Notes. Pending the preparation of any Definitive
Notes, the Issuer may execute and upon its written direction, the Indenture
Trustee may authenticate and make available for delivery, temporary Notes that
are printed, lithographed, typewritten, photocopied or otherwise produced, in
any denomination, substantially of the tenor of the Definitive Notes in lieu of
which they are issued and with such appropriate insertions, omissions,
substitutions and other variations as the officers executing such Notes may
determine, as evidenced by their execution of such Notes.

         If temporary Notes are issued, the Issuer will cause Definitive Notes
to be prepared without unreasonable delay. After the preparation of the
Definitive Notes, the temporary Notes shall be exchangeable for Definitive Notes
upon surrender of the temporary Notes at the office of the Indenture Trustee
located at 101 Barclay Street, 1E, New York, New York 10286, Attention:
Corporate Trust Window, American Home Mortgage Investment Trust, Series 2004-4,
without charge to the Holder. Upon surrender for cancellation of any one or more
temporary Notes, the Issuer shall execute and, upon Issuer Request, the
Indenture Trustee shall authenticate and make available for delivery, in
exchange therefor, Definitive Notes of authorized denominations and of like
tenor, class and aggregate principal amount. Until so exchanged, such temporary
Notes shall in all respects be entitled to the same benefits under this
Indenture as Definitive Notes.

         Section 4.15 Representation Regarding ERISA. By acquiring a Note or
interest therein, each Holder of such Note or Beneficial Owner of any such
interest will be deemed to represent that either (1) it is not acquiring the
Note with Plan Assets or (2) (A) the acquisition, holding and transfer of such
Note will not give rise to a nonexempt prohibited transaction under Section 406
of ERISA or Section 4975 of the Code and (B) the Notes are rated investment
grade or better and such person believes that the Notes are properly treated as
indebtedness without substantial equity features for purposes of the Department
of Labor regulation 29 C.F.R. ss. 2510.3-101, and agrees to so treat the Notes.
Alternatively, regardless of the rating of the Notes, such person may provide
the Indenture Trustee and the Owner Trustee with an opinion of counsel, which
opinion of counsel will not be at the expense of the Issuer, the Seller, any
Underwriter, the Owner Trustee, the Indenture Trustee, the related Master
Servicer or any successor servicer which opines that the acquisition, holding
and transfer of such Note or interest therein is permissible under applicable
law, will not constitute or result in a non-exempt prohibited transaction under
ERISA or Section 4975 of the Code and will not subject the Issuer, the Seller,
the Depositor, any Underwriter, the Owner Trustee, the Indenture Trustee, the
related Master Servicer or any successor servicer to any obligation in addition
to those undertaken in the Indenture.


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<PAGE>


                                    ARTICLE V

                              Default and Remedies

         Section 5.01 Events of Default. The Issuer shall deliver to the
Indenture Trustee and the Insurer, within five days after learning of the
occurrence of an Event of Default, written notice in the form of an Officer's
Certificate of any event which with the giving of notice and the lapse of time
would become an Event of Default under clause (c) or (d) of the definition of
"Event of Default", its status and what action the Issuer is taking or proposes
to take with respect thereto. The Indenture Trustee shall not be deemed to have
knowledge of any Event of Default unless a Responsible Officer has actual
knowledge thereof or unless written notice of such Event of Default is received
by a Responsible Officer and such notice references the Notes, the Trust Estate
or this Indenture.

         Section 5.02 Acceleration of Maturity; Rescission and Annulment. If an
Event of Default should occur and be continuing, then and in every such case the
Indenture Trustee (i) with respect to the Notes, other than the Class VII-A
Notes, at the written direction of the Holders of Notes representing not less
than a majority of the aggregate Note Principal Balance of the Notes or (ii)
with respect to the Class VII-A Notes, so long as the Insurer is not in default
under the Insurance Policy, at the written direction of the Insurer or at the
written direction of the Holder of the majority of the aggregate Note Principal
Balance of the Class VII-A Notes with the consent of the Insurer, may declare
the Notes to be immediately due and payable, by a notice in writing to the
Issuer (and to the Indenture Trustee if such notice is given by Insurer or the
Noteholders), and upon any such declaration the unpaid Note Principal Balance of
the Notes, together with accrued and unpaid interest thereon through the date of
acceleration, shall become immediately due and payable.

         At any time after such declaration of acceleration of maturity with
respect to an Event of Default has been made and before a judgment or decree for
payment of the money due has been obtained by the Indenture Trustee as
hereinafter in this Article V provided, (i) with respect to the Notes, other
than the Class VII-A Notes, the Holders of the Notes representing not less than
a majority of the aggregate Note Principal Balance of each Class of Notes, other
than the Class VII-A Notes, by written notice to the Issuer and the Indenture
Trustee, or (ii) with respect to the Class VII-A Notes, the Insurer, so long as
the Insurer is not in default under the Insurance Policy, or the Holder of the
majority of the aggregate Note Principal Balance of the Class VII-A Notes with
the consent of the Insurer, by written notice to the Issuer and the Indenture
Trustee, may waive the related Event of Default and rescind and annul such
declaration and its consequences if:

         (a)      the Issuer has paid or deposited with the Indenture Trustee a
sum sufficient to pay:

                  (A)      all payments of principal of and interest on the
         Notes and all other amounts that would then be due hereunder or under
         the Notes if the Event of Default giving rise to such acceleration had
         not occurred;


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<PAGE>


                  (B)      all sums paid or advanced by the Indenture Trustee
         hereunder and the reasonable compensation, expenses, disbursements and
         advances of the Indenture Trustee and its agents and counsel; and

                  (C)      all amounts owed to the Insurer;

                  (D)      all amounts owed to the Derivative Contact
         Counterparty under the Cap Contract, Corridor Contract and Swap
         Agreements.

         (b)      All Events of Default, other than the nonpayment of the
principal of the Notes that has become due solely by such acceleration, have
been cured or waived as provided in Section 5.12.

No such rescission shall affect any subsequent default or impair any right
consequent thereto.

         Section 5.03 Collection of Indebtedness and Suits for Enforcement by
Indenture Trustee.

         (a)      The Issuer covenants that if (i) default is made in the
payment of any interest on any Note when the same becomes due and payable, and
such default continues for a period of five days, or (ii) default is made in the
payment of the principal of or any installment of the principal of any Note when
the same becomes due and payable, the Issuer shall, upon demand of the Indenture
Trustee, (i) with respect to the Notes other than the Class VII-A Notes, at the
written direction of the the Holders of a majority of the aggregate Note
Principal Balances of the Notes or (ii) with respect to the Class VII-A Notes,
so long as the Insurer is not in default under the Insurance Policy, at the
written direction of the Insurer or at the written direction of the Holder of
the majority of the aggregate Note Principal Balance of the Class VII-A Notes
with the consent of the Insurer, pay to the Indenture Trustee, for the benefit
of the Insurer, with respect to the Class VII-A Notes, or the Holders of Notes,
the whole amount then due and payable on the related Notes for principal and
interest, with interest at the applicable Note Interest Rate upon the overdue
principal, and in addition thereto such further amount as shall be sufficient to
cover the costs and expenses of collection, including the reasonable
compensation, expenses, disbursements and advances of the Indenture Trustee and
its agents and counsel.

         (b)      In case the Issuer shall fail forthwith to pay such amounts
upon such demand, the Indenture Trustee, in its own name and as trustee of an
express trust, subject to the provisions of Section 4.12 and Section 10.16
hereof, may institute a Proceeding for the collection of the sums so due and
unpaid, and may prosecute such Proceeding to judgment or final decree, and may
enforce the same against the Issuer or other obligor upon the Notes and collect
in the manner provided by law out of the property of the Issuer or other obligor
upon the Notes, wherever situated, the monies adjudged or decreed to be payable.

         (c)      If an Event of Default occurs and is continuing, the Indenture
Trustee, subject to the provisions of Section 4.12 and Section 10.16 hereof,
may, as more particularly provided in


                                       65
<PAGE>


Section 5.04 hereof, in its discretion, proceed to protect and enforce its
rights and the rights of the Insurer and the Noteholders by such appropriate
Proceedings as directed in writing by the Insurer or the Holders of a majority
of the aggregate Note Principal Balances of each Class of Notes, to protect and
enforce any such rights, whether for the specific enforcement of any covenant or
agreement in this Indenture or in aid of the exercise of any power granted
herein, or to enforce any other proper remedy or legal or equitable right vested
in the Indenture Trustee by this Indenture or by law.

         (d)      In case there shall be pending, relative to the Issuer or any
other obligor upon the Notes or any Person having or claiming an ownership
interest in the Trust Estate, Proceedings under Title 11 of the United States
Code or any other applicable federal or state bankruptcy, insolvency or other
similar law, or in case a receiver, assignee or trustee in bankruptcy or
reorganization, liquidator, sequestrator or similar official shall have been
appointed for or taken possession of the Issuer or its property or such other
obligor or Person, or in case of any other comparable judicial Proceedings
relative to the Issuer or other obligor upon the Notes, or to the creditors or
property of the Issuer or such other obligor, the Indenture Trustee, as directed
in writing by the Insurer or the Holders of a majority of the aggregate Note
Principal Balances of each Class of Notes, irrespective of whether the principal
of any Notes shall then be due and payable as therein expressed or by
declaration or otherwise and irrespective of whether the Indenture Trustee shall
have made any demand pursuant to the provisions of this Section, shall be
entitled and empowered, by intervention in such Proceedings or otherwise:

                  (i)      to file and prove a claim or claims for the whole
         amount of principal and interest owing and unpaid in respect of the
         Notes and to file such other papers or documents as may be necessary or
         advisable in order to have the claims of the Indenture Trustee
         (including any claim for reasonable compensation to the Indenture
         Trustee and each predecessor Indenture Trustee, and their respective
         agents, attorneys and counsel, and for reimbursement of all expenses
         and liabilities incurred, and all advances made, by the Indenture
         Trustee and each predecessor Indenture Trustee, except as a result of
         negligence, willful misconduct or bad faith) and of the Noteholders
         allowed in such Proceedings;

                  (ii)     unless prohibited by applicable law and regulations,
         to vote on behalf of the Holders of Notes in any election of a trustee,
         a standby trustee or Person performing similar functions in any such
         Proceedings;

                  (iii)    to collect and receive any monies or other property
         payable or deliverable on any such claims and to distribute all amounts
         received with respect to the claims of the Noteholders and of the
         Indenture Trustee on their behalf, and

                  (iv)     to file such proofs of claim and other papers or
         documents as may be necessary or advisable in order to have the claims
         of the Indenture Trustee or the Holders of Notes allowed in any
         judicial proceedings relative to the Issuer, its creditors and its
         property;


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<PAGE>


and any trustee, receiver, liquidator, custodian or other similar official in
any such Proceeding is hereby authorized by each of such Noteholders to make
payments to the Indenture Trustee, and, in the event that the Indenture Trustee
shall consent to the making of payments directly to such Noteholders, to pay to
the Indenture Trustee such amounts as shall be sufficient to cover reasonable
compensation to the Indenture Trustee, each predecessor Indenture Trustee and
their respective agents, attorneys and counsel, and all other expenses and
liabilities incurred, and all advances made, by the Indenture Trustee and each
predecessor Indenture Trustee.

         (e)      Nothing herein contained shall be deemed to authorize the
Indenture Trustee to authorize or consent to or vote for or accept or adopt on
behalf of any Noteholder any plan of reorganization, arrangement, adjustment or
composition affecting the Notes or the rights of any Holder thereof or to
authorize the Indenture Trustee to vote in respect of the claim of any
Noteholder in any such proceeding except, as aforesaid, to vote for the election
of a trustee in bankruptcy or similar Person.

         (f)      All rights of action and of asserting claims under this
Indenture, or under any of the Notes, may be enforced by the Indenture Trustee
without the possession of any of the Notes or the production thereof in any
trial or other Proceedings relative thereto, and any such action or proceedings
instituted by the Indenture Trustee shall be brought in its own name as trustee
of an express trust, and any recovery of judgment, subject to the payment of the
expenses, disbursements and compensation of the Indenture Trustee, each
predecessor Indenture Trustee and their respective agents and attorneys, shall
be for the ratable benefit of the Holders of the Notes, subject to Section 5.05
hereof.

         (g)      In any Proceedings brought by the Indenture Trustee (and also
any Proceedings involving the interpretation of any provision of this Indenture
to which the Indenture Trustee shall be a party), the Indenture Trustee shall be
held to represent all the Holders of the Notes, and it shall not be necessary to
make any Noteholder a party to any such Proceedings.

         (h)      When the Indenture Trustee incurs expenses or renders services
in connection with an Event of Default specified in clauses (iv) or (v) of the
definition thereof or any other related Proceedings the expenses (including the
reasonable charges and expenses of its counsel) and the compensation for the
services are intended to constitute expenses of administration under any
applicable Federal or state bankruptcy, insolvency or other similar law.

         Section 5.04 Remedies; Priorities.

         (a)      If an Event of Default shall have occurred and be continuing
and if an acceleration has been declared and not rescinded pursuant to Section
5.02 hereof, the Indenture Trustee, subject to the provisions of Section 10.16
hereof, may with the consent of the Insurer, and shall, (i) with respect to the
Notes other than the Class VII-A Notes, at the written direction of the Holders
of a majority of the aggregate Note Principal Balances of the Notes, or (ii)
with respect to the Class VII-A Notes, so long as the Insurer is not in default
under the Insurance Policy, at the written direction of the Insurer or the
Holders of the majority of the aggregate Note Principal Balance of the Class
VII-A Notes with the consent of the Insurer, do one or more of the following
(subject to Section 5.05 hereof):


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<PAGE>


                  (i)      institute Proceedings in its own name and as trustee
         of an express trust for the collection of all amounts then payable on
         the Notes or under this Indenture with respect thereto, whether by
         declaration or otherwise, enforce any judgment obtained, and collect
         from the Issuer and any other obligor upon such Notes monies adjudged
         due;

                  (ii)     institute Proceedings from time to time for the
         complete or partial foreclosure of this Indenture with respect to the
         Trust Estate;

                  (iii)    exercise any remedies of a secured party under the
         UCC and take any other appropriate action to protect and enforce the
         rights and remedies of the Indenture Trustee and the Holders of the
         Notes; and

                  (iv)     sell the Trust Estate or any portion thereof or
         rights or interest therein, at one or more public or private sales
         called and conducted in any manner permitted by law;

provided, however, that the Indenture Trustee may not sell or otherwise
liquidate the Trust Estate following an Event of Default, unless (A) the
Indenture Trustee obtains the consent of the Insurer or the Holders of 100% of
the aggregate Note Principal Balance of the Notes then outstanding, (B) the
proceeds of such sale or liquidation distributable to the Holders of the Notes
are sufficient to discharge in full all amounts then due and unpaid upon such
Notes for principal and interest or (C) the Indenture Trustee determines that
the Mortgage Loans will not continue to provide sufficient funds for the payment
of principal of and interest on the applicable Notes as they would have become
due if the Notes had not been declared due and payable, and the Indenture
Trustee, respecting the Class VII-A Notes, obtains the consent of the Insurer
or, respecting the Notes other than the Class VII-A Notes, the Holders of 66
2/3% of the aggregate Note Principal Balance of the Notes then outstanding. In
determining such sufficiency or insufficiency with respect to clause (B) and
(C), the Indenture Trustee may, but need not, obtain and rely upon an opinion
(obtained at the expense of the Trust) of an Independent investment banking or
accounting firm of national reputation as to the feasibility of such proposed
action and as to the sufficiency of the Trust Estate for such purpose.
Notwithstanding the foregoing, so long as an Event of Master Servicer
Termination has not occurred, any Sale of the Trust Estate shall be made subject
to the continued servicing of the Mortgage Loans by the related Master Servicer
as provided in the related Servicing Agreement.

         (b)      If the Indenture Trustee collects any money or property with
respect to the Group I Mortgage Loans, Group II Mortgage Loans, Group III
Mortgage Loans, Group IV Loans or Group V Mortgage Loans pursuant to this
Article V, it shall pay out the money or property in the following order as
determined for each Loan Group:

                  FIRST: to the Indenture Trustee and RMBS Master Servicer for
amounts due and not previously paid in respect of the Mortgage Loans in that
Loan Group;

                  SECOND: to the Derivative Contract Counterparty, the Net Swap
Fee for such Payment Date, other than any Additional Derivative Counterparty
Payment;


                                       68
<PAGE>


                  THIRD: to the related Noteholders (other than the Class N
Noteholders), the amount of interest then due and unpaid on the related Notes
(other than Basis Risk Shortfall Carry-Forward Amounts and Net WAC Shortfall
Carry-Forward Amounts), first, to the Class A Noteholders from related Available
Funds, the related Accrued Note Interest for such Class, plus any related Unpaid
Interest Shortfalls, with any amounts payable to the Class I-A Notes payable to
the Class I-A-1 Notes and Class I-A-2 Notes, pro rata, and with any amounts
payable to the Class II-A Notes payable to the Class II-A-1 Notes and Class
II-A-2 Notes, pro rata, and second, from any remaining Available Funds for all
Loan Groups, to the Class M Noteholders, sequentially, according to the amounts
due and payable on the Notes for interest;

                  FOURTH: to the related Noteholders (other than the Class N
Noteholders) the amount of principal then due and unpaid on the related Notes,
and to each Noteholder (other than the Class N Noteholders), pro rata, without
preference or priority of any kind, until the Note Principal Balance of each
such Class is reduced to zero;

                  FIFTH: to the Class I-A-2, Class II-A-2 and Class M Notes, in
order of payment priority, the amount of any related Allocated Realized Loss
Amount not previously paid;

                  SIXTH: to the related Notes, in order of payment priority, the
amount of any related Basis Risk Shortfall Carry-Forward Amounts and Net WAC
Shortfall Carry-Forward Amounts, as applicable, not previously paid; and

                  SEVENTH: to the holders of the Class N Notes, any Accrued Note
Interest for such Notes on such Payment Date;

                  EIGHTH: to the holders of the Class N Notes, in reduction of
the Note Principal Balance thereof, until reduced to zero;

                  NINTH: to the Derivative Contract Counterparty, any Additional
Derivative Contract Counterparty Payment; and

                  TENTH: to the payment of the remainder, if any, to the holders
of the Trust Certificates on behalf of the Issuer.

         (c)      If the Indenture Trustee collects any money or property with
respect to the Group VI Mortgage Loans pursuant to this Article V, it shall pay
out the money or property in the following order as determined for each Loan
Group:

                  FIRST: to the Indenture Trustee and RMBS Master Servicer for
amounts due and not previously paid in respect of the Mortgage Loans in that
Loan Group;

                  SECOND: to the related Noteholders (other than the Class N
Noteholders), the amount of interest then due and unpaid on the related Notes
(other than Basis Risk Shortfall Carry-Forward Amounts and Net WAC Shortfall
Carry-Forward Amounts), to the Class VI-A, Class VI-M and Class VI-B Noteholders
pro rata from related Available Funds, the related Accrued Note Interest for
such Class, plus any related Unpaid Interest Shortfalls, with any


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amounts payable to the Class VI-A Notes payable to the Class VI-A-1 Notes and
Class I-A-2 Notes, sequentially;

                  THIRD: to the related Noteholders (other than the Class N
Noteholders) the amount of principal then due and unpaid on the related Notes,
and to each Noteholder (other than the Class N Noteholders), pro rata, without
preference or priority of any kind, until the Note Principal Balance of each
such Class is reduced to zero;

                  FOURTH: to the related Class VI-M Notes and Class VI-B Notes,
in order of payment priority, the amount of any related Allocated Realized Loss
Amount not previously paid;

                  FIFTH: to the related Notes, in order of payment priority, the
amount of any related Basis Risk Shortfall Carry-Forward Amounts and Net WAC
Shortfall Carry-Forward Amounts, as applicable, not previously paid; and

                  SIXTH: to the holders of the Class N Notes, any Accrued Note
Interest for such Notes on such Payment Date;

                  SEVENTH: to the holders of the Class N Notes, in reduction of
the Note Principal Balance thereof, until reduced to zero; and

                  EIGHTH: to the payment of the remainder, if any, to the
holders of the Trust Certificates on behalf of the Issuer.

         (d)      If the Indenture Trustee collects any money or property with
respect to the Group VII Mortgage Loans pursuant to this Article V, it shall pay
out the money or property in the following order as determined for each Loan
Group:

                  FIRST: to the Indenture Trustee and HELOC Master Servicer for
amounts due and not previously paid in respect of the HELOC Mortgage Loans in
that Loan Group;

                  SECOND: to the Insurer, provided that no Insurer Default
exists, with respect to the reimbursement for prior draws made under the
Insurance Policy and the payment of all amounts due and owing to the Insurer
under the Insurance Agreement;

                  THIRD: to the Class VII-A Noteholders, accrued interest and
unpaid interest, in each case accrued at the rate equal to the related Note
Interest Rate;

                  FOURTH: to the Class VII-A Notes, the amount of principal then
due and unpaid on the Class VII-A Notes pro rata, without preference or priority
of any kind, until the Note Principal Balance of such Class is reduced to zero;

                  FIFTH: to the Class VII-A Noteholders, the amount of any
Investor Charge-Off Amounts not previously paid;


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                  SIXTH: to the Class VII-A Noteholders, the amount of any
related Basis Risk Shortfall Carry-Forward Amounts not previously paid; and

                  SEVENTH: to the payment of the remainder, if any, to the
holders of the Trust Certificates on behalf of the Issuer.

         The Indenture Trustee may fix a record date and Payment Date for any
payment to Noteholders pursuant to this Section 5.04. With respect to any
acceleration at the direction of the Insurer, the first Payment Date after the
acceleration shall be the first Payment Date after the acceleration. At least 15
days before such record date, the Indenture Trustee shall mail to each
Noteholder a notice that states the record date, the Payment Date and the amount
to be paid.

         Section 5.05 Optional Preservation of the Trust Estate. If the Notes
have been declared to be due and payable under Section 5.02 following an Event
of Default and such declaration and its consequences have not been rescinded and
annulled, the Indenture Trustee may, with the consent of the Insurer (which
consent shall not be required if an Insurer Default exists), and shall, at the
written direction of the Insurer so long as no Insurer Default exists, elect to
take and maintain possession of the Trust Estate. It is the desire of the
parties hereto and the Noteholders that there be at all times sufficient funds
for the payment of principal of and interest on the Notes and other obligations
of the Issuer, and the Insurer and the Indenture Trustee, unless directed
otherwise by the Insurer, shall take such desire into account when determining
whether or not to take and maintain possession of the Trust Estate. In
determining whether to take and maintain possession of the Trust Estate, the
Indenture Trustee may, but need not, obtain and rely upon an opinion of an
Independent investment banking or accounting firm of national reputation as to
the feasibility of such proposed action and as to the sufficiency of the Trust
Estate for such purpose.

         Section 5.06 Limitation of Suits. No Holder of any Note, other than the
Insurer acting pursuant to Section 4.12 hereof, shall have any right to
institute any Proceeding, judicial or otherwise, with respect to this Indenture,
or for the appointment of a receiver or trustee, or for any other remedy
hereunder, unless and subject to the provisions of Section 10.16 hereof:

                  (i)      such Holder has previously given written notice to
         the Indenture Trustee of a continuing Event of Default;

                  (ii)     the Holders of not less than 25% of the aggregate
         Note Principal Balances of the Notes have made a written request to the
         Indenture Trustee to institute such Proceeding in respect of such Event
         of Default in its own name as Indenture Trustee hereunder;

                  (iii)    such Holder or Holders have offered to the Indenture
         Trustee reasonable indemnity against the costs, expenses and
         liabilities to be incurred in complying with such request;

                  (iv)     the Indenture Trustee, for 60 days after its receipt
         of such notice of request and offer of indemnity, has failed to
         institute such Proceedings;


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<PAGE>


                  (v)      no direction inconsistent with such written request
         has been given to the Indenture Trustee during such 60-day period by
         the Holders of a majority of the Note Principal Balances of the Notes;
         and

                  (vi)     such Holder or Holders have the written consent of
         the Insurer unless a Insurer Default exists

                  (vii)    It is understood and intended that no one or more
         Holders of Notes shall have any right in any manner whatever by virtue
         of, or by availing of, any provision of this Indenture to affect,
         disturb or prejudice the rights of any other Holders of Notes or to
         obtain or to seek to obtain priority or preference over any other
         Holders or to enforce any right under this Indenture, except in the
         manner herein provided.

         Subject to the last paragraph of Section 5.11 herein, in the event the
Indenture Trustee shall receive conflicting or inconsistent requests and
indemnity from two or more groups of Holders of Notes, each representing less
than a majority of the Note Principal Balances of the Notes, the Indenture
Trustee in its sole discretion may determine what action, if any, shall be
taken, notwithstanding any other provisions of this Indenture.

         Section 5.07 Unconditional Rights of Noteholders To Receive Principal
and Interest. Notwithstanding any other provisions in this Indenture, the Holder
of any Note shall have the right, which is absolute and unconditional, to
receive payment of the principal of and interest, if any, on such Note on or
after the respective due dates thereof expressed in such Note or in this
Indenture and to institute suit for the enforcement of any such payment, and
such right shall not be impaired without the consent of such Holder.

         Section 5.08 Restoration of Rights and Remedies. If the Indenture
Trustee or any Noteholder has instituted any Proceeding to enforce any right or
remedy under this Indenture and such Proceeding has been discontinued or
abandoned for any reason or has been determined adversely to the Indenture
Trustee, the Insurer or to such Noteholder, then and in every such case the
Issuer, the Indenture Trustee, the Insurer and the Noteholders shall, subject to
any determination in such Proceeding, be restored severally and respectively to
their former positions hereunder, and thereafter all rights and remedies of the
Indenture Trustee, the Insurer and the Noteholders shall continue as though no
such Proceeding had been instituted.

         Section 5.09 Rights and Remedies Cumulative. No right or remedy herein
conferred upon or reserved to the Indenture Trustee, the Insurer or to the
Noteholders is intended to be exclusive of any other right or remedy, and every
right and remedy shall, to the extent permitted by law, be cumulative and in
addition to every other right and remedy given hereunder or now or hereafter
existing at law or in equity or otherwise. The assertion or employment of any
right or remedy hereunder, or otherwise, shall not prevent the concurrent
assertion or employment of any other appropriate right or remedy.

         Section 5.10 Delay or Omission Not a Waiver. No delay or omission of
the Indenture Trustee, the Insurer or any Holder of any Note to exercise any
right or remedy accruing upon any Event of Default shall impair any such right
or remedy or constitute a waiver of any such Event of


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Default or an acquiescence therein. Every right and remedy given by this Article
V or by law to the Indenture Trustee, the Insurer or to the Noteholders may be
exercised from time to time, and as often as may be deemed expedient, by the
Indenture Trustee, the Insurer or by the Noteholders, as the case may be.

         Section 5.11 Control By Noteholders. (i) With respect to the Notes
other than the Class VII-A Notes, the Holders of a majority of the aggregate
Note Principal Balances of Notes or (ii) with respect to the Class VII-A Notes,
the Insurer, so long as the Insurer is not in default under the Insurance
Policy, or the holders of the majority of the aggregate Note Principal Balance
of the Class VII-A Notes with the consent of the Insurer, shall have the right
to direct the time, method and place of conducting any Proceeding for any remedy
available to the Indenture Trustee with respect to the related Notes or
exercising any trust or power conferred on the Indenture Trustee; provided that:

         (a)      such direction shall not be in conflict with any rule of law
or with this Indenture;

         (b)      any direction to the Indenture Trustee to sell or liquidate
the Trust Estate shall be by Holders of Notes representing not less than 100% of
the Note Principal Balances of the Notes; and

         (c)      the Indenture Trustee may take any other action deemed proper
by the Indenture Trustee that is not inconsistent with such direction of the
Holders of Notes representing a majority of the Note Principal Balances of the
Notes.

Notwithstanding the rights of Noteholders set forth in this Section 5.11 the
Indenture Trustee need not take any action that it determines might involve it
in liability.

         Section 5.12 Waiver of Past Defaults. Prior to the declaration of the
acceleration of the maturity of the Notes as provided in Section 5.02 hereof,
(i) with respect to the Notes other than Class VII-A Notes, the Holders of Notes
representing not less than a majority of the aggregate Note Principal Balance of
each Class of Notes or (ii) with respect to the Class VII-A Notes, so long as
the Insurer is not in default under the Insurance Policy, the Insurer or the
Holder of the majority of the aggregate Note Principal Balance of the Class
VII-A Notes with the consent of the Insurer may waive any past Event of Default
and its consequences except an Event of Default (a) with respect to payment of
principal of or interest on any of the Notes, or (b) in respect of a covenant or
provision hereof which cannot be modified or amended without the consent of the
Holder of each Note or (c) the waiver of which would materially and adversely
affect the interests of the Insurer or modify its obligations under the
Insurance Policy. In the case of any such waiver, the Issuer, the Indenture
Trustee and the Holders of the Notes shall be restored to their former positions
and rights hereunder, respectively, but no such waiver shall extend to any
subsequent or other Event of Default or impair any right consequent thereto.

         Upon any such waiver, any Event of Default arising therefrom shall be
deemed to have been cured and not to have occurred for every purpose of this
Indenture; but no such waiver shall extend to any subsequent or other Event of
Default or impair any right consequent thereto.


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<PAGE>


         Section 5.13 Undertaking for Costs. All parties to this Indenture
agree, and each Holder of any Note and each Beneficial Owner of any interest
therein by such Holder's or Beneficial Owner's acceptance thereof shall be
deemed to have agreed, that any court may in its discretion require, in any suit
for the enforcement of any right or remedy under this Indenture, or in any suit
against the Indenture Trustee for any action taken, suffered or omitted by it as
Indenture Trustee, the filing by any party litigant in such suit of an
undertaking to pay the costs of such suit, and that such court may in its
discretion assess reasonable costs, including reasonable attorneys' fees,
against any party litigant in such suit, having due regard to the merits and
good faith of the claims or defenses made by such party litigant; but the
provisions of this Section 5.13 shall not apply to (a) any suit instituted by
the Indenture Trustee, (b) any suit instituted by any Noteholder, or group of
Noteholders, in each case holding in the aggregate more than 10% of the Note
Principal Balances of the Notes or (c) any suit instituted by any Noteholder for
the enforcement of the payment of principal of or interest on any Note on or
after the respective due dates expressed in such Note and in this Indenture.

         Section 5.14 Waiver of Stay or Extension Laws. The Issuer covenants (to
the extent that it may lawfully do so) that it will not at any time insist upon,
or plead or in any manner whatsoever, claim or take the benefit or advantage of,
any stay or extension law wherever enacted, now or at any time hereafter in
force, that may affect the covenants or the performance of this Indenture; and
the Issuer (to the extent that it may lawfully do so) hereby expressly waives
all benefit or advantage of any such law, and covenants that it shall not
hinder, delay or impede the execution of any power herein granted to the
Indenture Trustee, but will suffer and permit the execution of every such power
as though no such law had been enacted.

         Section 5.15 Sale of Trust Estate.

         (a)      The power to effect any sale or other disposition (a "Sale")
of any portion of the Trust Estate pursuant to Section 5.04 hereof is expressly
subject to the provisions of Sections 5.05 and 5.11(b) hereof and this Section
5.15. The power to effect any such Sale shall not be exhausted by any one or
more Sales as to any portion of the Trust Estate remaining unsold, but shall
continue unimpaired until the entire Trust Estate shall have been sold or all
amounts payable on the Notes and under this Indenture shall have been paid. The
Indenture Trustee may from time to time postpone any public Sale by public
announcement made at the time and place of such Sale. The Indenture Trustee,
with the consent of the Insurer (which consent shall not be required if a
Insurer Default exists), hereby expressly waives its right to any amount fixed
by law as compensation for any Sale.

         (b)      The Indenture Trustee shall not in any private Sale sell the
Trust Estate, or any portion thereof, unless

         (1)      the Insurer, unless an Insurer Default exists, or the Holders
of all Notes, if no Insurer Default exists, consent to or direct the Indenture
Trustee to make, such Sale, or

         (2)      the proceeds of such Sale would be not less than the entire
amount which would be payable to the Noteholders under the Notes and the Insurer
in respect to amounts drawn under the Insurance Policy and any other amounts due
to the Insurer under the Insurance Agreement, in


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<PAGE>


full payment thereof in accordance with Section 5.02 hereof, on the Payment Date
next succeeding the date of such Sale, or

         (3)      the Indenture Trustee determines that the conditions for
retention of the Trust Estate set forth in Section 5.05 hereof cannot be
satisfied (in making any such determination, the Indenture Trustee may rely upon
an opinion of an Independent investment banking firm obtained and delivered as
provided in Section 5.05 hereof), and the Insurer consents to such Sale, or if a
Insurer Default exits, the Holders of Notes representing at least 100% of the
Note Principal Balances of the Notes consent to such Sale.

The purchase by the Indenture Trustee of all or any portion of the Trust Estate
at a private Sale shall not be deemed a Sale or other disposition thereof for
purposes of this Section 5.15(b).

         (c)      Unless the Insurer, or if a Insurer Default exists, the
Holders representing at least 66-2/3% of the Note Principal Balances of the
Notes have otherwise consented or directed the Indenture Trustee, at any public
Sale of all or any portion of the Trust Estate at which a minimum bid equal to
or greater than the amount described in paragraph (2) of subsection (b) of this
Section 5.15 has not been established by the Indenture Trustee and no Person
bids an amount equal to or greater than such amount, the Indenture Trustee, as
trustee for the benefit of the Holders of the Notes, shall bid an amount at
least $1.00 more than the highest other bid.

         (d)      In connection with a Sale of all or any portion of the Trust
Estate,

         (1)      any Holder or Holders of Notes may bid for and purchase the
property offered for sale, and upon compliance with the terms of sale may hold,
retain and possess and dispose of such property, without further accountability,
and may, in paying the purchase money therefor, deliver any Notes or claims for
interest thereon in lieu of cash up to the amount which shall, upon distribution
of the net proceeds of such sale, be payable thereon, and such Notes, in case
the amounts so payable thereon shall be less than the amount due thereon, shall
be returned to the Holders thereof after being appropriately stamped to show
such partial payment;

         (2)      the Indenture Trustee, with the consent of the Insurer so long
as no Insurer Default exists may bid for and acquire the property offered for
Sale in connection with any Sale thereof, and, subject to any requirements of,
and to the extent permitted by, applicable law in connection therewith, may
purchase all or any portion of the Trust Estate in a private sale, and, in lieu
of paying cash therefor, may make settlement for the purchase price by crediting
the gross Sale price against the sum of (A) the amount which would be
distributable to the Holders of the Notes and Holders of Certificates and
amounts distributable to the Insurer as a result of such Sale in accordance with
Section 5.04(b) hereof on the Payment Date next succeeding the date of such Sale
and (B) the expenses of the Sale and of any Proceedings in connection therewith
which are reimbursable to it, without being required to produce the Notes in
order to complete any such Sale or in order for the net Sale price to be
credited against such Notes, and any property so acquired by the Indenture
Trustee shall be held and dealt with by it in accordance with the provisions of
this Indenture;


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<PAGE>


         (3)      the Indenture Trustee shall execute and deliver an appropriate
instrument of conveyance, prepared by the Issuer and satisfactory to the
Indenture Trustee, transferring its interest in any portion of the Trust Estate
in connection with a Sale thereof;

         (4)      the Indenture Trustee is hereby irrevocably appointed the
agent and attorney-in-fact of the Issuer to transfer and convey its interest in
any portion of the Trust Estate in connection with a Sale thereof, and to take
all action necessary to effect such Sale; and

         (5)      no purchaser or transferee at such a Sale shall be bound to
ascertain the Indenture Trustee's authority, inquire into the satisfaction of
any conditions precedent or see to the application of any monies.

         Section 5.16 Action on Notes. The Indenture Trustee's right to seek and
recover judgment on the Notes or under this Indenture shall not be affected by
the seeking, obtaining or application of any other relief under or with respect
to this Indenture. Neither the lien of this Indenture nor any rights or remedies
of the Indenture Trustee or the Noteholders shall be impaired by the recovery of
any judgment by the Indenture Trustee against the Issuer or by the levy of any
execution under such judgment upon any portion of the Trust Estate or upon any
of the assets of the Issuer. Any money or property collected by the Indenture
Trustee shall be applied in accordance with Section 5.04(b) hereof.

         Section 5.17 Performance and Enforcement of Certain Obligations.

         (a)      Promptly following a request from the Indenture Trustee to do
so, the Issuer in its capacity as holder of the Mortgage Loans and HELOC
Mortgage Loans, shall take all such lawful action as the Indenture Trustee or
the Insurer may request to cause the Issuer to compel or secure the performance
and observance by the Seller and the related Master Servicer, as applicable, of
each of their obligations to the Issuer under or in connection with the Mortgage
Loan Purchase Agreement, any Group I, Group II, Group III, Group IV, Group V,
Group VI, Group VII Subsequent Mortgage Purchase Agreement, the Servicing
Agreements, and to exercise any and all rights, remedies, powers and privileges
lawfully available to the Issuer under or in connection with the Mortgage Loan
Purchase Agreement, any Group I, Group II, Group III, Group IV, Group V, Group
VI, Group VII Subsequent Mortgage Purchase Agreement , the Servicing Agreements
to the extent and in the manner directed by the Indenture Trustee, as pledgee of
the Mortgage Loans, including the transmission of notices of default on the part
of the Seller or the related Master Servicer thereunder and the institution of
legal or administrative actions or proceedings to compel or secure performance
by the Seller or the related Master Servicer of each of their obligations under
the Mortgage Loan Purchase Agreement, any Group I, Group II, Group III, Group
IV, Group V, Group VI, Group VII Subsequent Mortgage Purchase Agreement and the
Servicing Agreements, as applicable.

         (b)      The Indenture Trustee, as pledgee of the Mortgage Loans,
subject to the rights of the Insurer under this Agreement and the HELOC
Servicing Agreement, may, and at the direction (which direction shall be in
writing) of the Insurer of if a Insurer Default exists, of the Holders of
66-2/3% of the Note Principal Balances of the Notes, shall exercise all rights,
remedies, powers, privileges and claims of the Issuer against the Seller or the
related Master Servicer under or in


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<PAGE>


connection with the Mortgage Loan Purchase Agreement, any Group I, Group II,
Group III, Group IV, Group V, Group VI, Group VII Subsequent Mortgage Purchase
Agreement and the Servicing Agreements, including the right or power to take any
action to compel or secure performance or observance by the Seller or the
related Master Servicer, as the case may be, of each of their obligations to the
Issuer thereunder and to give any consent, request, notice, direction, approval,
extension or waiver under the Mortgage Loan Purchase Agreement, any Group I,
Group II, Group III, Group IV, Group V, Group VI, Group VII Subsequent Mortgage
Purchase Agreement and the Servicing Agreements, as the case may be, and any
right of the Issuer to take such action shall not be suspended.

                                   ARTICLE VI

                              The Indenture Trustee

         Section 6.01 Duties of Indenture Trustee.

         (a)      If an Event of Default has occurred and is continuing, the
Indenture Trustee shall exercise the rights and powers vested in it by this
Indenture 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.

         (b)      Except during the continuance of an Event of Default:

                  (i)      the Indenture Trustee undertakes to perform such
         duties and only such duties as are specifically set forth in this
         Indenture and no implied covenants or obligations shall be read into
         this Indenture against the Indenture Trustee; and

                  (ii)     in the absence of bad faith on its part, the
         Indenture Trustee may conclusively rely, as to the truth of the
         statements and the correctness of the opinions expressed therein, upon
         certificates, reports, documents, Issuer Requests or other instruments
         or opinions furnished to the Indenture Trustee and conforming to the
         requirements of this Indenture; however, the Indenture Trustee shall
         examine the certificates, reports, documents, Issuer Requests or other
         instruments and opinions to determine whether or not they conform to
         the requirements of this Indenture (but need not confirm or investigate
         the accuracy of mathematical calculations or other facts stated
         therein).

         (c)      The Indenture Trustee may not be relieved from liability for
its own negligent action, its own negligent failure to act or its own willful
misconduct, except that:

                  (i)      this paragraph does not limit the effect of paragraph
         (b) of this Section 6.01;

                  (ii)     the Indenture Trustee shall not be liable for any
         error of judgment made in good faith by a Responsible Officer unless it
         is proved that the Indenture Trustee was negligent in ascertaining the
         pertinent facts; and


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<PAGE>


                  (iii)    the Indenture Trustee shall not be liable with
         respect to any action it takes or omits to take in good faith in
         accordance with a written direction received by it from Noteholders,
         the Certificateholders or from the Issuer, which they are entitled to
         give under the Basic Documents or (B) from the Insurer, which it is
         entitled to give under the Basic Documents.

                  (iv)     (d) The Indenture Trustee shall not be liable for
         interest on any money received by it except as set forth in the Basic
         Documents and as the Indenture Trustee may agree in writing with the
         Issuer.

                  (v)      (e) Money held in trust by the Indenture Trustee need
         not be segregated from other trust funds except to the extent required
         by law or the terms of this Indenture or the Trust Agreement.

                  (vi)     (f) No provision of this Indenture or other Basic
         Document shall require the Indenture Trustee to expend or risk its own
         funds or otherwise incur financial liability in the performance of any
         of its duties hereunder or in the exercise of any of its rights or
         powers, if it shall have reasonable grounds to believe that repayment
         of such funds or adequate indemnity against such risk or liability is
         not reasonably assured to it.

                  (vii)    (g) Every provision of this Indenture or other Basic
         Document relating to the conduct or affecting the liability of or
         affording protection to the Indenture Trustee shall be subject to the
         provisions of this Section and to the provisions of the TIA.

                  (viii)   (h) The Indenture Trustee shall execute and act in
         accordance with Sections 6.03 and 6.04 of each Servicing Agreement and
         shall act as successor to the related Master Servicer or appoint a
         successor Master Servicer in accordance with Section 6.02 of the
         Servicing Agreement; in no event however, shall the Indenture Trustee
         have any liability for any act or omission of the any Master Servicer,
         any Subservicer, the Owner Trustee or the Custodian. (ix) (i) The
         Indenture Trustee shall not be deemed to have notice or knowledge of
         any Default or Event of Default, any Servicer Default, Insurer Default
         or other event unless a Responsible Officer of the Indenture Trustee
         has actual knowledge thereof or unless written notice of any such event
         that is in fact an Event of Default, Default, Servicer Default, Insurer
         Default or other event is received by the Indenture Trustee at its
         Corporate Trust Office and such notice references the Notes or
         Certificates generally, the Issuer, the Trust Estate or this Indenture.

         Section 6.02 Rights of Indenture Trustee.

         (a)      The Indenture Trustee may rely conclusively on and shall be
protected in acting or refraining from acting upon any resolution, certificate,
statement, instrument, opinion, report, notice, request, direction, consent,
order, bond, debenture, note, other evidence of indebtedness or other paper or
document believed by it to be genuine and to have been signed or presented by.


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<PAGE>


the proper Person, party or parties. The Indenture Trustee need not investigate
any fact or matter stated in any such document.

         (b)      Before the Indenture Trustee acts or refrains from acting, it
may require an Officer's Certificate or an Opinion of Counsel. The Indenture
Trustee shall not be liable for any action it takes or omits to take in good
faith in reliance on and in accordance with an Officer's Certificate or Opinion
of Counsel.

         (c)      Subject to the provisions of Section 6.01(c), the Indenture
Trustee shall not be liable for any action it takes or omits to take in good
faith which it believes to be authorized or within its rights or powers.

         (d)      The Indenture Trustee may consult with counsel of its
selection, and the written advice or Opinion of Counsel with respect to legal
matters relating to this Indenture and the Notes or any Basic Document shall be
full and complete authorization and protection from liability in respect to any
action taken, omitted or suffered by it hereunder in good faith and in
accordance with the written advice or Opinion of such counsel.

         (e)      For the limited purpose of effecting any action to be
undertaken by the Indenture Trustee, but not specifically as a duty of the
Indenture Trustee in the Indenture, the Indenture Trustee may execute any of the
trusts or powers hereunder or perform any duties hereunder, either directly or
by or through agents, attorneys, custodians or nominees appointed with due care,
and shall not be responsible for any willful misconduct or negligence on the
part of any agent, attorney, custodian or nominee so appointed.

         (f)      The Indenture Trustee or its Affiliates are permitted to
receive additional compensation that could be deemed to be in the Indenture
Trustee's economic self-interest for (i) serving as investment adviser,
administrator, shareholder servicing agent, custodian or sub-custodian with
respect to certain of the Eligible Investments, (ii) using Affiliates to effect
transactions in certain Eligible Investments and (iii) effecting transactions in
certain Eligible Investments. Such compensation shall not be considered an
amount, or effect a reduction in any amount, that is reimbursable or payable to
the Indenture Trustee (i) as part of the Indenture Trustee Fee, (ii) pursuant to
Sections 5.04(b), 6.07, 8.02(c), 8.05(a) or 8.07 hereunder or (iii) out of
Available Funds.

         (g)      In order to comply with its duties under the Uniting and
Strengthening America by Providing Appropriate Tools Required to Intercept and
Obstruct Terrorism Act of 2001 ("U.S.A. Patriot Act"), the Indenture Trustee
shall obtain and verify certain information and documentation from the other
party to this Indenture, including, but not limited to, such party's name,
address, and other identifying information.

         (h)      Whenever in the administration of this Indenture the Indenture
Trustee shall deem it desirable that a matter be proved or established prior to
taking, suffering or omitting any action hereunder, the Indenture Trustee
(unless other evidence be herein specifically prescribed) may, in the absence of
bad faith on its part, conclusively rely upon an Officer's Certificate of the
Issuer.


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<PAGE>


         (i)      The rights, privileges, protections, immunities and benefits
given to the Indenture Trustee, including, without limitation, its right to be
indemnified, are extended to, and shall be enforceable by, the Indenture Trustee
in each of its capacities hereunder, and to each custodian employed to act
hereunder.

         (j)      The Indenture Trustee may request that the Issuer deliver an
Officer's Certificate setting forth the names of individuals and/or titles of
officers authorized at such time to take specified actions pursuant to this
Indenture, which Officer's Certificate may be signed by any person authorized to
sign an Officer's Certificate, including any person specified as so authorized
in any such certificate previously delivered and not superseded.

         Section 6.03 Individual Rights of Indenture Trustee. The Indenture
Trustee in its individual or any other capacity may become the owner or pledgee
of Notes and may otherwise deal with the Issuer or its Affiliates with the same
rights it would have if it were not Indenture Trustee, subject to the
requirements of the Trust Indenture Act. Any Note Registrar, co-registrar or
co-paying agent may do the same with like rights. However, the Indenture Trustee
must comply with Sections 6.11 and 6.12 hereof.

         Section 6.04 Indenture Trustee's Disclaimer. The Indenture Trustee
shall not be responsible for and makes no representation as to the validity or
adequacy of this Indenture, the Notes or any other Basic Document, it shall not
be accountable for the Issuer's use of the proceeds from the Notes, and it shall
not be responsible for any statement of the Issuer in the Indenture or in any
document issued in connection with the sale of the Notes or in the Notes other
than the Indenture Trustee's certificate of authentication.

         Section 6.05 Notice of Event of Default. Subject to Section 5.01, the
Indenture Trustee shall promptly mail to each Noteholder and the Insurer notice
of the Event of Default after it is known to a Responsible Officer of the
Indenture Trustee, unless such Event of Default shall have been waived or cured.
Except in the case of an Event of Default in payment of principal of or interest
on any Note, the Indenture Trustee may withhold the notice if and so long as a
committee of its Responsible Officers in good faith determines that withholding
the notice is in the best interests of Noteholders.

         Section 6.06 Reports by Indenture Trustee to Holders and Tax
Administration. The Indenture Trustee shall deliver to each Noteholder such
information as may be required to enable such holder to prepare its federal and
state income tax returns.

         The Indenture Trustee shall prepare and file (or cause to be prepared
and filed), on behalf of the Owner Trustee, all tax returns (if any) and
information reports, tax elections and such annual or other reports of the
Issuer as are necessary for preparation of tax returns and information reports
as provided in Section 5.03 of the Trust Agreement, including without limitation
Form 1099. All tax returns and information reports shall be signed by the Owner
Trustee as provided in Section 5.03 of the Trust Agreement.

         Section 6.07 Compensation and Indemnity. The Issuer shall pay to the
Indenture Trustee on each Payment Date reasonable compensation for its services.
On each Payment Date


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<PAGE>


the Indenture Trustee shall be entitled to withdraw from the Payment Account,
the Indenture Trustee Fee for such Payment Date in accordance with Section 3.07
of the related Servicing Agreement. The Indenture Trustee's compensation shall
not be limited by any law on compensation of a trustee of an express trust. The
Issuer shall reimburse the Indenture Trustee as provided in Section 8.20(c) for
all reasonable out-of-pocket expenses incurred or made by it, including costs of
collection, in addition to compensation for its services. Such expenses shall
include reasonable compensation and expenses, disbursements and advances of the
Indenture Trustee's agents, counsel, accountants and experts. The Issuer shall
indemnify the Indenture Trustee as provided in Section 8.20(c) and the Insurer
against any and all loss, liability, claims, damage, costs or expense (including
attorneys' fees) incurred by it in connection with the administration of this
Trust and the performance of its duties hereunder and under the other Basic


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Documents. The Indenture Trustee shall notify the Issuer promptly of any claim
for which it may seek indemnity. Failure by the Indenture Trustee or the Insurer
to so notify the Issuer shall not relieve the Issuer of its obligations
hereunder. The Issuer shall defend any such claim, and the Indenture Trustee may
have separate counsel and the Issuer shall pay the fees and expenses of such
counsel. The Issuer is not obligated to reimburse any expense or indemnify
against any loss, liability or expense incurred by the Indenture Trustee or the
Insurer or any of its agents, counsel, accountants or experts through the
Indenture Trustee's or such agent's, counsel's, accountant's or expert's own
willful misconduct, negligence or bad faith.

         The Issuer's payment and indemnity obligations to the Indenture Trustee
pursuant to this Section 6.07 shall survive the discharge of this Indenture and
the termination or resignation of the Indenture Trustee. If the Indenture
Trustee incurs expenses after the occurrence of an Event of Default with respect
to the Issuer, the expenses are intended to constitute expenses of
administration under Title 11 of the United States Code or any other applicable
federal or state bankruptcy, insolvency or similar law.

         Section 6.08 Replacement of Indenture Trustee. No resignation or
removal of the Indenture Trustee and no appointment of a successor Indenture
Trustee shall become effective until the acceptance of appointment by the
successor Indenture Trustee pursuant to this Section 6.08. The Indenture Trustee
may resign at any time by so notifying the Issuer and the Insurer. The Insurer
or Holders of a majority of Note Principal Balances of each Class of Notes with
consent of the Insurer may remove the Indenture Trustee by so notifying the
Indenture Trustee and may appoint a successor Indenture Trustee. The Issuer,
with the consent of the Insurer, shall remove the Indenture Trustee if:

                  (i)      the Indenture Trustee fails to comply with or qualify
         pursuant to the provisions of Section 6.11 hereof;

                  (ii)     the Indenture Trustee is adjudged a bankrupt or
         insolvent;

                  (iii)    a receiver or other public officer takes charge of
         the Indenture Trustee or its property; or

                  (iv)     the Indenture Trustee otherwise becomes incapable of
         acting.


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<PAGE>


                  (v)      If the Indenture Trustee resigns or is removed or if
         a vacancy exists in the office of the Indenture Trustee for any reason
         (the Indenture Trustee in such event being referred to herein as the
         retiring Indenture Trustee), the Issuer shall promptly appoint a
         successor Indenture Trustee acceptable to the Insurer.

         A successor Indenture Trustee shall deliver a written acceptance of its
appointment to the retiring Indenture Trustee and to the Issuer. Thereupon, the
resignation or removal of the retiring Indenture Trustee shall become effective,
and the successor Indenture Trustee shall have all the rights, powers and duties
of the Indenture Trustee under this Indenture. The successor Indenture Trustee
shall mail a notice of its succession to Noteholders. The retiring Indenture
Trustee shall promptly transfer all property held by it as Indenture Trustee to
the successor Indenture Trustee.

         If a successor Indenture Trustee does not take office within 60 days
after the retiring Indenture Trustee resigns or is removed, the retiring
Indenture Trustee, the Issuer or the Holders of a majority of Note Principal
Balances of the Notes may petition any court of competent jurisdiction for the
appointment of a successor Indenture Trustee.

         Notwithstanding the replacement of the Indenture Trustee pursuant to
this Section, the Issuer's obligations under Section 6.07 shall continue for the
benefit of the retiring Indenture Trustee.

         Section 6.09 Successor Indenture Trustee by Merger. If the Indenture
Trustee consolidates with, merges or converts into, or transfers all or
substantially all of its corporate trust business or assets to, another
corporation, company or banking association, the resulting, surviving or
transferee corporation, without any further act, shall be the successor
Indenture Trustee; provided, that such corporation, company or banking
association shall be otherwise qualified and eligible under Section 6.11 hereof.
The Indenture Trustee shall provide the Rating Agencies, the Insurer and the
Issuer with prior written notice, and the Noteholders with prompt written
notice, of any such transaction.

         If at the time such successor or successors by merger, conversion or
consolidation to the Indenture Trustee shall succeed to the trusts created by
this Indenture and any of the Notes shall have been authenticated but not
delivered, any such successor to the Indenture Trustee may adopt the certificate
of authentication of any predecessor trustee and deliver such Notes so
authenticated; and if at that time any of the Notes shall not have been
authenticated, any successor to the Indenture Trustee may authenticate such
Notes either in the name of any predecessor hereunder or in the name of the
successor to the Indenture Trustee; and in all such cases such certificates
shall have the full force which is in the Notes or in this Indenture provided
that the certificate of the Indenture Trustee shall have.

         Section 6.10 Appointment of Co-Indenture Trustee or Separate Indenture
Trustee.

         (a)      Notwithstanding any other provisions of this Indenture, at any
time, for the purpose of meeting any legal requirement of any jurisdiction in
which any part of the Trust Estate may at the time be located, the Indenture
Trustee, with the consent of the Insurer, shall have the power and may execute
and deliver all instruments to appoint one or more Persons to act as a
co-


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trustee or co-trustees, or separate trustee or separate trustees, of all or any
part of the Trust Estate, and to vest in such Person or Persons, in such
capacity and for the benefit of the Noteholders, such title to the Trust Estate,
or any part hereof, and, subject to the other provisions of this Section, such
powers, duties, obligations, rights and trusts as the Indenture Trustee may
consider necessary or desirable. No co-trustee or separate trustee hereunder
shall be required to meet the terms of eligibility as a successor trustee under
Section 6.11 hereof.

         (b)      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)      all rights, powers, duties and obligations conferred
         or imposed upon the Indenture Trustee shall be conferred or imposed
         upon and exercised or performed by the Indenture 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 Indenture 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 the Indenture 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 Trust Estate 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 Indenture
         Trustee;

                  (ii)     no trustee hereunder shall be personally liable by
         reason of any act or omission of any other trustee hereunder; and

                  (iii)    the Indenture Trustee may at any time accept the
         resignation of or remove any separate trustee or co-trustee.

                  (iv)     Any notice, request or other writing given to the
         Indenture Trustee shall be deemed to have been given to each of the
         then separate trustees and co-trustees, as effectively as if given to
         each of them. Every instrument appointing any separate trustee or
         co-trustee shall refer to this Indenture and the conditions of this
         Article VI. 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
         Indenture Trustee or separately, as may be provided therein, subject to
         all the provisions of this Indenture, specifically including every
         provision of this Indenture relating to the conduct of, affecting the
         liability of, or affording protection to, the Indenture Trustee. Every
         such instrument shall be filed with the Indenture Trustee.

                  (v)      Any separate trustee or co-trustee may at any time
         constitute the Indenture 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 Indenture 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 Indenture Trustee, to the extent permitted by law, without the
         appointment of a new or successor trustee.


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<PAGE>


         Section 6.11 Eligibility; Disqualification. The Indenture Trustee shall
at all times satisfy the requirements of TIA ss. 310(a). The Indenture Trustee
shall have a combined capital and surplus of at least $50,000,000 as set forth
in its most recent published annual report of condition and it or its parent
shall have a long-term debt rating of Baa3 or better by Moody's and BBB or
better by Standard & Poor's. The Indenture Trustee shall comply with TIA ss.
310(b), including the optional provision permitted by the second sentence of TIA
ss. 310(b)(9); provided, however, that there shall be excluded from the
operation of TIA ss. 310(b)(1) any indenture or indentures under which other
securities of the Issuer are outstanding if the requirements for such exclusion
set forth in TIA ss. 310(b)(1) are met.

         Section 6.12 Preferential Collection of Claims Against Issuer. The
Indenture Trustee shall comply with TIA ss. 311(a), excluding any creditor
relationship listed in TIA ss. 311(b). An Indenture Trustee who has resigned or
been removed shall be subject to TIA ss. 311(a) to the extent indicated.

         Section 6.13 Representations and Warranties. The Indenture Trustee
hereby represents that:

         (a)      The Indenture Trustee is duly organized and validly existing
as a banking corporation in good standing under the laws of the State of New
York with power and authority to own its properties and to conduct its business
as such properties are currently owned and such business is presently conducted;

         (b)      The Indenture Trustee has the power and authority to execute
and deliver this Indenture and to carry out its terms; and the execution,
delivery and performance of this Indenture have been duly authorized by the
Indenture Trustee by all necessary corporate action;

         (c)      The consummation of the transactions contemplated by this
Indenture and the fulfillment of the terms hereof do not conflict with, result
in any breach of any of the terms and provisions of, or constitute (with or
without notice or lapse of time) a default under, the articles of incorporation
or bylaws of the Indenture Trustee or any agreement or other instrument to which
the Indenture Trustee is a party or by which it is bound; and

         (d)      To the Indenture Trustee's knowledge, there are no proceedings
or investigations pending or threatened before any court, regulatory body,
administrative agency or other governmental instrumentality having jurisdiction
over the Indenture Trustee or its properties: (A) asserting the invalidity of
this Indenture, (B) seeking to prevent the consummation of any of the
transactions contemplated by this Indenture or (C) seeking any determination or
ruling that might materially and adversely affect the performance by the
Indenture Trustee of its obligations under, or the validity or enforceability
of, this Indenture.

         Section 6.14 Directions to Indenture Trustee. The Indenture Trustee is
hereby directed:

         (a)      to accept the pledge of the Mortgage Loans and hold the assets
of the Trust Estate in trust for the Noteholders;


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<PAGE>


         (b)      to authenticate and deliver the Notes substantially in the
form prescribed by Exhibits A-1, A-2, A-3 and A-4 to this Indenture in
accordance with the terms of this Indenture; and

         (c)      to take all other actions as shall be required to be taken by
the terms of this Indenture.

         Section 6.15 The Agents. The provisions of this Indenture relating to
the limitations of the Indenture Trustee's liability and to its indemnity,
rights and protections shall inure also to the Paying Agent and Note Registrar.

         Section 6.16 Administrative Duties.

         (a)      The Indenture Trustee agrees to perform all of the duties of
the Issuer under the Depository Agreement. In addition to its duties performed
under the Depository Agreement, the Indenture Trustee shall take all appropriate
action that is the duty of the Issuer to take with respect to the following
matters under the Trust Agreement, the Mortgage Loan Purchase Agreement and the
Indenture (references are to sections of the Indenture):

                  (i)      The Indenture Trustee shall notify the Owner Trustee
         if the Indenture Trustee obtains actual knowledge or written notice
         that any withholding tax is imposed on the Trust's payments (or
         allocations of income) to a Certificateholder;

                  (ii)     the duty to cause the Note Register to be kept if the
         Issuer assumes the duties of Note Registrar, and to give the Indenture
         Trustee notice of any appointment of a new Note Registrar and the
         location, or change in location, of the Note Register (Section 4.02);

                  (iii)    causing the preparation of the Notes for execution by
         the Owner Trustee upon the registration of any transfer or exchange of
         the Notes or execution of a supplemental indenture (Sections 4.02, 4.03
         and 9.06);

                  (iv)     if requested, causing the preparation of an Issuer
         Request and related documents for authentication of the Notes,
         executing such Issuer Request on behalf of the Issuer and causing
         delivery of the same to the Indenture Trustee (Sections 4.02, 4.03 and
         4.08);

                  (v)      causing the preparation of Definitive Notes in
         accordance with the instructions of any Clearing Agency (including the
         preparation of any temporary notes) (Section 4.14);

                  (vi)     the maintenance of an office for registration of
         transfer or exchange of Notes (Section 3.02);

                  (vii)    the preparation of an Issuer Request required to
         appoint a Paying Agent, the preparation of written notice to the
         Indenture Trustee and the duty to cause newly


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<PAGE>


         appointed Paying Agents, if any, to execute and deliver to the
         Indenture Trustee the instrument specified in the Indenture regarding
         funds held in trust (Section 3.03);

                  (viii)   notifying the Paying Agent to pay to the Indenture
         Trustee all sums held in trust by the Paying Agent (Section 3.03);

                  (ix)     the execution of all supplements, amendments,
         financing statements, continuation statements, instruments of further
         assurance and other instruments necessary to protect the Collateral
         prepared by the Issuer and delivered to the Indenture Trustee for
         execution (Section 3.06);

                  (x)      the notification to the Owner Trustee of the Issuer's
         non-compliance with its negative covenants or restricted payment
         covenants upon actual knowledge by the Indenture Trustee of such
         non-compliance (Sections 3.09 and 3.25);

                  (xi)     the furnishing of the Indenture Trustee with the
         names and addresses of Holders of Notes during any period when the
         Indenture Trustee is not the Note Registrar (Section 7.01); and

                  (xii)    if necessary, the mailing to the Noteholders of
         notices with respect to their consent to any supplemental indentures
         (Section 9.02).

         (b)      In carrying out the foregoing duties or any of its other
obligations under this Indenture, the Indenture Trustee may enter into
transactions with or otherwise deal with any of its Affiliates; provided,
however, that the terms of any such transactions or dealings shall be in
accordance with any directions received from the Issuer and shall be, in the
Indenture Trustee's opinion, no less favorable to the Issuer than would be
available from unaffiliated parties.

         (c)      The Indenture Trustee in its capacity as the Certificate
Registrar, and upon a request received from the Owner Trustee, shall promptly
notify the Certificateholders of (i) any change in the Corporate Trust Office of
the Owner Trustee, (ii) any amendment to the Trust Agreement requiring notice be
given to the Certificateholders and (iii) any other notice required to be given
to the Certificateholders by the Owner Trustee under the Trust Agreement.

         (d)      With respect to matters that in the reasonable judgment of the
Indenture Trustee are non-ministerial, the Indenture Trustee shall not take any
action pursuant to this Article VII unless within a reasonable time before the
taking of such action, the Indenture Trustee shall have notified the Owner
Trustee, the Insurer and the Rating Agencies of the proposed action and the
Rating Agencies shall have notified the Issuer in writing that such transaction
shall not cause their respective ratings of the Notes, to be reduced, qualified,
suspended or withdrawn and the Owner Trustee shall not have withheld consent or
provided an alternative direction. For the purpose of the preceding sentence,
"non-ministerial matters" shall include:

                  (i)      the amendment of or any supplement to the Indenture;


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<PAGE>


                  (ii)     the initiation of any claim or lawsuit by the Issuer
         and the compromise of any action, claim or lawsuit brought by or
         against the Issuer (other than in connection with the collection of the
         Mortgage Loans);

                  (iii)    the amendment, change or modification of this
         Indenture or any of the other Basic Documents;

                  (iv)     the appointment of successor Certificate Paying
         Agents and successor Indenture Trustees pursuant to the Indenture or
         the appointment of successor Master Servicers or the consent to the
         assignment by the Certificate Registrar, Paying Agent or Indenture
         Trustee of its obligations under the Indenture; and

                  (v)      the removal of the Indenture Trustee.

         Section 6.17 Records. The Indenture Trustee shall maintain appropriate
books of account and records relating to services performed under this
Indenture, which books of account and records shall be accessible for inspection
by the Issuer at any time during normal business hours.

         Section 6.18 Additional Information to be Furnished. The Indenture
Trustee shall furnish to the Issuer or the Insurer from time to time such
additional information regarding the Mortgage Loans, the HELOC Mortgage Loans
and the Notes as the Issuer or the Insurer shall reasonably request.

         Section 6.19 Execution of Derivative Contracts and other Documents. The
Issuer hereby directs the Indenture Trustee to enter into and execute the Swap
Agreements, the Corridor Contracts and the Cap Contracts and make all
representations and warranties contained therein on behalf of the Trust. The
Issuer hereby directs the Indenture Trustee to enter into and execute the
Servicing Agreements and any related document. The Indenture Trustee hereby
acknowledges receipt by it of the Swap Agreements, the Corridor Contracts and
the Cap Contracts. Upon receipt thereof from the Derivative Contract
Counterparty under the Swap Agreements, the Corridor Contracts and the Cap
Contracts, the Indenture Trustee shall deposit into the Payment Account an
amount equal to all amounts actually received under the Swap Agreements, the
Corridor Contracts and the Cap Contracts and not previously deposited into the
Payment Account.

         Section 6.20 Indenture Trustee's Application For Instructions From the
Issuer.

         Any application by the Indenture Trustee for written instructions from
the Issuer may, at the option of the Indenture Trustee, set forth in writing any
action proposed to be taken or omitted by the Indenture Trustee under this
Indenture and the date on and/or after which such action shall be taken or such
omission shall be effective. The Indenture Trustee shall not be liable for any
action taken by, or omission of, the Indenture Trustee in accordance with a
proposal included in such application on or after the date specified in such
application (which date shall not be less than three Business Days after the
date any officer of the Issuer actually receives such application, unless any
such officer shall have consented in writing to any earlier


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<PAGE>


date) unless prior to taking any such action (or the effective date in the case
of an omission), the Indenture Trustee shall have received written instructions
in response to such application specifying the action to be taken or omitted.

         Section 6.21 Limitation of Liability.

         It is understood by the parties hereto other than the The Bank of New
York (the "Bank") that the sole recourse of the parties hereto other than the
Bank in respect of the obligations of the Trust hereunder and under the other
documents contemplated thereby and related thereto to which it is a party shall
be to the parties hereto other than the Bank. In addition, the Bank is entering
into this Indenture and the other documents contemplated thereby and related
thereto to which it is a party solely in its capacity as Indenture Trustee under
the Indenture and not in its individual capacity (except as expressly stated
herein) and in no case shall the Bank (or any Person acting as successor
Indenture Trustee under the Indenture) be personally liable for or on account of
any of the statements, representations, warranties, covenants or obligations
stated to be those of the Issuer hereunder or thereunder, all such liability, if
any, being expressly waived by the parties hereto and any person claiming by,
through or under such party, provided, however, that the Bank (or any such
successor Indenture Trustee) shall be personally liable hereunder and thereunder
for its own negligence or willful misconduct or for its material breach of its
covenants, representations and warranties contained herein or therein, to the
extent expressly covenanted or made in its individual capacity. In no event
shall the Indenture Trustee, in its capacity as Paying Agent, Note Registrar or
in any other capacity hereunder, be liable under or in connection with this
Indenture for indirect, special, incidental, punitive or consequential losses or
damages of any kind whatsoever, including but not limited to lost profits,
whether or not foreseeable, even if the Indenture Trustee has been advised of
the possibility thereof and regardless of the form of action in which such
damages are sought. The provisions of this section shall survive the termination
of the Indenture and the resignation or removal of the Indenture Trustee.

         Section 6.22 Assignment of Rights, Not Assumption of Duties.

         Anything herein contained to the contrary notwithstanding, (a) the
Issuer shall remain liable under this Indenture and each Basic Document to which
it is a party to the extent set forth therein to perform all of its duties and
obligations thereunder to the same extent as if this Indenture had not been
executed, (b) the exercise by the Indenture Trustee, the Insurer or any Holder
of any of their rights, remedies or powers hereunder shall not release the
Issuer from any of its duties or obligations under each of such documents to
which it is a party and (c) none of any Holder, the Insurer nor the Indenture
Trustee shall have any obligation or liability under any of such documents to
which the Issuer is a party by reason of or arising out of this Indenture, nor
shall any Holder, the Insurer or the Indenture Trustee be obligated to perform
any of the obligations or duties of the Issuer thereunder or, except as
expressly provided herein with respect to the Indenture Trustee, to take any
action to collect or enforce any claim for payment assigned hereunder or
otherwise.





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                                   ARTICLE VII

                         Noteholders' Lists and Reports

         Section 7.01 Issuer To Furnish Indenture Trustee Names and Addresses of
Noteholders. The Issuer will furnish or cause to be furnished to the Indenture
Trustee (a) not more than five days after each Record Date, a list, in such form
as the Indenture Trustee may reasonably require, of the names and addresses of
the Holders of Notes as of such Record Date, and (b) at such other times as the
Indenture Trustee may request in writing, within 30 days after receipt by the
Issuer of any such request, a list of similar form and content as of a date not
more than 10 days prior to the time such list is furnished; provided, however,
that so long as the Indenture Trustee is the Note Registrar, no such list shall
be required to be furnished to the Indenture Trustee.

         Section 7.02 Preservation of Information; Communications to
Noteholders.

         (a)      The Indenture Trustee shall preserve, in as current a form as
is reasonably practicable, the names and addresses of the Holders of Notes
contained in the most recent list furnished to the Indenture Trustee as provided
in Section 7.01 hereof and the names and addresses of Holders of Notes received
by the Indenture Trustee in its capacity as Note Registrar. The Indenture
Trustee may destroy any list furnished to it as provided in such Section 7.01
upon receipt of a new list so furnished.

         (b)      Noteholders may communicate pursuant to TIA ss. 312(b) with
other Noteholders with respect to their rights under this Indenture or under the
Notes.

         (c)      The Issuer, the Indenture Trustee and the Note Registrar shall
have the protection of TIA ss. 312(c).

         Section 7.03 Reports of Issuer. (a) Subject to Section 4.06 of the
Servicing Agreement,

         (a)      The Indenture Trustee shall file with the Commission on behalf
of the Issuer, with a copy to the Issuer and the Insurer within 15 days before
the Issuer is required to file the same with the Commission, the annual reports
and the information, documents and other reports (or such portions of any of the
foregoing as the Commission may from time to time by rules and regulations
prescribe) that the Issuer may be required to file with the Commission pursuant
to Sections 13 or 15(d) of the Exchange Act;

         (b)      The Indenture Trustee shall file with the Commission, on
behalf of the Issuer, in accordance with rules and regulations prescribed from
time to time by the Commission, such additional information, documents and
reports with respect to compliance by the Issuer with the conditions and
covenants of this Indenture as may be required from time to time by such rules
and regulations; and

         (c)      The Indenture Trustee shall supply (and the Indenture Trustee
shall transmit by mail to all Noteholders described in TIA ss. 313(c)) such
summaries of any information, documents


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and reports required to be filed by the Issuer pursuant to clauses (i) and (ii)
of this Section 7.03(a) and by rules and regulations prescribed from time to
time by the Commission.

         (d)      Unless the Issuer otherwise determines, the fiscal year of the
Issuer shall end on December 31 of each year.

         Section 7.04 Reports by Indenture Trustee. If required by TIA ss.
313(a), within 60 days after each January 30 beginning with March 31, 2005, the
Indenture Trustee shall mail to each Noteholder as required by TIA ss. 313(c) a
brief report dated as of such date that complies with TIA ss. 313(a). The
Indenture Trustee also shall comply with TIA ss. 313(b).

         A copy of each report at the time of its mailing to Noteholders shall
be filed by the Indenture Trustee with the Commission via EDGAR and each stock
exchange, if any, on which the Notes are listed. The Issuer shall notify the
Indenture Trustee if and when the Notes are listed on any stock exchange.

         Section 7.05 Statements to Noteholders. (a) With respect to each
Payment Date, the Indenture Trustee shall make available via the Indenture
Trustee's website, initially located at www.bnyinvestorreporting.com, to each
Noteholder and each Certificateholder, the Insurer, each Derivative Contract
Counterparty (or deliver at the recipient's option), the Depositor, the Owner
Trustee, the Certificate Paying Agent and each Rating Agency, a statement
setting forth the following information as to the Notes, to the extent
applicable:

                  (i)      the aggregate amount of collections with respect to
         the Mortgage Loans;

                  (ii)     the Group I Available Funds, Group II Available
         Funds, Group III Available Funds, Group IV Available Funds, Group V
         Available Funds, Group VI Available Funds, and Group VI Available Funds
         and Net Monthly Excess Cash Flow, with respect to the Group I, Group
         II, Group III, Group IV, Group V, Group VI and Group VII Loans, payable
         to each Class of Noteholders for such Payment Date, the Basis Risk
         Shortfall Carry-Forward Amount and Net WAC Shortfall Carry-Forward
         Amount on each Class of Notes for such Payment Date and the aggregate
         Unpaid Interest Shortfall on each Class of Notes for such Payment Date;

                  (iii)    (a) the amount of such distribution to each Class of
         Notes applied to reduce the Note Principal Balance thereof, and (b) the
         aggregate amount included therein representing Principal Prepayments;

                  (iv)     the Insured Payment, if any, paid by the Insurer
         under the Insurance Policy for such Payment Date and the aggregate
         Insured Payments for all prior Payment Dates paid by the Insurer under
         the Insurance Policy and not yet reimbursed;

                  (v)      the amount of such distribution to Holders of each
         Class of Notes allocable to interest;

                  (vi)     the amount of any distribution to the Certificates;


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                  (vii)    if the distribution to the Holders of any Class of
         Notes 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;

                  (viii)   the number and the aggregate Stated Principal Balance
         of the Mortgage Loans as of the end of the related Due Period,
         determined in the aggregate and separately for Loan Group I, Loan Group
         II, Loan Group III, Loan Group IV, Group V, Group VI and Loan Group
         VII;

                  (ix)     the aggregate Note Principal Balance of each Class of
         Notes, after giving effect to the amounts distributed on such Payment
         Date, separately identifying any reduction thereof due to Realized
         Losses and the aggregate Note Principal Balance of all of the Notes
         after giving effect to the distribution of principal on such Payment
         Date;

                  (x)      the number and aggregate Stated Principal Balances of
         Mortgage Loans (a) as to which the Monthly Payment is delinquent for
         31-60 days, 61-90 days, 91 or more days, respectively, (b) in
         foreclosure and (c) that have become REO Property, in each case as of
         the end of the preceding calendar month, determined in the aggregate
         and separately for Loan Group I, Loan Group II, Loan Group III, Loan
         Group IV, Group V, Group VI and Loan Group VII;

                  (xi)     the amount of payments from the Cap Contracts, the
         Corridor Contracts, the Group II Net Swap Agreement Payment Amount and
         the Group III Swap Agreement Payment Amount;

                  (xii)    the Overcollateralization Increase Amount with
         respect to each Loan Group, Overcollateralization Target Amount and
         Overcollateralized Amount, if any, in each case as the end of the
         related Payment Date, in each case as determined separately for each
         Loan Group;

                  (xiii)   the amount of any Advances and Compensating Interest
         payments;

                  (xiv)    the aggregate Realized Losses with respect to the
         related Payment Date and cumulative Realized Losses since the Closing
         Date;

                  (xv)     the number and aggregate Stated Principal Balance of
         Mortgage Loans repurchased pursuant to the Mortgage Loan Purchase
         Agreement for the related Payment Date and cumulatively since the
         Closing Date determined in the aggregate and separately for Loan Group
         I, Loan Group II, Loan Group III, Loan Group IV and Loan Group V;

                  (xvi)    the book value of any REO Property;

                  (xvii)   the amount of any Prepayment Interest Shortfalls or
         Relief Act Shortfalls for such Payment Date;


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<PAGE>


                  (xviii)  the aggregate Stated Principal Balance of Mortgage
         Loans purchased pursuant to Section 3.18 of the Servicing Agreement for
         the related Payment Date and cumulatively since the Closing Date;

                  (xix)    the amounts withdrawn from the related Group I, Group
         II, Group II, Group IV, Group V, Group VI and Group VII Pre-Funding
         Account and used to make payments to Noteholders on that Payment Date,
         the amount remaining on deposit following such Payment Date, and the
         amount withdrawn from the related Group I, Group II, Group III, Group
         IV, Group V, Group VI and Group VII Pre-Funding Account used to buy
         certain Group I, Group II, Group III, Group IV, Group V, Group VI and
         Group VII Subsequent Mortgage Loans prior to such Payment Date;

                  (xx)     the Floating Allocation Percentage of Loan Group VII;

                  (xxi)    the Investor Interest Collections of Loan Group VII
         for such Payment Date;

                  (xxii)   the HELOC Master Servicing Fee and RMBS Master
         Servicing Fee for such Payment Date;

                  (xxiii)  if a Stepdown Date has occurred on the related Loan
         Group;

                  (xxiv)   the Charged-Off Amount for the related Payment Date
         and the cumulative Charged-Off Amount since the Closing Date;

                  (xxv)    the Investor Charge-Off Amount for such Payment Date;

                  (xxvi)   the percentage of cumulative losses under a Servicer
         Termination Event;

                  (xxvii)  the Group VII Excess Spread Percentage for such
         Payment Date;

                  (xxviii) the Group VII Excess Spread Percentage on a rolling
         three-month average basis;

                  (xxix)   the number and aggregate Stated Principal Balances of
         HELOC Mortgage Loans (a) as to which the Monthly Payment are 100 days
         or more delinquent, (b) in foreclosure or (c) that have become REO
         Property;

                  (xxx)    the aggregated Stated Principal Balance of the three
         largest HELOC Mortgage Loans as of such Payment Date;

                  (xxxi)   the Overcollateralization Target Amount for the
         related Loan Group as of the preceding Payment Date;

                  (xxxii)  the Overcollateralization Target Amount for the
         related Loan Group for such Payment Date;


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                  (xxxiii) the Investor Principal Distribution Amount for such
         Payment Date;

                  (xxxiv)  the Invested Amount of Loan Group VII for such
         Payment Date;

                  (xxxv)   the Overcollateralization Reduction Amount for such
         Payment Date;

                  (xxxvi)  the Excess Overcollateralization Amount for such
         Payment Date; and

                  (xxxvii) the amount of Crossable Excess received as of such
         Payment Date.

         Items (iii) and (iv) above shall be presented on the basis of a Note
having a $1,000 denomination. In addition, by January 31 of each calendar year
following any year during which the Notes are outstanding, the Indenture Trustee
shall furnish a report to each Noteholder of record if so requested in writing
at any time during each calendar year as to the aggregate of amounts reported
pursuant to (iii) and (iv) with respect to the Notes for such calendar year.

         The Indenture Trustee may conclusively rely upon the Remittance Report
provided by the related Master Servicer to the Indenture Trustee pursuant to
Section 4.01 of the related Servicing Agreement and on the amount of the Group
II Net Swap Agreement Payment Amount and the Group III Net Swap Agreement
Payment Amount furnished to the Indenture pursuant to the Swap Agreements in its
preparation of its Statement to Noteholders.

         The Indenture Trustee will make the monthly statements provided for in
this Section (and, at its option, any additional files containing the same
information in an alternative format) available each month to Noteholders, other
parties to this Agreement and any other interested parties via the Indenture
Trustee's website. The Indenture Trustee's website shall initially be located at
www.bnyinvestorreporting.com. Parties that are unable to use the website are
entitled to have a paper copy mailed to them via first class mail by calling the
customer service desk and indicating such. With the consent of the Depositor,
the Indenture Trustee may have the right to change the way the monthly
statements are distributed in order to make such distribution more convenient
and/or more accessible to the above parties and the Indenture Trustee shall
provide timely and adequate notification to all above parties regarding any such
changes.

         The Indenture Trustee shall be entitled to rely on but shall not be
responsible for the content or accuracy of any information provided by third
parties for purposes of preparing the monthly statement, and may affix thereto
any disclaimer it deems appropriate in its reasonable discretion (without
suggesting liability on the part of any other party hereto).





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                                  ARTICLE VIII

                      Accounts, Disbursements and Releases

         Section 8.01 Collection of Money. Except as otherwise expressly
provided herein, the Indenture Trustee may demand payment or delivery of, and
shall receive and collect, directly and without intervention or assistance of
any fiscal agent or other intermediary, all money and other property payable to
or receivable by the Indenture Trustee pursuant to this Indenture. The Indenture
Trustee shall apply all such money received by it as provided in this Indenture.
Except as otherwise expressly provided in this Indenture, if any default occurs
in the making of any payment or performance under any agreement or instrument
that is part of the Trust Estate, the Indenture Trustee may take such action as
may be appropriate to enforce such payment or performance, including the
institution and prosecution of appropriate Proceedings. Any such action shall be
without prejudice to any right to claim a Default or Event of Default under this
Indenture and any right to proceed thereafter as provided in Article V.

         Section 8.02 Trust Accounts.

         (a)      On or prior to the Closing Date, the Issuer shall cause the
Indenture Trustee to establish and maintain, in the name of the Indenture
Trustee, for the benefit of the Noteholders, the Insurer and the Derivative
Contract Counterparty, the Payment Account as provided in Section 3.01 hereof.

         (b)      All monies deposited from time to time in the Payment Account
and the Certificate Distribution Account and all deposits therein pursuant to
this Indenture (other than deposits of any gain or income on investments
thereof) are for the benefit of the Noteholders and the Certificateholders. Any
loss on any investment made by the Indenture Trustee with funds in the Payment
Account and the Certificate Distribution Account shall be reimbursed immediately
to the Trust Estate by the Seller. All investments made with monies in the
Payment Account and the Certificate Distribution Account including all income or
other gain from such investments shall be for the benefit of and the risk of the
Seller, except that the Indenture Trustee shall have the benefit of three
calendar days next preceding each Payment Date of income or other gain from such
investments. On each Payment Date, the Indenture Trustee shall remit all other
income or other gain from amounts in the Payment Account to the Seller.

         (c)      On each Payment Date, (A) the Indenture Trustee shall be
entitled to withdraw from the Payment Account the following amounts: (i) to pay
to the Indenture Trustee the Indenture Trustee Fee with respect to such Payment
Date, (ii) from funds other than the amounts received in respect of the HELOC
Mortgage Loans to pay the Derivative Contract Counterparty the applicable Net
Swap Fee, in each case excluding any Additional Derivative Contract Counterparty
Payment and (iii) all other amounts reimbursable by the Issuer or from the
Payment Account to the Indenture Trustee pursuant to any provision of any Basic
Document, and (B) the Indenture Trustee shall distribute all remaining amounts
on deposit in the Payment Account to the Noteholders in respect of the Notes and
to such other persons in the order of priority set forth in Section 3.05, 3.06
and 3.07 hereof (except as otherwise provided in Section 5.04(b) hereof). In
addition, the Indenture Trustee shall pay from its own funds, without any right
of reimbursement therefor from the Issuer


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<PAGE>


or the Payment Account, all Owner Trustee Fees and the fees payable to the
Custodian pursuant to the Custodial Agreement.

         (d)      The Indenture Trustee shall invest any funds in the Payment
Account, but only in Eligible Investments, as directed by the Seller in writing,
maturing no later than the next Payment Date and such Eligible Investments shall
not be sold or disposed of prior to their maturity.

         Section 8.03 Officer's Certificate. The Indenture Trustee shall receive
at least seven Business Days' notice when requested by the Issuer to take any
action pursuant to Section 8.05(a) hereof, accompanied by copies of any
instruments to be executed, and the Indenture Trustee shall also require, as a
condition to such action, an Officer's Certificate, in form and substance
satisfactory to the Indenture Trustee, stating the legal effect of any such
action, outlining the steps required to complete the same, and concluding that
all conditions precedent to the taking of such action have been complied with.

         Section 8.04 Termination Upon Distribution to Noteholders. This
Indenture and the respective obligations and responsibilities of the Issuer and
the Indenture Trustee created hereby shall terminate upon the distribution to
Noteholders, the Insurer, the Certificate Paying Agent on behalf of the
Certificateholders and the Indenture Trustee of all amounts required to be
distributed pursuant to Article III; provided, however, that in no event shall
the trust created hereby continue beyond 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, living on the date
hereof.

         Section 8.05 Release of Trust Estate.

         (a)      Subject to the payment of its fees and expenses, the Indenture
Trustee may, and when required by the provisions of this Indenture shall,
execute instruments to release property from the lien of this Indenture, or
convey the Indenture Trustee's interest in the same, in a manner and under
circumstances that are not inconsistent with the provisions of this Indenture,
including for the purposes of any repurchase by the Master Servicer of a
Mortgage Loan pursuant to Section 3.18 of the related Servicing Agreement. No
party relying upon an instrument executed by the Indenture Trustee as provided
in Article VIII hereunder shall be bound to ascertain the Indenture Trustee's
authority, inquire into the satisfaction of any conditions precedent, or see to
the application of any monies.

         (b)      The Indenture Trustee shall, at such time as (i) there are no
Notes Outstanding and (ii) all sums then due and unpaid to the Indenture Trustee
pursuant to this Indenture have been paid and (iii) all sums due to the Insurer
have been paid, release any remaining portion of the Trust Estate that secured
the Notes from the lien of this Indenture.

         (c)      The Indenture Trustee shall release property from the lien of
this Indenture pursuant to this Section 8.05 only upon receipt of a request from
the Issuer accompanied by an Officers' Certificate and an Opinion of Counsel
stating that all applicable requirements have been satisfied, and a letter from
the Insurer stating that the Insurer has no objection to such request from the
Issuer, except as otherwise provided in clause (a).


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         Section 8.06 Surrender of Notes Upon Final Payment. By acceptance of
any Note, the Holder thereof agrees to surrender such Note to the Indenture
Trustee promptly, prior to such Noteholder's receipt of the final payment
thereon.

         Section 8.07 Optional Redemption of the Notes.

         (a)      The Majority Certificateholder shall have the option to
purchase the assets of the Trust related to Loan Group I, Loan Group II, Loan
Group III, Loan Group IV, Loan Group V and Loan Group VI and thereby redeem the
Class I-A, Class II-A, Class III-A, Class IV-A, Class V-A, Class VI-A, Class M,
Class VI-M and Class VI-B Notes on or after the Payment Date on which the Stated
Principal Balance of the related Mortgage Loans, and properties acquired in
respect thereof has been reduced to less than 10% of the sum of the Group I,
Group II, Group III, Group IV, Group V and Group VI Cut-off Date Balance. The
Majority Certificateholder shall have the option to purchase the assets of the
Trust related to Loan Group I, Loan Group II, Loan Group III, Loan Group IV,
Loan Group V, Loan Group VI and Loan Group VII and thereby redeem the Notes on
or after the Payment Date on which the Stated Principal Balance of the Mortgage
Loans and HELOC Mortgage Loans, and properties acquired in respect thereof has
been reduced to less than 10% of the sum of the Group I, Group II, Group III,
Group IV, Group V, Group VI and Group VII Cut-off Date Balance. The Majority
Certificateholder shall have the option to purchase the assets of the Trust
related to Loan Group I, Loan Group II, Loan Group III, Loan Group IV and Loan
Group V and thereby redeem the Class I-A, Class II-A, Class III-A, Class IV-A,
Class V-A and Class M Notes on or after the Payment Date on which the Stated
Principal Balance of the related Mortgage Loans, and properties acquired in
respect thereof has been reduced to less than 10% of the sum of the Group I,
Group II, Group III, Group IV and Group V Cut-off Date Balance. The Majority
Certificateholder shall have the option to purchase the assets of the Trust
related to Loan Group VI and thereby redeem the Class VI-A, Class VI-M and Class
VI-B Notes on or after the Payment Date on which the Stated Principal Balance of
the related Mortgage Loans, and properties acquired in respect thereof has been
reduced to less than 10% of the Group VI Cut-off Date Balance.

         (b)      The Majority Certificateholder shall have the option to
purchase the HELOC Mortgage Loans and thereby redeem the Class VII-A Notes on
any Payment Date on or after the Payment Date on which the Note Principal
Balance of the Class VII-A Notes declines to 10% or less of the Note Principal
Balance of the Class VII-A Notes on the Closing Date. If the Majority
Certificateholder fails to exercise this right, the Insurer may purchase the
HELOC Mortgage Loans 60 days after the Payment Date on which the Note Principal
Balance of the Class VII-A Notes declines to 10% or less of the Note Principal
Balance of the Class VII-A Notes on the Closing Date.

         (c)      The aggregate redemption price (the "Redemption Price") for
the Notes will be equal to 100% of the aggregate outstanding Note Principal
Balance thereof and accrued and unpaid interest thereon (including any related
Unpaid Interest Shortfall, Net WAC Shortfall Carry-Forward Amount and Basis Risk
Shortfall Carry-Forward Amount) at the Note Interest Rate through the date on
which the Notes are redeemed in full together with all amounts due and owing to
the Indenture Trustee under this Indenture (which amounts shall be specified in
writing upon request of the Issuer by the Indenture Trustee) and the related
Master Servicer.


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<PAGE>


         (d)      In order to exercise the foregoing option, the Majority
Certificateholder shall provide written notice of its exercise of such option to
the Indenture Trustee, the Issuer, the Owner Trustee and the applicable Master
Servicer at least 15 days prior to its exercise. Following receipt of the
notice, the Indenture Trustee shall provide written notice to the Noteholders of
the final payment on the Notes. In addition, the Majority Certificateholder
shall, not less than one Business Day prior to the proposed Payment Date on
which such redemption is to be made, deposit the Redemption Price specified in
(a) above with the Indenture Trustee, who shall deposit the Redemption Price
into the Payment Account and shall, on the Payment Date after receipt of the
funds, apply such funds to make final payments of principal and interest on the
Notes in accordance with Sections 3.05, 3.06 or 3.07, as applicable, hereof and
payment to the Indenture Trustee and the Master Servicer as set forth in (a)
above, and this Indenture shall be discharged subject to the provisions of
Section 4.10 hereof. If for any reason the amount deposited by the Majority
Certificateholder is not sufficient to make such redemption or such redemption
cannot be completed for any reason, (a) the amount so deposited by the Majority
Certificateholder with the Indenture Trustee shall be immediately returned to
the Majority Certificateholder in full and shall not be used for any other
purpose or be deemed to be part of the Trust Estate and (b) the Note Principal
Balance of the Notes shall continue to bear interest at the related Note
Interest Rate.










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                                   ARTICLE IX

                             Supplemental Indentures

         Section 9.01 Supplemental Indentures Without Consent of Noteholders.

         (a)      Without the consent of the Holders of any Notes but with prior
written consent of the Insurer and prior notice to the Rating Agencies and the
Insurer, the Issuer and the Indenture Trustee, when authorized by an Issuer
Request, at any time and from time to time, may enter into one or more
indentures supplemental hereto (which shall conform to the provisions of the TIA
as in force at the date of the execution thereof), in form satisfactory to the
Indenture Trustee, for any of the following purposes:

                  (i)      to correct or amplify the description of any property
         at any time subject to the lien of this Indenture, or better to assure,
         convey and confirm unto the Indenture Trustee any property subject or
         required to be subjected to the lien of this Indenture, or to subject
         to the lien of this Indenture additional property;

                  (ii)     to evidence the succession, in compliance with the
         applicable provisions hereof, of another person to the Issuer, and the
         assumption by any such successor of the covenants of the Issuer herein
         and in the Notes contained;

                  (iii)    to add to the covenants of the Issuer, for the
         benefit of the Holders of the Notes or the Insurer, or to surrender any
         right or power herein conferred upon the Issuer;

                  (iv)     to convey, transfer, assign, mortgage or pledge any
         property to or with the Indenture Trustee;

                  (v)      to cure any ambiguity, to correct or supplement any
         provision herein or in any supplemental indenture that may be
         inconsistent with any other provision herein or in any supplemental
         indenture;

                  (vi)     to make any other provisions with respect to matters
         or questions arising under this Indenture or in any supplemental
         indenture; provided, that such action shall not materially and
         adversely affect the interests of the of the Insurer Holders of the
         Notes;

                  (vii)    to evidence and provide for the acceptance of the
         appointment hereunder by a successor trustee with respect to the Notes
         and to add to or change any of the provisions of this Indenture as
         shall be necessary to facilitate the administration of the trusts
         hereunder by more than one trustee, pursuant to the requirements of
         Article VI hereof; or

                  (viii)   to modify, eliminate or add to the provisions of this
         Indenture to such extent as shall be necessary to effect the
         qualification of this Indenture under the TIA or under any similar
         federal statute hereafter enacted and to add to this Indenture such
         other provisions as may be expressly required by the TIA;


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<PAGE>


provided, however, that no such indenture supplements shall be entered into
unless the Indenture Trustee shall have received an Opinion of Counsel as to the
enforceability of any such indenture supplement and to the effect that (i) such
indenture supplement is permitted hereunder and (ii) entering into such
indenture supplement will not result in a "substantial modification" of the
Notes under Treasury Regulation Section 1.1001-3 or adversely affect the status
of the Notes as indebtedness for federal income tax purposes.

         The Indenture Trustee is hereby authorized to join in the execution of
any such supplemental indenture and to make any further appropriate agreements
and stipulations that may be therein contained.

         (b)      The Issuer and the Indenture Trustee, when authorized by an
Issuer Request, may, also without the consent of any of the Holders of the Notes
but with the prior written consent of the Insurer and prior notice to the Rating
Agencies and the Insurer, enter into an indenture or indentures supplemental
hereto for the purpose of adding any provisions to, or changing in any manner or
eliminating any of the provisions of, this Indenture or of modifying in any
manner the rights of the Holders of the Notes under this Indenture; provided,
however, that such action as evidenced by an Opinion of Counsel, (i) is
permitted by this Indenture, (ii) shall not adversely affect in any material
respect the interests of any Noteholder and (iii) if 100% of the Certificates
are not owned by AHM SPV III, LLC, cause the Issuer to be subject to an entity
level tax for federal income tax purposes.

         Section 9.02 Supplemental Indentures With Consent of Noteholders. The
Issuer and the Indenture Trustee, when authorized by an Issuer Request, also
may, with prior notice to the Rating Agencies and, with the prior written
consent of the Insurer and with the consent of the Holders of not less than a
majority of the Note Principal Balance of each Class of Notes affected thereby,
by Act (as defined in Section 10.03 hereof) of such Holders, or the Insurer
pursuant to Section 4.12 hereof, delivered to the Issuer and the Indenture
Trustee, enter into an indenture or indentures supplemental hereto for the
purpose of adding any provisions to, or changing in any manner or eliminating
any of the provisions of, this Indenture or of modifying in any manner the
rights of the Holders of the Notes under this Indenture; provided, however, that
no such supplemental indenture shall, without the consent of the Holder of each
Note affected thereby:

                  (i)      change the date of payment of any installment of
         principal of or interest on any Note, or reduce the principal amount
         thereof or the interest rate thereon, change the provisions of this
         Indenture relating to the application of collections on, or the
         proceeds of the sale of, the Trust Estate and to payment of principal
         of or interest on the Notes, or change any place of payment where, or
         the coin or currency in which, any Note or the interest thereon is
         payable, or impair the right to institute suit for the enforcement of
         the provisions of this Indenture requiring the application of funds
         available therefor, as provided in Article V, to the payment of any
         such amount due on the Notes on or after the respective due dates
         thereof;

                  (ii)     reduce the percentage of the Note Principal Balances
         of the Notes, or any Class of Notes, the consent of the Holders of
         which is required for any such supplemental indenture, or the consent
         of the Holders of which is required for any waiver of


                                       99
<PAGE>


         compliance with certain provisions of this Indenture or certain
         defaults hereunder and their consequences provided for in this
         Indenture;

                  (iii)    modify or alter the provisions of the proviso to the
         definition of the term "Outstanding" or modify or alter the exception
         in the definition of the term "Holder";

                  (iv)     reduce the percentage of the Note Principal Balances
         of the Notes, or any Class of Notes, required to direct the Indenture
         Trustee to direct the Issuer to sell or liquidate the Trust Estate
         pursuant to Section 5.04 hereof;

                  (v)      modify any provision of this Section 9.02 except to
         increase any percentage specified herein or to provide that certain
         additional provisions of this Indenture or the Basic Documents cannot
         be modified or waived without the consent of the Holder of each Note
         affected thereby;

                  (vi)     modify any of the provisions of this Indenture in
         such manner as to affect the calculation of the amount of any payment
         of interest or principal due on any Note on any Payment Date (including
         the calculation of any of the individual components of such
         calculation); or

                  (vii)    permit the creation of any lien ranking prior to or
         on a parity with the lien of this Indenture with respect to any part of
         the Trust Estate or, except as otherwise permitted or contemplated
         herein, terminate the lien of this Indenture on any property at any
         time subject hereto or deprive the Holder of any Note of the security
         provided by the lien of this Indenture;

and provided, further, that such action shall not, as evidenced by an Opinion of
Counsel, cause the Issuer (if 100% of the Certificates are not owned by AHM SPV
III, LLC) to be subject to an entity level tax for federal income tax purposes.

         Any such action shall not adversely affect in any material respect the
interest of any Holder (other than a Holder who shall consent to such
supplemental indenture) as evidenced by an Opinion of Counsel (provided by the
Person requesting such supplemental indenture) delivered to the Indenture
Trustee.

         It shall not be necessary for any Act of Noteholders under this Section
9.02 to approve the particular form of any proposed supplemental indenture, but
it shall be sufficient if such Act shall approve the substance thereof.

         Promptly after the execution by the Issuer and the Indenture Trustee of
any supplemental indenture pursuant to this Section 9.02, the Indenture Trustee
shall mail to the Holders of the Notes to which such amendment or supplemental
indenture relates a notice setting forth in general terms the substance of such
supplemental indenture. Any failure of the Indenture Trustee to mail such
notice, or any defect therein, shall not, however, in any way impair or affect
the validity of any such supplemental indenture.


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<PAGE>


         Section 9.03 Execution of Supplemental Indentures. In executing, or
permitting the additional trusts created by, any supplemental indenture
permitted by this Article IX or the modification thereby of the trusts created
by this Indenture, the Indenture Trustee shall be entitled to receive, and
subject to Sections 6.01 and 6.02 hereof, shall be fully protected in relying
upon, an Opinion of Counsel stating that the execution of such supplemental
indenture is authorized or permitted by this Indenture and that all conditions
precedent thereto have been complied with. The Indenture Trustee may, but shall
not be obligated to, enter into any such supplemental indenture that affects the
Indenture Trustee's own rights, duties, liabilities or immunities under this
Indenture or otherwise.

         Section 9.04 Effect of Supplemental Indenture. Upon the execution of
any supplemental indenture pursuant to the provisions hereof, this Indenture
shall be and shall be deemed to be modified and amended in accordance therewith
with respect to the Notes affected thereby, and the respective rights,
limitations of rights, obligations, duties, liabilities and immunities under
this Indenture of the Indenture Trustee, the Issuer and the Holders of the Notes
shall thereafter be determined, exercised and enforced hereunder subject in all
respects to such modifications and amendments, and all the terms and conditions
of any such supplemental indenture shall be and be deemed to be part of the
terms and conditions of this Indenture and the Notes for any and all purposes.

         Section 9.05 Conformity with Trust Indenture Act. Every amendment of
this Indenture and every supplemental indenture executed pursuant to this
Article IX shall conform to the requirements of the Trust Indenture Act as then
in effect so long as this Indenture shall then be qualified under the Trust
Indenture Act.

         Section 9.06 Reference in Notes to Supplemental Indentures. Notes
authenticated and delivered after the execution of any supplemental indenture
pursuant to this Article IX may, and if required by the Indenture Trustee shall,
bear a notation in form approved by the Indenture Trustee as to any matter
provided for in such supplemental indenture. If the Issuer or the Indenture
Trustee shall so determine, new Notes so modified as to conform, in the opinion
of the Indenture Trustee and the Issuer, to any such supplemental indenture may
be prepared and executed by the Issuer and authenticated and delivered by the
Indenture Trustee in exchange for Outstanding Notes.





                                      101
<PAGE>


                                    ARTICLE X

                                  Miscellaneous

         Section 10.01 Compliance Certificates and Opinions, etc. (a) Upon any
application or request by the Issuer to the Indenture Trustee to take any action
under any provision of this Indenture and the Insurer, the Issuer shall furnish
to the Indenture Trustee (i) an Officer's Certificate stating that all
conditions precedent, if any, provided for in this Indenture relating to the
proposed action have been complied with and (ii) an Opinion of Counsel stating
that in the opinion of such counsel all such conditions precedent, if any, have
been complied with, except that, in the case of any such application or request
as to which the furnishing of such documents is specifically required by any
provision of this Indenture, no additional certificate or opinion need be
furnished.

         Every certificate or opinion with respect to compliance with a
condition or covenant provided for in this Indenture shall include:

         (1)      a statement that each signatory of such certificate or opinion
has read or has caused to be read such covenant or condition and the definitions
herein relating thereto;

         (2)      a brief statement as to the nature and scope of the
examination or investigation upon which the statements or opinions contained in
such certificate or opinion are based;

         (3)      a statement that, in the opinion of each such signatory, such
signatory has made such examination or investigation as is necessary to enable
such signatory to express an informed opinion as to whether or not such covenant
or condition has been complied with;

         (4)      a statement as to whether, in the opinion of each such
signatory, such condition or covenant has been complied with; and

         (5)      if the signatory of such certificate or opinion is required to
be Independent, the statement required by the definition of the term
"Independent".

         (a)      Prior to the deposit of any Collateral or other property or
securities with the Indenture Trustee that is to be made the basis for the
release of any property or securities subject to the lien of this Indenture, the
Issuer shall, in addition to any obligation imposed in Section 10.01 (a) or
elsewhere in this Indenture, furnish to the Indenture Trustee an Officer's
Certificate certifying or stating the opinion of each person signing such
certificate as to the fair value (within 90 days prior to such deposit) to the
Issuer of the Collateral or other property or securities to be so deposited and
a report from a nationally recognized accounting firm verifying such value.

         (b)      Whenever the Issuer is required to furnish to the Indenture
Trustee an Officer's Certificate certifying or stating the opinion of any signer
thereof as to the matters described in clause (i) above, the Issuer shall also
deliver to the Indenture Trustee an Independent Certificate from a nationally
recognized accounting firm as to the same matters, if the fair value of the
securities to be so deposited and of all other such securities made the basis of
any such withdrawal or release since the commencement of the then current fiscal
year of the Issuer, as set forth in the


                                      102
<PAGE>


certificates delivered pursuant to clause (i) above and this clause (ii), is 10%
or more of the Note Principal Balances of the Notes, but such a certificate need
not be furnished with respect to any securities so deposited, if the fair value
thereof as set forth in the related Officer's Certificate is less than $25,000
or less than one percent of the then outstanding Note Principal Balances of the
Notes.

         (c)      Whenever any property or securities are to be released from
the lien of this Indenture, the Issuer shall also furnish to the Indenture
Trustee an Officer's Certificate certifying or stating the opinion of each
person signing such certificate as to the fair value (within 90 days prior to
such release) of the property or securities proposed to be released and stating
that in the opinion of such person the proposed release will not impair the
security under this Indenture in contravention of the provisions hereof.

         (d)      Whenever the Issuer is required to furnish to the Indenture
Trustee an Officer's Certificate certifying or stating the opinion of any signer
thereof as to the matters described in clause (iii) above, the Issuer shall also
furnish to the Indenture Trustee an Independent Certificate as to the same
matters if the fair value of the property or securities and of all other
property or securities released from the lien of this Indenture since the
commencement of the then-current calendar year, as set forth in the certificates
required by clause (iii) above and this clause (iv), equals 10% or more of the
Note Principal Balances of the Notes, but such certificate need not be furnished
in the case of any release of property or securities if the fair value thereof
as set forth in the related Officer's Certificate is less than $25,000 or less
than one percent of the then outstanding Note Principal Balances of the Notes.

         Section 10.02 Form of Documents Delivered to Indenture Trustee. In any
case where several matters are required to be certified by, or covered by an
opinion of, any specified Person, it is not necessary that all such matters be
certified by, or covered by the opinion of, only one such Person, or that they
be so certified or covered by only one document, but one such Person may certify
or give an opinion with respect to some matters and one or more other such
Persons as to other matters, and any such Person may certify or give an opinion
as to such matters in one or several documents.

         Any certificate or opinion of an Authorized Officer of the Issuer may
be based, insofar as it relates to legal matters, upon a certificate or opinion
of, or representations by, counsel, unless such officer knows, or in the
exercise of reasonable care should know, that the certificate or opinion or
representations with respect to the matters upon which his certificate or
opinion is based are erroneous. Any such certificate of an Authorized Officer or
Opinion of Counsel may be based, insofar as it relates to factual matters, upon
a certificate or opinion of, or representations by, an officer or officers of
the Seller or the Issuer, stating that the information with respect to such
factual matters is in the possession of the Seller or the Issuer, unless such
counsel knows, or in the exercise of reasonable care should know, that the
certificate or opinion or representations with respect to such matters are
erroneous.

         Where any Person is required to make, give or execute two or more
applications, requests, consents, certificates, statements, opinions or other
instruments under this Indenture, they may, but need not, be consolidated and
form one instrument.


                                      103
<PAGE>


         Whenever in this Indenture, in connection with any application or
certificate or report to the Indenture Trustee, it is provided that the Issuer
shall deliver any document as a condition of the granting of such application,
or as evidence of the Issuer's compliance with any term hereof, it is intended
that the truth and accuracy, at the time of the granting of such application or
at the effective date of such certificate or report (as the case may be), of the
facts and opinions stated in such document shall in such case be conditions
precedent to the right of the Issuer to have such application granted or to the
sufficiency of such certificate or report. The foregoing shall not, however, be
construed to affect the Indenture Trustee's right to rely upon the truth and
accuracy of any statement or opinion contained in any such document as provided
in Article VI.

         Section 10.03 Acts of Noteholders.

         (a)      Any request, demand, authorization, direction, notice,
consent, waiver or other action provided by this Indenture to be given or taken
by Noteholders may be embodied in and evidenced by one or more instruments of
substantially similar tenor signed by such Noteholders in person or by agents
duly appointed in writing; and except as herein otherwise expressly provided,
such action shall become effective when such instrument or instruments are
delivered to the Indenture Trustee, and, where it is hereby expressly required,
to the Issuer. Such instrument or instruments (and the action embodied therein
and evidenced thereby) are herein sometimes referred to as the "Act" of the
Noteholders signing such instrument or instruments. Proof of execution of any
such instrument or of a writing appointing any such agent shall be sufficient
for any purpose of this Indenture and (subject to Section 6.01 hereof)
conclusive in favor of the Indenture Trustee and the Issuer, if made in the
manner provided in this Section 10.03 hereof.

         (b)      The fact and date of the execution by any person of any such
instrument or writing may be proved in any manner that the Indenture Trustee
deems sufficient.

         (c)      The ownership of Notes shall be proved by the Note Registrar.

         (d)      Any request, demand, authorization, direction, notice,
consent, waiver or other action by the Holder of any Notes shall bind the Holder
of every Note issued upon the registration thereof or in exchange therefor or in
lieu thereof, in respect of anything done, omitted or suffered to be done by the
Indenture Trustee or the Issuer in reliance thereon, whether or not notation of
such action is made upon such Note.

         Section 10.04 Notices etc., to Indenture Trustee, Issuer, Insurer and
Rating Agencies. Any request, demand, authorization, direction, notice, consent,
waiver or Act of Noteholders or other documents provided or permitted by this
Indenture shall be in writing and if such request, demand, authorization,
direction, notice, consent, waiver or act of Noteholders is to be made upon,
given or furnished to or filed with:

         (a)      the Indenture Trustee by any Noteholder or by the Issuer shall
be sufficient for every purpose hereunder if made, given, furnished or filed in
writing to or with the Indenture Trustee at the Corporate Trust Office. All
notices to the Indenture Trustee shall be deemed effective only upon actual
receipt. The Indenture Trustee shall promptly transmit any material notice
received by it from the Noteholders to the Issuer and the Insurer; or


                                      104
<PAGE>


         (b)      the Issuer by the Indenture Trustee or by any Noteholder shall
be sufficient for every purpose hereunder if made, given, furnished or filed in
writing and mailed first-class, postage prepaid to the Issuer addressed to:
American Home Mortgage Investment Trust 2004-4, in care of Wilmington Trust
Company, Rodney Square North, 1100 North Market Street, Wilmington, Delaware
19990-0001, Attention: Corporate Trust Administration, or at any other address
previously furnished in writing to the Indenture Trustee by the Issuer. The
Issuer shall promptly transmit any notice received by it from the Noteholders to
the Indenture Trustee and the Insurer; or

         (c)      the Insurer by the Issuer, the Indenture Trustee or by any
Noteholders shall be sufficient for every purpose hereunder if in writing and
mailed first-class, postage prepaid, or personally delivered or telecopied to:
MBIA Insurance Corporation, Insured Portfolio Management - Structured Finance
(IPM-SF) (American Home Mortgage Investment Trust 2004-4) Facsmile: (914)
765-3810, Tel: (914) 273-4545. The Insurer shall promptly transmit any notice
received by it from the Issuer, the Indenture Trustee or the Noteholders to the
Issuer or Indenture Trustee as the case may be; or

         Notices required to be given to the Rating Agencies by the Issuer, the
Indenture Trustee or the Owner Trustee shall be in writing, mailed first-class
postage pre-paid, (i) to Standard & Poor's, at the following address: Standard &
Poor's, 55 Water Street, 41st Floor, New York, New York 10041, Attention of
Asset Backed Surveillance Department; and (ii) to Moody's, at the following
address: Moody's Investors Service, Inc., 99 Church Street, New York, New York
10007; or as to each of the foregoing, at such other address as shall be
designated by written notice to the other parties.

         Section 10.05 Notices to Noteholders; Waiver. Where this Indenture
provides for notice to Noteholders of any event, such notice shall be
sufficiently given (unless otherwise herein expressly provided) if made, given,
furnished or filed in writing and mailed, first-class, postage prepaid to each
Noteholder affected by such event, at such Person's address as it appears on the
Note Register, not later than the latest date, and not earlier than the earliest
date, prescribed for the giving of such notice. In any case where notice to
Noteholders is given by mail, neither the failure to mail such notice nor any
defect in any notice so mailed to any particular Noteholder shall affect the
sufficiency of such notice with respect to other Noteholders, and any notice
that is mailed in the manner herein provided shall conclusively be presumed to
have been duly given regardless of whether such notice is in fact actually
received.

         Where this Indenture provides for notice in any manner, such notice may
be waived in writing by any Person entitled to receive such notice, either
before or after the event, and such waiver shall be the equivalent of such
notice. Waivers of notice by Noteholders shall be filed with the Indenture
Trustee but such filing shall not be a condition precedent to the validity of
any action taken in reliance upon such a waiver.

         In case, by reason of the suspension of regular mail service as a
result of a strike, work stoppage or similar activity, it shall be impractical
to mail notice of any event to Noteholders when such notice is required to be
given pursuant to any provision of this Indenture, then any


                                      105
<PAGE>


manner of giving such notice as shall be satisfactory to the Indenture Trustee
shall be deemed to be a sufficient giving of such notice.

         Where this Indenture provides for notice to the Rating Agencies,
failure to give such notice shall not affect any other rights or obligations
created hereunder, and shall not under any circumstance constitute an Event of
Default.

         Section 10.06 Conflict with Trust Indenture Act. If any provision
hereof limits, qualifies or conflicts with another provision hereof that is
required to be included in this Indenture by any of the provisions of the Trust
Indenture Act, such required provision shall control.

         The provisions of TIA ss.ss. 310 through 317 that impose duties on any
Person (including the provisions automatically deemed included herein unless
expressly excluded by this Indenture) are a part of and govern this Indenture,
whether or not physically contained herein.

         Section 10.07 Effect of Headings. The Article and Section headings
herein are for convenience only and shall not affect the construction hereof.

         Section 10.08 Successors and Assigns. All covenants and agreements in
this Indenture and the Notes by the Issuer shall bind its successors and
assigns, whether so expressed or not. All agreements of the Indenture Trustee in
this Indenture shall bind its successors, co-trustees and agents.

         Section 10.09 Separability. In case any provision in this Indenture or
in the Notes shall be invalid, illegal or unenforceable, the validity, legality,
and enforceability of the remaining provisions shall not in any way be affected
or impaired thereby.

         Section 10.10 Benefits of Indenture. The Insurer and its successors and
assigns shall be a third-party beneficiary to the provisions of this Indenture.
To the extent that this Indenture confers upon or gives or grants to the Insurer
any right, remedy or claim under or by reason of this Indenture, the Insurer may
enforce any such right, remedy or claim conferred, given or granted hereunder.
Nothing in this Indenture or in the, express or implied, shall give to any
Person, other than the parties hereto and their successors hereunder, and the
Noteholders and the Insurer, any benefit or any legal or equitable right, remedy
or claim under this Indenture.





                                      106
<PAGE>


         Section 10.11 Legal Holidays. In any case where the date on which any
payment is due shall not be a Business Day, then (notwithstanding any other
provision of the Notes or this Indenture) payment need not be made on such date,
but may be made on the next succeeding Business Day with the same force and
effect as if made on the date on which nominally due, and no interest shall
accrue for the period from and after any such nominal date.

         Section 10.12 GOVERNING LAW. THIS INDENTURE SHALL BE CONSTRUED IN
ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK, WITHOUT REFERENCE TO ITS
CONFLICT OF LAW PROVISIONS, AND THE OBLIGATIONS, RIGHTS AND REMEDIES OF THE
PARTIES HEREUNDER SHALL BE DETERMINED IN ACCORDANCE WITH SUCH LAWS.

         The parties to this Indenture each hereby irrevocably submits to the
non exclusive jurisdiction of any New York State or federal court sitting in the
Borough of Manhattan in The City of New York in any action or proceeding arising
out of or relating to the Notes, this Indenture or the transactions contemplated
hereby, and all such parties hereby irrevocably agree that all claims in respect
of such action or proceeding may be heard and determined in such New York State
or federal court and hereby irrevocably waive, to the fullest extent that they
may legally do so, the defense of an inconvenient forum to the maintenance of
such action or proceeding. EACH OF THE PARTIES HERETO HEREBY IRREVOCABLY WAIVES,
TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, ANY AND ALL RIGHT TO TRIAL BY
JURY IN ANY ACTION OR PROCEEDING ARISING OUT OF OR RELATING TO THIS INDENTURE,
THE NOTES OR THE TRANSACTIONS CONTEMPLATED HEREBY.

         Section 10.13 Counterparts. This Indenture may be executed in any
number of counterparts, each of which when so executed shall be deemed to be an
original, but all such counterparts shall together constitute but one and the
same instrument.

         Section 10.14 Recording of Indenture. If this Indenture is subject to
recording in any appropriate public recording offices, such recording is to be
effected by the Issuer and at its expense accompanied by an Opinion of Counsel
at its expense (which may be counsel to the Indenture Trustee or any other
counsel reasonably acceptable to the Indenture Trustee) to the effect that such
recording is necessary either for the protection of the Noteholders or any other
Person secured hereunder or for the enforcement of any right or remedy granted
to the Indenture Trustee under this Indenture.

         Section 10.15 Issuer Obligation. No recourse may be taken, directly or
indirectly, with respect to the obligations of the Issuer, the Owner Trustee or
the Indenture Trustee on the Notes or under this Indenture or any certificate or
other writing delivered in connection herewith or therewith, against (i) the
Indenture Trustee or the Owner Trustee in its individual capacity, (ii) any
owner of a beneficial interest in the Issuer or (iii) any partner, owner,
beneficiary, agent, officer, director, employee or agent of the Indenture
Trustee or the Owner Trustee in its individual capacity, any holder of a
beneficial interest in the Issuer, the Owner Trustee or the Indenture Trustee or
of any successor or assign of the Indenture Trustee or the Owner Trustee in its
individual capacity, except as any such Person may have expressly agreed (it
being understood


                                      107
<PAGE>


that the Indenture Trustee and the Owner Trustee have no such obligations in
their individual capacity) and except that any such partner, owner or
beneficiary shall be fully liable, to the extent provided by applicable law, for
any unpaid consideration for stock, unpaid capital contribution or failure to
pay any installment or call owing to such entity. For all purposes of this
Indenture, in the performance of any duties or obligations of the Issuer
hereunder, the Owner Trustee shall be subject to, and entitled to the benefits
of, the terms and provisions of Article VI, VII and VIII of the Trust Agreement.

         Section 10.16 No Petition. The Indenture Trustee, by entering into this
Indenture, and each Noteholder, by accepting a Note, hereby covenant and agree
that they will not at any time prior to one year from the date of termination
hereof, institute against the Depositor or the Issuer, or join in any
institution against the Depositor or the Issuer of, any bankruptcy,
reorganization, arrangement, insolvency or liquidation proceedings, or other
proceedings under any United States federal or state bankruptcy or similar law
in connection with any obligations relating to the Notes, this Indenture or any
of the Basic Documents.

         Section 10.17 Inspection. The Issuer agrees that, at its expense, on
reasonable prior notice, it shall permit any representative of the Indenture
Trustee and the Insurer, during the Issuer's normal business hours, to examine
all the books of account, records, reports and other papers of the Issuer, to
make copies and extracts therefrom, to cause such books to be audited by
Independent certified public accountants, and to discuss the Issuer's affairs,
finances and accounts with the Issuer's officers, employees, and Independent
certified public accountants, all at such reasonable times and as often as may
be reasonably requested. The Indenture Trustee and the Insurer shall cause its
representatives to hold in confidence all such information except to the extent
disclosure may be required by law (and all reasonable applications for
confidential treatment are unavailing) and except to the extent that the
Indenture Trustee or the Insurer may reasonably determine that such disclosure
is consistent with its obligations hereunder.





                                      108
<PAGE>


         IN WITNESS WHEREOF, the Issuer and the Indenture Trustee have caused
their names to be signed hereto by their respective officers thereunto duly
authorized, all as of the day and year first above written.


                                             AMERICAN HOME MORTGAGE INVESTMENT
                                             TRUST 2004-4, as Issuer
                                             Wilmington Trust Company, not in
                                             its individual capacity but
                                             solely as Owner Trustee


                                             By:________________________________
                                             Name:
                                             Title:


                                             THE BANK OF NEW YORK,
                                             as Indenture Trustee


                                             By:________________________________
                                             Name:
                                             Title:





                                      109
<PAGE>


STATE OF   _____________   )
                           ) ss.:
COUNTY OF  _____________   )

         On this _____ day of December, 2004, before me personally appeared
_____________________ to me known, who being by me duly sworn, did depose and
say, that he is the ___________________ of the Indenture Trustee, one of the
corporations described in and which executed the above instrument; and that he
signed his name thereto by like order.


                                                    Notary Public


                                                    NOTARY PUBLIC



[NOTARIAL SEAL]










                                      110
<PAGE>


STATE OF DELAWARE          )
                           ) ss.:
COUNTY OF NEW CASTLE       )

         On this ____ day of December, 2004, before me personally appeared
____________________ to me known, who being by me duly sworn, did depose and
say, that she is a(n) ________________ of the Owner Trustee, one of the entities
described in and which executed the above instrument; and that she signed her
name thereto by like order.


                                                    Notary Public


                                                    NOTARY PUBLIC



[NOTARIAL SEAL]










                                      111
<PAGE>


                                   EXHIBIT A-1

                              CLASS [__-A-__] NOTES

UNLESS THIS NOTE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY
TRUST COMPANY, A NEW YORK CORPORATION ("DTC"), TO THE INDENTURE TRUSTEE OR ITS
AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE, OR PAYMENT, AND ANY NOTE 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.

THE HOLDER OF THIS NOTE OR BENEFICIAL OWNER OF ANY INTEREST HEREIN WILL BE
DEEMED TO REPRESENT TO ONE OF THE REPRESENTATIONS CONTAINED IN SECTION 4.15 OF
THE INDENTURE.

THIS NOTE IS A NON-RECOURSE OBLIGATION OF THE ISSUER, AND IS LIMITED IN RIGHT OF
PAYMENT TO AMOUNTS AVAILABLE FROM THE TRUST ESTATE AS PROVIDED IN THE INDENTURE
REFERRED TO BELOW. THE ISSUER IS NOT OTHERWISE PERSONALLY LIABLE FOR PAYMENTS ON
THIS NOTE.

PRINCIPAL OF THIS NOTE IS PAYABLE OVER TIME AS SET FORTH HEREIN. ACCORDINGLY,
THE OUTSTANDING PRINCIPAL OF THIS NOTE AT ANY TIME MAY BE LESS THAN THE AMOUNT
SHOWN ON THE FACE HEREOF.


<PAGE>


                 AMERICAN HOME MORTGAGE INVESTMENT TRUST 2004-4
                      MORTGAGE-BACKED NOTES, SERIES 2004-4
                                 CLASS [__-A-__]


AGGREGATE NOTE PRINCIPAL                         NOTE INTEREST
BALANCE: $[________________]                     RATE: [Adjustable Rate][__%]
INITIAL NOTE PRINCIPAL                           NOTE NO.  1
BALANCE OF THIS NOTE: $[_____________]
PERCENTAGE INTEREST: 100%                        CUSIP NO: [_______________]

         American Home Mortgage Investment Trust 2004-4 (the "Issuer"), a
Delaware statutory trust, for value received, hereby promises to pay to
[____________]. or registered assigns, the principal sum of
$[____________________] in monthly installments on the twenty-fifth day of each
month or, if such day is not a Business Day, the next succeeding Business Day
(each a "Payment Date"), commencing in January 2005 and ending on or before the
Payment Date occurring in [February 2045] (the "Final Scheduled Payment Date")
and to pay interest on the Note Principal Balance of this Note (this "Note")
outstanding from time to time as provided below.

         This Note is one of a duly authorized issue of the Issuer's
Mortgage-Backed Notes, Series 2004-4 (the "Notes"), issued under an Indenture
dated as of December [21], 2004 (the "Indenture"), between the Issuer and The
Bank of New York as indenture trustee (the "Indenture Trustee") to which
Indenture and all indentures supplemental thereto reference is hereby made for a
statement of the respective rights thereunder of the Issuer, the Indenture
Trustee, and the Holders of the Notes and the terms upon which the Notes are to
be authenticated and delivered. All terms used in this Note which are defined in
the Indenture shall have the meanings assigned to them in the Indenture.

         Payments of principal and interest on this Note will be made on each
Payment Date to the Noteholder of record as of the related Record Date. The
"Note Principal Balance" of a Note as of any date of determination is equal to
the initial Note Principal Balance thereof, reduced by the aggregate of all
amounts previously paid with respect to such Note on account of principal.

         [MBIA Insurance Corporation (the "Insurer"), in consideration of the
payment of the premium and subject to the terms of the note guaranty insurance
policy (the "Insurance Policy") issued thereby, has unconditionally and
irrevocably guaranteed the payment of an amount equal to the Insured Payment
with respect to the Class VII-A Notes with respect to each Payment Date.]

         The principal of, and interest on, this Note are due and payable as
described in the Indenture, in such coin or currency of the United States of
America as at the time of payment is legal tender for payment of public and
private debts. All payments made by the Issuer with respect to this Note shall
be equal to this Note's pro rata share of the aggregate payments on all

<PAGE>

Class [__-A-__] Notes as described above, and shall be applied as between
interest and principal as provided in the Indenture.

         All principal and interest accrued on the Notes, if not previously
paid, will become finally due and payable at the Final Scheduled Payment Date.

         [For Class I, Class II, Class III, Class IV and Class IV Notes] [The
Majority Certificateholder shall have the option to purchase the assets of the
Trust related to Loan Group I, Loan Group II, Loan Group III, Loan Group IV,
Loan Group V and Loan Group VI and thereby redeem the Class I-A, Class II-A,
Class III-A, Class IV-A, Class V-A, Class VI-A, Class M, Class VI-M and Class
VI-B Notes on or after the Payment Date on which the Stated Principal Balance of
the related Mortgage Loans, and properties acquired in respect thereof has been
reduced to less than 10% of the sum of the Group I, Group II, Group III, Group
IV, Group V and Group VI Cut-off Date Balance. The Majority Certificateholder
shall have the option to purchase the assets of the Trust related to Loan Group
I, Loan Group II, Loan Group III, Loan Group IV, Loan Group V, Loan Group VI and
Loan Group VII and thereby redeem the Notes on or after the Payment Date on
which the Stated Principal Balance of the Mortgage Loans and HELOC Mortgage
Loans, and properties acquired in respect thereof has been reduced to less than
10% of the sum of the Group I, Group II, Group III, Group IV, Group V, Group VI
and Group VII Cut-off Date Balance. The Majority Certificateholder shall have
the option to purchase the assets of the Trust related to Loan Group I, Loan
Group II, Loan Group III, Loan Group IV and Loan Group V and thereby redeem the
Class I-A, Class II-A, Class III-A, Class IV-A, Class V-A and Class M Notes on
or after the Payment Date on which the Stated Principal Balance of the related
Mortgage Loans, and properties acquired in respect thereof has been reduced to
less than 10% of the sum of the Group I, Group II, Group III, Group IV and Group
V Cut-off Date Balance.]

         [For Class VI Notes] [The Majority Certificateholder shall have the
option to purchase the assets of the Trust related to Loan Group I, Loan Group
II, Loan Group III, Loan Group IV, Loan Group V and Loan Group VI and thereby
redeem the Class I-A, Class II-A, Class III-A, Class IV-A, Class V-A, Class
VI-A, Class M, Class VI-M and Class VI-B Notes on or after the Payment Date on
which the Stated Principal Balance of the related Mortgage Loans, and properties
acquired in respect thereof has been reduced to less than 10% of the sum of the
Group I, Group II, Group III, Group IV, Group V and Group VI Cut-off Date
Balance. The Majority Certificateholder shall have the option to purchase the
assets of the Trust related to Loan Group I, Loan Group II, Loan Group III, Loan
Group IV, Loan Group V, Loan Group VI and Loan Group VII and thereby redeem the
Notes on or after the Payment Date on which the Stated Principal Balance of the
Mortgage Loans and HELOC Mortgage Loans, and properties acquired in respect
thereof has been reduced to less than 10% of the sum of the Group I, Group II,
Group III, Group IV, Group V, Group VI and Group VII Cut-off Date Balance. The
Majority Certificateholder shall have the option to purchase the assets of the
Trust related to Loan Group VI and thereby redeem the Class VI-A, Class VI-M and
Class VI-B Notes on or after the Payment Date on which the Stated Principal
Balance of the related Mortgage Loans, and properties acquired in respect
thereof has been reduced to less than 10% of the Group VI Cut-off Date Balance.]

         [For Class VII Notes] [The Majority Certificateholder shall have the
option to purchase the assets of the Trust related to Loan Group I, Loan Group
II, Loan Group III, Loan Group IV, Loan Group V, Loan Group VI and Loan Group
VII and thereby redeem the Notes on or after the

<PAGE>


Payment Date on which the Stated Principal Balance of the Mortgage Loans and
HELOC Mortgage Loans, and properties acquired in respect thereof has been
reduced to less than 10% of the sum of the Group I, Group II, Group III, Group
IV, Group V, Group VI and Group VII Cut-off Date Balance. The Majority
Certificateholder shall have the option to purchase the HELOC Mortgage Loans on
any Payment Date on or after the Payment Date on which the Note Principal
Balance of the Class VII-A Notes declines to 10% or less of the Note Principal
Balance of the Class VII-A Notes on the Closing Date. If the Majority
Certificateholder fails to exercise this right, the Insurer may purchase the
HELOC Mortgage Loans 60 days after the Payment Date on which the Note Principal
Balance of the Class VII-A Notes declines to 10% or less of the Note Principal
Balance of the Class VII-A Notes on the Closing Date.]

         The Issuer shall not be liable upon the indebtedness evidenced by the
Notes except to the extent of amounts available from the Trust Estate which
constitutes security for the payment of the Notes. The assets included in the
Trust Estate will be the sole source of payments on the Class [__-A-__] Notes,
and each Holder hereof, by its acceptance of this Note, agrees that (i) such
Note will be limited in right of payment to amounts available from the Trust
Estate as provided in the Indenture and (ii) such Holder shall have no recourse
to the Issuer, the Owner Trustee, the Indenture Trustee, the Depositor, the
Seller, the Master Servicers or any of their respective affiliates, or to the
assets of any of the foregoing entities, except the assets of the Issuer pledged
to secure the Class [__-A-__] Notes pursuant to the Indenture and the rights
conveyed to the Issuer under the Indenture.

         Any payment of principal or interest payable on this Note which is
punctually paid on the applicable Payment Date shall be paid to the Person in
whose name such Note is registered at the close of business on the Record Date
for such Payment Date by check mailed to such person's address as it appears in
the Note Register on such Record Date, except for the final installment of
principal and interest payable with respect to such Note, which shall be payable
as provided below. Notwithstanding the foregoing, upon written request with
appropriate instructions by the Holder of this Note delivered to the Indenture
Trustee at least five Business Days prior to the Record Date, any payment of
principal or interest, other than the final installment of principal or
interest, shall be made by wire transfer to an account in the United States
designated by such Holder. All reductions in the principal amount of a Note
effected by payments of principal made on any Payment Date shall be binding upon
all Holders of this Note and of any Note issued upon the registration of
transfer thereof or in exchange therefor or in lieu thereof, whether or not such
payment is noted on such Note. The final payment of this Note shall be payable
upon presentation and surrender thereof on or after the Payment Date thereof at
the Corporate Trust Office or the office or agency of the Issuer maintained by
it for such purpose pursuant to Section 3.02 of the Indenture.

         Subject to the foregoing provisions, each Note delivered under the
Indenture, upon registration of transfer of or in exchange for or in lieu of any
other Note, shall carry the right to unpaid principal and interest that were
carried by such other Note.

         If an Event of Default as defined in the Indenture shall occur and be
continuing with respect to the Notes, the Notes may become or be declared due
and payable in the manner and with the effect provided in the Indenture. If any
such acceleration of maturity occurs prior to the payment of the entire unpaid
Note Principal Balance of the Notes, the amount payable to the

<PAGE>


Holder of this Note will be equal to the sum of the unpaid Note Principal
Balance of this Note, together with accrued and unpaid interest thereon as
described in the Indenture. The Indenture provides that, notwithstanding the
acceleration of the maturity of the Notes, under certain circumstances specified
therein, all amounts collected as proceeds of the Trust Estate securing the
Notes or otherwise shall continue to be applied to payments of principal of and
interest on the Notes as if they had not been declared due and payable.

         The failure to pay any Unpaid Interest Shortfall at any time when funds
are not available to make such payment as provided in the Indenture shall not
constitute an Event of Default under the Indenture.

         The Holder of this Note or Beneficial Owner of any interest herein is
deemed to represent that either (1) it is not acquiring the Note with Plan
Assets or (2) (A) the acquisition, holding and transfer of a Note will not give
rise to a nonexempt prohibited transaction under Section 406 of ERISA or Section
4975 of the Code and (B) the Notes are rated investment grade or better and such
person believes that the Notes are properly treated as indebtedness without
substantial equity features for purposes of the DOL Regulations, and agrees to
so treat the Notes. Alternatively, regardless of the rating of the Notes, such
person may provide the Indenture Trustee and the Owner Trustee with an opinion
of counsel, which opinion of counsel will not be at the expense of the Issuer,
the Seller, any Underwriter, the Owner Trustee, the Indenture Trustee, the
Master Servicers or any successor servicer, which opines that the acquisition,
holding and transfer of such Note or interest therein is permissible under
applicable law, will not constitute or result in a non-exempt prohibited
transaction under ERISA or Section 4975 of the Code and will not subject the
Issuer, the Seller, the Depositor, any Underwriter, the Owner Trustee, the
Indenture Trustee, the Master Servicers or any successor servicer to any
obligation in addition to those undertaken in the Indenture.

         As provided in the Indenture and subject to certain limitations therein
set forth, the transfer of this Note may be registered on the Note Register of
the Issuer. Upon surrender for registration of transfer of, or presentation of a
written instrument of transfer for, this Note at the office or agency designated
by the Issuer pursuant to the Indenture, accompanied by proper instruments of
assignment in form satisfactory to the Indenture Trustee, one or more new Notes
of any authorized denominations and of a like aggregate then outstanding Note
Principal Balance, will be issued to the designated transferee or transferees.

         Prior to the due presentment for registration of transfer of this Note,
the Issuer, the Indenture Trustee and any agent of the Issuer or the Indenture
Trustee may treat the Person in whose name this Note is registered as the owner
of such Note (i) on the applicable Record Date for the purpose of making
payments and interest of such Note, and (ii) on any other date for all other
purposes whatsoever, as the owner hereof, whether or not this Note be overdue,
and neither the Issuer, the Indenture Trustee nor any such agent of the Issuer
or the Indenture Trustee shall be affected by notice to the contrary.

         The Indenture permits, with certain exceptions as therein provided, the
amendment thereof and the modification of the rights and obligations of the
Issuer and the rights of the Holders of the Notes under the Indenture at any
time by the Issuer and the Holders of a majority of each Class of Notes affected
thereby. The Indenture also contains provisions permitting the

<PAGE>


Holders of Notes representing not less than a majority of the aggregate Note
Principal Balance of the Notes, to waive any past Event of Default and its
consequences except an Event of Default (a) with respect to payment of principal
of or interest on any of the Notes, or (b) in respect of a covenant or provision
of the Indenture which cannot be modified or amended without the consent of the
Holder of each Note. Any such waiver by the Holder, at the time of the giving
thereof, of this Note (or any one or more predecessor Notes) shall bind the
Holder of every Note issued upon the registration of transfer hereof or in
exchange hereof or in lieu hereof, whether or not notation of such consent or
waiver is made upon such Note. The Indenture also permits the Issuer and the
Indenture Trustee, following prior notice to the Rating Agencies, to amend or
waive certain terms and conditions set forth in the Indenture without the
consent of the Holders of the Notes issued thereunder.

         Initially, the Notes will be registered in the name of Cede & Co. as
nominee of DTC, acting in its capacity as the Depository for the Notes. The
Notes will be delivered by the clearing agency in denominations as provided in
the Indenture and subject to certain limitations therein set forth. The Notes
are exchangeable for a like aggregate then outstanding Note Principal Balance of
Notes of different authorized denominations, as requested by the Holder
surrendering same.

         Unless the Certificate of Authentication hereon has been executed by
the Indenture Trustee by manual signature, this Note shall not be entitled to
any benefit under the Indenture, or be valid or obligatory for any purpose.

         Anything herein to the contrary notwithstanding, except as expressly
provided in the Basic Documents, neither the Owner Trustee in its individual
capacity, nor any of its respective partners, beneficiaries, agents, officers,
directors, employees, or successors or assigns, shall be personally liable for,
nor shall recourse be had to any of them for, the payment of principal of or
interest on, or performance of, or omission to perform, any of the covenants,
obligations or indemnifications contained in this Note, it being expressly
understood that said covenants, obligations and indemnifications have been made
solely by the Trust to the extent of the assets of the Trust. The holder of this
Note by the acceptance hereof agrees that, except as expressly provided in the
Basic Documents, the Holder shall have no claim against any of the foregoing for
any deficiency, loss or claim therefrom; provided, however, that nothing
contained herein shall be taken to prevent recourse to, and enforcement against,
the assets of the Trust Estate for any and all liabilities, obligations and
undertakings contained in this Note.

         AS PROVIDED IN THE INDENTURE, THIS NOTE AND THE INDENTURE CREATING THIS
NOTE SHALL BE CONSTRUED IN ACCORDANCE WITH, AND GOVERNED BY, THE LAWS OF THE
STATE OF NEW YORK APPLICABLE TO AGREEMENTS MADE AND TO BE PERFORMED THEREIN.

<PAGE>


         IN WITNESS WHEREOF, the Issuer has caused this instrument to be duly
executed by Wilmington Trust Company, not in its individual capacity but solely
as Owner Trustee.

Dated: December 21, 2004


                                             AMERICAN HOME MORTGAGE
                                             INVESTMENT TRUST 2004-4

                                             BY:  WILMINGTON TRUST COMPANY, not
                                                  in its individual capacity but
                                                  solely in itscapacity as Owner
                                                  Trustee


                                             By:  ______________________________
                                                  Authorized Signatory


                INDENTURE TRUSTEE'S CERTIFICATE OF AUTHENTICATION

This is one of the Class [__-A-__] Notes referred to in the within-mentioned
Indenture.

THE BANK OF NEW YORK, as Indenture Trustee


By:  ________________________
     Authorized Signatory

<PAGE>


                                  ABBREVIATIONS
                                  -------------

         The following abbreviations, when used in the inscription on the face
of the Note, shall be construed as though they were written out in full
according to applicable laws or regulations:

          TEN COM                       --      as tenants in common
          TEN ENT                       --      as tenants by the entireties
          JT TEN                        --      as  joint  tenants  with  right
                                                of  survivorship  and  not as
                                                tenants in common
      UNIF GIFT MIN ACT                 --      __________ Custodian
                                                ______________________________
                                                (Cust)                 (Minor)

                                                under Uniform Gifts to Minor Act
                                                _____________________
                                                                     (State)

     Additional abbreviations may also be used though not in the above list.

<PAGE>


                                   ASSIGNMENT
                                   ----------

  FOR VALUE RECEIVED, the undersigned hereby sells, assigns and transfers unto

     PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER OF ASSIGNEE:




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

________________________________________________________________________________
the within Note and all rights thereunder, and hereby irrevocably constitutes
and appoints ________________________ attorney to transfer said Note on the
books kept for registration thereof, with full power of substitution in the
premises.

Dated:_____________________                  ___________________________________

Signature Guaranteed by_______________________________

         NOTICE: The signature(s) to this assignment must correspond with the
name as it appears upon the face of the within Note in every particular, without
alteration or enlargement or any change whatsoever. Signature(s) must be
guaranteed by a commercial bank or by a member firm of the New York Stock
Exchange or another national securities exchange. Notarized or witnessed
signatures are not acceptable.

<PAGE>


                                   EXHIBIT A-2
                              CLASS [__-M-__] NOTES

THIS NOTE IS SUBORDINATED IN RIGHT OF PAYMENT TO THE CLASS A, [CLASS M-1][ AND
CLASS M-2 NOTES] AS DESCRIBED IN THE INDENTURE.

UNLESS THIS NOTE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY
TRUST COMPANY, A NEW YORK CORPORATION ("DTC"), TO THE INDENTURE TRUSTEE OR ITS
AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE, OR PAYMENT, AND ANY NOTE 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.

THE HOLDER OF THIS NOTE OR BENEFICIAL OWNER OF ANY INTEREST HEREIN WILL BE
DEEMED TO REPRESENT TO ONE OF THE REPRESENTATIONS CONTAINED IN SECTION 4.15 OF
THE INDENTURE.

THIS NOTE IS A NON-RECOURSE OBLIGATION OF THE ISSUER, AND IS LIMITED IN RIGHT OF
PAYMENT TO AMOUNTS AVAILABLE FROM THE TRUST ESTATE AS PROVIDED IN THE INDENTURE
REFERRED TO BELOW. THE ISSUER IS NOT OTHERWISE PERSONALLY LIABLE FOR PAYMENTS ON
THIS NOTE.

PRINCIPAL OF THIS NOTE IS PAYABLE OVER TIME AS SET FORTH HEREIN. ACCORDINGLY,
THE OUTSTANDING PRINCIPAL OF THIS NOTE AT ANY TIME MAY BE LESS THAN THE AMOUNT
SHOWN ON THE FACE HEREOF.

<PAGE>


                 AMERICAN HOME MORTGAGE INVESTMENT TRUST 2004-4
                      MORTGAGE-BACKED NOTES, SERIES 2004-4
                                 CLASS [__-M-__]

AGGREGATE NOTE PRINCIPAL                                NOTE INTEREST
BALANCE: $[______________]                              RATE: Adjustable Rate
INITIAL NOTE PRINCIPAL                                  NOTE NO.  1
BALANCE OF THIS NOTE: $[_____________]
PERCENTAGE INTEREST: 100%                               CUSIP NO:

         American Home Mortgage Investment Trust 2004-4 (the "Issuer"), a
Delaware statutory trust, for value received, hereby promises to pay to
[____________] or registered assigns, the principal sum of $[______________] in
monthly installments on the twenty-fifth day of each month or, if such day is
not a Business Day, the next succeeding Business Day (each a "Payment Date"),
commencing in January 2005 and ending on or before the Payment Date occurring in
[February 2045] (the "Final Scheduled Payment Date") and to pay interest on the
Note Principal Balance of this Note (this "Note") outstanding from time to time
as provided below.

         This Note is one of a duly authorized issue of the Issuer's
Mortgage-Backed Notes, Series 2004-4 (the "Notes"), issued under an Indenture
dated as of December [21], 2004 (the "Indenture"), between the Issuer and The
Bank of New York as indenture trustee (the "Indenture Trustee"), to which
Indenture and all indentures supplemental thereto reference is hereby made for a
statement of the respective rights thereunder of the Issuer, the Indenture
Trustee and the Holders of the Notes and the terms upon which the Notes are to
be authenticated and delivered. All terms used in this Note which are defined in
the Indenture shall have the meanings assigned to them in the Indenture.

         Payments of principal and interest on this Note will be made on each
Payment Date to the Noteholder of record as of the related Record Date. The
"Note Principal Balance" of a Note as of any date of determination is equal to
the initial Note Principal Balance thereof, reduced by the aggregate of all
amounts previously paid with respect to such Note on account of principal and
the aggregate amount of cumulative Realized Losses allocated to such Note on all
prior Payment Dates, and increased by any Subsequent Recoveries allocated to
such Note.

         The principal of, and interest on, this Note are due and payable as
described in the Indenture, in such coin or currency of the United States of
America as at the time of payment is legal tender for payment of public and
private debts. All payments made by the Issuer with respect to this Note shall
be equal to this Note's pro rata share of the aggregate payments on all Class
[__-M-__] Notes as described above, and shall be applied as between interest and
principal as provided in the Indenture.

         All principal and interest accrued on the Notes, if not previously
paid, will become finally due and payable at the Final Scheduled Payment Date.

<PAGE>


         [For Class M Notes] [The Majority Certificateholder shall have the
option to purchase the assets of the Trust related to Loan Group I, Loan Group
II, Loan Group III, Loan Group IV, Loan Group V and Loan Group VI and thereby
redeem the Class I-A, Class II-A, Class III-A, Class IV-A, Class V-A, Class
VI-A, Class M, Class VI-M and Class VI-B Notes on or after the Payment Date on
which the Stated Principal Balance of the related Mortgage Loans, and properties
acquired in respect thereof has been reduced to less than 10% of the sum of the
Group I, Group II, Group III, Group IV, Group V and Group VI Cut-off Date
Balance. The Majority Certificateholder shall have the option to purchase the
assets of the Trust related to Loan Group I, Loan Group II, Loan Group III, Loan
Group IV, Loan Group V, Loan Group VI and Loan Group VII and thereby redeem the
Notes on or after the Payment Date on which the Stated Principal Balance of the
Mortgage Loans and HELOC Mortgage Loans, and properties acquired in respect
thereof has been reduced to less than 10% of the sum of the Group I, Group II,
Group III, Group IV, Group V, Group VI and Group VII Cut-off Date Balance. The
Majority Certificateholder shall have the option to purchase the assets of the
Trust related to Loan Group I, Loan Group II, Loan Group III, Loan Group IV and
Loan Group V and thereby redeem the Class I-A, Class II-A, Class III-A, Class
IV-A, Class V-A and Class M Notes on or after the Payment Date on which the
Stated Principal Balance of the related Mortgage Loans, and properties acquired
in respect thereof has been reduced to less than 10% of the sum of the Group I,
Group II, Group III, Group IV and Group V Cut-off Date Balance.]

         [For Class VI-M Notes] [The Majority Certificateholder shall have the
option to purchase the assets of the Trust related to Loan Group I, Loan Group
II, Loan Group III, Loan Group IV, Loan Group V and Loan Group VI and thereby
redeem the Class I-A, Class II-A, Class III-A, Class IV-A, Class V-A, Class
VI-A, Class M, Class VI-M and Class VI-B Notes on or after the Payment Date on
which the Stated Principal Balance of the related Mortgage Loans, and properties
acquired in respect thereof has been reduced to less than 10% of the sum of the
Group I, Group II, Group III, Group IV, Group V and Group VI Cut-off Date
Balance. The Majority Certificateholder shall have the option to purchase the
assets of the Trust related to Loan Group I, Loan Group II, Loan Group III, Loan
Group IV, Loan Group V, Loan Group VI and Loan Group VII and thereby redeem the
Notes on or after the Payment Date on which the Stated Principal Balance of the
Mortgage Loans and HELOC Mortgage Loans, and properties acquired in respect
thereof has been reduced to less than 10% of the sum of the Group I, Group II,
Group III, Group IV, Group V, Group VI and Group VII Cut-off Date Balance. The
Majority Certificateholder shall have the option to purchase the assets of the
Trust related to Loan Group VI and thereby redeem the Class VI-A, Class VI-M and
Class VI-B Notes on or after the Payment Date on which the Stated Principal
Balance of the related Mortgage Loans, and properties acquired in respect
thereof has been reduced to less than 10% of the Group VI Cut-off Date Balance.]

         The Issuer shall not be liable upon the indebtedness evidenced by the
Notes except to the extent of amounts available from the Trust Estate which
constitutes security for the payment of the Notes. The assets included in the
Trust Estate will be the sole source of payments on the Class [__-M-__] Notes,
and each Holder hereof, by its acceptance of this Note, agrees that (i) such
Note will be limited in right of payment to amounts available from the Trust
Estate as provided in the Indenture and (ii) such Holder shall have no recourse
to the Issuer, the Owner Trustee, the Indenture Trustee, the Depositor, the
Seller, the Master Servicer or any of their respective affiliates, or to the
assets of any of the foregoing entities, except the assets of the

<PAGE>


Issuer pledged to secure the Class [__-M-__] Notes pursuant to the Indenture and
the rights conveyed to the Issuer under the Indenture.

         Any payment of principal or interest payable on this Note which is
punctually paid on the applicable Payment Date shall be paid to the Person in
whose name such Note is registered at the close of business on the Record Date
for such Payment Date by check mailed to such person's address as it appears in
the Note Register on such Record Date, except for the final installment of
principal and interest payable with respect to such Note, which shall be payable
as provided below. Notwithstanding the foregoing, upon written request with
appropriate instructions by the Holder of this Note delivered to the Indenture
Trustee at least five Business Days prior to the Record Date, any payment of
principal or interest, other than the final installment of principal or
interest, shall be made by wire transfer to an account in the United States
designated by such Holder. All reductions in the principal amount of a Note
effected by payments of principal made on any Payment Date shall be binding upon
all Holders of this Note and of any note issued upon the registration of
transfer thereof or in exchange therefor or in lieu thereof, whether or not such
payment is noted on such Note. The final payment of this Note shall be payable
upon presentation and surrender thereof on or after the Payment Date thereof at
the Corporate Trust Office or the office or agency of the Issuer maintained by
it for such purpose pursuant to Section 3.02 of the Indenture.

         Subject to the foregoing provisions, each Note delivered under the
Indenture, upon registration of transfer of or in exchange for or in lieu of any
other Note, shall carry the right to unpaid principal and interest that were
carried by such other Note.

         If an Event of Default as defined in the Indenture shall occur and be
continuing with respect to the Notes, the Notes may become or be declared due
and payable in the manner and with the effect provided in the Indenture. If any
such acceleration of maturity occurs prior to the payment of the entire unpaid
Note Principal Balance of the Notes, the amount payable to the Holder of this
Note will be equal to the sum of the unpaid Note Principal Balance of this Note,
together with accrued and unpaid interest thereon as described in the Indenture.
The Indenture provides that, notwithstanding the acceleration of the maturity of
the Notes, under certain circumstances specified therein, all amounts collected
as proceeds of the Trust Estate securing the Notes or otherwise shall continue
to be applied to payments of principal of and interest on the Notes as if they
had not been declared due and payable.

         The failure to pay any Unpaid Interest Shortfall at any time when funds
are not available to make such payment as provided in the Indenture shall not
constitute an Event of Default under the Indenture.

         The Holder of this Note or Beneficial Owner of any interest herein is
deemed to represent that either (1) it is not acquiring the Note with Plan
Assets or (2) (A) the acquisition, holding and transfer of a Note will not give
rise to a nonexempt prohibited transaction under Section 406 of ERISA or Section
4975 of the Code and (B) the Notes are rated investment grade or better and such
person believes that the Notes are properly treated as indebtedness without
substantial equity features for purposes of the DOL Regulations, and agrees to
so treat the Notes. Alternatively, regardless of the rating of the Notes, such
person may provide the Indenture Trustee and the Owner Trustee with an opinion
of counsel, which opinion of counsel will not be

<PAGE>


at the expense of the Issuer, the Seller, any Underwriter, the Owner Trustee,
the Indenture Trustee, the Master Servicer or any successor servicer, which
opines that the acquisition, holding and transfer of such Note or interest
therein is permissible under applicable law, will not constitute or result in a
non-exempt prohibited transaction under ERISA or Section 4975 of the Code and
will not subject the Issuer, the Seller, the Depositor, any Underwriter, the
Owner Trustee, the Indenture Trustee, the Master Servicer or any successor
servicer to any obligation in addition to those undertaken in the Indenture.

         As provided in the Indenture and subject to certain limitations therein
set forth, the transfer of this Note may be registered on the Note Register of
the Issuer. Upon surrender for registration of transfer of, or presentation of a
written instrument of transfer for, this Note at the office or agency designated
by the Issuer pursuant to the Indenture, accompanied by proper instruments of
assignment in form satisfactory to the Indenture Trustee, one or more new Notes
of any authorized denominations and of a like aggregate then outstanding Note
Principal Balance, will be issued to the designated transferee or transferees.

         Prior to the due presentment for registration of transfer of this Note,
the Issuer, the Indenture Trustee and any agent of the Issuer or the Indenture
Trustee may treat the Person in whose name this Note is registered as the owner
of such Note (i) on the applicable Record Date for the purpose of making
payments and interest of such Note, and (ii) on any other date for all other
purposes whatsoever, as the owner hereof, whether or not this Note be overdue,
and neither the Issuer, the Indenture Trustee nor any such agent of the Issuer
or the Indenture Trustee shall be affected by notice to the contrary.

         The Indenture permits, with certain exceptions as therein provided, the
amendment thereof and the modification of the rights and obligations of the
Issuer and the rights of the Holders of the Notes under the Indenture at any
time by the Issuer and the Holders of a majority of each Class of Notes affected
thereby. The Indenture also contains provisions permitting the Holders of Notes
representing not less than a majority of the aggregate Note Principal Balance of
the Notes, to waive any past Event of Default and its consequences except an
Event of Default (a) with respect to payment of principal of or interest on any
of the Notes, or (b) in respect of a covenant or provision of the Indenture
which cannot be modified or amended without the consent of the Holder of each
Note. Any such waiver by the Holder, at the time of the giving thereof, of this
Note (or any one or more predecessor Notes) shall bind the Holder of every Note
issued upon the registration of transfer hereof or in exchange hereof or in lieu
hereof, whether or not notation of such consent or waiver is made upon such
Note. The Indenture also permits the Issuer and the Indenture Trustee, following
prior notice to the Rating Agencies, to amend or waive certain terms and
conditions set forth in the Indenture without the consent of the Holders of the
Notes issued thereunder.

         Initially, the Notes will be registered in the name of Cede & Co. as
nominee of DTC, acting in its capacity as the Depository for the Notes. The
Notes will be delivered by the clearing agency in denominations as provided in
the Indenture and subject to certain limitations therein set forth. The Notes
are exchangeable for a like aggregate then outstanding Note Principal Balance of
Notes of different authorized denominations, as requested by the Holder
surrendering same.

<PAGE>


         Unless the Certificate of Authentication hereon has been executed by
the Indenture Trustee by manual signature, this Note shall not be entitled to
any benefit under the Indenture, or be valid or obligatory for any purpose.

         Anything herein to the contrary notwithstanding, except as expressly
provided in the Basic Documents, neither the Owner Trustee in its individual
capacity, nor any of its respective partners, beneficiaries, agents, officers,
directors, employees, or successors or assigns, shall be personally liable for,
nor shall recourse be had to any of them for, the payment of principal of or
interest on, or performance of, or omission to perform, any of the covenants,
obligations or indemnifications contained in this Note, it being expressly
understood that said covenants, obligations and indemnifications have been made
solely by the Trust to the extent of the assets of the Trust. The holder of this
Note by the acceptance hereof agrees that, except as expressly provided in the
Basic Documents, the Holder shall have no claim against any of the foregoing for
any deficiency, loss or claim therefrom; provided, however, that nothing
contained herein shall be taken to prevent recourse to, and enforcement against,
the assets of the Trust Estate for any and all liabilities, obligations and
undertakings contained in this Note.

         AS PROVIDED IN THE INDENTURE, THIS NOTE AND THE INDENTURE CREATING THIS
NOTE SHALL BE CONSTRUED IN ACCORDANCE WITH, AND GOVERNED BY, THE LAWS OF THE
STATE OF NEW YORK APPLICABLE TO AGREEMENTS MADE AND TO BE PERFORMED THEREIN.

<PAGE>


         IN WITNESS WHEREOF, the Issuer has caused this instrument to be duly
executed by Wilmington Trust Company, not in its individual capacity but solely
as Owner Trustee.

Dated: December 21, 2004


                                             AMERICAN HOME MORTGAGE
                                             INVESTMENT TRUST 2004-4

                                             BY:  WILMINGTON TRUST COMPANY, not
                                                  in its individual capacity but
                                                  solely in itscapacity as Owner
                                                  Trustee


                                             By:  ______________________________
                                                  Authorized Signatory


                INDENTURE TRUSTEE'S CERTIFICATE OF AUTHENTICATION

This is one of the Class [__-M-__] Notes referred to in the within-mentioned
Indenture.

THE BANK OF NEW YORK, as Indenture Trustee


By:  ________________________
     Authorized Signatory

<PAGE>


                                  ABBREVIATIONS
                                  -------------

         The following abbreviations, when used in the inscription on the face
of the Note, shall be construed as though they were written out in full
according to applicable laws or regulations:

          TEN COM                       --      as tenants in common
          TEN ENT                       --      as tenants by the entireties
          JT TEN                        --      as  joint  tenants  with  right
                                                of  survivorship  and  not as
                                                tenants in common
      UNIF GIFT MIN ACT                 --      __________ Custodian
                                                ______________________________
                                                (Cust)                 (Minor)

                                                under Uniform Gifts to Minor Act
                                                _____________________
                                                                     (State)

     Additional abbreviations may also be used though not in the above list.

<PAGE>


                                   ASSIGNMENT
                                   ----------

  FOR VALUE RECEIVED, the undersigned hereby sells, assigns and transfers unto

     PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER OF ASSIGNEE:




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

________________________________________________________________________________
the within Note and all rights thereunder, and hereby irrevocably constitutes
and appoints ________________________ attorney to transfer said Note on the
books kept for registration thereof, with full power of substitution in the
premises.

Dated:_____________________                  ___________________________________

Signature Guaranteed by_______________________________

         NOTICE: The signature(s) to this assignment must correspond with the
name as it appears upon the face of the within Note in every particular, without
alteration or enlargement or any change whatsoever. Signature(s) must be
guaranteed by a commercial bank or by a member firm of the New York Stock
Exchange or another national securities exchange. Notarized or witnessed
signatures are not acceptable.

<PAGE>


                                   EXHIBIT A-3
                              CLASS [VI-B-__] NOTES

THIS NOTE IS SUBORDINATED IN RIGHT OF PAYMENT TO THE CLASS VI-A, CLASS VI-M [AND
CLASS VI-B-1 NOTES][AND CLASS VI-B-2 NOTES] AS DESCRIBED IN THE INDENTURE.

UNLESS THIS NOTE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY
TRUST COMPANY, A NEW YORK CORPORATION ("DTC"), TO THE INDENTURE TRUSTEE OR ITS
AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE, OR PAYMENT, AND ANY NOTE 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.

THE HOLDER OF THIS NOTE OR BENEFICIAL OWNER OF ANY INTEREST HEREIN WILL BE
DEEMED TO REPRESENT TO ONE OF THE REPRESENTATIONS CONTAINED IN SECTION 4.15 OF
THE INDENTURE.

THIS NOTE IS A NON-RECOURSE OBLIGATION OF THE ISSUER, AND IS LIMITED IN RIGHT OF
PAYMENT TO AMOUNTS AVAILABLE FROM THE TRUST ESTATE AS PROVIDED IN THE INDENTURE
REFERRED TO BELOW. THE ISSUER IS NOT OTHERWISE PERSONALLY LIABLE FOR PAYMENTS ON
THIS NOTE.

PRINCIPAL OF THIS NOTE IS PAYABLE OVER TIME AS SET FORTH HEREIN. ACCORDINGLY,
THE OUTSTANDING PRINCIPAL OF THIS NOTE AT ANY TIME MAY BE LESS THAN THE AMOUNT
SHOWN ON THE FACE HEREOF.

<PAGE>


                 AMERICAN HOME MORTGAGE INVESTMENT TRUST 2004-4
                      MORTGAGE-BACKED NOTES, SERIES 2004-4
                                 CLASS [VI-B-__]

AGGREGATE NOTE PRINCIPAL                                 NOTE INTEREST
BALANCE: $[______________]                               RATE: Adjustable Rate
INITIAL NOTE PRINCIPAL                                   NOTE NO.  1
BALANCE OF THIS NOTE: $[_____________]
PERCENTAGE INTEREST: 100%                                CUSIP NO:

         American Home Mortgage Investment Trust 2004-4 (the "Issuer"), a
Delaware statutory trust, for value received, hereby promises to pay to
[____________] or registered assigns, the principal sum of $[______________] in
monthly installments on the twenty-fifth day of each month or, if such day is
not a Business Day, the next succeeding Business Day (each a "Payment Date"),
commencing in January 2005 and ending on or before the Payment Date occurring in
[February 2045] (the "Final Scheduled Payment Date") and to pay interest on the
Note Principal Balance of this Note (this "Note") outstanding from time to time
as provided below.

         This Note is one of a duly authorized issue of the Issuer's
Mortgage-Backed Notes, Series 2004-4 (the "Notes"), issued under an Indenture
dated as of December [21], 2004 (the "Indenture"), between the Issuer and The
Bank of New York as indenture trustee (the "Indenture Trustee"), to which
Indenture and all indentures supplemental thereto reference is hereby made for a
statement of the respective rights thereunder of the Issuer, the Indenture
Trustee and the Holders of the Notes and the terms upon which the Notes are to
be authenticated and delivered. All terms used in this Note which are defined in
the Indenture shall have the meanings assigned to them in the Indenture.

         Payments of principal and interest on this Note will be made on each
Payment Date to the Noteholder of record as of the related Record Date. The
"Note Principal Balance" of a Note as of any date of determination is equal to
the initial Note Principal Balance thereof, reduced by the aggregate of all
amounts previously paid with respect to such Note on account of principal and
the aggregate amount of cumulative Realized Losses allocated to such Note on all
prior Payment Dates, and increased by any Subsequent Recoveries allocated to
such Note.

         The principal of, and interest on, this Note are due and payable as
described in the Indenture, in such coin or currency of the United States of
America as at the time of payment is legal tender for payment of public and
private debts. All payments made by the Issuer with respect to this Note shall
be equal to this Note's pro rata share of the aggregate payments on all Class
[__-M-__] Notes as described above, and shall be applied as between interest and
principal as provided in the Indenture.

         All principal and interest accrued on the Notes, if not previously
paid, will become finally due and payable at the Final Scheduled Payment Date.

<PAGE>


           The Majority Certificateholder shall have the option to purchase the
assets of the Trust related to Loan Group I, Loan Group II, Loan Group III, Loan
Group IV, Loan Group V and Loan Group VI and thereby redeem the Class I-A, Class
II-A, Class III-A, Class IV-A, Class V-A, Class VI-A, Class M, Class VI-M and
Class VI-B Notes on or after the Payment Date on which the Stated Principal
Balance of the related Mortgage Loans, and properties acquired in respect
thereof has been reduced to less than 10% of the sum of the Group I, Group II,
Group III, Group IV, Group V and Group VI Cut-off Date Balance. The Majority
Certificateholder shall have the option to purchase the assets of the Trust
related to Loan Group I, Loan Group II, Loan Group III, Loan Group IV, Loan
Group V, Loan Group VI and Loan Group VII and thereby redeem the Notes on or
after the Payment Date on which the Stated Principal Balance of the Mortgage
Loans and HELOC Mortgage Loans, and properties acquired in respect thereof has
been reduced to less than 10% of the sum of the Group I, Group II, Group III,
Group IV, Group V, Group VI and Group VII Cut-off Date Balance. The Majority
Certificateholder shall have the option to purchase the assets of the Trust
related to Loan Group VI and thereby redeem the Class VI-A, Class VI-M and Class
VI-B Notes on or after the Payment Date on which the Stated Principal Balance of
the related Mortgage Loans, and properties acquired in respect thereof has been
reduced to less than 10% of the Group VI Cut-off Date Balance.

         The Issuer shall not be liable upon the indebtedness evidenced by the
Notes except to the extent of amounts available from the Trust Estate which
constitutes security for the payment of the Notes. The assets included in the
Trust Estate will be the sole source of payments on the Class [__-M-__] Notes,
and each Holder hereof, by its acceptance of this Note, agrees that (i) such
Note will be limited in right of payment to amounts available from the Trust
Estate as provided in the Indenture and (ii) such Holder shall have no recourse
to the Issuer, the Owner Trustee, the Indenture Trustee, the Depositor, the
Seller, the Master Servicer or any of their respective affiliates, or to the
assets of any of the foregoing entities, except the assets of the Issuer pledged
to secure the Class [__-M-__] Notes pursuant to the Indenture and the rights
conveyed to the Issuer under the Indenture.

         Any payment of principal or interest payable on this Note which is
punctually paid on the applicable Payment Date shall be paid to the Person in
whose name such Note is registered at the close of business on the Record Date
for such Payment Date by check mailed to such person's address as it appears in
the Note Register on such Record Date, except for the final installment of
principal and interest payable with respect to such Note, which shall be payable
as provided below. Notwithstanding the foregoing, upon written request with
appropriate instructions by the Holder of this Note delivered to the Indenture
Trustee at least five Business Days prior to the Record Date, any payment of
principal or interest, other than the final installment of principal or
interest, shall be made by wire transfer to an account in the United States
designated by such Holder. All reductions in the principal amount of a Note
effected by payments of principal made on any Payment Date shall be binding upon
all Holders of this Note and of any note issued upon the registration of
transfer thereof or in exchange therefor or in lieu thereof, whether or not such
payment is noted on such Note. The final payment of this Note shall be payable
upon presentation and surrender thereof on or after the Payment Date thereof at
the Corporate Trust Office or the office or agency of the Issuer maintained by
it for such purpose pursuant to Section 3.02 of the Indenture.

<PAGE>


         Subject to the foregoing provisions, each Note delivered under the
Indenture, upon registration of transfer of or in exchange for or in lieu of any
other Note, shall carry the right to unpaid principal and interest that were
carried by such other Note.

         If an Event of Default as defined in the Indenture shall occur and be
continuing with respect to the Notes, the Notes may become or be declared due
and payable in the manner and with the effect provided in the Indenture. If any
such acceleration of maturity occurs prior to the payment of the entire unpaid
Note Principal Balance of the Notes, the amount payable to the Holder of this
Note will be equal to the sum of the unpaid Note Principal Balance of this Note,
together with accrued and unpaid interest thereon as described in the Indenture.
The Indenture provides that, notwithstanding the acceleration of the maturity of
the Notes, under certain circumstances specified therein, all amounts collected
as proceeds of the Trust Estate securing the Notes or otherwise shall continue
to be applied to payments of principal of and interest on the Notes as if they
had not been declared due and payable.

         The failure to pay any Unpaid Interest Shortfall at any time when funds
are not available to make such payment as provided in the Indenture shall not
constitute an Event of Default under the Indenture.

         The Holder of this Note or Beneficial Owner of any interest herein is
deemed to represent that either (1) it is not acquiring the Note with Plan
Assets or (2) (A) the acquisition, holding and transfer of a Note will not give
rise to a nonexempt prohibited transaction under Section 406 of ERISA or Section
4975 of the Code and (B) the Notes are rated investment grade or better and such
person believes that the Notes are properly treated as indebtedness without
substantial equity features for purposes of the DOL Regulations, and agrees to
so treat the Notes. Alternatively, regardless of the rating of the Notes, such
person may provide the Indenture Trustee and the Owner Trustee with an opinion
of counsel, which opinion of counsel will not be at the expense of the Issuer,
the Seller, any Underwriter, the Owner Trustee, the Indenture Trustee, the
Master Servicer or any successor servicer, which opines that the acquisition,
holding and transfer of such Note or interest therein is permissible under
applicable law, will not constitute or result in a non-exempt prohibited
transaction under ERISA or Section 4975 of the Code and will not subject the
Issuer, the Seller, the Depositor, any Underwriter, the Owner Trustee, the
Indenture Trustee, the Master Servicer or any successor servicer to any
obligation in addition to those undertaken in the Indenture.

         As provided in the Indenture and subject to certain limitations therein
set forth, the transfer of this Note may be registered on the Note Register of
the Issuer. Upon surrender for registration of transfer of, or presentation of a
written instrument of transfer for, this Note at the office or agency designated
by the Issuer pursuant to the Indenture, accompanied by proper instruments of
assignment in form satisfactory to the Indenture Trustee, one or more new Notes
of any authorized denominations and of a like aggregate then outstanding Note
Principal Balance, will be issued to the designated transferee or transferees.

         Prior to the due presentment for registration of transfer of this Note,
the Issuer, the Indenture Trustee and any agent of the Issuer or the Indenture
Trustee may treat the Person in whose name this Note is registered as the owner
of such Note (i) on the applicable Record Date for the purpose of making
payments and interest of such Note, and (ii) on any other date for all

<PAGE>


other purposes whatsoever, as the owner hereof, whether or not this Note be
overdue, and neither the Issuer, the Indenture Trustee nor any such agent of the
Issuer or the Indenture Trustee shall be affected by notice to the contrary.

         The Indenture permits, with certain exceptions as therein provided, the
amendment thereof and the modification of the rights and obligations of the
Issuer and the rights of the Holders of the Notes under the Indenture at any
time by the Issuer and the Holders of a majority of each Class of Notes affected
thereby. The Indenture also contains provisions permitting the Holders of Notes
representing not less than a majority of the aggregate Note Principal Balance of
the Notes, to waive any past Event of Default and its consequences except an
Event of Default (a) with respect to payment of principal of or interest on any
of the Notes, or (b) in respect of a covenant or provision of the Indenture
which cannot be modified or amended without the consent of the Holder of each
Note. Any such waiver by the Holder, at the time of the giving thereof, of this
Note (or any one or more predecessor Notes) shall bind the Holder of every Note
issued upon the registration of transfer hereof or in exchange hereof or in lieu
hereof, whether or not notation of such consent or waiver is made upon such
Note. The Indenture also permits the Issuer and the Indenture Trustee, following
prior notice to the Rating Agencies, to amend or waive certain terms and
conditions set forth in the Indenture without the consent of the Holders of the
Notes issued thereunder.

         Initially, the Notes will be registered in the name of Cede & Co. as
nominee of DTC, acting in its capacity as the Depository for the Notes. The
Notes will be delivered by the clearing agency in denominations as provided in
the Indenture and subject to certain limitations therein set forth. The Notes
are exchangeable for a like aggregate then outstanding Note Principal Balance of
Notes of different authorized denominations, as requested by the Holder
surrendering same.

         Unless the Certificate of Authentication hereon has been executed by
the Indenture Trustee by manual signature, this Note shall not be entitled to
any benefit under the Indenture, or be valid or obligatory for any purpose.

         Anything herein to the contrary notwithstanding, except as expressly
provided in the Basic Documents, neither the Owner Trustee in its individual
capacity, nor any of its respective partners, beneficiaries, agents, officers,
directors, employees, or successors or assigns, shall be personally liable for,
nor shall recourse be had to any of them for, the payment of principal of or
interest on, or performance of, or omission to perform, any of the covenants,
obligations or indemnifications contained in this Note, it being expressly
understood that said covenants, obligations and indemnifications have been made
solely by the Trust to the extent of the assets of the Trust. The holder of this
Note by the acceptance hereof agrees that, except as expressly provided in the
Basic Documents, the Holder shall have no claim against any of the foregoing for
any deficiency, loss or claim therefrom; provided, however, that nothing
contained herein shall be taken to prevent recourse to, and enforcement against,
the assets of the Trust Estate for any and all liabilities, obligations and
undertakings contained in this Note.

         AS PROVIDED IN THE INDENTURE, THIS NOTE AND THE INDENTURE CREATING THIS
NOTE SHALL BE CONSTRUED IN ACCORDANCE WITH, AND

<PAGE>


GOVERNED BY, THE LAWS OF THE STATE OF NEW YORK APPLICABLE TO AGREEMENTS MADE AND
TO BE PERFORMED THEREIN.

<PAGE>


         IN WITNESS WHEREOF, the Issuer has caused this instrument to be duly
executed by Wilmington Trust Company, not in its individual capacity but solely
as Owner Trustee.

Dated: December [21], 2004

                                             AMERICAN HOME MORTGAGE
                                             INVESTMENT TRUST 2004-4

                                             BY:  WILMINGTON TRUST COMPANY, not
                                                  in its individual capacity but
                                                  solely in itscapacity as Owner
                                                  Trustee


                                             By:  ______________________________
                                                  Authorized Signatory


                INDENTURE TRUSTEE'S CERTIFICATE OF AUTHENTICATION

This is one of the Class [VI-B-__] Notes referred to in the within-mentioned
Indenture.

THE BANK OF NEW YORK , as Indenture Trustee


By:  __________________________
     Authorized Signatory

<PAGE>


                                  ABBREVIATIONS
                                  -------------

         The following abbreviations, when used in the inscription on the face
of the Note, shall be construed as though they were written out in full
according to applicable laws or regulations:

          TEN COM                       --      as tenants in common
          TEN ENT                       --      as tenants by the entireties
          JT TEN                        --      as  joint  tenants  with  right
                                                of  survivorship  and  not as
                                                tenants in common
      UNIF GIFT MIN ACT                 --      __________ Custodian
                                                ______________________________
                                                (Cust)                 (Minor)

                                                under Uniform Gifts to Minor Act
                                                _____________________
                                                                     (State)

     Additional abbreviations may also be used though not in the above list.

<PAGE>


                                   ASSIGNMENT
                                   ----------

  FOR VALUE RECEIVED, the undersigned hereby sells, assigns and transfers unto

     PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER OF ASSIGNEE:




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

________________________________________________________________________________
the within Note and all rights thereunder, and hereby irrevocably constitutes
and appoints ________________________ attorney to transfer said Note on the
books kept for registration thereof, with full power of substitution in the
premises.

Dated:_____________________                  ___________________________________

Signature Guaranteed by_______________________________

         NOTICE: The signature(s) to this assignment must correspond with the
name as it appears upon the face of the within Note in every particular, without
alteration or enlargement or any change whatsoever. Signature(s) must be
guaranteed by a commercial bank or by a member firm of the New York Stock
Exchange or another national securities exchange. Notarized or witnessed
signatures are not acceptable.

<PAGE>


                                   EXHIBIT A-4

                               CLASS [__]-N NOTES

THIS NOTE IS SUBORDINATED IN RIGHT OF PAYMENT TO THE CLASS A AND CLASS M NOTES
AS DESCRIBED IN THE INDENTURE.

UNLESS THIS NOTE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY
TRUST COMPANY, A NEW YORK CORPORATION ("DTC"), TO THE INDENTURE TRUSTEE OR ITS
AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE, OR PAYMENT, AND ANY NOTE 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.

THE HOLDER OF THIS NOTE OR BENEFICIAL OWNER OF ANY INTEREST HEREIN WILL BE
DEEMED TO REPRESENT TO ONE OF THE REPRESENTATIONS CONTAINED IN SECTION 4.15 OF
THE INDENTURE.

THIS NOTE IS A NON-RECOURSE OBLIGATION OF THE ISSUER, AND IS LIMITED IN RIGHT OF
PAYMENT TO AMOUNTS AVAILABLE FROM THE TRUST ESTATE AS PROVIDED IN THE INDENTURE
REFERRED TO BELOW. THE ISSUER IS NOT OTHERWISE PERSONALLY LIABLE FOR PAYMENTS ON
THIS NOTE.

PRINCIPAL OF THIS NOTE IS PAYABLE OVER TIME AS SET FORTH HEREIN. ACCORDINGLY,
THE OUTSTANDING PRINCIPAL OF THIS NOTE AT ANY TIME MAY BE LESS THAN THE AMOUNT
SHOWN ON THE FACE HEREOF.

<PAGE>


                 AMERICAN HOME MORTGAGE INVESTMENT TRUST 2004-4
                      MORTGAGE-BACKED NOTES, SERIES 2004-4
                                     CLASS N

AGGREGATE NOTE PRINCIPAL                             NOTE INTEREST
BALANCE: $[_______________]                          RATE: [5.000]%
INITIAL NOTE PRINCIPAL                               NOTE NO.  1
BALANCE OF THIS NOTE: $[_____________]
PERCENTAGE INTEREST: 100%                            CUSIP NO: [_____________]

         American Home Mortgage Investment Trust 2004-4 (the "Issuer"), a
Delaware statutory trust, for value received, hereby promises to pay to
[________] or registered assigns, the principal sum of $[_______________] in
monthly installments on the twenty-fifth day of each month or, if such day is
not a Business Day, the next succeeding Business Day (each a "Payment Date"),
commencing in January 2005 and ending on or before the Payment Date occurring in
[February 2045] (the "Final Scheduled Payment Date") and to pay interest on the
Note Principal Balance of this Note (this "Note") outstanding from time to time
as provided below.

         This Note is one of a duly authorized issue of the Issuer's
Mortgage-Backed Notes, Series 2004-4 (the "Notes"), issued under an Indenture
dated as of December [21],2004 (the "Indenture"), between the Issuer and The
Bank of New York, as indenture trustee (the "Indenture Trustee"), which term
includes any successor Indenture Trustee under the Indenture), to which
Indenture and all indentures supplemental thereto reference is hereby made for a
statement of the respective rights thereunder of the Issuer, the Indenture
Trustee and the Holders of the Notes and the terms upon which the Notes are to
be authenticated and delivered. All terms used in this Note which are defined in
the Indenture shall have the meanings assigned to them in the Indenture.

         To the extent of remaining related Net Monthly Excess Cashflow,
payments of principal and interest on this Note will be made on each Payment
Date to the Noteholder of record as of the related Record Date. The "Note
Principal Balance" of a Note as of any date of determination is equal to the
initial Note Principal Balance thereof, reduced by the aggregate of all amounts
previously paid with respect to such Note on account of principal.

         The principal of, and interest on, this Note are due and payable as
described in the Indenture, in such coin or currency of the United States of
America as at the time of payment is legal tender for payment of public and
private debts. All payments made by the Issuer with respect to this Note shall
be equal to this Note's pro rata share of the aggregate payments on all Class N
Notes as described above, and shall be applied as between interest and principal
as provided in the Indenture.

         All principal and interest accrued on the Notes, if not previously
paid, will become finally due and payable at the Final Scheduled Payment Date.

<PAGE>


         The Notes are subject to redemption in whole, but not in part, by the
Holder of the Certificates, or, if there is no single Holder, the Majority
Certificateholder, on any Payment Date on or after the Payment Date on which the
aggregate Stated Principal Balance of the Mortgage Loans as of the end of the
prior Due Period is less than or equal to 10% of aggregate Stated Principal
Balance of the Mortgage Loans as of the Cut-off Date.

         The Issuer shall not be liable upon the indebtedness evidenced by the
Notes except to the extent of amounts available from the Trust Estate which
constitutes security for the payment of the Notes. The assets included in the
Trust Estate will be the sole source of payments on the Class N Notes, and each
Holder hereof, by its acceptance of this Note, agrees that (i) such Note will be
limited in right of payment to amounts available from the Trust Estate as
provided in the Indenture and (ii) such Holder shall have no recourse to the
Issuer, the Owner Trustee, the Indenture Trustee, the Depositor, the Seller, the
Master Servicers or any of their respective affiliates, or to the assets of any
of the foregoing entities, except the assets of the Issuer pledged to secure the
Class N Notes pursuant to the Indenture and the rights conveyed to the Issuer
under the Indenture.

         Any payment of principal or interest payable on this Note which is
punctually paid on the applicable Payment Date shall be paid to the Person in
whose name such Note is registered at the close of business on the Record Date
for such Payment Date by check mailed to such person's address as it appears in
the Note Register on such Record Date, except for the final installment of
principal and interest payable with respect to such Note, which shall be payable
as provided below. Notwithstanding the foregoing, upon written request with
appropriate instructions by the Holder of this Note delivered to the Indenture
Trustee at least five Business Days prior to the Record Date, any payment of
principal or interest, other than the final installment of principal or
interest, shall be made by wire transfer to an account in the United States
designated by such Holder. All reductions in the principal amount of a Note
effected by payments of principal made on any Payment Date shall be binding upon
all Holders of this Note and of any note issued upon the registration of
transfer thereof or in exchange therefor or in lieu thereof, whether or not such
payment is noted on such Note. The final payment of this Note shall be payable
upon presentation and surrender thereof on or after the Payment Date thereof at
the Corporate Trust Office or the office or agency of the Issuer maintained by
it for such purpose pursuant to Section 3.02 of the Indenture.

         Subject to the foregoing provisions, each Note delivered under the
Indenture, upon registration of transfer of or in exchange for or in lieu of any
other Note, shall carry the right to unpaid principal and interest that were
carried by such other Note.

         If an Event of Default as defined in the Indenture shall occur and be
continuing with respect to the Notes, the Notes may become or be declared due
and payable in the manner and with the effect provided in the Indenture. If any
such acceleration of maturity occurs prior to the payment of the entire unpaid
Note Principal Balance of the Notes, the amount payable to the Holder of this
Note will be equal to the sum of the unpaid Note Principal Balance of this Note,
together with accrued and unpaid interest thereon as described in the Indenture.
The Indenture provides that, notwithstanding the acceleration of the maturity of
the Notes, under certain circumstances specified therein, all amounts collected
as proceeds of the Trust Estate securing

<PAGE>


the Notes or otherwise shall continue to be applied to payments of principal of
and interest on the Notes as if they had not been declared due and payable.

         The failure to pay any Unpaid Interest Shortfall at any time when funds
are not available to make such payment as provided in the Indenture, and the
failure to pay Accrued Note Interest on the Class N Notes, shall not constitute
an Event of Default under the Indenture.

         The Holder of this Note or Beneficial Owner of any interest herein is
deemed to represent that either (1) it is not acquiring the Note with Plan
Assets or (2) (A) the acquisition, holding and transfer of a Note will not give
rise to a nonexempt prohibited transaction under Section 406 of ERISA or Section
4975 of the Code and (B) the Notes are rated investment grade or better and such
person believes that the Notes are properly treated as indebtedness without
substantial equity features for purposes of the DOL Regulations, and agrees to
so treat the Notes. Alternatively, regardless of the rating of the Notes, such
person may provide the Indenture Trustee and the Owner Trustee with an opinion
of counsel, which opinion of counsel will not be at the expense of the Issuer,
the Seller, any Underwriter, the Owner Trustee, the Indenture Trustee, the
Master Servicers or any successor servicer, which opines that the acquisition,
holding and transfer of such Note or interest therein is permissible under
applicable law, will not constitute or result in a non-exempt prohibited
transaction under ERISA or Section 4975 of the Code and will not subject the
Issuer, the Seller, the Depositor, any Underwriter, the Owner Trustee, the
Indenture Trustee, the Master Servicers or any successor servicer to any
obligation in addition to those undertaken in the Indenture.

         As provided in the Indenture and subject to certain limitations therein
set forth, the transfer of this Note may be registered on the Note Register of
the Issuer. Upon surrender for registration of transfer of, or presentation of a
written instrument of transfer for, this Note at the office or agency designated
by the Issuer pursuant to the Indenture, accompanied by proper instruments of
assignment in form satisfactory to the Indenture Trustee, one or more new Notes
of any authorized denominations and of a like aggregate then outstanding Note
Principal Balance, will be issued to the designated transferee or transferees.

         Prior to the due presentment for registration of transfer of this Note,
the Issuer, the Indenture Trustee and any agent of the Issuer or the Indenture
Trustee may treat the Person in whose name this Note is registered as the owner
of such Note (i) on the applicable Record Date for the purpose of making
payments and interest of such Note, and (ii) on any other date for all other
purposes whatsoever, as the owner hereof, whether or not this Note be overdue,
and neither the Issuer, the Indenture Trustee nor any such agent of the Issuer
or the Indenture Trustee shall be affected by notice to the contrary.

         The Indenture permits, with certain exceptions as therein provided, the
amendment thereof and the modification of the rights and obligations of the
Issuer and the rights of the Holders of the Notes under the Indenture at any
time by the Issuer and the Holders of a majority of each Class of Notes affected
thereby. The Indenture also contains provisions permitting the Holders of Notes
representing not less than a majority of the aggregate Note Principal Balance of
the Notes, to waive any past Event of Default and its consequences except an
Event of Default (a) with respect to payment of principal of or interest on any
of the Notes, or (b) in respect of a covenant or provision of the Indenture
which cannot be modified or amended without the

<PAGE>


consent of the Holder of each Note. Any such waiver by the Holder, at the time
of the giving thereof, of this Note (or any one or more predecessor Notes) shall
bind the Holder of every Note issued upon the registration of transfer hereof or
in exchange hereof or in lieu hereof, whether or not notation of such consent or
waiver is made upon such Note. The Indenture also permits the Issuer and the
Indenture Trustee, following prior notice to the Rating Agencies, to amend or
waive certain terms and conditions set forth in the Indenture without the
consent of the Holders of the Notes issued thereunder.

         Initially, the Notes will be registered in the name of Cede & Co. as
nominee of DTC, acting in its capacity as the Depository for the Notes. The
Notes will be delivered by the clearing agency in denominations as provided in
the Indenture and subject to certain limitations therein set forth. The Notes
are exchangeable for a like aggregate then outstanding Note Principal Balance of
Notes of different authorized denominations, as requested by the Holder
surrendering same.

         Unless the Certificate of Authentication hereon has been executed by
the Indenture Trustee by manual signature, this Note shall not be entitled to
any benefit under the Indenture, or be valid or obligatory for any purpose.

         Anything herein to the contrary notwithstanding, except as expressly
provided in the Basic Documents, neither the Owner Trustee in its individual
capacity, nor any of its respective partners, beneficiaries, agents, officers,
directors, employees, or successors or assigns, shall be personally liable for,
nor shall recourse be had to any of them for, the payment of principal of or
interest on, or performance of, or omission to perform, any of the covenants,
obligations or indemnifications contained in this Note, it being expressly
understood that said covenants, obligations and indemnifications have been made
solely by the Trust to the extent of the assets of the Trust. The holder of this
Note by the acceptance hereof agrees that, except as expressly provided in the
Basic Documents, the Holder shall have no claim against any of the foregoing for
any deficiency, loss or claim therefrom; provided, however, that nothing
contained herein shall be taken to prevent recourse to, and enforcement against,
the assets of the Trust Estate for any and all liabilities, obligations and
undertakings contained in this Note.

         AS PROVIDED IN THE INDENTURE, THIS NOTE AND THE INDENTURE CREATING THIS
NOTE SHALL BE CONSTRUED IN ACCORDANCE WITH, AND GOVERNED BY, THE LAWS OF THE
STATE OF NEW YORK APPLICABLE TO AGREEMENTS MADE AND TO BE PERFORMED THEREIN.

<PAGE>


         IN WITNESS WHEREOF, the Issuer has caused this instrument to be duly
executed by Wilmington Trust Company, not in its individual capacity but solely
as Owner Trustee.

Dated: December [21], 2004

                                             AMERICAN HOME MORTGAGE
                                             INVESTMENT TRUST 2004-4

                                             BY:  WILMINGTON TRUST COMPANY, not
                                                  in its individual capacity but
                                                  solely in itscapacity as Owner
                                                  Trustee


                                             By:  ______________________________
                                                  Authorized Signatory

                INDENTURE TRUSTEE'S CERTIFICATE OF AUTHENTICATION

This is one of the Class N Notes referred to in the within-mentioned Indenture.

THE BANK OF NEW YORK, as Indenture Trustee


By:  __________________________
     Authorized Signatory

<PAGE>


                                  ABBREVIATIONS
                                  -------------

         The following abbreviations, when used in the inscription on the face
of the Note, shall be construed as though they were written out in full
according to applicable laws or regulations:

          TEN COM                       --      as tenants in common
          TEN ENT                       --      as tenants by the entireties
          JT TEN                        --      as  joint  tenants  with  right
                                                of  survivorship  and  not as
                                                tenants in common
      UNIF GIFT MIN ACT                 --      __________ Custodian
                                                ______________________________
                                                (Cust)                 (Minor)

                                                under Uniform Gifts to Minor Act
                                                _____________________
                                                                     (State)

     Additional abbreviations may also be used though not in the above list.

<PAGE>


                                    EXHIBIT B

                             MORTGAGE LOAN SCHEDULE

                                (FILED MANUALLY)

<PAGE>


                                    EXHIBIT C

                              FORM OF CAP CONTRACT

                             (Provided Upon Request)

<PAGE>


                                    EXHIBIT D

                            FORM OF CORRIDOR CONTRACT

                             (Provided Upon Request)

<PAGE>


                                    EXHIBIT E

                             FORM OF SWAP AGREEMENT

                             (Provided Upon Request)

<PAGE>


                                    EXHIBIT F

                               INSURANCE AGREEMENT

                     FORM OF NOTE GUARANTY INSURANCE POLICY

OBLIGATIONS:  $221,112,000                                 POLICY NUMBER: 45527
              American Home Mortgage Investment
              Trust 2004-4
              Class VII-A HELOC-backed Notes,
              Series 2004-4

         MBIA Insurance Corporation (the "Insurer"), in consideration of the
payment of the premium and subject to the terms of this Note Guaranty Insurance
Policy (this "Policy"), hereby unconditionally and irrevocably guarantees to any
Owner that an amount equal to each full and complete Insured Payment will be
received from the Insurer by The Bank of New York, or its successors, as
indenture trustee for the Owners (the "Trustee"), on behalf of the Owners, for
distribution by the Trustee to each Owner of each Owner's proportionate share of
the Insured Payment. The Insurer's obligations hereunder with respect to a
particular Insured Payment shall be discharged to the extent funds equal to the
applicable Insured Payment are received by the Trustee, whether or not such
funds are properly applied by the Trustee. Insured Payments shall be made only
at the time set forth in this Policy, and no accelerated Insured Payments shall
be made regardless of any acceleration of the Obligations, unless such
acceleration is at the sole option of the Insurer.

         Notwithstanding the foregoing paragraph, this Policy does not cover
shortfalls, if any, attributable to the liability of the Trust or the Trustee
for withholding taxes, if any (including interest and penalties in respect of
any such liability).

         The Insurer will pay any Insured Payment that is a Preference Amount on
the Business Day following receipt on a Business Day by the Fiscal Agent (as
described below) of (a) a certified copy of the order requiring the return of a
preference payment, (b) an opinion of counsel satisfactory to the Insurer that
such order is final and not subject to appeal, (c) an assignment in such form as
is reasonably required by the Insurer, irrevocably assigning to the Insurer all
rights and claims of the Owner relating to or arising under the Obligations
against the debtor which made such preference payment or otherwise with respect
to such preference payment and (d) appropriate instruments to effect the
appointment of the Insurer as agent for such Owner in any legal proceeding
related to such preference payment, such instruments being in a form
satisfactory to the Insurer, provided that if such documents are received after
12:00 noon, New York City time, on such Business Day, they will be deemed to be
received on the following Business Day. Such payments shall be disbursed to the
receiver or trustee in bankruptcy named in the final order of the court
exercising jurisdiction on behalf of the Owner and not to any Owner directly
unless such Owner has returned principal or interest paid on the Obligations to
such receiver or trustee in bankruptcy, in which case such payment shall be
disbursed to such Owner.

         The Insurer will pay any other amount payable hereunder no later than
12:00 noon, New York City time, on the later of the Payment Date on which the
related Deficiency Amount is due or the third Business Day following receipt in
New York, New York on a Business Day by

<PAGE>


U. S. Bank Trust National Association, as Fiscal Agent for the Insurer, or any
successor fiscal agent appointed by the Insurer (the "Fiscal Agent"), of a
Notice (as described below), provided that if such Notice is received after
12:00 noon, New York City time, on such Business Day, it will be deemed to be
received on the following Business Day. If any such Notice received by the
Fiscal Agent is not in proper form or is otherwise insufficient for the purpose
of making claim hereunder, it shall be deemed not to have been received by the
Fiscal Agent for purposes of this paragraph, and the Insurer or the Fiscal
Agent, as the case may be, shall promptly so advise the Trustee and the Trustee
may submit an amended Notice.

         Insured Payments due hereunder, unless otherwise stated herein, will be
disbursed by the Fiscal Agent to the Trustee on behalf of the Owners by wire
transfer of immediately available funds in the amount of the Insured Payment
less, in respect of Insured Payments related to Preference Amounts, any amount
held by the Trustee for the payment of such Insured Payment and legally
available therefor.

         The Fiscal Agent is the agent of the Insurer only, and the Fiscal Agent
shall in no event be liable to Owners for any acts of the Fiscal Agent or any
failure of the Insurer to deposit, or cause to be deposited, sufficient funds to
make payments due under this Policy.

         Subject to the terms of the Agreement, the Insurer shall be subrogated
to the rights of each Owner to receive payments under the Obligations to the
extent of any payment by the Insurer hereunder.

         As used herein, the following terms shall have the following meanings:

         "Agreement" means the Indenture dated as of December 21 between
American Home Mortgage Investment Trust 2004-4, as Issuer, and the Trustee, as
trustee, without regard to any amendment or supplement thereto, unless such
amendment or supplement has been approved in writing by the Insurer.

         "Business Day" means any day other than (a) a Saturday or a Sunday (b)
a day on which the Insurer is closed or (c) a day on which banking institutions
in New York City or in the city in which the corporate trust office of the
Trustee under the Agreement is located are authorized or obligated by law or
executive order to close.

         "Deficiency Amount" means, with respect to any Payment Date, the sum of
(i) the Guaranteed Interest Payment on the Obligations, excluding any Relief Act
Shortfalls, Basis Risk Shortfall or Basis Risk Shortfall Carry-Forward Amount
for such Payment Date, and (ii) the Guaranteed Principal Payment Amount.

         "Guaranteed Interest Payment" means for any Payment Date, an amount
equal to the amount by which (a) accrued and unpaid interest for payment on the
Obligations, excluding any Relief Act Shortfalls at the Note Interest Rate
relating to the Obligations, exceeds (b) the amount available for interest
distributions on the Obligations on such Payment Date.

         "Guaranteed Principal Payment Amount" means with respect to any Payment
Date other than the Payment Date in September 2030, the excess, if any, by which
(a) the Note Principal Balance relating to the Obligations (after giving effect
to all payments of principal on the

<PAGE>


Obligations on such Payment Date, but without giving effect to payments under
the Policy to be made on such Payment Date) exceeds (b) the Invested Amount as
of the end of the related Due Period or, with respect to the Payment Date in
September 2030, the Note Principal Balance relating to the Obligations after
giving effect to all other distributions of principal of the Class VII-A Notes
on such Payment Date.

         "Insured Payment" means (a) as of any Payment Date, any Deficiency
Amount and (b) any Preference Amount.

         "Notice" means the telephonic or telegraphic notice, promptly confirmed
in writing by facsimile substantially in the form of Exhibit A attached hereto,
the original of which is subsequently delivered by registered or certified mail,
from the Trustee specifying the Insured Payment which shall be due and owing on
the applicable Payment Date.

         "Owner" means each Class VII-A Noteholder (as defined in the
Agreement), other than the Depositor or the Master Servicer, who, on the
applicable Payment Date, is entitled under the terms of the applicable Class
VII-A Notes to payment thereunder.

         "Preference Amount" means any amount previously distributed to an Owner
on the Obligations that is recoverable and sought to be recovered as a voidable
preference by a trustee in bankruptcy pursuant to the United States Bankruptcy
Code (11 U.S.C.), as amended from time to time in accordance with a final
nonappealable order of a court having competent jurisdiction.

         Capitalized terms used herein and not otherwise defined herein shall
have the respective meanings set forth in the Agreement as of the date of
execution of this Policy, without giving effect to any subsequent amendment to
or modification of the Agreement unless such amendment or modification has been
approved in writing by the Insurer.

         Any notice hereunder or service of process on the Fiscal Agent may be
made at the address listed below for the Fiscal Agent or such other address as
the Insurer shall specify in writing to the Trustee.

         The notice address of the Fiscal Agent is 15th Floor, 61 Broadway, New
York, New York 10006, Attention: Municipal Registrar and Paying Agency, or such
other address as the Fiscal Agent shall specify to the Trustee in writing.

         THIS POLICY IS BEING ISSUED UNDER AND PURSUANT TO, AND SHALL BE
CONSTRUED UNDER, THE LAWS OF THE STATE OF NEW YORK, WITHOUT GIVING EFFECT TO THE
CONFLICT OF LAWS PRINCIPLES THEREOF.

         The insurance provided by this Policy is not covered by the
Property/Casualty Insurance Security Fund specified in Article 76 of the New
York Insurance Law.

         This Policy is not cancelable for any reason. The premium on this
Policy is not refundable for any reason, including payment, or provision being
made for payment, prior to maturity of the Obligations.

<PAGE>


         IN WITNESS WHEREOF, the Insurer has caused this Policy to be executed
and attested this 21st day of December, 2004.

                                                   MBIA INSURANCE CORPORATION


                                                   By___________________________
                                                   Title________________________

Attest:


By _______________________________
   Secretary

<PAGE>


                                    EXHIBIT A

                           TO NOTE GUARANTY INSURANCE
                              POLICY NUMBER: 45527

                           NOTICE UNDER NOTE GUARANTY
                         INSURANCE POLICY NUMBER: 45527

U. S. Bank Trust National Association, as Fiscal Agent
   for MBIA Insurance Corporation
15th Floor
61 Broadway
New York, NY  10006
Attention:  Municipal Registrar and
   Paying Agency

MBIA Insurance Corporation
113 King Street
Armonk, NY  10504

         The undersigned, a duly authorized officer of The Bank of New York, as
indenture trustee (the "Trustee"), hereby certifies to U. S. Bank Trust National
Association (the "Fiscal Agent") and MBIA Insurance Corporation (the "Insurer"),
with reference to Note Guaranty Insurance Policy Number: 45527 (the "Policy")
issued by the Insurer in respect of the $221,112,000 American Home Mortgage
Investment Trust 2004-4, Class VII-A HELOC-backed Notes, Series 2004-4 (the
"Obligations"), that:

         (a)      Trustee is the indenture trustee under the Indenture dated as
of December 21, 2004 between American Home Mortgage Investment Trust 2004-4, as
Issuer, and the Trustee, as indenture trustee for the Owners;

         (b)      the amount due under clause (i) of the definition of
Deficiency Amount for the Payment Date occurring on [ ] (the "Applicable Payment
Date") is $[ ];

         (c)      the amount due under clause (ii) of the definition of
Deficiency Amount for the Applicable Payment Date is $[ ];

         (d)      the sum of the amounts listed in paragraphs (b) and (c) above
is $[ ] (the "Deficiency Amount");

         (e)      the amount of previously distributed payments on the
Obligations that is recoverable and sought to be recovered as a voidable
preference by a trustee in bankruptcy pursuant to the Bankruptcy Code in
accordance with a final nonappealable order of a court having competent
jurisdiction is $[ ] (the "Preference Amount");

         (f)      the total Insured Payment due is $[ ], which amount equals the
sum of the Deficiency Amount and the Preference Amount;

         (g)      the Trustee is making a claim under and pursuant to the terms
of the Policy for the dollar amount of the Insured Payment set forth in (d)
above to be applied to the payment of the Deficiency

<PAGE>


Amount for the Applicable Payment Date in accordance with the Agreement and for
the dollar amount of the Insured Payment set forth in (e) above to be applied to
the payment of any Preference Amount; and

         (h)      the Trustee directs that payment of the Insured Payment be
made to the following account by bank wire transfer of federal or other
immediately available funds in accordance with the terms of the Policy:
[TRUSTEE'S ACCOUNT NUMBER].

         Any capitalized term used in this Notice and not otherwise defined
herein shall have the meaning assigned thereto in the Policy.

         Any Person Who Knowingly And With Intent To Defraud Any Insurance
Company Or Other Person Files An Application For Insurance Or Statement Of Claim
Containing Any Materially False Information, Or Conceals For The Purpose Of
Misleading, Information Concerning Any Fact Material Thereto, Commits A
Fraudulent Insurance Act, Which Is A Crime, And Shall Also Be Subject To A Civil
Penalty Not To Exceed Five Thousand Dollars And The Stated Value Of The Claim
For Each Such Violation.

         IN WITNESS WHEREOF, the Trustee has executed and delivered this Notice
under the Policy as of the [ ] day of [ ], [ ].

                                              THE BANK OF NEW YORK, as Trustee


                                              By_______________________________
                                              Title____________________________

<PAGE>


                                    EXHIBIT G

                     FORM OF SUBSEQUENT TRANSFER INSTRUMENT

         Pursuant to this Subsequent Transfer Instrument, dated December [__],
2004 (the "Instrument"), between American Home Mortgage Securities LLC as seller
(the "Company"), and The Bank of New York, as indenture trustee of the American
Home Mortgage Investment Trust 2004-4, Mortgage-Backed Notes, Series 2004-4,
(the "Indenture Trustee"), on behalf of American Home Mortgage Investment Trust
2004-4 (the "Issuer"), as purchaser, and pursuant to the Indenture, dated as of
December 21, 2004 (the "Indenture"), between the Issuer and the Indenture
Trustee, as indenture trustee, the Company and the Indenture Trustee agree to
the sale by the Company and the purchase by the Indenture Trustee in trust, on
behalf of the Trust, of the Group [__] Subsequent Mortgage Loans on the attached
Schedule 1 of Mortgage Loans (the "Group [__] Subsequent Mortgage Loans").

         Capitalized terms used but not otherwise defined herein shall have the
meanings set forth in the Indenture.

         Section 1. Conveyance of Group [__] Subsequent Mortgage Loans;
Acceptance of Mortgage Loans by the Indenture Trustee.

         (a)      The Company does hereby sell, transfer, assign, set over and
convey to the Indenture Trustee in trust, on behalf of the Trust, without
recourse, all of its right, title and interest in and to the Group [__]
Subsequent Mortgage Loans, including all amounts due on the Group [__]
Subsequent Mortgage Loans after the related Subsequent Cut-off Date, and all
items with respect to the Group I Subsequent Mortgage Loans to be delivered
pursuant to Section 2. [__] of the Indenture; provided, however that the Company
reserves and retains all right, title and interest in and to amounts due on the
Group [__] Subsequent Mortgage Loans on or prior to the related Subsequent
Cut-off Date. The Company, contemporaneously with the delivery of this
Agreement, has delivered or caused to be delivered to the Indenture Trustee each
item set forth in Section 2.[__]of the Indenture. The transfer to the Indenture
Trustee by the Company of the Group [__] Subsequent Mortgage Loans identified on
the Mortgage Loan Schedule shall be absolute and is intended by the Company, the
[RMBS][HELOC] Master Servicer, the Indenture Trustee and the Noteholders to
constitute and to be treated as a sale by the Company to the Trust Fund.

         (b)      The Company, concurrently with the execution and delivery
hereof, does hereby transfer, assign, set over and otherwise convey to the
Indenture Trustee without recourse for the benefit of the Noteholders all the
right, title and interest of the Company, in, to and under the Subsequent
Mortgage Loan Purchase Agreement, dated December [__], 2004, between the
Company, as purchaser, and American Home Mortgage Acceptance Inc., as seller
(the "Purchase Agreement").

         (c)      The Indenture Trustee shall cause the Custodian as agent for
the Indenture Trustee to acknowledge receipt of, subject to the exceptions the
Custodian notes pursuant to the procedures described in Section 2.03 of the
Indenture, the documents (or certified copies thereof) referred to in Section
2.1(b) of the Subsequent Mortgage Loan Purchase Agreement, and

<PAGE>


declares that the Custodian hold and will continue to hold those documents and
any amendments, replacements or supplements thereto and all other assets of the
Trust Estate as agent for Indenture Trustee in trust for the use and benefit of
all present and future Holders of the Bonds.

         Additional terms of the sale are set forth on Attachment A hereto.

         Section 2. Representations and Warranties; Conditions Precedent.

         (a)      The Company hereby confirms that each of the conditions and
the representations and warranties set forth in Section 2.05 of the Indenture
are satisfied as of the date hereof.

         (b)      All terms and conditions of the Indenture are hereby ratified
and confirmed; provided, however, that in the event of any conflict, the
provisions of this Instrument shall control over the conflicting provisions of
the Indenture.

         Section 3. Recordation of Instrument.

         To the extent permitted by applicable law, this Instrument, or a
memorandum thereof if permitted under applicable law, is subject to recordation
in all appropriate public offices for real property records in all of 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
[RMBS][HELOC] Master Servicer at the Noteholders' expense on direction of the
related Noteholders, but only when accompanied by an Opinion of Counsel to the
effect that such recordation materially and beneficially affects the interests
of the Noteholders or is necessary for the administration or servicing of the
Group [__] Subsequent Mortgage Loans.

         Section 4. Governing Law.

         This Instrument shall be construed in accordance with the laws of the
State of New York and the obligations, rights and remedies of the parties
hereunder shall be determined in accordance with such laws, without giving
effect to principles of conflicts of law.

         Section 5. Counterparts.

         This Instrument may be executed in one or more counterparts and by the
different parties hereto on separate counterparts, each of which, when so
executed, shall be deemed to be an original; such counterparts, together, shall
constitute one and the same instrument.

         Section 6. Successors and Assigns.

         This Instrument shall inure to the benefit of and be binding upon the
Company and the Indenture Trustee and their respective successors and assigns.

<PAGE>


AMERICAN HOME MORTGAGE SECURITIES LLC,
as Seller


By:_______________________
Name:
Title:



THE BANK OF NEW YORK,
not in its individual capacity
but solely as Indenture Trustee for the Trust.


By:_______________________
Name:
Title:

<PAGE>

                                   EXHIBIT H

                                     FORM OF

                                 ADDITION NOTICE


                                                             [Date]
The Bank of New York
101 Barclay Street, 8E
New York, New York 10286


         RE:      Indenture, dated as of December 21, 2004, between American
                  Home Mortgage Investment Trust 2004-4, a Delaware business
                  trust, as Issuer (the "Issuer"), and The Bank of New York, as
                  Indenture Trustee (the "Indenture Trustee"), relating to
                  American Home Mortgage Investment Trust 2004-4,
                  Mortgage-Backed Notes, Series 2004-4, Group I, Group II, Group
                  III, Group IV, Group V, Group VI and Group VI Subsequent
                  Transfer

Ladies and Gentlemen:

                  Pursuant to Section 2.05 of the Indenture, Issuer has
designated the Group I Subsequent Mortgage Loans to be transferred to the
Indenture Trustee on [___________ , 20__], with an approximate aggregate
principal balance of $________________.

                  Pursuant to Section 2.06 of the Indenture, Issuer has
designated the Group II Subsequent Mortgage Loans to be transferred to the
Indenture Trustee on [___________ , 20__], with an approximate aggregate
principal balance of $________________.

                  Pursuant to Section 2.07 of the Indenture, Issuer has
designated the Group III Subsequent Mortgage Loans to be transferred to the
Indenture Trustee on [___________ , 20__], with an approximate aggregate
principal balance of $________________.

                  Pursuant to Section 2.08 of the Indenture, Issuer has
designated the Group IV Subsequent Mortgage Loans to be transferred to the
Indenture Trustee on [___________ , 20__], with an approximate aggregate
principal balance of $________________.

                  Pursuant to Section 2.09 of the Indenture, Issuer has
designated the Group V Subsequent Mortgage Loans to be transferred to the
Indenture Trustee on [___________ , 20__], with an approximate aggregate
principal balance of $________________.

                  Pursuant to Section 2.10 of the Indenture, Issuer has
designated the Group VI Subsequent Mortgage Loans to be transferred to the
Indenture Trustee on [___________ , 20__], with an approximate aggregate
principal balance of $________________.

<PAGE>


                  Pursuant to Section 2.11 of the Indenture, Issuer has
designated the Group VII Subsequent Mortgage Loans to be transferred to the
Indenture Trustee on [___________ , 20__], with an approximate aggregate
principal balance of $________________.

         Capitalized terms not otherwise defined herein have the meaning set
forth in the Indenture.

                  Please acknowledge your receipt of this notice by
countersigning the enclosed copy in the space indicated below and returning it
to the attention of the undersigned.

<PAGE>


                                                Very truly yours,

                                                AMERICAN HOME MORTGAGE
                                                INVESTMENT TRUST 2004-4,
                                                as Issuer Wilmington
                                                Trust Company, not in
                                                its individual capacity
                                                but solely as Owner
                                                Trustee


                                                By:_____________________________
                                                Name:
                                                Title:

<PAGE>


ACKNOWLEDGED AND AGREED:

THE BANK OF NEW YORK, not in its
individual capacity but solely as Indenture
Trustee for the Trust.


By:_______________
Name:
Title:

<PAGE>


                                   APPENDIX A
                                   DEFINITIONS

         ADDITION NOTICE: With respect to the transfer of Group I, Group II,
Group III, Group IV, Group V, Group VI and Group VII Subsequent Mortgage Loans
to the Trust Estate pursuant to Sections 2.05 through 2.11, respectively, a
notice of the Company's designation of the related Group I, Group II, Group III,
Group IV, Group V, Group VI and Group VII Subsequent Mortgage Loans to be sold
to the Trust Estate and the related aggregate Stated Principal Balance of such
Group I, Group II, Group III, Group IV, Group V, Group VI and Group VII
Subsequent Mortgage Loans as of the related Subsequent Cut-off Date. The
Addition Notice shall be given not later than three Business Days prior to the
related Subsequent Transfer Date and shall be substantially in the form of
Exhibit H.

         ACCEPTED SERVICING PRACTICES: The HELOC Master Servicer's or HELOC
Subservicer's normal servicing practices in servicing and administering
revolving home equity line of credit Mortgage Loans for its own account, which
in general will conform to the mortgage servicing practices of prudent mortgage
lending institutions which service for their own account, Mortgage Loans of the
same type as the HELOC Mortgage Loans in the jurisdictions in which the related
Mortgaged Properties are located.

         ACCRUAL PERIOD: With respect to any Payment Date and each Class of
Class A Notes, Class M and Class B Notes, except for the Class IV-A, Class V-A
and Class VI-A Notes, the period from the preceding Payment Date (or in the case
of the first Payment Date, from the Closing Date) through the day preceding such
Payment Date. With respect to any Payment Date and the Class IV-A, Class V-A
Class VI-A and Class N Notes, the prior calendar month. Accrued Note Interest
for the Class I-A, Class II-A, Class III-A, Class M, Class VI-M and Class VI-B
Notes shall be calculated on the basis of the actual number of days in the
Accrual Period and a 360-day year. Accrued Note Interest on the Class IV-A,
Class V-A, Class VI-A and Class N Notes shall be calculated on the basis of the
360-day year consisting of twelve 30-day months.

         ACCRUED NOTE INTEREST: With respect to any Payment Date and each class
of Notes, interest accrued during the related Accrual Period at the
then-applicable Note Interest Rate on the related Note Principal Balance thereof
immediately prior to such Payment Date, plus any Accrued Note Interest remaining
unpaid from any prior Payment Date with interest thereon at the related Note
Interest Rate.

         ADDITIONAL BALANCE: As to any HELOC Mortgage Loan and day, the
aggregate amount of all Draws conveyed to the Trust pursuant to the Mortgage
Loan Purchase Agreement.

         ADDITIONAL DERIVATIVE CONTRACT COUNTERPARTY PAYMENT: With respect to
any Payment Date, any termination payments to the Swap Agreement Counterparty in
connection with (i) an Event of Default under a Swap Agreement with respect to
which the Swap Agreement Counterparty is a Defaulting Party or (ii) a
Termination Event under a Swap Agreement with respect to which the Swap
Agreement Counterparty is the sole Affected Party.

         ADDITIONAL NEGATIVE AMORTIZATION PRINCIPAL AMOUNT: For any Payment
Date, the excess, if any, of (x) the Negative Amortization Amount over (y) the
Principal Remittance Amount for the Group I Loans (without regarding to the last
sentence of the definition thereof).

<PAGE>


         ADJUSTMENT FRACTION: For any Payment Date with respect to the Class
I-A, Class II-A, Class III-A, Class IV-A, Class V-A Notes and Class M Notes, a
fraction, (x) the numerator of which is the aggregate Stated Principal Balance
of the Group I, Group II, Group III, Group IV and Group V Loans at the beginning
of the related Due Period, and (y) the denominator of which is the aggregate
Note Principal Balance of the Class I-A, Class II-A, Class III-A, Class IV-A,
Class V-A and Class M Notes immediately prior to that Payment Date. For any
Payment Date with respect to the Class VI-A, Class VI-M and Class VI-B Notes, a
fraction, (x) the numerator of which is the aggregate Stated Principal Balance
of the Group VI Loans at the beginning of the related Due Period, and (y) the
denominator of which is the aggregate Note Principal Balance of the Class VI-A,
Class VI-M and Class VI-B Notes immediately prior to that Payment Date.

         ADJUSTMENT DATE: As to each Mortgage Loan, each date set forth in the
related Mortgage Note on which an adjustment to the interest rate on such
Mortgage Loan becomes effective.

         AFFILIATE: With respect to any Person, any other Person controlling,
controlled by or under common control with such Person. For purposes of this
definition, "control" means the power to direct the management and policies of a
Person, directly or indirectly, whether through ownership of voting securities,
by contract or otherwise and "controlling" and "controlled" shall have meanings
correlative to the foregoing.

         ALLOCATED REALIZED LOSS AMOUNT: With respect to any class of Class
I-A-2, Class II-A-2, Class M, Class VI-M and Class VI-B Notes and any Payment
Date, an amount equal to the sum of any Realized Loss allocated to that Class of
Notes on that Payment Date and any Allocated Realized Loss Amount for that Class
remaining unpaid from the previous Payment Date, in each case, with interest
thereon at the applicable Note Interest Rate for such Payment Date for such
Class for the related Accrual Period.

         APPRAISED VALUE: The appraised value of a Mortgaged Property based upon
the appraisal made by or for the Seller, in compliance with the Seller's
underwriting criteria, of such Mortgaged Property at such time of origination.
With respect to a Mortgage Loan, the proceeds of which were used to refinance an
existing Mortgage Loan, the appraised value of the Mortgaged Property based upon
the appraisal obtained at the time of refinancing.

         ARM LOANS: At any time, collectively, all the Mortgage Loans, excluding
HELOC Mortgage Loans, which have adjustable Mortgage Rates.

         ASSIGNMENT OF MORTGAGE: An assignment of Mortgage, notice of transfer
or equivalent instrument, in recordable form, which is sufficient under the laws
of the jurisdiction wherein the related Mortgaged Property is located to reflect
of record the sale of the Mortgage, which assignment, notice of transfer or
equivalent instrument may be in the form of one or more


                                       2
<PAGE>


blanket assignments covering Mortgages secured by Mortgaged Properties located
in the same county, if permitted by law.

         AUTHORIZED NEWSPAPER: A newspaper of general circulation in the Borough
of Manhattan, The City of New York, printed in the English language and
customarily published on each Business Day, whether or not published on
Saturdays, Sundays or holidays.

         AUTHORIZED OFFICER: With respect to the Issuer, any officer of the
Owner Trustee who is authorized to act for the Owner Trustee in matters relating
to the Issuer and who is identified on the list of Authorized Officers delivered
by the Owner Trustee to the Indenture Trustee on the Closing Date (as such list
may be modified or supplemented from time to time thereafter).

         AVAILABLE FUNDS: The Group I, Group II, Group III, Group IV, Group V or
Group VI Available Funds, as applicable.

         AVAILABLE FUNDS RATE: On any Payment Date and any class of Class I-A,
Class II-A, Class III-A, Class IV-A, Class V-A or Class VI-A Notes, the per
annum rate equal to (a) the sum of (1) the weighted average of the Net Mortgage
Rates on the related Mortgage Loans included in the trust as of the end of the
prior Due Period, weighted on the basis of the Stated Principal Balances thereof
as of the end of the prior Due Period, and (2) the amount of interest earned on
amounts on deposit in the related Pre-Funding Account from the prior Payment
Date to the current Payment Date, expressed as a percentage of the related
Pre-Funded Amount at the end of the prior Due Period and converted to a per
annum rate, weighted on the basis of the related Pre-Funded Amount as of the end
of the related Due Period, less (3) with respect to the Class I-A Notes only,
the Additional Negative Amortization Principal Amount, expressed as a percentage
of the aggregate Note Principal Balance of the Class I-A Notes, times (b) in the
case of the Class I-A, Class II-A and Class III-A Notes only, a fraction equal
to (x) 30 divided by (y) the number of days in the related Accrual Period and
times (c) the related Adjustment Fraction.

         On any Payment Date and the Class VII-A Notes, the per annum rate equal
to (a) the sum of (1) the weighted average of the Net Mortgage Rates of the
HELOC Mortgage Loans in Loan Group VII included in the trust as of the end of
the prior Due Period, weighted on the basis of the Stated Principal Balances
thereof as of the end of the prior Due Period, and (2) the amount of interest
earned on amounts on deposit in the related Pre-Funding Account from the prior
Payment Date to the current Payment Date, expressed as a percentage of the
related Pre-Funded Amount at the end of the prior Due Period and converted to a
per annum rate, weighted on the basis of the related Pre-Funded Amount as of the
end of the related Due Period, times (b) a fraction equal to (x) 30 divided by
(y) the number of days in the related Accrual Period.

         On any Payment Date and any class of Class M Notes, the per annum rate
equal to (a) the sum of (1) the weighted average of the Net Mortgage Rates of
the Mortgage Loans in Loan Group I, Loan Group II, Loan Group III, Loan Group IV
and Loan Group V included in the trust as of the end of the prior Due Period,
weighted on the basis of the Stated Principal Balances thereof as of the end of
the prior Due Period, weighted in proportion to the results of subtracting from
the aggregate Stated Principal Balance of the Mortgage Loans of Loan Group I,
Loan Group II, Loan Group III, Loan Group IV and Loan Group V, the aggregate
Note Principal Balance of the related Class I-A, Class II-A, Class III-A, Class
IV-A and Class V-A Notes, respectively, and (2) the amount of interest earned on
amounts on deposit in the related Pre-Funding Account from the prior Payment
Date to the current Payment Date, expressed as a percentage of the related
Pre-Funded Amount at the end of the prior Due Period and converted to a per
annum rate, weighted on the basis of the related Pre-Funded Amount as of the end
of the related Due Period, times (b) a fraction equal to (x) 30 divided by (y)
the number of days in the related Accrual Period and times (c) the related
Adjustment Fraction.


                                       3
<PAGE>


         On any Payment Date and any class of Class VI-M Notes and Class VI-B
Notes, the per annum rate equal to the (a) the sum of (1) the weighted average
of the Net Mortgage Rates of the Mortgage Loans in Loan Group VI included in the
trust as of the end of the prior Due Period, and (2) the amount of interest
earned on amounts on deposit in the related Pre-Funding Account from the prior
Payment Date to the current Payment Date, expressed as a percentage of the
related Pre-Funded Amount at the end of the prior Due Period and converted to a
per annum rate, weighted on the basis of the related Pre-Funded Amount as of the
end of the related Due Period, times (b) a fraction equal to (x) 30 divided by
(y) the number of days in the related Accrual Period and times (c) the related
Adjustment Fraction.

         BANKRUPTCY CODE: The Bankruptcy Code of 1978, as amended.

         BASIC DOCUMENTS: The Trust Agreement, the Certificate of Trust, the
Indenture, the Custodial Agreement, the Notes, the Trust Certificates, the HELOC
Servicing Agreement, the RMBS Servicing Agreement, the Mortgage Loan Purchase
Agreement, the Swap Agreement, the Cap Contracts, the Corridor Contract, the
Insurance Agreement and the other documents and certificates delivered in
connection with any of the above.

         BASIC PRINCIPAL DISTRIBUTION AMOUNT: With respect to any Payment Date
and Loan Group I, Loan Group II, Loan Group III, Loan Group IV and Loan Group V,
the lesser of (a) the excess of (i) the sum of the related Available Funds for
such Payment Date over (ii) the aggregate amount of Accrued Note Interest for
the Class I-A, Class II-A, Class III-A, Class IV-A, Class V-A and Class M Notes
for such Payment Date and (b) the related Principal Remittance Amount for the
Group I, Group II, Group III, Group IV and Group V Loans for such Payment Date.
With respect to any Payment Date and Loan Group VI, the lesser of (a) the excess
of (i) the related Available Funds for such Payment Date over (ii) the aggregate
amount of Accrued Note Interest for the Class VI-A, Class VI-M and Class VI-B
Notes for such Payment Date and (b) the related Principal Remittance Amount for
the Group VI Loans for such Payment Date.

         BASIS RISK SHORTFALL: With respect to any class of LIBOR Notes, except
the Class VII-A Notes, on each Payment Date where clause (iii) of the definition
of "Note Interest Rate" is less than clauses (i) or (ii) of the definition of
"Note Interest Rate," the excess, if any, of (x) the aggregate Accrued Note
Interest thereon for such Payment Date calculated pursuant to the lesser of
clause (i) or (ii) of the definition of Note Interest Rate over (y) Accrued Note
Interest thereon for such Payment Date calculated at the related Available Funds
Rate. With respect to the Class VII-A Notes, on each Payment Date where clause
(y) of the definition of Note Interest Rate is


                                       4
<PAGE>


less than clause (x) of the definition of Note Interest Rate, the excess, if
any, of the aggregate Accrued Note Interest thereon for such Payment Date
calculated pursuant to clause (x) of the definition of Note Interest Rate over
Accrued Note Interest thereon for such Payment Date calculated at the related
Available Funds Rate.

         BASIS RISK SHORTFALL CARRY-FORWARD AMOUNT: With respect to each class
of LIBOR Notes and any Payment Date, as determined separately for each such
class of Notes, an amount equal to the aggregate amount of Basis Risk Shortfall
for such Notes on such Payment Date, plus any unpaid Basis Risk Shortfall for
such class of Notes from prior Payment Dates, plus interest thereon at the Note
Interest Rate for such Payment Date for such class for the related Accrual
Period, to the extent previously unreimbursed by the Net Monthly Excess Cashflow
or payments received by the Indenture Trustee under the Cap Contracts or
Corridor Contract.

         BENEFICIAL OWNER: With respect to any Book-Entry Note, the Person who
is the beneficial owner of such Note as reflected on the books of the Depository
or on the books of a Person maintaining an account with such Depository
(directly as a Depository Participant or indirectly through a Depository
Participant, in accordance with the rules of such Depository).

         BOOK-ENTRY NOTES: Beneficial interests in the Notes, ownership and
transfers of which shall be made through book entries by the Depository as
described in Section 4.06 of the Indenture.

         BUSINESS DAY: Any day other than (i) a Saturday or a Sunday or (ii) a
day on which banking institutions in the City of New York, Delaware or Maryland
or in the city in which a Corporate Trust Office is located, is required or
authorized by law to be closed.

         CALENDAR QUARTER: A Calendar Quarter shall consist of one of the
following time periods in any given year: January 1 through March 31, April 1
through June 30, July 1 though September 30, and October 1 through December 31.

         CAP CONTRACT ALLOCATION AMOUNT: With respect to any Payment Date and
each class of Class M Notes, the amount received with respect to the Cap
Contracts for the Class M Notes for that Payment Date times a fraction, the
numerator of which is the Note Principal Balance of such class of Notes
immediately prior to that Payment Date, and denominator of which is the
aggregate Note Principal Balance of the Class M Notes immediately prior to that
Payment Date.

         CAP CONTRACTS: The interest rate cap contracts between the Indenture
Trustee and the Cap Contract Counterparty for the benefit of the Class M Notes,
a form of which is set forth in Exhibit C of the Indenture.

         CAP CONTRACT COUNTERPARTY: Bear Stearns Financial Products, Inc.

         CAP RATE: With respect to each Cap Contract and each Payment Date, the
fixed rate set forth in the Cap Contract used to determine payments to the
Indenture Trustee. With respect to each Corridor Contract and each Payment Date,
the fixed rate set forth in the Corridor Contract used to determine payments to
the Indenture Trustee.

         CASH LIQUIDATION: As to any defaulted Mortgage Loan other than a
Mortgage Loan as to which an REO Acquisition occurred, a determination by the
RMBS Master Servicer evidenced in a certificate of a Servicing Officer that it
has received all Insurance Proceeds, Liquidation


                                       5
<PAGE>


Proceeds and other payments or cash recoveries which the RMBS Master Servicer
reasonably and in good faith expects to be finally recoverable with respect to
such Mortgage Loan.

         CEILING RATE: With respect to each Corridor Contract and each Payment
Date, the fixed rate set forth in the Corridor Contract used to determine
payments to the Indenture Trustee.

         CERTIFICATE DISTRIBUTION ACCOUNT: The account or accounts created and
maintained pursuant to Section 3.10(c) of the Trust Agreement. The Certificate
Distribution Account shall be an Eligible Account.

         CERTIFICATE PAYING AGENT: Initially, The Bank of New York, in its
capacity as Certificate Paying Agent, or any successor to the Indenture Trustee
in such capacity.

         CERTIFICATE PERCENTAGE INTEREST: With respect to each Certificate, the
Certificate Percentage Interest stated on the face thereof.

         CERTIFICATE REGISTER: The register maintained by the Certificate
Registrar in which the Certificate Registrar shall provide for the registration
of Certificates and of transfers and exchanges of Certificates.

         CERTIFICATE REGISTRAR: Initially, The Bank of New York, in its capacity
as Certificate Registrar, or any successor to the Indenture Trustee in such
capacity.

         CERTIFICATE OF TRUST: The Certificate of Trust filed for the Trust
pursuant to Section 3810(a) of the Statutory Trust Statute.

         CERTIFICATES OR TRUST CERTIFICATES: The American Home Mortgage
Investment Trust 2004-4 Trust Certificates, Series 2004-4, evidencing the
beneficial ownership interest in the Issuer and executed by the Owner Trustee in
substantially the form set forth in Exhibit A to the Trust Agreement.

         CERTIFICATEHOLDER OR HOLDER: The Person in whose name a Certificate is
registered in the Certificate Register. Owners of Certificates that have been
pledged in good faith may be regarded as Holders if the pledgee establishes to
the satisfaction of the Certificate Registrar or the Owner Trustee, as the case
may be, the pledgee's right so to act with respect to such Certificates and that
the pledgee is not the Issuer, any other obligor upon the Certificates or any
Affiliate of any of the foregoing Persons.

         CHARGE-OFF AMOUNT: For any Charged-Off HELOC Mortgage Loan, the amount
of the Stated Principal Balance that has been written down.

         CHARGED-OFF HELOC MORTGAGE LOAN: A HELOC Mortgage Loan with a Stated
Principal Balance that has been written down on the HELOC Subservicer's
servicing system in accordance with its policies and procedures and any HELOC
that is more than 180 days past due.

         CLASS: Any of the Class A, Class M, Class VI-M, Class VI-B or Class N
Notes.


                                       6
<PAGE>


         CLASS A NOTES: The Class I-A, Class II-A, Class III-A, Class IV-A,
Class V-A, Class VI-A and Class VII-A Notes in the form attached as Exhibit A-1
to the Indenture.

         CLASS A PRINCIPAL ALLOCATION FRACTION: For any Payment Date and each
class of Class I-A, Class II-A, Class III-A, Class IV-A and Class V-A Notes, a
fraction, (x) the numerator of which is the Principal Remittance Amount with
respect to the Mortgage Loans in the related Loan Group to be distributed on
that Payment Date, and (y) the denominator of which is the Principal Remittance
Amount for all of the Mortgage Loans in Loan Group I, Loan Group II, Loan Group
III, Loan Group IV and Loan Group V to be distributed on that Payment Date.

         CLASS A PRINCIPAL DISTRIBUTION AMOUNT: For any applicable Payment Date
on or after the related Stepdown Date as long as a related Trigger Event has not
occurred with respect to such Payment Date, an amount equal to the lesser of (A)
the related Principal Distribution Amount for such Payment Date and (B) the
excess (if any) of (x) the aggregate Note Principal Balance of the Class I-A,
Class II-A, Class III-A, Class IV-A and Class V-A Notes immediately prior to
such Payment Date over (y) the lesser of (a) the aggregate Stated Principal
Balance of the Group I, Group II, Group III, Group IV and Group V Loans as of
the last day of the related Due Period (after giving effect to scheduled
payments of principal due during the related Due Period, to the extent received
or advanced, and unscheduled collections of principal received during the
related Prepayment Period, and after reduction for Realized Losses incurred
during the related Prepayment Period) multiplied by approximately 86.00% and (b)
the amount, if any, by which (i) the aggregate Stated Principal Balance of the
Group I, Group II, Group III, Group IV and Group V Loans as of the last day of
the related Due Period (after giving effect to scheduled payments of principal
due during the related Due Period, to the extent received or advanced, and
unscheduled collections of principal received during the related Prepayment
Period, and after reduction for Realized Losses incurred during the related
Prepayment Period) exceeds (ii) 0.35% of the sum of the Group I, Group II, Group
III, Group IV and Group V Cut-off Date Balances.

         CLASS M NOTES: The Class M-1, Class M-2, Class M-3 Notes in the form
attached as Exhibit A-2 to the Indenture.

         CLASS M-1 PRINCIPAL DISTRIBUTION AMOUNT: For any applicable Payment
Date on or after the Stepdown Date as long as a Trigger Event has not occurred
with respect to such Payment Date, an amount equal to the excess (if any) of (x)
the sum of (i) the aggregate Note Principal Balance of the Class I-A, Class
II-A, Class III-A, Class IV-A and Class V-A Notes (after taking into account the
distribution of the Class A Principal Distribution Amounts on such Payment Date)
and (ii) the Note Principal Balance of the Class M-1 Notes immediately prior to
such Payment Date over (y) the lesser of (a) the aggregate Stated Principal
Balance of the Group I, Group II, Group III, Group IV and Group V Loans as of
the last day of the related Due Period (after giving effect to scheduled
payments of principal due during the related Due Period, to the extent received
or advanced, and unscheduled collections of principal received during the
related Prepayment Period, and after reduction for Realized Losses incurred
during the related Prepayment Period) multiplied by approximately 92.60% and (b)
the amount, if any, by which (i) the aggregate Stated Principal Balance of the
Group I, Group II, Group III, Group IV and Group V Loans as of the last day of
the related Due Period (after giving effect to scheduled payments of principal
due during the related Due Period, to the extent received or advanced, and
unscheduled collections of principal received during the related Prepayment
Period, and after reduction for


                                       7
<PAGE>


Realized Losses incurred during the related Prepayment Period) exceeds (ii)
0.35% of the sum of the Group I, Group II, Group III, Group IV and Group V
Cut-off Date Balances.

         CLASS M-2 PRINCIPAL DISTRIBUTION AMOUNT: For any applicable Payment
Date on or after the Stepdown Date as long as a Trigger Event has not occurred
with respect to such Payment Date, an amount equal to the excess (if any) of (x)
the sum of (i) the aggregate Note Principal Balance of the Class I-A, Class
II-A, Class III-A, Class IV-A, Class V-A and Class M-1 Notes (after taking into
account the distribution of the Class A and Class M-1 Principal Distribution
Amounts on such Payment Date) and (ii) the Note Principal Balance of the Class
M-2 Notes immediately prior to such Payment Date over (y) the lesser of (a) the
aggregate Stated Principal Balance of the Group I, Group II, Group III, Group IV
and Group V Loans as of the last day of the related Due Period (after giving
effect to scheduled payments of principal due during the related Due Period, to
the extent received or advanced, and unscheduled collections of principal
received during the related Prepayment Period, and after reduction for Realized
Losses incurred during the related Prepayment Period) multiplied by
approximately 97.50% and (b) the amount, if any, by which (i) the aggregate
Stated Principal Balance of the Group I, Group II, Group III, Group IV and Group
V Loans as of the last day of the related Due Period (after giving effect to
scheduled payments of principal due during the related Due Period, to the extent
received or advanced, and unscheduled collections of principal received during
the related Prepayment Period, and after reduction for Realized Losses incurred
during the related Prepayment Period) exceeds (ii) 0.35% of the sum of the Group
I, Group II, Group III, Group IV and Group V Cut-off Date Balances.

         CLASS M-3 PRINCIPAL DISTRIBUTION AMOUNT: For any applicable Payment
Date on or after the Stepdown Date as long as a Trigger Event has not occurred
with respect to such Payment Date, an amount equal to the excess (if any) of (x)
the sum of (i) the aggregate Note Principal Balance of the Class I-A, Class
II-A, Class III-A, Class IV-A, Class V-A, Class M-1 and Class M-2 Notes (after
taking into account the distribution of the Class A, Class M-1 and Class M-2
Principal Distribution Amounts on such Payment Date) and (ii) the Note Principal
Balance of the Class M-3 Notes immediately prior to such Payment Date over (y)
the lesser of (a) the aggregate Stated Principal Balance of the Group I, Group
II, Group III, Group IV and Group V Loans as of the last day of the related Due
Period (after giving effect to scheduled payments of principal due during the
related Due Period, to the extent received or advanced, and unscheduled
collections of principal received during the related Prepayment Period, and
after reduction for Realized Losses incurred during the related Prepayment
Period) multiplied by approximately 99.30% and (b) the amount, if any, by which
(i) the aggregate Stated Principal Balance of the Group I, Group II, Group III,
Group IV and Group V Loans as of the last day of the related Due Period (after
giving effect to scheduled payments of principal due during the related Due
Period, to the extent received or advanced, and unscheduled collections of
principal received during the related Prepayment Period, and after reduction for
Realized Losses incurred during the related Prepayment Period) exceeds (ii)
0.35% of the sum of the Group I, Group II, Group III, Group IV and Group V
Cut-off Date Balances.

         CLASS VI NOTES: The Class VI-A, Class VI-M and Class VI-B Notes.

         CLASS VI-A NOTES:  The Class VI-A-1 Notes and Class VI-A-2 Notes.


                                       8
<PAGE>

         CLASS VI-B NOTES: The Class VI-B-1, Class VI-B-2 and Class VI-B-3
Notes.

         CLASS VI-M NOTES: The Class VI-M-1, Class VI-M-2 and Class VI-M-3
Notes.

         CLASS N NOTES: The Class N Notes in the form attached as Exhibit A-3 to
the Indenture.

         CLEARING AGENCY: An organization registered as a "clearing agency"
pursuant to Section 17A of the Securities and Exchange Act of 1934, as amended,
which initially shall be the Depository.

         CLOSING DATE: December 21, 2004.

         CODE: The Internal Revenue Code of 1986, as amended, and the rules and
regulations promulgated thereunder.

         COLLATERAL: The meaning specified in the Granting Clause of the
Indenture.

         COLLECTION ACCOUNT: The account or accounts created and maintained by
the HELOC Master Servicer, RMBS Master Servicer and HELOC Subservicer, as
applicable, pursuant to Section 3.06(d) of each of the HELOC Servicing
Agreement, the RMBS Servicing Agreement and the HELOC Subservicing Agreement.
Each Collection Account shall be an Eligible Account.

         COMBINED LOAN-TO-VALUE RATIO OR CLTV: With respect to any HELOC
Mortgage Loan, the sum of the Credit Limit of such HELOC Mortgage Loan at the
time such HELOC Mortgage Loan was originated or at the time such HELOC Mortgage
Loan is modified pursuant to Section 3.01 of the HELOC Servicing Agreement or
the HELOC Subservicing Agreement, as applicable, and the outstanding principal
balance of the Senior Lien(s), if any, as of the date of origination of the
HELOC Mortgage Loan, divided by the Appraised Value.

         COMMISSION: The Securities and Exchange Commission.

         COMPENSATING INTEREST: With respect to any Payment Date as determined
separately for each Loan Group, the amount of any Prepayment Interest Shortfalls
resulting from prepayments in full or in part during the preceding calendar
month on the related Mortgage Loans, excluding HELOC Mortgage Loans, but only to
the extent such Prepayment Interest Shortfalls do not exceed the Master
Servicing Fee for such Payment Date. There shall be no obligation to pay
Compensating Interest with respect to any HELOC Mortgage Loan.

         CONFORMING BALANCE: A Mortgage Loan has a Conforming Balance if it is
secured by a single family property with a maximum original principal balance of
$359,650 or less for all Mortgage Loans other than those originated in Alaska
and Hawaii, for which the maximum balance is $539,475. For Mortgage Loans
secured by two-, three- and four-family properties the maximum balance is
$460,400, $556,500 or $691,600, respectively, or $690,600, $835,584 and
$1,037,400, respectively, if the property is located in Alaska or Hawaii.

         CORPORATE TRUST OFFICE: With respect to the Indenture Trustee,
Certificate Registrar, Certificate Paying Agent and Paying Agent, the principal
corporate trust office of the Indenture


                                       9
<PAGE>


Trustee and Note Registrar at which at any particular time its corporate trust
business shall be administered, which office at the date of the execution of
this instrument is located at 101 Barclay Street, New York, New York 10286
(Attention: Corporate Trust MBS Administration), telephone: (212) 815-3236,
facsimile: (212) 815-3883. With respect to the Owner Trustee, the principal
corporate trust office of the Owner Trustee at which at any particular time its
corporate trust business shall be administered, which office at the date of the
execution of this Trust Agreement is located at Wilmington Trust Company, Rodney
Square North, 1100 North Market Street, Wilmington, Delaware 19801, Attention:
American Home Mortgage Investment Trust 2004-4.

         CORRIDOR CONTRACT ALLOCATION AMOUNT: With respect to any Payment Date
and the Class I-A Notes, the amount received with respect to the Corridor
Contract for the Class I-A Notes for that Payment Date times a fraction, the
numerator of which is the Note Principal Balance of such class of Notes
immediately prior to that Payment Date, and denominator of which is the
aggregate Note Principal Balance of the Class A Notes immediately prior to that
Payment Date.

         CORRIDOR CONTRACT COUNTERPARTY: Bear Stearns Financial Products, Inc.

         CORRIDOR CONTRACT: The interest rate corridor contracts between the
Indenture Trustee and the Derivative Contract Counterparty for the benefit of
the Class I-A Notes, a form of which is attached as Exhibit D to the Indenture.

         CREDIT ENHANCEMENT PERCENTAGE: With respect to the Class I-A, Class
II-A, Class III-A, Class IV-A and Class V-A Notes and any Payment Date, the sum
of the aggregate Note Principal Balance of the Class M Notes and the related
Overcollateralized Amount.

         CREDIT LIMIT: With respect to any HELOC Mortgage Loan, the maximum
unpaid principal balance permitted under the terms of the related Mortgage Note.

         CREDIT LINE AGREEMENT: With respect to any Loan, the credit line
account agreement executed by the related Mortgagor and any amendment or
modification thereof.

         CROSSABLE EXCESS: On any Payment Date, the amount of Net Monthly Excess
Cashflow related to the Group I, Group II, Group III, Group IV and Group V Loans
and the Group VI Loans, which is distributable as provided Section 3.07(d) of
the Indenture.

         CUMULATIVE LOSSES: As to any Payment Date and the Mortgage Loans, the
cumulative aggregate amount of Realized Losses on the Mortgage Loans from the
Cut-off Date through the end of the calendar month immediately preceding such
Payment Date.

         CUSTODIAN: Deutsche Bank National Trust Company, or its successor in
interest.

         CUSTODIAL AGREEMENT: The Custodial Agreement, dated as of the Closing
Date, by and among the Indenture Trustee, the Depositor, the RMBS Master
Servicer, the HELOC Master Servicer and the Custodian.

         CUT-OFF DATE: With respect to the initial Mortgage Loans, December 1,
2004, and with respect to the initial HELOC Mortgage Loans, the close of
business on November 30, 2004, and with respect to the subsequent Mortgage Loans
or subsequent HELOC Mortgage Loans, the applicable Subsequent Cut-off Date.


                                       10
<PAGE>


         CUT-OFF DATE BALANCE: The aggregate Stated Principal Balance of the
Mortgage Loans as of the Cut-off Date.

         CUT-OFF DATE PRINCIPAL BALANCE: With respect to any Mortgage Loan that
is not a HELOC Mortgage Loan, the unpaid principal balance thereof as of the
Cut-off Date after applying the principal portion of Monthly Payments due on or
before such date, whether or not received, and without regard to any payments
due after such date. With respect to any HELOC Mortgage Loan, the unpaid
principal balance thereof as of the Cut-off Date.

         DEBT SERVICE REDUCTION: With respect to any Mortgage Loan other than a
HELOC Mortgage Loan, a reduction in the scheduled Monthly Payment for such
Mortgage Loan by a court of competent jurisdiction in a proceeding under the
Bankruptcy Code, except such a reduction constituting a Deficient Valuation or
any reduction that results in a permanent forgiveness of principal.

         DEFAULT: Any occurrence which with notice or the lapse of time or both
would become an Event of Default.

         DEFAULT PENALTY RATE BALANCE: The Stated Principal Balance of any HELOC
Mortgage Loan with respect to which the Default Penalty Rate Feature is in
effect.

         DEFAULT PENALTY RATE FEATURE: An feature that permits the HELOC Master
Servicer or HELOC Subservicer to increase the HELOC Loan Rate on a Delinquent
HELOC Mortgage Loan.

         DEFICIENCY AMOUNT: With respect to any Payment Date, the sum of (i) the
Guaranteed Interest Payment, excluding any Relief Act Shortfalls, Basis Risk
Shortfalls or Basis Risk Shortfall Carry-Forward Amount for such Payment Date,
and (ii) the Guaranteed Principal Payment Amount.

         DEFICIENT VALUATION: With respect to any Mortgage Loan that is not a
HELOC 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 Monthly Payment that constitutes a permanent
forgiveness of principal, which valuation or reduction results from a proceeding
under the Bankruptcy Code.

         DEFINITIVE NOTES: The meaning specified in Section 4.06 of the
Indenture.

         DELETED MORTGAGE LOAN: A Mortgage Loan replaced or to be replaced with
an Eligible Substitute Mortgage Loan.

         DELINQUENCY RATE: For any month, the fraction, expressed as a
percentage, the numerator of which is the aggregate outstanding principal
balance of all Mortgage Loans 60 or more days delinquent (including all
foreclosures, Mortgage Loans subject to bankruptcy proceedings and REO
Properties) as of the close of business on the last day of such month, and the
denominator of which is the aggregate Stated Principal Balance of the Mortgage
Loans as of the close of business on the last day of such month.


                                       11
<PAGE>


         DELINQUENT HELOC MORTGAGE LOAN AND DELINQUENT: A HELOC Mortgage Loan is
Delinquent or is a Delinquent HELOC Mortgage Loan if the Monthly Payment due
thereon is not received by the close of business on the day the related Monthly
Payment is scheduled to be made in accordance with the related Mortgage Note and
until such delinquency is subsequently cured.

         DEPOSITOR: American Home Mortgage Securities LLC., a Delaware
corporation, or its successor in interest.

         DEPOSITORY OR DEPOSITORY AGENCY: The Depository Trust Company or a
successor appointed by the Indenture Trustee. Any successor to the Depository
shall be an organization registered as a "clearing agency" pursuant to Section
17A of the Exchange Act and the regulations of the Securities and Exchange
Commission thereunder.

         DEPOSITORY AGREEMENT: With respect to the Class of Book-Entry Notes,
the agreement among the Issuer, the Indenture Trustee and the initial
Depository, dated as of the Closing Date.

         DEPOSITORY PARTICIPANT: A Person for whom, from time to time, the
Depository effects book-entry transfers and pledges of securities deposited with
the Depository.

         DERIVATIVE CONTRACTS: Any of the Cap Contracts, Corridor Contracts or
Swap Agreements.

         DERIVATIVE CONTRACT COUNTERPARTY: The Cap Contract Counterparty,
Corridor Contract Counterparty or Swap Agreement Counterparty

         DETERMINATION DATE: With respect to any Payment Date, the 15th of the
related month, or if the 15th day of such month is not a Business Day, the
immediately preceding Business Day.

         DRAW: With respect to any HELOC Mortgage Loan, an additional borrowing
by the related Mortgagor subsequent to the Cut-off Date in accordance with the
related Mortgage Note.

         DRAW PERIOD: With respect to any HELOC Mortgage Loan, the period during
which the related Mortgagor is permitted to make Draws.

         DUE DATE: With respect to each Mortgage Loan that is not a HELOC
Mortgage Loan, the date in each month on which its Monthly Payment is due,
exclusive of any days of grace, if such Due Date is the first day of a month and
otherwise is deemed to be the first day of the following month or such other
date specified in the RMBS Servicing Agreement. With respect to each HELOC
Mortgage Loan, the twentieth (20th) day of a month.

         DUE PERIOD: With respect to any Payment Date and the Mortgage Loans
which are not HELOC Mortgage Loans, the period commencing on the second day of
the month immediately preceding the month of such Payment Date (or, with respect
to the first Due Period, the day following the Cut-off Date) and ending on the
first day of the month of such Payment Date. With respect to any Payment Date
and the HELOC Mortgage Loans, the period commencing on the first day of the
month immediately preceding the month of such Payment Date and ending on the
last day of such month.


                                       12
<PAGE>


         ELIGIBLE ACCOUNT: An account that is any of the following: (i) a
segregated account maintained with a federal or state chartered depository
institution (A) the short-term obligations of which are rated A-1+ or better by
Standard & Poor's and P-1 by Moody's at the time of any deposit therein or (B)
fully insured to the limits established by the FDIC, PROVIDED that any deposits
not so insured shall, to the extent acceptable to the Rating Agencies, as
evidenced in writing, be maintained such that (as evidenced by an Opinion of
Counsel delivered to the Indenture Trustee and the Rating Agencies) the
Indenture Trustee has a claim with respect to the funds in such account or a
perfected first security interest against any collateral (which shall be limited
to Eligible Investments) securing such funds that is superior to claims of any
other depositors or creditors of the depository institution with which such
account is maintained, (ii) a segregated trust account or accounts maintained
with a federal or state chartered depository institution or trust company
subject to regulations regarding fiduciary funds on deposit similar to Title 12
of the Code of Federal Regulations Section 9.10(b), which, in either case, has
corporate trust powers, acting in its fiduciary capacity, or (iii) in the case
of the Collection Account or Servicing Account, either (A) a trust account or
accounts maintained at the corporate trust department of the Indenture Trustee
or (B) an account or accounts maintained at the corporate trust department of
the HELOC Master Servicer or RMBS Master Servicer, as applicable (or an
affiliate thereof), as long as their short term debt obligations are rated F-1
by Fitch Ratings, P-1 by Moody's and A-1 by Standard & Poor's or better and
their long term debt obligations are rated A by Fitch Ratings, A2 by Moody's and
A by Standard & Poor's or better, or (iv) an account or accounts of a depository
institution acceptable to the Rating Agencies as evidenced in writing by the
Rating Agencies that use of any such account as the Collection Account or the
Payment Account will not reduce the rating assigned to any of the Securities by
such Rating Agency below investment grade.

         ELIGIBLE INVESTMENTS: One or more of the following:

                  (i)      obligations of or guaranteed as to principal and
         interest by the United States or any agency or instrumentality thereof
         when such obligations are backed by the full faith and credit of the
         United States;

                  (ii)     repurchase agreements on obligations specified in
         clause (i) maturing not more than one month from the date of
         acquisition thereof, provided that the unsecured obligations of the
         party agreeing to repurchase such obligations are at the time rated by
         the Rating Agencies in their respective highest short-term rating
         available;

                  (iii)    federal funds, certificates of deposit, demand
         deposits, time deposits and bankers' acceptances (which shall each have
         an original maturity of not more than 90 days and, in the case of
         bankers' acceptances, shall in no event have an original maturity of
         more than 365 days or a remaining maturity of more than 30 days)
         denominated in United States dollars of any U.S. depository institution
         or trust company incorporated under the laws of the United States or
         any state thereof or of any domestic branch of a foreign depository
         institution or trust company; provided that the debt obligations of
         such depository institution or trust company (or, if the only Rating
         Agency is Standard & Poor's, in the case of the principal depository
         institution in a depository institution holding company, debt
         obligations of the depository institution holding company) at the date
         of acquisition thereof have been rated by the Rating Agencies in


                                       13
<PAGE>


         their respective highest short-term rating available; and provided
         further that, if the only Rating Agency is Standard & Poor's and if the
         depository or trust company is a principal subsidiary of a bank holding
         company and the debt obligations of such subsidiary are not separately
         rated, the applicable rating shall be that of the bank holding company;
         and, provided further that, if the original maturity of such short-term
         obligations of a domestic branch of a foreign depository institution or
         trust company shall exceed 30 days, the short-term rating of such
         institution shall be A-1+ in the case of Standard & Poor's if Standard
         & Poor's is the Rating Agency;

                  (iv)     commercial paper (having original maturities of not
         more than 365 days) of any corporation incorporated under the laws of
         the United States or any state thereof which on the date of acquisition
         has been rated by Moody's and Standard & Poor's in their highest
         short-term ratings available; provided that such commercial paper shall
         have a remaining maturity of not more than 30 days;

                  (v)      a money market fund or a qualified investment fund
         rated by Moody's in its highest long-term ratings available and rated
         AAAm or AAAm-G by Standard & Poor's, including any such funds for which
         The Bank of New York (or any successor Indenture Trustee) or any
         affiliate thereof serves as an investment advisor, manager,
         administrator, shareholder, servicing agent, and/or custodian or
         sub-custodian; and

                  (vi)     other obligations or securities that are acceptable
         to each Rating Agency as a Permitted Investment hereunder and will not
         reduce the rating assigned to any Class of Notes by such Rating Agency
         below the lower of the then-current rating or the rating assigned to
         such Notes as of the Closing Date by such Rating Agency, as evidenced
         in writing; and

                  (vii)    any investment approved in writing by each of the
         Rating Agencies.

The Indenture Trustee may purchase from or sell to itself or an affiliate, as
principal or agent, the Eligible Investments listed above.

PROVIDED, HOWEVER, that no instrument shall be an Eligible Investment if it
represents, either (1) the right to receive only interest payments with respect
to the underlying debt instrument or (2) the right to receive both principal and
interest payments derived from obligations underlying such instrument and the
principal and interest payments with respect to such instrument provide a yield
to maturity greater than 120% of the yield to maturity at par of such underlying
obligations.

         ELIGIBLE 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 an Officer's Certificate delivered to the Indenture Trustee, (i)
have an outstanding principal balance, after deduction of the principal portion
of the monthly payment due in the month of substitution (or in the case of a
substitution of more than one Mortgage Loan for a Deleted Mortgage Loan, an
aggregate outstanding principal balance, after such deduction), not in excess of
the


                                       14
<PAGE>


outstanding principal balance of the Deleted Mortgage Loan (the amount of any
shortfall to be deposited by the Seller in the related Collection Account in the
month of substitution); (ii) comply with each non-statistical representation and
warranty set forth in Section 3.1(b) of the Mortgage Loan Purchase Agreement as
of the date of substitution; (iii) have a Mortgage Rate no lower than and not
more than 1% per annum higher than the Mortgage Rate of the Deleted Mortgage
Loan as of the date of substitution; (iv) have a Loan-to-Value Ratio, or
Combined-Loan-to-Value Ratio in the case of a HELOC Mortgage Loan, at the time
of substitution no higher than that of the Deleted Mortgage Loan at the time of
substitution; (v) have a remaining term to stated maturity not greater than (and
not more than one year less than) that of the Deleted Mortgage Loan; (vi) not be
30 days or more delinquent; (vii) be an adjustable-rate first lien Mortgage
Loan, if being substituted for an ARM Loan; (viii) be a fixed-rate first lien
Mortgage Loan, if being substituted for a Fixed Rate Loan; (ix) in the case of a
HELOC Mortgage Loan, have a Maximum Mortgage Rate based on the Index, determined
in accordance with then current underwriting standards; (x) in the case of a
HELOC Mortgage Loan, have a Margin that is not less than the Margin of the
Deleted Mortgage Loan and not more than 1% higher than the Margin for the
Deleted Mortgage Loan and (xi) in the case of a HELOC Mortgage Loan, have a
Mortgage of the same or higher level of priority as the Mortgage relating to the
Deleted Mortgage Loan as of the date of substitution.

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

         EVENT OF DEFAULT: Any one of the following: (a) the failure by the
Issuer to pay Accrued Note Interest on any Class of Notes, other than the Class
N Notes, with respect to a Payment Date on such Payment Date; (b) a default by
the Issuer in the observance of certain negative covenants in the Indenture; (c)
a default by the Issuer in the observance of any other covenant of the
Indenture, and the continuation of any such default for a period of thirty days
after notice to the Issuer by the Indenture Trustee or by the Holders of at
least 25% of the aggregate Note Principal Balance of the Notes, as applicable;
(d) any representation or warranty made by the Issuer in the Indenture or in any
Note or other writing delivered pursuant thereto having been incorrect in a
material respect as of the time made, and the circumstance in respect of which
such representation or warranty is incorrect not having been cured within thirty
days after notice thereof is given to the Issuer by the Indenture Trustee or by
the Holders of at least 25% of the aggregate Note Principal Balance of the
Notes, as applicable; (e) certain events of bankruptcy, insolvency, receivership
or reorganization of the Issuer; or (f) the failure by the Issuer on the final
scheduled Payment Date to pay all Accrued Note Interest, all remaining Basis
Risk Shortfall Carry-Forward Amounts and to reduce the Note Principal Balances
of all of the Notes to zero..

         EVENT OF MASTER SERVICER TERMINATION: With respect to the HELOC
Servicing Agreement and RMBS Servicing Agreement, a Servicing Default as defined
in Section 6.01 of the HELOC Servicing Agreement and RMBS Servicing Agreement,
as applicable.

         EXCESS OVERCOLLATERALIZATION AMOUNT: For any Payment Date and Loan
Group VII, the amount by which the related Overcollateralized Amount, assuming
the full Investor Principal Distribution Amount was paid on the Class VII-A
Notes for such Payment Date, exceeds the related Overcollateralization Target
Amount; provided, however, that following the occurrence of a Rapid Amortization
Event the Excess Overcollateralization Amount shall be zero.


                                       15
<PAGE>


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

         EXPENSES: The meaning specified in Section 7.02 of the Trust Agreement.

         FANNIE MAE: Fannie Mae (formerly, the Federal National Mortgage
Association), or any successor thereto.

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

         FINAL CERTIFICATION: The final certification delivered by the Custodian
pursuant to Section 2.03(b) of the Custodial Agreement and in the form attached
as Exhibit Two thereto.

         FINAL SCHEDULED PAYMENT DATE: With respect to each Class of Notes,
other than the Class VII-A Notes, the Payment Date in February 2045. With
respect to the Class VII-A Notes, the Trust shall terminate upon notice to the
Indenture Trustee of the later of (A) payment in full of all amounts owing on
the Class VII-A Notes and to the Insurer unless the Insurer shall otherwise
consent and (B) the earliest of (i) the final payment or other liquidation of
the last HELOC remaining in the Trust; (ii) the optional purchase by the
Servicer or by the Insurer of the HELOC Mortgage Loans as described below and
(iii) the Payment Date in September 2030.

         FIXED RATE LOANS: At any time, collectively, all the Mortgage Loans,
excluding HELOC Mortgage Loans, which have fixed Mortgage Rates.

         FIXED HELOC MORTGAGE LOAN RATE BALANCES: The aggregate Stated Principal
Balance of all Fixed Teaser Rate Balances and Locked Balances.

         FIXED TEASER RATE BALANCE: The Stated Principal Balance of any HELOC
Mortgage Loan with respect to which the Fixed Teaser Rate is in effect.

         FIXED TEASER RATE: With respect to any HELOC Mortgage Loan that permits
the Mortgagor to pay an initial fixed rate of interest on such HELOC Mortgage
Loan for three to five months prior to such HELOC Mortgage Loan converting to a
variable rate of interest, the fixed interest rate in effect for such three to
five month period.

         FLOATING ALLOCATION PERCENTAGE: For any Payment Date, the percentage
equivalent of a fraction with a numerator of the Invested Amount at the end of
the previous Due Period (in the case of the first Payment Date, the Invested
Amount as of the Closing Date) and a denominator equal to the sum of (i) the
Group VII Pool Balance and (ii) the Group VII Pre-Funded Amount, in each case at
the end of the previous Due Period (in the case of the first Payment Date, the
Group VII Cut-off Date Balance).

         FORECLOSURE PROFIT: With respect to a Liquidated Mortgage Loan that is
not a HELOC Mortgage Loan, the amount, if any, by which (i) the aggregate of its
Net Liquidation Proceeds exceeds (ii) the related Stated Principal Balance (plus
accrued and unpaid interest thereon at the applicable Mortgage Rate from the
date interest was last paid through the date of receipt of the final Liquidation
Proceeds) of such Liquidated Mortgage Loan immediately prior to the final
recovery of its Liquidation Proceeds. With respect to a Liquidated Mortgage Loan
that is a


                                       16
<PAGE>


HELOC Mortgage Loan, the amount, if any, by which (i) the related aggregate Net
Recoveries exceed (ii) the related Stated Principal Balance (without giving
effect to any reduction thereto in respect of any prior Charge-Off Amounts)
immediately prior to receipt of the final Recoveries plus accrued and unpaid
interest thereon at the applicable Mortgage Rate from the date interest was last
paid through the date of receipt of the final Recoveries.

         FREDDIE MAC: Freddie Mac (also known as the Federal Home Loan Mortgage
Corporation), or any successor thereto.

         FUNDING PERIOD: With respect to the Group I Loans, the period from the
Closing Date until the earlier of (i) the date on which the amount on deposit in
the Group I Pre-Funding Account is reduced to less than $50,000, (ii) a servicer
default or (iii) January 31, 2005. With respect to the Group II Loans, the
period from the Closing Date until the earlier of (i) the date on which the
amount on deposit in the Group II Pre-Funding Account is reduced to less than
$50,000, (ii) a servicer default or (iii) January 31, 2005. With respect to the
Group III Loans, the period from the Closing Date until the earlier of (i) the
date on which the amount on deposit in the Group III Pre-Funding Account is
reduced to less than $50,000, (ii) a servicer default or (iii) January 31, 2005.
With respect to the Group IV Loans, the period from the Closing Date until the
earlier of (i) the date on which the amount on deposit in the Group IV
Pre-Funding Account is reduced to less than $50,000, (ii) a servicer default or
(iii) January 31, 2005. With respect to the Group V Loans, the period from the
Closing Date until the earlier of (i) the date on which the amount on deposit in
the Group V Pre-Funding Account is reduced to less than $50,000, (ii) a servicer
default or (iii) January 31, 2005. With respect to the Group VI Loans, the
period from the Closing Date until the earlier of (i) the date on which the
amount on deposit in the Group VI Pre-Funding Account is reduced to less than
$50,000, (ii) a servicer default or (iii) January 31, 2005. With respect to the
Group VII HELOC Mortgage Loans, the period from the Closing Date until the
earlier of (i) the date on which the amount on deposit in the Group VII
Pre-Funding Account is reduced to less than $50,000, (ii) a Servicing Default or
(iii) January 31, 2005.

         GRANT: Pledge, bargain, sell, warrant, alienate, remise, release,
convey, assign, transfer, create, and grant a lien upon and a security interest
in and right of set-off against, deposit, set over and confirm pursuant to the
Indenture. A Grant of the Collateral or of any other agreement or instrument
shall include all rights, powers and options (but none of the obligations) of
the granting party thereunder, including the immediate and continuing right to
claim for, collect, receive and give receipt for principal and interest payments
in respect of such collateral or other agreement or instrument and all other
moneys payable thereunder, to give and receive notices and other communications,
to make waivers or other agreements, to exercise all rights and options, to
bring proceedings in the name of the granting party or otherwise, and generally
to do and receive anything that the granting party is or may be entitled to do
or receive thereunder or with respect thereto.

         GROSS MARGIN: With respect to any ARM Loan, the percentage set forth as
the "Gross Margin" for such Mortgage Loan on the Mortgage Loan Schedule, as
adjusted from time to time in accordance with the terms of the RMBS Servicing
Agreement.

         GROUP I AVAILABLE FUNDS: For any Payment Date, an amount equal to the
amount received by the Indenture Trustee and available in the Payment Account on
that Payment Date in respect


                                       17
<PAGE>


of the Group I Loans. The Group I Available Funds generally includes: (1) all
previously undistributed payments on account of principal (including the
principal portion of Monthly Payments, Principal Prepayments and the principal
amount of Net Liquidation Proceeds) and all previously undistributed payments on
account of interest received after the Cut-Off Date and on or prior to the
related Determination Date from the Group I Loans and (2) any Monthly Advances
and Compensating Interest Payments on the Group I Loans made by the Master
Servicer for such Payment Date and (3) any amounts reimbursed by the Master
Servicer or the Indenture Trustee in connection with losses on certain eligible
investments in the Master Servicer Collection Account or the Payment Account,
(4) amounts transferred from the Group I Interest Coverage Account and, at the
end of the Funding Period, any excess amounts transferred from the Group I
Pre-Funding Account, and (5) interest earned on amounts on deposit in the Group
I Pre-Funding Account, and is net of (6) fees payable to, and other amounts
reimbursable to, the Master Servicer, the Indenture Trustee and the Owner
Trustee and other amounts as provided in the Agreements allocable to the Group I
Loans.

         GROUP I CUT-OFF DATE BALANCE: The sum of (x) the aggregate Stated
Principal Balance of the Group I Loans as of the Cut-off Date and (y) the Group
I Original Pre-Funded Amount.

         GROUP I INTEREST COVERAGE ACCOUNT: A trust account that the Indenture
Trustee will establish pursuant to Section 3.30 of the Indenture for the benefit
of the Class I-A Notes and Class M Notes. The amount to be deposited in the
Group I Interest Coverage Account on the Closing date will be $69,103.16

         GROUP I LOAN: A Mortgage Loan in Loan Group I.

         GROUP I ORIGINAL PRE-FUNDED AMOUNT: The amount deposited in the Group I
Pre-Funding Account on the Closing Date by the Depositor, which will be
$47,620,587.62.

         GROUP I PRE-FUNDED AMOUNT: The amount on deposit in the Group I
Pre-Funding Account on any date of determination.

         GROUP I PRE-FUNDING ACCOUNT: An account established by the Indenture
Trustee for the benefit of the Class I-A Notes and Class M Notes and funded on
the Closing Date by the Depositor with the Group I Original Pre-Funded Amount.

         GROUP I SUBSEQUENT MORTGAGE LOAN: A Mortgage Loan sold by the Depositor
to the Trust Estate pursuant to Section 2.05 of the Indenture, such Mortgage
Loan being identified on the related Mortgage Loan Schedule attached to the
Group I Subsequent Transfer Instrument.

         GROUP I SUBSEQUENT MORTGAGE LOAN PURCHASE AGREEMENT: The Subsequent
Mortgage Loan Purchase Agreement, dated as of the applicable Subsequent Transfer
Date, between the Seller, as seller, and the Purchaser, as purchaser, relating
to the sale, transfer and assignment of the Group I Subsequent Mortgage Loans.

         GROUP I SUBSEQUENT TRANSFER INSTRUMENT: With respect to the Group I
Subsequent Mortgage Loans, the subsequent transfer instrument, dated as of the
applicable Subsequent Transfer Date, between American Home Mortgage Securities,
LLC., as depositor, and The Bank of New York, as indenture trustee.


                                       18
<PAGE>


         GROUP II 3/1 HYBRID LOAN: Any Group II Loan with an initial fixed rate
period of 3 years, followed by an adjustable rate period, as indicated in the
Mortgage Loan Schedule.

         GROUP II AVAILABLE FUNDS: For any Payment Date, an amount equal to the
amount received by the Indenture Trustee and available in the Payment Account on
that Payment Date in respect of the Group II Loans. The Group II Available Funds
generally includes: (1) all previously undistributed payments on account of
principal (including the principal portion of Monthly Payments, Principal
Prepayments and the principal amount of Net Liquidation Proceeds) and all
previously undistributed payments on account of interest received after the
Cut-Off Date and on or prior to the related Determination Date from the Group II
Loans and (2) any Monthly Advances and Compensating Interest Payments on the
Group II Loans made by the Master Servicer for such Payment Date and (3) any
amounts reimbursed by the Master Servicer or the Indenture Trustee in connection
with losses on certain eligible investments in the Master Servicer Collection
Account or the Payment Account, (4) amounts transferred from the Group II
Interest Coverage Account and, at the end of the Funding Period, any excess
amounts transferred from the Group II Pre-Funding Account, and (5) interest
earned on amounts on deposit in the Group II Pre-Funding Account, and is net of
(6) fees payable to, and other amounts reimbursable to, the Master Servicer, the
Indenture Trustee and the Owner Trustee and other amounts as provided in the
Agreements allocable to the Group II Loans.

         GROUP II CUT-OFF DATE BALANCE: The sum of (x) the aggregate Stated
Principal Balance of the Group II Loans as of the Cut-off Date and (y) the Group
II Original Pre-Funded Amount.

         GROUP II INTEREST COVERAGE ACCOUNT: A trust account that the Indenture
Trustee will establish pursuant to Section 3.30 of the Indenture for the benefit
of the Class I-A Notes and Class M Notes. The amount to be deposited in the
Group II Interest Coverage Account on the Closing date will be $440,121.08.

         GROUP II LOAN: A Mortgage Loan in Loan Group I.

         GROUP II NET SWAP AGREEMENT PAYMENT AMOUNT: With respect to any Payment
Date, the amount equal to the excess, if any, of (a) the aggregate amount
payable on that Payment Date to the Trust from the Swap Agreement Counterparty
pursuant to the Group II Swap Agreement, over (b) the aggregate amount payable
on that Payment Date to the Swap Agreement Counterparty under the Group II Swap
Agreement.

         GROUP II PRE-FUNDED ACCOUNT 3/1 BALANCE: $36,397,299.67, reduced by any
amounts from the Group II Pre-Funded Account used to purchase Group II 3/1
Hybrid Loans

         GROUP II ORIGINAL PRE-FUNDED AMOUNT: The amount deposited in the Group
II Pre-Funding Account on the Closing Date by the Depositor, which will be
$90,372,640.20.

         GROUP II PRE-FUNDED AMOUNT: The amount on deposit in the Group II
Pre-Funding Account on any date of determination.


                                       19
<PAGE>


         GROUP II PRE-FUNDING ACCOUNT: An account established by the Indenture
Trustee for the benefit of the Class I-A Notes and Class M Notes and funded on
the Closing Date by the Depositor with the Group II Original Pre-Funded Amount.

         GROUP II SEQUENTIAL TRIGGER EVENT: A Group II Sequential Trigger Event
is in effect on any Payment Date if, before the 37th Payment Date, the aggregate
amount of Realized Losses on the Group II Loans incurred since the Cut-off Date
through the last day of the related Prepayment Period divided by the aggregate
Stated Principal Balance of the Group II Loans as of the Cut-off Date exceeds
1.75% or if, on or after the 37th Payment Date, a Trigger Event is in effect
with respect to the Group I, Group II, Group III, Group IV and Group V Loans.

         GROUP II SUBSEQUENT MORTGAGE LOAN: A Mortgage Loan sold by the
Depositor to the Trust Estate pursuant to Section 2.06 of the Indenture, such
Mortgage Loan being identified on the related Mortgage Loan Schedule attached to
the Group II Subsequent Transfer Instrument. The aggregate amount of Subsequent
Mortgage Loans for this Loan Group is not less than the initial Group II
Pre-Funded Account 3/1 Balance.

         GROUP II SUBSEQUENT MORTGAGE LOAN PURCHASE AGREEMENT: The Subsequent
Mortgage Loan Purchase Agreement, dated as of the applicable Subsequent Transfer
Date, between the Seller, as seller, and the Purchaser, as purchaser, relating
to the sale, transfer and assignment of the Group II Subsequent Mortgage Loans.

         GROUP II SUBSEQUENT TRANSFER INSTRUMENT: With respect to the Group II
Subsequent Mortgage Loans, the subsequent transfer instrument, dated as of the
applicable Subsequent Transfer Date, between American Home Mortgage Securities,
LLC., as depositor, and The Bank of New York, as indenture trustee.

         GROUP II SWAP AGREEMENT: The Confirmation together with the associated
ISDA Master Agreement with respect to the Swap Agreement between the Indenture
Trustee and the Swap Agreement Counterparty for the benefit of the Class II-A
Notes, a form of which is set forth in Exhibit E of the Indenture.

         GROUP III 3/1 HYBRID LOAN: Any Group III Loan with an initial fixed
rate period of 3 years, followed by an adjustable rate period, as indicated in
the Mortgage Loan Schedule.

         GROUP III AVAILABLE FUNDS: For any Payment Date, an amount equal to the
amount received by the Indenture Trustee and available in the Payment Account on
that Payment Date in respect of the Group III Loans. The Group III Available
Funds generally includes: (1) all previously undistributed payments on account
of principal (including the principal portion of Monthly Payments, Principal
Prepayments and the principal amount of Net Liquidation Proceeds) and all
previously undistributed payments on account of interest received after the
Cut-Off Date and on or prior to the related Determination Date from the Group
III Loans and (2) any Monthly Advances and Compensating Interest Payments on the
Group III Loans made by the Master Servicer for such Payment Date and (3) any
amounts reimbursed by the Master Servicer or the Indenture Trustee in connection
with losses on certain eligible investments in the Master Servicer Collection
Account or the Payment Account, (4) amounts transferred from the Group III
Interest Coverage Account and, at the end of the Funding Period, any excess
amounts


                                       20
<PAGE>


transferred from the Group III Pre-Funding Account, and (5) interest earned on
amounts on deposit in the Group III Pre-Funding Account, and is net of (6) fees
payable to, and other amounts reimbursable to, the Master Servicer, the
Indenture Trustee and the Owner Trustee and other amounts as provided in the
Agreements allocable to the Group III Loans.

         GROUP III CUT-OFF DATE BALANCE: The sum of (x) the aggregate Stated
Principal Balance of the Group III Loans as of the Cut-off Date and (y) the
Group III Original Pre-Funded Amount.

         GROUP III INTEREST COVERAGE ACCOUNT: A trust account that the Indenture
Trustee will establish pursuant to Section 3.30 of the Indenture for the benefit
of the Class I-A Notes and Class M Notes. The amount to be deposited in the
Group III Interest Coverage Account on the Closing date will be $441,097.90.

         GROUP III LOAN: A Mortgage Loan in Loan Group I.

         GROUP III NET SWAP AGREEMENT PAYMENT AMOUNT: With respect to any
Payment Date, the amount equal to the excess, if any, of (a) the aggregate
amount payable on that Payment Date to the Trust from the Swap Agreement
Counterparty pursuant to the Group III Swap Agreement, over (b) the aggregate
amount payable on that Payment Date to the Swap Agreement Counterparty under the
Group III Swap Agreement.

         GROUP III PRE-FUNDED ACCOUNT 3/1 BALANCE: $28,002,962.89, reduced by
any amounts from the Group III Pre-Funded Account used to purchase Group III 3/1
Hybrid Loans

         GROUP III ORIGINAL PRE-FUNDED AMOUNT: The amount deposited in the Group
III Pre-Funding Account on the Closing Date by the Depositor, which will be
$96,474,588.97.

         GROUP III PRE-FUNDED AMOUNT: The amount on deposit
in the Group III Pre-Funding Account on any date of
determination.

         GROUP III PRE-FUNDING ACCOUNT: An account established by the Indenture
Trustee for the benefit of the Class I-A Notes and Class M Notes and funded on
the Closing Date by the Depositor with the Group III Original Pre-Funded Amount.

         GROUP III SUBSEQUENT MORTGAGE LOAN: A Mortgage Loan sold by the
Depositor to the Trust Estate pursuant to Section 2.07 of the Indenture, such
Mortgage Loan being identified on the related Mortgage Loan Schedule attached to
the Group III Subsequent Transfer Instrument. The aggregate amount of Subsequent
Mortgage Loans for this Loan Group is not less than the initial Group III
Pre-Funded Account 3/1 Balance.

         GROUP III SUBSEQUENT MORTGAGE LOAN PURCHASE AGREEMENT: The Subsequent
Mortgage Loan Purchase Agreement, dated as of the applicable Subsequent Transfer
Date, between the Seller, as seller, and the Purchaser, as purchaser, relating
to the sale, transfer and assignment of the Group III Subsequent Mortgage Loans.

         GROUP III SUBSEQUENT TRANSFER INSTRUMENT: With respect to the Group III
Subsequent Mortgage Loans, the subsequent transfer instrument, dated as of the
applicable Subsequent


                                       21
<PAGE>


Transfer Date, between American Home Mortgage Securities, LLC., as depositor,
and The Bank of New York, as indenture trustee.

         GROUP III SWAP AGREEMENT: The Confirmation together with the associated
ISDA Master Agreement with respect to the Swap Agreement between the Indenture
Trustee and the Swap Agreement Counterparty for the benefit of the Class III-A
Notes, a form of which is set forth in Exhibit E of the Indenture.

         GROUP IV AVAILABLE FUNDS: For any Payment Date, an amount equal to the
amount received by the Indenture Trustee and available in the Payment Account on
that Payment Date in respect of the Group IV Loans. The Group IV Available Funds
generally includes: (1) all previously undistributed payments on account of
principal (including the principal portion of Monthly Payments, Principal
Prepayments and the principal amount of Net Liquidation Proceeds) and all
previously undistributed payments on account of interest received after the
Cut-Off Date and on or prior to the related Determination Date from the Group IV
Loans and (2) any Monthly Advances and Compensating Interest Payments on the
Group IV Loans made by the Master Servicer for such Payment Date and (3) any
amounts reimbursed by the Master Servicer or the Indenture Trustee in connection
with losses on certain eligible investments in the Master Servicer Collection
Account or the Payment Account, (4) amounts transferred from the Group IV
Interest Coverage Account and, at the end of the Funding Period, any excess
amounts transferred from the Group IV Pre-Funding Account, and (5) interest
earned on amounts on deposit in the Group IV Pre-Funding Account, and is net of
(6) fees payable to, and other amounts reimbursable to, the Master Servicer, the
Indenture Trustee and the Owner Trustee and other amounts as provided in the
Agreements allocable to the Group IV Loans.

         GROUP IV CUT-OFF DATE BALANCE: The sum of (x) the aggregate Stated
Principal Balance of the Group IV Loans as of the Cut-off Date and (y) the Group
IV Original Pre-Funded Amount.

         GROUP IV INTEREST COVERAGE ACCOUNT: A trust account that the Indenture
Trustee will establish pursuant to Section 3.30 of the Indenture for the benefit
of the Class I-A Notes and Class M Notes. The amount to be deposited in the
Group IV Interest Coverage Account on the Closing date will be $831,578.64.

         GROUP IV LOAN: A Mortgage Loan in Loan Group I.

         GROUP IV ORIGINAL PRE-FUNDED AMOUNT: The amount deposited in the Group
IV Pre-Funding Account on the Closing Date by the Depositor, which will be
$159,760,105.43.

         GROUP IV PRE-FUNDED AMOUNT: The amount on deposit in the Group IV
Pre-Funding Account on any date of determination.

         GROUP IV PRE-FUNDING ACCOUNT: An account established by the Indenture
Trustee for the benefit of the Class I-A Notes and Class M Notes and funded on
the Closing Date by the Depositor with the Group IV Original Pre-Funded Amount.

         GROUP IV SUBSEQUENT MORTGAGE LOAN: A Mortgage Loan sold by the
Depositor to the Trust Estate pursuant to Section 2.08 of the Indenture, such
Mortgage Loan being identified on the related Mortgage Loan Schedule attached to
the Group IV Subsequent Transfer Instrument.


                                       22
<PAGE>


         GROUP IV SUBSEQUENT MORTGAGE LOAN PURCHASE AGREEMENT: The Subsequent
Mortgage Loan Purchase Agreement, dated as of the applicable Subsequent Transfer
Date, between the Seller, as seller, and the Purchaser, as purchaser, relating
to the sale, transfer and assignment of the Group IV Subsequent Mortgage Loans.

         GROUP IV SUBSEQUENT TRANSFER INSTRUMENT: With respect to the Group IV
Subsequent Mortgage Loans, the subsequent transfer instrument, dated as of the
applicable Subsequent Transfer Date, between American Home Mortgage Securities,
LLC., as depositor, and The Bank of New York, as indenture trustee.

         GROUP V AVAILABLE FUNDS: For any Payment Date, an amount equal to the
amount received by the Indenture Trustee and available in the Payment Account on
that Payment Date in respect of the Group V Loans. The Group V Available Funds
generally includes: (1) all previously undistributed payments on account of
principal (including the principal portion of Monthly Payments, Principal
Prepayments and the principal amount of Net Liquidation Proceeds) and all
previously undistributed payments on account of interest received after the
Cut-Off Date and on or prior to the related Determination Date from the Group V
Loans and (2) any Monthly Advances and Compensating Interest Payments on the
Group V Loans made by the Master Servicer for such Payment Date and (3) any
amounts reimbursed by the Master Servicer or the Indenture Trustee in connection
with losses on certain eligible investments in the Master Servicer Collection
Account or the Payment Account, (4) amounts transferred from the Group V
Interest Coverage Account and, at the end of the Funding Period, any excess
amounts transferred from the Group V Pre-Funding Account, and (5) interest
earned on amounts on deposit in the Group V Pre-Funding Account, and is net of
(6) fees payable to, and other amounts reimbursable to, the Master Servicer, the
Indenture Trustee and the Owner Trustee and other amounts as provided in the
Agreements allocable to the Group V Loans.

         GROUP V CUT-OFF DATE BALANCE: The sum of (x) the aggregate Stated
Principal Balance of the Group V Loans as of the Cut-off Date and (y) the Group
V Original Pre-Funded Amount.

         GROUP V INTEREST COVERAGE ACCOUNT: A trust account that the Indenture
Trustee will establish pursuant to Section 3.30 of the Indenture for the benefit
of the Class I-A Notes and Class M Notes. The amount to be deposited in the
Group V Interest Coverage Account on the Closing date will be $547,831.07.

         GROUP V LOAN: A Mortgage Loan in Loan Group I.

         GROUP V ORIGINAL PRE-FUNDED AMOUNT: The amount deposited in the Group V
Pre-Funding Account on the Closing Date by the Depositor, which will be
$107,272,956.23.

         GROUP V PRE-FUNDED AMOUNT: The amount on deposit in the Group V
Pre-Funding Account on any date of determination.

         GROUP V PRE-FUNDING ACCOUNT: An account established by the Indenture
Trustee for the benefit of the Class I-A Notes and Class M Notes and funded on
the Closing Date by the Depositor with the Group V Original Pre-Funded Amount.


                                       23
<PAGE>


         GROUP V SUBSEQUENT MORTGAGE LOAN: A Mortgage Loan sold by the Depositor
to the Trust Estate pursuant to Section 2.09 of the Indenture, such Mortgage
Loan being identified on the related Mortgage Loan Schedule attached to the
Group V Subsequent Transfer Instrument.

         GROUP V SUBSEQUENT MORTGAGE LOAN PURCHASE AGREEMENT: The Subsequent
Mortgage Loan Purchase Agreement, dated as of the applicable Subsequent Transfer
Date, between the Seller, as seller, and the Purchaser, as purchaser, relating
to the sale, transfer and assignment of the Group V Subsequent Mortgage Loans.

         GROUP V SUBSEQUENT TRANSFER INSTRUMENT: With respect to the Group V
Subsequent Mortgage Loans, the subsequent transfer instrument, dated as of the
applicable Subsequent Transfer Date, between American Home Mortgage Securities,
LLC., as depositor, and The Bank of New York, as indenture trustee.

         GROUP VI AVAILABLE FUNDS: For any Payment Date, an amount equal to the
amount received by the Indenture Trustee and available in the Payment Account on
that Payment Date in respect of the Group VI Loans. The Group VI Available Funds
generally includes: (1) all previously undistributed payments on account of
principal (including the principal portion of Monthly Payments, Principal
Prepayments and the principal amount of Net Liquidation Proceeds) and all
previously undistributed payments on account of interest received after the
Cut-Off Date and on or prior to the related Determination Date from the Group VI
Loans and (2) any Monthly Advances and Compensating Interest Payments on the
Group VI Loans made by the Master Servicer for such Payment Date and (3) any
amounts reimbursed by the Master Servicer or the Indenture Trustee in connection
with losses on certain eligible investments in the Master Servicer Collection
Account or the Payment Account, (4) amounts transferred from the Group VI
Interest Coverage Account and, at the end of the Funding Period, any excess
amounts transferred from the Group VI Pre-Funding Account, and (5) interest
earned on amounts on deposit in the Group VI Pre-Funding Account, and is net of
(6) fees payable to, and other amounts reimbursable to, the Master Servicer, the
Indenture Trustee and the Owner Trustee and other amounts as provided in the
Agreements allocable to the Group VI Loans.

         GROUP VI CUT-OFF DATE BALANCE: The sum of (x) the aggregate Stated
Principal Balance of the Group VI Loans as of the Cut-off Date and (y) the Group
VI Original Pre-Funded Amount.

         GROUP VI INTEREST COVERAGE ACCOUNT: A trust account that the Indenture
Trustee will establish pursuant to Section 3.30 of the Indenture for the benefit
of the Class I-A Notes and Class M Notes. The amount to be deposited in the
Group VI Interest Coverage Account on the Closing Date will be $383,812.57.

         GROUP VI LOAN: A Mortgage Loan in Loan Group I.

         GROUP VI ORIGINAL PRE-FUNDED AMOUNT: The amount deposited in the Group
VI Pre-Funding Account on the Closing Date by the Depositor, which will be
$62,546,325.61.

         GROUP VI PRE-FUNDED AMOUNT: The amount on deposit in the Group VI
Pre-Funding Account on any date of determination.


                                       24
<PAGE>


         GROUP VI PRE-FUNDING ACCOUNT: An account established by the Indenture
Trustee for the benefit of the Class I-A Notes and Class M Notes and funded on
the Closing Date by the Depositor with the Group VI Original Pre-Funded Amount.

         GROUP VI SUBSEQUENT MORTGAGE LOAN: A Mortgage Loan sold by the
Depositor to the Trust Estate pursuant to Section 2.10 of the Indenture, such
Mortgage Loan being identified on the related Mortgage Loan Schedule attached to
the Group VI Subsequent Transfer Instrument.

         GROUP VI SUBSEQUENT MORTGAGE LOAN PURCHASE AGREEMENT: The Subsequent
Mortgage Loan Purchase Agreement, dated as of the applicable Subsequent Transfer
Date, between the Seller, as seller, and the Purchaser, as purchaser, relating
to the sale, transfer and assignment of the Group VI Subsequent Mortgage Loans.

         GROUP VI SUBSEQUENT TRANSFER INSTRUMENT: With respect to the Group VI
Subsequent Mortgage Loans, the subsequent transfer instrument, dated as of the
applicable Subsequent Transfer Date, between the Depositor and the Indenture
Trustee.

         GROUP VII CUT-OFF DATE BALANCE: The sum of (x) the aggregate Stated
Principal Balance of the Group VII HELOC Mortgage Loans as of the Cut-off Date
and (y) the Group VII Original Pre-Funded Amount.

         GROUP VII DELINQUENT HELOC AMOUNT: With respect to any Payment Date,
the aggregate Stated Principal Balance of any Group VII Loans included in the
Trust which are 180 days or more delinquent, REO, in bankruptcy or in
foreclosure.

         GROUP VII EXCESS SPREAD PERCENTAGE: With respect to any Payment Date,
the percentage equivalent of a fraction, (A) the numerator of which is the
product of (i) the excess of (x) the Investor Interest Collections on the Group
VII Loans for that Payment Date over (y) the sum of the Accrued Note Interest on
the Group VII Loans, the premium due to the Insurer under the Insurance Policy,
any Investor Charge-Off Amounts, any reimbursement amounts and other amounts
payable to the Insurer pursuant to the Insurance Agreement, and the related
servicing fee for such Payment Date and (ii) twelve (12), and (B) the
denominator of which is the aggregate Stated Principal Balance of the Group VII
Loans as of the beginning of the related Due Period.

         GROUP VII INTEREST COVERAGE ACCOUNT: A trust account that the Indenture
Trustee will establish pursuant to Section 3.31 of the Indenture for the benefit
of the Group VII Noteholders and the Insurer. The amount to be deposited in the
Group VII Interest Coverage Account on the Closing Date will be $120,309.53.

         GROUP VII ORIGINAL PRE-FUNDED AMOUNT: The amount deposited in the Group
VII Pre-Funding Account on the Closing Date by the Depositor, which will be
approximately $35,600,000.

         GROUP VII POOL BALANCE: For any Payment Date, an amount equal to the
aggregate of the Principal Balances of the HELOC Mortgage Loans at the end of
the related Due Period.

         GROUP VII PRE-FUNDED AMOUNT: The amount on deposit in the Group VII
Pre-Funding Account on any date of determination.


                                       25
<PAGE>


         GROUP VII PRE-FUNDING ACCOUNT: An account established by the Indenture
Trustee pursuant to Section 3.30 of the Indenture for the benefit of the Group
VII Noteholders and the Insurer and funded on the Closing Date by the Depositor
with the Group VII Original Pre-Funded Amount.

         GROUP VII SUBSEQUENT MORTGAGE LOAN PURCHASE AGREEMENT: The Subsequent
Mortgage Loan Purchase Agreement, dated as of the applicable Subsequent Transfer
Date, between the Seller, as seller, and the Purchaser, as purchaser, relating
to the sale, transfer and assignment of the Group VII Subsequent Mortgage Loans.

         GROUP VII SUBSEQUENT TRANSFER INSTRUMENT: With respect to the Group VII
subsequent HELOC Mortgage Loans, the subsequent transfer instrument, dated as of
the applicable Subsequent Transfer Date, between the Depositor and the Indenture
Trustee.

         GUARANTEED INTEREST PAYMENT: For any Payment Date, an amount equal to
the amount by which (a) accrued and unpaid interest for payment on the Class
VII-A Notes, excluding any Relief Act Shortfalls at the Note Interest Rate
relating to the Class VII-A Notes, exceeds (b) the amount available for interest
distributions on the Class VII-A Notes on such Payment Date.

         GUARANTEED PRINCIPAL PAYMENT AMOUNT: With respect to any Payment Date,
other than the Payment Date in September 2030, the excess, if any, by which (a)
the Note Principal Balance relating to the Class VII-A Notes (after giving
effect to all payments of principal on the Class VII-A Notes on such Payment
Date, but without giving effect to payments under the Insurance Policy to be
made on such Payment Date) exceeds (b) the Invested Amount as of the end of the
related Due Period or, with respect to the Payment Date in September 2030, the
Note Principal Balance relating to the Class VII-A Notes after giving effect to
all other distributions of principal of the Class VII-A Notes on such Payment
Date.

         HAZARDOUS MATERIALS: Any dangerous, toxic or hazardous pollutants,
chemicals, wastes, or substances, including, without limitation, those so
identified pursuant to the Comprehensive Environmental Response, Compensation
and Liability Act, 42 U.S.C. Section 9601 et seq., or any other environmental
laws now existing, and specifically including, without limitation, asbestos and
asbestos-containing materials, polychlorinated biphenyls, radon gas, petroleum
and petroleum products, urea formaldehyde and any substances classified as being
"in inventory", "usable work in progress" or similar classification which would,
if classified unusable, be included in the foregoing definition.

         HELOC BALANCE: With respect to any HELOC Mortgage Loan, the portion, if
any, of the Stated Principal Balance thereof subject to a variable Mortgage
Rate.

         HELOC MASTER SERVICER: GMAC Mortgage Corporation, a Pennsylvania
corporation, and its successors and assigns.

         HELOC MASTER SERVICER REMITTANCE DATE: The twenty-second (22nd)
calendar day of each month or, if such twenty-second (22nd) day is not a
Business Day, then the Business Day immediately preceding such twenty-second
(22nd) day of the month.


                                       26
<PAGE>


         HELOC MASTER SERVICING FEE: With respect to each HELOC Mortgage Loan
and any Payment Date, the fee payable monthly to the HELOC Master Servicer by
the Indenture Trustee pursuant to the HELOC Master Servicing Agreement, or to
the HELOC Subservicer on behalf of the HELOC Master Servicer, in respect of
master servicing compensation. For the avoidance of doubt, the HELOC Master
Servicing Fee payable to the HELOC Master Servicer, or to the HELOC Subservicer
on behalf of the HELOC Master Servicer, shall not exceed in the aggregate the
HELOC Master Servicing Fee Rate.

         HELOC MASTER SERVICING FEE RATE: With respect to any HELOC Mortgage
Loan, 0.50% per annum.

         HELOC MORTGAGE LOANS:  The Group VII Mortgage Loans.

         HELOC MORTGAGE LOAN SCHEDULE: The schedule of HELOC Mortgage Loans
attached as Exhibit A to the HELOC Servicing Agreement.

         HELOC SERVICING AGREEMENT: The Servicing Agreement dated as of December
21, 2004, among the HELOC Master Servicer, the Issuer, the Seller and the
Indenture Trustee.

         HELOC SUBSERVICER: American Home Mortgage Servicing, Inc., a Maryland
corporation, and its successors and assigns.

         HELOC SUBSERVICER REMITTANCE DATE: The twenty-second (22nd) calendar
day of each month or, if such twenty-second (22nd) day is not a Business Day,
then the Business Day immediately preceding such twenty-second (22nd) day of the
month.

         HELOC SUBSERVICING AGREEMENT: The Subservicing Agreement, dated as of
December 21, 2004, between the HELOC Master Servicer and the HELOC Subservicer.

         HELOC SUBSERVICING FEE: With respect to each HELOC Mortgage Loan and
any Payment Date, the fee payable monthly to the HELOC Subservicer by the HELOC
Master Servicer in respect of subservicing compensation that accrues at an
annual rate equal to the HELOC Subservicing Fee Rate multiplied by the Stated
Principal Balance of such HELOC Mortgage Loan as of the related Due Date in the
related Due Period.

         HELOC SUBSERVICING FEE RATE: With respect to any HELOC Mortgage Loan
0.50% per annum.

         INDEMNIFIED PARTY: The meaning specified in Section 7.02 of the Trust
Agreement.

         INDEMNIFICATION AGREEMENT: The Indemnification Agreement dated as of
December 21, 2004 among the Seller, the Issuer, AHMIC, the Depositor, Lehman
Brothers, Inc. and the Insurer, including any amendments and supplements thereto
in accordance with the terms thereof.

         INDENTURE: The indenture dated as of December 21, 2004, between the
Issuer and the Indenture Trustee, relating to the American Home Mortgage
Investment Trust 2004-4 Notes.


                                       27
<PAGE>


         INDENTURE TRUSTEE: The Bank of New York, and its successors and assigns
or any successor indenture trustee appointed pursuant to the terms of the
Indenture.

         INDENTURE TRUSTEE FEE: All investment income and earnings on the funds
from time to time in the Payment Account.

         INDEPENDENT: When used with respect to any specified Person, the Person
(i) is in fact independent of the Issuer, any other obligor on the Notes, the
Seller, the HELOC Master Servicer, the RMBS Master Servicer, the Depositor,
American Home Mortgage Investment Corp. and any Affiliate of any of the
foregoing Persons, (ii) does not have any direct financial interest or any
material indirect financial interest in the Issuer, any such other obligor, the
Seller, the HELOC Master Servicer, the RMBS Master Servicer, the Depositor,
American Home Mortgage Investment Corp. or any Affiliate of any of the foregoing
Persons and (iii) is not connected with the Issuer, any such other obligor, the
Seller, the HELOC Master Servicer, the RMBS Master Servicer, the Depositor,
American Home Mortgage Investment Corp. or any Affiliate of any of the foregoing
Persons as an officer, employee, promoter, underwriter, trustee, partner,
director or person performing similar functions.

         INDEPENDENT CERTIFICATE: A certificate or opinion to be delivered to
the Indenture Trustee under the circumstances described in, and otherwise
complying with, the applicable requirements of Section 10.01 of the Indenture,
made by an independent appraiser or other expert appointed by an Issuer Request
and approved by the Indenture Trustee in the exercise of reasonable care, and
such opinion or certificate shall state that the signer has read the definition
of "Independent" in this Indenture and that the signer is Independent within the
meaning thereof.

         INDEX: With respect to any Mortgage Loan that is not a HELOC Mortgage
Loan, the index for the adjustment of the Mortgage Rate set forth as such in the
related Mortgage Note. With respect to any HELOC Mortgage Loan and any
Adjustment Date (other than any Locked Balance, except for purposes of
calculating the Recalculated Weighted Average Margin), the highest "prime rate"
most recently published in the Wall Street Journal. If the "prime rate" is no
longer published, then the Index will be a comparable independent index selected
by the Seller. For any Locked Balance, the Index shall equal such "prime rate"
as of the date of that would have been the most recent Adjustment Date for such
Locked Balance had it remained a HELOC Balance.

         INITIAL NOTE PRINCIPAL BALANCE: With respect to the Class I-A-1 Notes,
$204,824,500. With respect to the Class I-A-2 Notes, $36,145,500. With respect
to the Class II-A-1 Notes, $497,673,900. With respect to the Class II-A-2 Notes,
$55,297,100.With respect to the Class III-A Notes, $521,774,000. With respect to
the Class IV-A Notes, $842,617,000. With respect to the Class V-A Notes,
$550,442,000. With respect to the Class VI-A-1 Notes, $281,677,000. With respect
to the Class VI-A-2 Notes, $15,000,000. With respect to the Class VII-A Notes,
$221,112,000. With respect to the Class M-1 Notes, $96,118,000. With respect to
the Class M-2 Notes, $71,360,000. With respect to the Class M-3 Notes,
$26,214,000. With respect to the Class VI-M-1 Notes, $39,099,000. With respect
to the Class VI-M-2 Notes, $14,146,000. With respect to the Class VI-M-3 Notes,
$9,824,000. With respect to the Class VI-B-1 Notes, $9,824,000. With respect to
the Class VI-B-2 Notes, $9,234,000. With respect to the Class VI-B-3 Notes,
$8,252,000. With respect to the Class N Notes, $21,200,000.


                                       28
<PAGE>


         INITIAL CERTIFICATION: The initial certification delivered by the
Custodian pursuant to Section 2.03(a) of the Custodial Agreement and in the form
attached thereto as Exhibit One thereto.

         INSURANCE AGREEMENT: The Insurance Agreement dated as of December 21,
2004 among the Indenture Trustee, the Seller, the Issuer, AHMIC, the HELOC
Subservicer, the Depositor, the Owner Trustee and the Insurer, including any
amendments and supplements thereto in accordance with the terms thereof.

         INSURANCE POLICY: The note guaranty insurance policy (No. 45527) with
respect to the Class VII-A Notes and all endorsements thereto, if any, dated the
Closing Date, issued by the Insurer for the benefit of the Holders of the Class
VII-A Notes, a copy of which is attached as Exhibit F to the Indenture.

         INSURANCE PROCEEDS: Proceeds paid by any insurer pursuant to any
insurance policy covering a Mortgage Loan which are required to be remitted to
the HELOC Master Servicer, the HELOC Subservicer or the RMBS Master Servicer, as
applicable, net of any component thereof, released to the Mortgagor in
accordance with the HELOC Master Servicer's, the HELOC Subservicer's or the RMBS
Master Servicer's normal servicing procedures, as applicable.

         INSURED PAYMENT: With respect to the Class VII-A Notes, (a) as of any
Payment Date, any Deficiency Amount and (b) any Preference Amount.

         INSURER: MBIA Insurance Corporation, a corporation organized and
created under the laws of the State of New York, or any successor thereto.

         INSURER DEFAULT: The existence and continuance of any of the following:
(a) a failure by the Insurer to make a payment required under the Insurance
Policy in accordance with its terms; or (b)(i) the Insurer (A) files any
petition or commences any case or proceeding under any provision or chapter of
the Bankruptcy Code or any other similar federal or state law relating to
insolvency, bankruptcy, rehabilitation, liquidation or reorganization, (B) makes
a general assignment for the benefit of its creditors, or (C) has an order for
relief entered against it under the Bankruptcy Code or any other similar federal
or state law relating to insolvency, bankruptcy, rehabilitation, liquidation or
reorganization which is final and nonappealable; or (ii) a court of competent
jurisdiction, the New York Department of Insurance or other competent regulatory
authority enters a final and nonappealable order, judgment or decree (A)
appointing a custodian, trustee, agent or receiver for the Insurer or for all or
any material portion of its property or (B) authorizing the taking of possession
by a custodian, trustee, agent or receiver of the Insurer (or the taking of
possession of all or any material portion of the property of the Insurer).

         INTEREST COLLECTIONS: For each Payment Date, are amounts collected
during the related Due Period on the HELOC Mortgage Loans and allocated to
interest in accordance with the terms of the related Credit Line Agreements,
together with the interest portion of any Repurchase Price and substitution
adjustment amount paid during the related Due Period and any Net Recoveries on
HELOC Mortgage Loans that were previously Charged-Off HELOC Mortgage Loans.


                                       29
<PAGE>


         INTEREST DETERMINATION DATE: With respect each class of LIBOR Notes and
(i) the first Accrual Period, the second LIBOR Business Day preceding the
Closing Date, and (ii) with respect to each Accrual Period thereafter, the
second LIBOR Business Day preceding the related Payment Date on which such
Accrual Period commences.

         INTEREST RATE ADJUSTMENT DATE: With respect to each Mortgage Loan, the
date or dates on which the Mortgage Rate is adjusted in accordance with the
related Mortgage Note.

         INTERESTED PERSON: As of any date of determination, the Depositor, the
HELOC Master Servicer, the HELOC Subservicer, the RMBS Master Servicer, the
Indenture Trustee, American Home Mortgage Investment Corp., any Mortgagor, or
any Person actually known to a Responsible Officer of the Trustee to be an
Affiliate of any of them.

         INVESTED AMOUNT: For any Payment Date, the Invested Amount on the
Closing Date reduced by (i) the aggregate amount of Investor Principal
Distribution Amounts (before taking into account any Overcollateralization
Reduction Amount) up to and including the related Payment Date and (ii) the
aggregate of Investor Charge-Off Amounts up to and including such Payment Date.
The Invested Amount on the Closing Date is $222,000,000 (the Group VII Cut-Off
Date Balance).

         INVESTOR CHARGE-OFF AMOUNT: For any Payment Date, the Floating
Allocation Percentage of Charge-Off Amounts incurred during the related Due
Period.

         INVESTOR INTEREST COLLECTIONS: For any Payment Date, the Floating
Allocation Percentage of Interest Collections for the related Due Period.

         INTEREST COVERAGE ACCOUNT: Each of the Group I Interest Coverage
Account, Group II Interest Coverage Account, Group III Interest Coverage
Account, Group IV Interest Coverage Account, Group V Interest Coverage Account,
Group VI Interest Coverage Account and Group VII Interest Coverage Account. The
Group VII Interest Coverage Amount is $120,309.53.

         INTEREST COVERAGE AMOUNT: The Group I Interest Coverage Amount is
$69,103.16. The Group II Interest Coverage Amount is $440,121,.08. The Group III
Interest Coverage Amount is $441,097.90. The Group IV Interest Coverage Amount
is $831,578.64. The Group V Interest Coverage Amount is $547,831.07. The Group
VI Interest Coverage Amount is $383,812.57.

         INVESTOR PRINCIPAL DISTRIBUTION AMOUNT: On every Payment Date from the
first Payment Date through and including the Payment Date in December 2009,
unless a Rapid Amortization Event has occurred is equal to the excess, if any,
of all Principal Collections received during the related Due Period over the
amount of all Additional Balances resulting from Draws made pursuant to the
related HELOC Mortgage Loan during the related Due Period; and on every Payment
Date after the Payment Date in December 2009 or if a Rapid Amortization Event
has previously occurred, is equal to all Principal Collections received during
the related Due Period. In each case such amount will be reduced by the
Overcollateralization Reduction Amount.

         INVESTMENT COMPANY ACT: The Investment Company Act of 1940, as amended,
and any amendments thereto.


                                       30
<PAGE>


         IRS: The Internal Revenue Service.

         ISSUER: American Home Mortgage Investment Trust 2004-4, a Delaware
statutory trust, or its successor in interest.

         ISSUER REQUEST: A written order or request signed in the name of the
Issuer by any one of its Authorized Officers and delivered to the Indenture
Trustee.

         LIBOR BUSINESS DAY: A day on which banks are open for dealing in
foreign currency and exchange in London and New York City.

         LIBOR NOTE: A Class I-A Note, Class II-A, Class III-A, Class VII-A
Note, Class M, Class VI-M or Class VI-B Note, or any Class IV-A Note or Class
V-A Note after the related Note Rate Change Date.

         LIEN: Any mortgage, deed of trust, pledge, conveyance, hypothecation,
assignment, participation, deposit arrangement, encumbrance, lien (statutory or
other), preference, priority right or interest or other security agreement or
preferential arrangement of any kind or nature whatsoever, including, without
limitation, any conditional sale or other title retention agreement, any
financing lease having substantially the same economic effect as any of the
foregoing and the filing of any financing statement under the UCC (other than
any such financing statement filed for informational purposes only) or
comparable law of any jurisdiction to evidence any of the foregoing; PROVIDED,
HOWEVER, that any assignment pursuant to Section 6.02 of the HELOC Servicing
Agreement or RMBS Servicing Agreement, as applicable, shall not be deemed to
constitute a Lien.

         LIFETIME RATE CAP: With respect to each Mortgage Loan with respect to
which the related Mortgage Note provides for a lifetime rate cap, the maximum
Mortgage Rate permitted over the life of such Mortgage Loan under the terms of
such Mortgage Note, as set forth in the Mortgage Loan Schedule.

         LIQUIDATED HELOC: Any HELOC Mortgage Loan that has become a Liquidated
Mortgage Loan.

         LIQUIDATED MORTGAGE LOAN: With respect to any Payment Date, any
Mortgage Loan in respect of which the HELOC Master Servicer, HELOC Subservicer
or RMBS Master Servicer, as applicable, has determined, in accordance with the
servicing procedures specified in the HELOC Servicing Agreement, HELOC
Subservicing Agreement or RMBS Servicing Agreement, as applicable, as of the end
of the related Due Period that substantially all Liquidation Proceeds, and/or
Recoveries with respect to a Charged-Off HELOC Mortgage Loan, which it
reasonably expects to recover with respect to the disposition of the related
Mortgaged Property or REO Property have been recovered.

         LIQUIDATION EXPENSES: Out-of-pocket expenses (exclusive of overhead)
which are incurred by or on behalf of the HELOC Master Servicer, HELOC
Subservicer or RMBS Master Servicer, as applicable, in connection with the
liquidation of any Mortgage Loan and not recovered under any insurance policy,
such expenses including, without limitation, legal fees and expenses, any
unreimbursed amount expended respecting the related Mortgage Loan and any


                                       31
<PAGE>


related and unreimbursed expenditures for real estate property taxes or for
property restoration, preservation or insurance against casualty loss or damage.

         LIQUIDATION PROCEEDS: Proceeds (including Insurance Proceeds) received
in connection with the liquidation of any Mortgage Loan or HELOC Mortgage Loan
or related REO Property, whether through trustee's sale, foreclosure sale or
otherwise.

         LOAN GROUP: Any of Loan Group I, Loan Group II, Loan Group III, Loan
Group IV, Loan Group V, Loan Group VI or Loan Group VII.

         LOAN GROUP I: The Group I Loans.

         LOAN GROUP II: The Group II Loans.

         LOAN GROUP III: The Group III Loans.

         LOAN GROUP IV: The Group IV Loans.

         LOAN GROUP V: The Group V Loans.

         LOAN GROUP VI: The Group VI Loans.

         LOAN GROUP VII: The Group VII Loans.

         LOAN-TO-VALUE RATIO: With respect to any Mortgage Loan, as of any date
of determination, a fraction expressed as a percentage, the numerator of which
is the then current principal amount of the Mortgage Loan, and the denominator
of which is the Appraised Value of the related Mortgaged Property.

         LOAN YEAR: With respect to any Mortgage Loan, the one-year period
commencing on the day succeeding the origination of such Mortgage Loan and
ending on the anniversary date of such Mortgage Loan, and each annual period
thereafter.

         LOCK FEATURE: An option available to a Mortgagor under a HELOC Mortgage
Loan that permits the Mortgagor to convert either the entire outstanding balance
due or any portion thereof to a fixed rate closed-end loan.

         LOCKED BALANCE: With respect to any HELOC Mortgage Loan as to which the
Lock Feature has been exercised, the portion of the Stated Principal Balance
thereof subject to a fixed Mortgage Rate.

         LOST NOTE AFFIDAVIT: With respect to any Mortgage Loan as to which the
original Mortgage Note has been lost or destroyed and has not been replaced, an
affidavit from the Seller certifying that the original Mortgage Note has been
lost, misplaced or destroyed (together with a copy of the related Mortgage
Note).

         MAJORITY CERTIFICATEHOLDER: A Holder of a 50.01% or greater Certificate
Percentage Interest of the Certificates.


                                       32
<PAGE>


         MANAGED AMORTIZATION PERIOD: The period from the Cut-off Date to the
earlier of (a) the Payment Date in December 2009 and (b) the occurrence of a
Rapid Amortization Event.

         MARGIN: With respect to each HELOC Mortgage Loan (other than (i) any
HELOC Mortgage Loan with a Fixed Teaser Rate in effect or (ii) the Locked
Balance relating to any HELOC Mortgage Loan as to which the Lock Feature has
been exercised), the spread over the applicable Index, as specified in the
related Mortgage Note.

         MASTER SERVICER: Each of the RMBS Master Servicer and the HELOC Master
Servicer, as applicable.

         MASTER SERVICER COLLECTION ACCOUNT: The account or accounts created and
maintained by the related Master Servicer pursuant to a Servicing Agreement.

         MASTER SERVICING FEE: With respect to each Mortgage Loan and any
Payment Date, the fee payable monthly to the Master Servicer in respect of
master servicing compensation that accrues at an annual rate equal to the Master
Servicing Fee Rate multiplied by the Stated Principal Balance of such Mortgage
Loan as of the first day of the related Due Period.

         MASTER SERVICING FEE RATE: The RMBS Master Servicing Fee Rate or the
HELOC Master Servicing Fee Rate, as applicable.

         MAXIMUM NOTE INTEREST RATE: With respect to any Payment Date and each
class of the Class I-A, Class II-A, Class III-A, Class M, Class VI-M and Class
VI-B Notes, and with respect to the Class IV-A Notes and Class V-A Notes and any
Payment Date after the related Rate Change Date, 11.00% per annum.

         MAXIMUM MORTGAGE RATE: With respect to each ARM Loan and each HELOC
Mortgage Loan, the maximum Mortgage Rate.

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

         MERS(R) SYSTEM: The system of recording transfers of Mortgages
electronically maintained by MERS.

         MIN: The Mortgage Identification Number for Mortgage Loans registered
with MERS on the MERS(R) System.

         MINIMUM MORTGAGE RATE: With respect to each ARM Loan and each HELOC
Mortgage Loan, the minimum Mortgage Rate.

         MINIMUM MONTHLY PAYMENT: The minimum amount required to be paid by the
mortgagor pursuant to the terms of a Group I mortgage note.

         MINIMUM TRANSFEROR INTEREST:  Zero.


                                       33
<PAGE>


         MOM LOAN: With respect to any Mortgage Loan, MERS acting as the
mortgagee of such Mortgage Loan, solely as nominee for the originator of such
Mortgage Loan and its successors and assigns, at the origination thereof.
         MONTHLY ADVANCE: As to any Mortgage Loan, other than a HELOC Mortgage
Loan, any advance made by the RMBS Master Servicer pursuant to Section 4.04 of
the RMBS Servicing Agreement or by a Subservicer in respect of delinquent
Monthly Payments of principal and interest pursuant to the related Subservicing
Agreement.

         MONTHLY PAYMENT: With respect to any Mortgage Loan (including any REO
Property) that is not a HELOC Mortgage Loan and any Due Date, the payment of
principal and interest due thereon in accordance with the amortization schedule
at the time applicable thereto (after adjustment, if any, for partial Principal
Prepayments and for Deficient Valuations occurring prior to such Due Date but
before any adjustment to such amortization schedule by reason of any bankruptcy,
other than a Deficient Valuation, or similar proceeding or any moratorium or
similar waiver or grace period). With respect to any HELOC Mortgage Loan, the
scheduled monthly payment of principal and/or interest required to be made by a
Mortgagor on such HELOC Mortgage Loan.

         MOODY'S: Moody's Investors Service, Inc. or its successor in interest.

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

         MORTGAGE FILE: The file containing the Related Documents pertaining to
a particular Mortgage Loan and any additional documents required to be added to
the Mortgage File pursuant to the Mortgage Loan Purchase Agreement or the HELOC
Servicing Agreement or RMBS Servicing Agreement, as applicable.

         MORTGAGE LOANS: The Mortgage Loans and HELOC Mortgage Loans that will
be transferred and assigned to the Trust pursuant to Section 2.03(a) of the
Indenture, each Mortgage Loan so held being identified in the Mortgage Loan
Schedule. The Mortgage Loans have been divided into seven groups, Loan Group I,
Loan Group II, Loan Group III, Loan Group IV, Loan Group V, Loan Group VI and
Loan Group VII.

         MORTGAGE LOAN PURCHASE AGREEMENT: The Mortgage Loan Purchase Agreement,
dated as of the Closing Date, between the Seller, as seller, and the Purchaser,
as purchaser, relating to the sale, transfer and assignment of the Mortgage
Loans.

         MORTGAGE LOAN SCHEDULE: With respect to any date, the schedule of
Mortgage Loans held by the Issuer on such date. The schedule of Mortgage Loans
as of the Cut-off Date is the schedule set forth in Exhibit B of the Indenture,
which schedule sets forth as to each Mortgage Loan:

         (i)      the loan number and name of the Mortgagor;

         (ii)     the street address, city, state and zip code of the Mortgaged
Property;


                                       34
<PAGE>


         (iii)    the original Mortgage Rate;

         (iv)     the maturity date;

         (v)      the original principal balance;

         (vi)     the first Payment Date;

         (vii)    the type of Mortgaged Property;

         (viii)   the Monthly Payment in effect as of the Cut-off Date;

         (ix)     the Cut-off Date Principal Balance and with respect to each
HELOC Mortgage Loan, separately indicating any Locked Balance and any HELOC
Balance;

         (x)      the Index and the Gross Margin, if applicable;

         (xi)     the Adjustment Date frequency and Payment Date frequency, if
applicable;

         (xii)    the occupancy status;

         (xiii)   the purpose of the Mortgage Loan;

         (xiv)    the Appraised Value of the Mortgaged Property;

         (xv)     the original term to maturity;

         (xvi)    the paid-through date of the Mortgage Loan;

         (xvii)   the Loan-to-Value Ratio;

         (xviii)  whether or not the Mortgage Loan was underwritten pursuant to
a limited documentation program;

         (xix)    the Loan Group;

         (xx)     whether the Mortgage Loan has a fixed interest rate or an
adjustable interest rate;

         (xxi)    with respect to each HELOC Mortgage Loan, the account number;

         (xxii)   with respect to each HELOC Mortgage Loan, the Credit Limit;

         (xxiii)  with respect to each HELOC Mortgage Loan, the CLTV as of the
date of origination of the related HELOC Mortgage Loan;

         (xxiv)   with respect to each HELOC Mortgage Loan, the Mortgage Rate as
of the Cut-off Date, separately indicating the Mortgage Rates applicable to any
Locked Balance and any HELOC Balance;


                                       35
<PAGE>


         (xxv)    with respect to each HELOC Mortgage Loan, the debt-to-income
ratio;

         (xxvi)   with respect to each HELOC Mortgage Loan, the FICO; and

         (xxvvii) with respect to each HELOC Mortgage Loan whether the related
Mortgage Rate was supposed to reset in November 2004 but did not.

         The Mortgage Loan Schedule shall also set forth the total of the
amounts described under (ix) above for all of the Mortgage Loans.

         MORTGAGE NOTE: The note or other evidence of the indebtedness of a
Mortgagor under a Mortgage Loan that is not a HELOC Mortgage Loan. With respect
to a HELOC Mortgage Loan, the related Credit Line Agreement executed by the
related Mortgager and any amendment or modification thereof.

         MORTGAGE RATE: With respect to any Mortgage Loan that is not a HELOC
Mortgage Loan, the annual rate at which interest accrues on such Mortgage Loan.
With respect to any HELOC Mortgage Loan as of any day, the variable interest
rate applicable under the related Mortgage Note, provided, that if the Lock
Feature has been exercised or the Fixed Teaser Rate is in effect with respect to
a HELOC Mortgage Loan or any portion thereof, the Mortgage Rate for such HELOC
Mortgage Loan or portion thereof shall be the resulting fixed interest rate.

         MORTGAGED PROPERTY: The underlying property, including real property
and improvements thereon, securing a Mortgage Loan.

         MORTGAGOR: The obligor or obligors under a Mortgage Note.

         NEGATIVE AMORTIZATION AMOUNT: With respect to any Payment Date, the
aggregate amount of negative amortization with respect to the Group I Loans for
the related Due Period.

         NET LIQUIDATION PROCEEDS: With respect to any Liquidated Mortgage Loan,
Liquidation Proceeds and Subsequent Recoveries net of unreimbursed Servicing
Advances by the HELOC Master Servicer, HELOC Subservicer or RMBS Master
Servicer, as applicable, Monthly Advances and Liquidation Expenses.

         NET MONTHLY EXCESS CASHFLOW: With respect to Loan Group I, Loan Group
II, Loan Group III, Loan Group IV and Loan Group V, as determined in the
aggregate for any Payment Date, the sum of (1) the excess of (x) the Group I,
Group II, Group III, Group IV and Group V Available Funds for such Payment Date
over (y) the sum for such Payment Date of (A) the aggregate amount of Accrued
Note Interest for the Class I-A, Class II-A, Class III-A, Class IV-A, Class V-A
and Class M Notes and (B) the Principal Remittance Amount used to make payments
in respect of principal to these Notes, and (2) amounts payable from the Net
Monthly Excess Cashflow for the Group VI Loans as provided in Section 3.06(d) of
the Indenture. With respect to Loan Group VI, for any Payment Date and, the sum
of (1) the excess of (x) the related Available Funds for such Payment Date over
(y) the sum for such Payment Date of (A) the aggregate amount of Accrued Note
Interest for the Class VI-A, Class VI-M and Class VI-B Notes and (B) the
Principal Remittance Amount used to make payments in respect of principal to
these Notes and (2) amounts payable from the Net Monthly Excess Cashflow for the
Group I, Group II, Group III, Group IV and Group V Loans as provided in Section
3.05(c).

         NET MORTGAGE RATE: For any Mortgage Loan or HELOC Mortgage Loan, the
then applicable Mortgage Rate thereon minus the Master Servicing Fee Rate
expressed as a per annum rate.


                                       36
<PAGE>


         NET RECOVERIES: With respect to any Charged-Off HELOC Mortgage Loan,
Recoveries net of unreimbursed HELOC Master Servicing Fees with respect thereto.

         NET SWAP FEE: With respect to any Payment Date, an amount equal to the
excess, if any, of (a) the aggregate amount payable on that Payment Date to the
Swap Agreement Counterparty in respect of the Swap Agreements, over (b) the
aggregate amount payable on that Payment Date to the Trust from the Swap
Agreement Counterparty pursuant to the Swap Agreements.

         NET SWAP FEE RATE: With respect to any Payment Date, the fraction,
expressed as a rate per annum, equal to (x) the Net Swap Fee on such Payment
Date related to Loan Group II and Loan Group III over (y) the aggregate Stated
Principal Balance of the related Mortgage Loans and the related Pre-funded
Amount.

         NET WAC SHORTFALL: With respect to the Class IV-A Notes and Class V-A
Notes, on or prior to the related Note Rate Change Date, and with respect to the
Class VI-A Notes on any Payment Date, as determined separately for each Class of
Notes, the excess, if any, of (x) the Accrued Note Interest thereon for such
Payment Date calculated pursuant to clause (i)(a) of the definition of Note
Interest Rate over (y) Accrued Note Interest thereon for such Payment Date
calculated at the related Available Funds Rate.

         NET WAC SHORTFALL CARRY-FORWARD AMOUNT: With respect to the Class IV-A
and Class V-A Notes, on or prior to the related Note Rate Change Date, and with
respect to the Class VI-A Notes and any Payment Date, as determined separately
for each such class of Notes an amount equal to the aggregate amount of Net WAC
Shortfall for such Notes on such Payment Date, plus any unpaid Net WAC Shortfall
for such Class of Notes from prior Payment Dates, plus interest thereon at the
Note Interest Rate for such Payment Date for such class for the related Accrual
Period, to the extent previously unreimbursed by the Net Monthly Excess
Cashflow.

         NET WORTH: With respect to any Person at any date, the excess of total
assets over total liabilities of such Person, and its consolidated subsidiaries,
on such date, each to be determined in accordance with generally accepted
accounting principles (GAAP) as in effect in the United States from time to
time.

         NONRECOVERABLE ADVANCE: Any advance or, respecting the HELOC Mortgage
Loans, any Servicing Advance (i) which was previously made or is proposed to be
made by the HELOC Master Servicer, HELOC Subservicer or RMBS Master Servicer, as
applicable; and (ii) which, in the good faith judgment of the HELOC Master
Servicer, HELOC Subservicer or RMBS Master Servicer, will not or, in the case of
a proposed advance, would not, be ultimately recoverable by the HELOC Master
Servicer, HELOC Subservicer or RMBS Master Servicer, as applicable, from
Liquidation Proceeds, Recoveries or future payments on any Mortgage Loan. The
Indenture Trustee may conclusively rely on any determination of
nonrecoverability made by the HELOC Master Servicer or RMBS Master Servicer, as
applicable.

         NOTE: A Class A Note, Class M Note or Class N Note.


                                       37
<PAGE>


         NOTE INTEREST RATE: With respect to each Payment Date and the Class
I-A, Class II-A, Class III-A, Class M, Class VI-M and Class VI-B Notes, a
floating rate equal to the least of (i) One-Month LIBOR plus the related Note
Margin, (ii) the related Maximum Note Interest Rate and (iii) the related
Available Funds Rate with respect to such Payment Date. With respect to each
Payment Date and the Class IV-A Notes and Class V-A Notes the least of (i)(a)
prior to the related Note Rate Change Date, 4.39% per annum and 4.44% per annum,
respectively and (b) on or after the related Note Rate Change Date, a rate equal
to Six-Month LIBOR plus the related Note Margin, (ii) the related Maximum Note
Interest Rate and (iii) the related Available Funds Rate. With respect to each
Payment Date and the Class VI-A Notes, the lesser of (i) (a) with respect to any
Payment Date prior to the related Step-Up Date, 5.50% per annum and (b) on any
Payment Date on or after the related Step-Up Date, 6.00% per annum and (ii) the
related Available Funds Rate. With respect to each Payment Date and the Class
VII-A Notes, a rate equal to the lesser of (x) One-Month LIBOR plus 0.20% per
annum and (y) the related Available Funds Rate. With respect to each Payment
Date and the Class N Notes, 5.00% per annum.

         NOTE MARGIN: With respect to the Class I-A-1 Notes, on any Payment Date
prior to the Step-Up Date, 0.340% per annum, and on any Payment Date on and
after the Step-Up Date, 0.680% per annum. With respect to the Class I-A-2 Notes,
on any Payment Date prior to the Step-Up Date, 0.400% per annum, and on any
Payment Date on and after the Step-Up Date, 0.800% per annum. With respect to
the Class II-A-1 Notes, on any Payment Date prior to the Step-Up Date, 0.290%
per annum, and on any Payment Date on and after the Step-Up Date, 0.580% per
annum. With respect to the Class II-A-2 Notes, on any Payment Date prior to the
Step-Up Date, 0.360% per annum, and on any Payment Date on and after the Step-Up
Date, 0.720% per annum. With respect to the Class III-A Notes, on any Payment
Date prior to the Step-Up Date, 0.300% per annum, and on any Payment Date on and
after the Step-Up Date, 0.600% per annum. With respect to the Class M-1 Notes,
on any Payment Date prior to the Step-Up Date, 0.550% per annum, and on any
Payment Date on and after the Step-Up Date, 0.825% per annum. With respect to
the Class M-2 Notes, on any Payment Date prior to the Step-Up Date, 1.050% per
annum, and on any Payment Date on and after the Step-Up Date, 1.575% per annum.
With respect to the Class M-3 Notes, on any Payment Date prior to the Step-Up
Date, 1.750% per annum, and on any Payment Date on and after the Step-Up Date,
2.625% per annum. With respect to the Class VI-M-1 Notes, on any Payment Date
prior to the Step-Up Date, 0.550% per annum, and on any Payment Date on and
after the Step-Up Date, 0.825% per annum. With respect to the Class VI-M-2
Notes, on any Payment Date prior to the Step-Up Date, 0.980% per annum, and on
any Payment Date on and after the Step-Up Date, 1.470% per annum. With respect
to the Class VI-M-3 Notes, on any Payment Date prior to the Step-Up Date, 1.100%
per annum, and on any Payment Date on and after the Step-Up Date, 1.650% per
annum. With respect to the Class VI-B-1 Notes, on any Payment Date prior to the
Step-Up Date, 1.670% per annum, and on any Payment Date on and after the Step-Up
Date, 2.505% per annum. With respect to the Class VI-B-2 Notes, on any Payment
Date prior to the Step-Up Date, 1.800% per annum, and on any Payment Date on and
after the Step-Up Date, 2.700% per annum. With respect to the Class VI-B-3
Notes, on any Payment Date prior to the Step-Up Date, 2.750% per annum, and on
any Payment Date on and after the Step-Up Date, 4.125% per annum. With respect
to each of the Class IV-A Notes and Class V-A Notes after the applicable Note
Rate Change Date, 2.000% per annum.

         NOTE OWNER: The Beneficial Owner of a Note.


                                       38
<PAGE>


         NOTE PRINCIPAL BALANCE: With respect to any Note as of any date of
determination, the initial Note Principal Balance as stated on the face thereof,
minus all amounts distributed in respect of principal with respect to such Note
and (a) plus, in the case of the Class I-A-2, Class II-A-2, Class M, Class VI-M
and Class VI-B Notes, any Subsequent Recoveries allocated thereto and (b) minus,
in the case of the Class I-A-2, Class II-A-2, Class M, Class VI-M and Class VI-B
Notes, the aggregate amount of any reductions in the Note Principal Balance
thereof deemed to have occurred in connection with allocations of Realized
Losses on all prior Payment Dates in accordance with Section 3.38 of the
Indenture.

         NOTE RATE CHANGE DATE: With respect to the Class IV-A Notes, the
Payment Date in December 2009. With respect to the Class V-A Notes, the Payment
Date in December 2009.

         NOTE REGISTER: The register maintained by the Note Registrar in which
the Note Registrar shall provide for the registration of Notes and of transfers
and exchanges of Notes.

         NOTE REGISTRAR: The Indenture Trustee, in its capacity as Note
Registrar, or any successor to the Indenture Trustee in such capacity.

         NOTEHOLDER OR HOLDER: The Person in whose name a Note is registered in
the Note Register, except that, any Note registered in the name of the
Depositor, the Issuer, American Home Mortgage Investment Corp., the Indenture
Trustee, the Seller, the HELOC Master Servicer or the RMBS Master Servicer or
any Affiliate of any of them shall be deemed not to be a holder or holders, nor
shall any so owned be considered outstanding, for purposes of giving any
request, demand, authorization, direction, notice, consent or waiver under the
Indenture or the Trust Agreement; provided that, in determining whether the
Indenture Trustee shall be protected in relying upon any such request, demand,
authorization, direction, notice, consent or waiver, only Notes that a
Responsible Officer of the Indenture Trustee or the Owner Trustee actually knows
to be so owned shall be so disregarded. Owners of Notes that have been pledged
in good faith may be regarded as Holders if the pledgee establishes to the
satisfaction of the Indenture Trustee or the Owner Trustee the pledgee's right
so to act with respect to such Notes and that the pledgee is not the Issuer, any
other obligor upon the Notes or any Affiliate of any of the foregoing Persons.

         OFFICER'S CERTIFICATE: With respect to the HELOC Master Servicer, HELOC
Subservicer or RMBS Master Servicer, as applicable, a certificate signed by the
President, Managing Director, a Director, a Vice President or an Assistant Vice
President, of the HELOC Master Servicer, HELOC Subservicer or RMBS Master
Servicer, as applicable, and delivered to the Indenture Trustee or the HELOC
Master Servicer, as applicable. With respect to the Issuer, a certificate signed
by any Authorized Officer of the Issuer, under the circumstances described in,
and otherwise complying with, the applicable requirements of Section 10.01 of
the Indenture, and delivered to the Indenture Trustee. Unless otherwise
specified, any reference in the Indenture to an Officer's Certificate shall be
to an Officer's Certificate of any Authorized Officer of the Issuer.

         ONE-MONTH LIBOR: With respect to any Accrual Period, the rate
determined by the Indenture Trustee on the related Interest Determination Date
on the basis of the London


                                       39
<PAGE>


interbank offered rate for one-month United States dollar deposits, as such
rates appear on the Telerate Screen Page 3750, as of 11:00 a.m. (London time) on
such Interest Determination Date.

         In the event that on any Interest Determination Date, Telerate Screen
Page 3750 fails to indicate the London interbank offered rate for one-month
United States dollar deposits, then One-Month LIBOR for the related Accrual
Period will be established by the Indenture Trustee as follows:

         (i)      If on such Interest Determination Date two or more Reference
Banks provide such offered quotations, One-Month LIBOR for the related Accrual
Period shall be the arithmetic mean of such offered quotations (rounded upwards
if necessary to the nearest whole multiple of 1/16%).

         (ii)     If on such Interest Determination Date fewer than two
Reference Banks provide such offered quotations, One-Month LIBOR for the related
Accrual Period shall be the higher of (i) One-Month LIBOR as determined on the
previous Interest Determination Date and (ii) the Reserve Interest Rate.

         (iii)    If no such quotations can be obtained and no Reference Bank
rate is available, One-Month LIBOR will be the One-Month LIBOR rate applicable
to the preceding Accrual Period.

         The establishment of One-Month LIBOR on each Interest Determination
Date by the Indenture Trustee and the Indenture Trustee's calculation of the
applicable Note Interest Rate applicable for the related Accrual Period shall
(in the absence of manifest error) be final and binding.

         OPINION OF COUNSEL: A written opinion of counsel acceptable to the
Indenture Trustee, the Insurer or HELOC Master Servicer, as applicable, in its
reasonable discretion which counsel may be in-house counsel for the HELOC Master
Servicer, HELOC Subservicer or RMBS Master Servicer, as applicable, if
acceptable to the Indenture Trustee, the HELOC Master Servicer, the Insurer and
the Rating Agencies or counsel for the Depositor, as the case may be.

         ORIGINAL PRE-FUNDED AMOUNT: With respect to Loan Groups I, II, III, VI,
V, VI and VII, the amount deposited by the Depositor on the Closing Date in the
related Pre-Funding Account.

         ORIGINAL VALUE: Except in the case of a refinanced Mortgage Loan, the
lesser of the Appraised Value or sales price of Mortgaged Property at the time a
Mortgage Loan is closed, and for a refinanced Mortgage Loan, the Original Value
is the value of such property set forth in an appraisal acceptable to the HELOC
Master Servicer, HELOC Subservicer or RMBS Master Servicer, as applicable.

         OUTSTANDING: With respect to the Notes, as of the date of
determination, all Notes theretofore executed, authenticated and delivered under
this Indenture except:

         (i)      Notes theretofore canceled by the Note Registrar or delivered
to the Indenture Trustee for cancellation; and


                                       40
<PAGE>


         (ii)     Notes in exchange for or in lieu of which other Notes have
been executed, authenticated and delivered pursuant to the Indenture unless
proof satisfactory to the Indenture Trustee is presented that any such Notes are
held by a holder in due course.

         OUTSTANDING MORTGAGE LOAN: As to any Due Date, a Mortgage Loan
(including an REO Property but excluding a Charged-Off HELOC Mortgage Loan)
which was not the subject of a Principal Prepayment in Full, Cash Liquidation or
REO Disposition and which was not purchased, deleted or substituted for prior to
such Due Date pursuant to the HELOC Servicing Agreement, HELOC Subservicing
Agreement or RMBS Servicing Agreement, as applicable.

         OVERCOLLATERALIZATION INCREASE AMOUNT: With respect to the Group I,
Group II, Group III, Group IV and Group V Loans, with respect to any Payment
Date, the lesser of (i) the related Net Monthly Excess Cashflow for such Payment
Date and (ii) the excess, if any, of (a) the related Overcollateralization
Target Amount over (b) the related Overcollateralized Amount on such Payment
Date (after taking into account payments to the related Notes of the related
Basic Principal Distribution Amount on such Payment Date). With respect to the
Group VI Loans, with respect to any Payment Date on or prior to the earlier of
(x) the first possible optional termination date with respect to the Group VI
Loans and (y) the Payment Date in December 2014, the lesser of (i) the related
Net Monthly Excess Cashflow for such Payment Date and (ii) the excess, if any,
of (a) the related Overcollateralization Target Amount over (b) the related
Overcollateralized Amount on such Payment Date (after taking into account
payments to the related Notes of the related Basic Principal Distribution Amount
on such Payment Date), and thereafter, the related Net Monthly Excess Cashflow
for such Payment Date.

         OVERCOLLATERALIZATION REDUCTION AMOUNT: With respect to Loan Group VII
and any Payment Date, the lesser of (x) the related Excess Overcollateralization
Amount for such Payment Date and (y) the Investor Principal Distribution Amount
for such Payment Date (before taking into account the related
Overcollateralization Reduction Amount).

         OVERCOLLATERALIZATION TARGET AMOUNT: With respect to Loan Group I, Loan
Group II, Loan Group III, Loan Group IV and Loan Group V, 0.35% of the sum of
the Group I, Group II, Group III, Group IV and Group V Cut-off Date Balances
plus the amount of any Additional Negative Amortization Principal Amount. With
respect to Loan Group VI, 1.50% of the Group VI Cut-off Date Balance. With
respect to Loan Group VII, (1) on or prior to the related Stepdown Date, an
amount equal to the sum of (a) the Group VII Delinquent HELOC Amount and (b)
4.25% of the Group VII Cut-off Date Balance and (2) on or after the related
Stepdown Date, an amount equal to the sum of (a) the Group VII Delinquent HELOC
Amount and (b) the greatest of (x) 8.50% of the Invested Amount, (y) 0.90% of
the Group VII Cut-off Date Balance, and (z) the aggregate Stated Principal
Balance of the three Group VII Loans with the greatest Stated Principal
Balances; provided, however, that if a related Trigger Event is in effect for
the Group VII Loans, then the Overcollateralization Target Amount for the Group
VII Loans will be the same as on the prior Payment Date.

         OVERCOLLATERALIZED AMOUNT: For any Payment Date and Loan Group I, Loan
Group II, Loan Group III, Loan Group IV and Loan Group V, the amount, if any, by
which (i) the aggregate Stated Principal Balance of the related Mortgage Loans
(after giving effect to scheduled payments of principal due during the related
Due Period, to the extent received or


                                       41
<PAGE>


advanced, and unscheduled collections of principal received during the related
Prepayment Period, including Realized Losses on the Mortgage Loans incurred
during the related Prepayment Period) and the related Pre-Funded Amount, exceeds
(ii) the aggregate Note Principal Balance of the related Class I-A, Class II-A,
Class III-A, Class IV-A, Class V-A and Class M Notes as of such Payment Date
(assuming that 100% of the related Principal Remittance Amount is applied as a
principal payment on these Notes on such Payment Date). For any Payment Date and
Loan Group VI, the amount, if any, by which (i) the aggregate Stated Principal
Balance of the related Mortgage Loans (after giving effect to scheduled payments
of principal due during the related Due Period, to the extent received or
advanced, and unscheduled collections of principal received during the related
Prepayment Period, including Realized Losses on the Mortgage Loans incurred
during the related Prepayment Period) and the related Pre-Funded Amount, exceeds
(ii) the aggregate Note Principal Balance of the Class VI-A, Class VI-M and
Class VI-B Notes as of such Payment Date (assuming that 100% of the Principal
Remittance Amount is applied as a principal payment on these Notes on such
Payment Date). For any Payment Date and Loan Group VII, the amount, if any, by
which (i) the Invested Amount exceeds (ii) the Note Principal Balance of the
Class VII-A Notes as of such Payment Date (after giving effect to all other
distributions of principal on these Notes on such Payment Date).

         OWNER TRUST ESTATE: The corpus of the Issuer created by the Trust
Agreement which consists of items referred to in Section 3.01 of the Trust
Agreement.

         OWNER TRUSTEE: Wilmington Trust Company and its successors and assigns
or any successor owner trustee appointed pursuant to the terms of the Trust
Agreement.

         OWNER TRUSTEE'S FEE: A fee of $4,000 per annum payable to the Owner
Trustee in advance on the Closing Date and each anniversary thereof by the
Indenture Trustee; provided, however, that in the event of any removal or
resignation of the Owner Trustee, the Owner Trustee will promptly remit to the
Indenture Trustee the portion of the Owner Trustee Fee that would have been
earned by the Owner Trustee during the remainder of such year had it not been
removed or resigned or the Notes redeemed.

         PAYING AGENT: Any paying agent or co-paying agent appointed pursuant to
Section 3.03 of the Indenture, which initially shall be the Indenture Trustee.

         PAYMENT ACCOUNT: The account established by the Indenture Trustee
pursuant to Section 3.01 of the Indenture. The Payment Account shall be an
Eligible Account.

         PAYMENT DATE: The 25th day of each month, or if such day is not a
Business Day, then the next Business Day, commencing in January 2005.

         PERCENTAGE INTEREST: With respect to any Note, the percentage obtained
by dividing the Note Principal Balance of such Note by the aggregate Note
Principal Balances of all Notes of that Class. With respect to any Certificate,
the percentage as stated on the face thereof.


                                       42
<PAGE>


         PERIODIC RATE CAP: With respect to any ARM Loan, the maximum rate, if
any, by which the Mortgage Rate on such Mortgage Loan can adjust on any
Adjustment Date, as stated in the related Mortgage Note or Mortgage.

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

         PLAN: Any employee benefit plan or certain other retirement plans and
arrangements, including individual retirement accounts and annuities, Keogh
plans and bank collective investment funds and insurance company general or
separate accounts in which such plans, accounts or arrangements are invested,
that are subject to ERISA or Section 4975 of the Code.

         PLAN ASSETS: Assets of a Plan within the meaning of
Department of Labor regulation 29 C.F.R. ss.
2510.3-101.

         POOL BALANCE: With respect to any date of determination, the aggregate
of the Stated Principal Balances of all Mortgage Loans as of such date.

         PREFERENCE AMOUNT: Any amount previously distributed to a Class VII-A
Noteholder on the Class VII-A Notes that is recoverable and sought to be
recovered as a voidable preference by a trustee in bankruptcy pursuant to the
United States Bankruptcy Code (11 U.S.C.), as amended from time to time, in
accordance with a final nonappealable order of a court having competent
jurisdiction.

         PREMIUM AMOUNT: The premium payable to the Insurer pursuant to the
Insurance Agreement.

         PREPAYMENT INTEREST SHORTFALL: As to any Payment Date and any Mortgage
Loan (other than a Mortgage Loan relating to an REO Property or a HELOC Mortgage
Loan) that was the subject of (a) a Principal Prepayment in Full during the
related Prepayment Period, an amount equal to the excess of interest accrued
during the related Prepayment Period at the Net Mortgage Rate on the Stated
Principal Balance of such Mortgage Loan over the sum of the amount of interest
paid by the Mortgagor for such Prepayment Period to the date of such Principal
Prepayment in Full and any Monthly Advances made by the RMBS Master Servicer
pursuant to Section 4.04 of the RMBS Servicing Agreement or (b) a partial
Principal Prepayment during the related Prepayment Period, an amount equal to
the interest at the Mortgage Rate (less the Master Servicing Fee Rate) during
the related Prepayment Period on the amount of such partial Principal
Prepayment.

         PREPAYMENT PERIOD: With respect to each Mortgage Loan and any Payment
Date, the calendar month immediately preceding the month in which such Payment
Date occurs.

         PRINCIPAL COLLECTIONS: Amounts collected during the related Due Period
on the HELOC Mortgage Loans and allocated to principal in accordance with the
terms of the related Credit Line Agreement together with the principal portion
of any Purchase Price or any Substitution Adjustment Amounts paid during the
preceding Due Period and any Group VII Pre-Funded


                                       43
<PAGE>


Amount to be distributed to the Class VII-A Noteholders pursuant to Section 3.32
of the Indenture.

         PRINCIPAL DISTRIBUTION AMOUNT: For any Payment Date, as determined
separately for the Group I, Group II, Group III, Group IV and Group V Loans
collectively and for the Group VI Loans, the sum of (a) the related Basic
Principal Distribution Amount, and (b) the related Overcollateralization
Increase Amount. In addition, the Principal Distribution Amount shall be reduced
to the extent the Overcollateralizated Amount for these Loan Groups exceeds the
related Overcollateralized Target Amount, by the amount of such excess.

         PRINCIPAL PREPAYMENT: Any payment or other recovery of principal on a
Mortgage Loan which is received in advance of its scheduled Due Date to the
extent that it is not accompanied by an amount as to interest representing
scheduled interest due on any date or dates in any month or months subsequent to
the month of prepayment, including Insurance Proceeds and Repurchase Proceeds,
but excluding the principal portion of Net Liquidation Proceeds received at the
time a Mortgage Loan becomes a Liquidated Mortgage Loan.

         PRINCIPAL REMITTANCE AMOUNT: For any Payment Date and any Loan Group or
the Mortgage Loans in the aggregate, as applicable, the sum of

         1.       the principal portion of all scheduled monthly payments on the
                  related Mortgage Loans due on the related Due Date, to the
                  extent received or advanced;

         2.       the principal portion of all proceeds of the repurchase of a
                  Mortgage Loan in the related Loan Group (or, in the case of a
                  substitution, certain amounts representing a principal
                  adjustment) as required by the Mortgage Loan Purchase
                  Agreement during the preceding calendar month;

         3.       any amount remaining on deposit in the related Pre-Funding
                  Account at the end of the Funding Period; and

         4.       the principal portion of all other unscheduled collections
                  received during the preceding calendar month in respect of the
                  related Mortgage Loans, including full and partial
                  prepayments, the proceeds of any repurchase of such Mortgage
                  Loans by the Seller or holder of the Trust Certificates,
                  Liquidation Proceeds and Insurance Proceeds, in each case to
                  the extent applied as recoveries of principal.

In addition, with respect to the Group I Loans, the Principal Remittance Amount
shall be reduced (to not less than zero) by the Negative Amortization Amount on
the Group I Loans.

         PRIMARY INSURANCE POLICY: Each primary policy of mortgage guaranty
insurance issued by a Qualified Insurer or any replacement policy therefor.

         PRINCIPAL PREPAYMENT IN FULL: Any Principal Prepayment made by a
Mortgagor of the entire principal balance of a Mortgage Loan.

         PROCEEDING: Any suit in equity, action at law or other judicial or
administrative proceeding.


                                       44
<PAGE>


         PROSPECTUS: The Prospectus Supplement, dated December 17, 2004,
together with the attached Prospectus, dated December 17, 2004.

         PURCHASE PRICE: The meaning specified in Section 2.2(a) of the Mortgage
Loan Purchase Agreement.

         PURCHASER: American Home Mortgage Securities LLC., a Delaware
corporation, and its successors and assigns.

         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 an insurer
by the HELOC Master Servicer, HELOC Subservicer or RMBS Master Servicer, as
applicable, and as a Fannie Mae-approved mortgage insurer.

         RAPID AMORTIZATION EVENT:  As defined in Section 3.08 in the Indenture.

         RAPID AMORTIZATION PERIOD: Begins on the earlier of Payment Date in
January 2010 or the occurrence of a Rapid Amortization Event.

         RATING AGENCY: Any nationally recognized statistical rating
organization, or its successor, that rated the Notes at the request of the
Depositor at the time of the initial issuance of the Notes. Initially, Standard
& Poor's and Moody's. If such organization or a successor is no longer in
existence, "Rating Agency" with respect to the Class A, Class M and Class N
Notes shall be such nationally recognized statistical rating organization, or
other comparable Person, designated by the Depositor, notice of which
designation shall be given to the Indenture Trustee, the HELOC Master Servicer
and the RMBS Master Servicer. References herein to the highest short term
unsecured rating category of a Rating Agency shall mean A-1 or better in the
case of Standard & Poor's and P-1 or better in the case of Moody's and in the
case of any other Rating Agency shall mean such equivalent ratings. References
herein to the highest long-term rating category of a Rating Agency shall mean
"AAA" in the case of Standard & Poor's and "Aaa" in the case of Moody's and in
the case of any other Rating Agency, such equivalent rating.

         REALIZED LOSS: With respect to a Mortgage Loan, other than a HELOC
Mortgage Loan, is (i) a Deficient Valuation, or (ii) as to any Liquidated
Mortgage Loan, the unpaid principal balance thereof plus accrued and unpaid
interest thereon at the Mortgage Rate through the last day of the month of
liquidation less the Net Liquidation Proceeds with respect to such Mortgage Loan
and the related Mortgaged Property.

         RECORD DATE: For each class of Notes, other than the Class IV-A, Class
V-A and Class VI-A Notes, and each Payment Date, will be the close of business
on the business day immediately preceding such Payment Date; provided, however,
if any such Note is no longer a Book-Entry Note, the "Record Date" for such
class of Notes shall be the close of business on the last business day of the
calendar month preceding such Payment Date. For each class of the



                                       45
<PAGE>


Class IV-A, Class V-A and Class VI-A Notes and each Payment Date, the close of
business on the last Business Day of the calendar month preceding such Payment
Date.

         RECOVERIES: With respect to a Charged-Off HELOC Mortgage Loan, the
proceeds (including Released Mortgaged Property Proceeds but not including
amounts drawn under the Insurance Policy) received by the HELOC Master Servicer
or HELOC Subservicer in connection with such Charged-Off HELOC Mortgage Loan
minus related Servicing Advances.

         REFERENCE BANKS: Any leading banks selected by the Indenture Trustee
and engaged in transactions in Eurodollar deposits in the international
Eurocurrency market (i) with an established place of business in London, (ii)
whose quotations appear on the Telerate Screen Page 3750 on the Interest
Determination Date in question, (iii) which have been designated as such by the
Indenture Trustee, and (iv) which are not Affiliates of the Depositor, the
Seller, the HELOC Master Servicer or the RMBS Master Servicer.

         REGISTERED HOLDER: The Person in whose name a Note is registered in the
Note Register on the applicable Record Date.

         RELATED DOCUMENTS: With respect to each Mortgage Loan, the documents
specified in Section 2.1(b) of the Mortgage Loan Purchase Agreement, and the
related Subsequent Mortgage Loan Purchase Agreement, and any documents required
to be added to such documents pursuant to the Mortgage Loan Purchase Agreement,
the Trust Agreement, Indenture, the HELOC Servicing Agreement or the RMBS
Servicing Agreement.

         RELEASED MORTGAGED PROPERTY PROCEEDS: As to any HELOC Mortgage Loan,
proceeds received by the HELOC Master Servicer or HELOC Subservicer, as
applicable, in connection with (a) a taking of an entire Mortgaged Property by
exercise of the power of eminent domain or condemnation or (b) any release of
part of the Mortgaged Property from the lien of the related Mortgage, whether by
partial condemnation, sale or otherwise, which are not released to the Mortgagor
in accordance with (i) applicable law, (ii) Accepted Servicing Practices and
(iii) the HELOC Servicing Agreement or HELOC Subservicing Agreement, as
applicable.

         RELIEF ACT: The Servicemember's Civil Relief Act.

         RELIEF ACT SHORTFALL: As to any Payment Date and any Mortgage Loan
(other than a Mortgage Loan relating to an REO Property), any shortfalls
relating to the Relief Act or similar legislation or regulations.

         REMITTANCE REPORT: The report prepared by the HELOC Master Servicer,
HELOC Subservicer or RMBS Master Servicer, as applicable, pursuant to Section
4.01 of the HELOC Servicing Agreement, HELOC Subservicing Agreement or RMBS
Servicing Agreement.

         REO ACQUISITION: The acquisition by the HELOC Master Servicer, HELOC
Subservicer or RMBS Master Servicer, as applicable, on behalf of the Issuer for
the benefit of the Noteholders and the Insurer of any REO Property pursuant to
Section 3.13 of the HELOC Servicing Agreement, HELOC Subservicing Agreement or
RMBS Servicing Agreement.


                                       46
<PAGE>


         REO DISPOSITION: As to any REO Property, a determination by the HELOC
Master Servicer, HELOC Subservicer or RMBS Master Servicer, as applicable, that
it has received substantially all Insurance Proceeds, Liquidation Proceeds, REO
Proceeds and other payments and recoveries (including proceeds of a final sale)
which the HELOC Master Servicer, HELOC Subservicer or RMBS Master Servicer, as
applicable, expects to be finally recoverable from the sale or other disposition
of the REO Property.

         REO IMPUTED INTEREST: As to any REO Property, for any period, an amount
equivalent to interest (at the Net Mortgage Rate that would have been applicable
to the related Mortgage Loan had it been Outstanding) on the unpaid principal
balance of the Mortgage Loan as of the date of acquisition thereof for such
period as such balance is reduced pursuant to Section 3.13 of the HELOC
Servicing Agreement, HELOC Subservicing Agreement or RMBS Servicing Agreement,
as applicable, by any income from the REO Property treated as a recovery of
principal.

         REO PROCEEDS: Proceeds, net of expenses, received in respect of any REO
Property (including, without limitation, proceeds from the rental of the related
Mortgaged Property) which proceeds are required to be deposited into the related
Collection Account only upon the related REO Disposition.

         REO PROPERTY: A Mortgaged Property that is acquired by the Trust by
foreclosure or by deed in lieu of foreclosure.

         REPURCHASE PRICE: With respect to any Mortgage Loan required to be
repurchased by the Seller on any date pursuant to the Mortgage Loan Purchase
Agreement or the HELOC Servicing Agreement or purchased by the RMBS Master
Servicer pursuant to the RMBS Servicing Agreement, an amount equal to the sum,
without duplication, of (i) 100% of the Stated Principal Balance thereof
(without reduction for any amounts charged off) and (ii) unpaid accrued interest
at the Mortgage Rate on the outstanding principal balance thereof from the Due
Date to which interest was last paid by the Mortgagor to the first day of the
month following the month of purchase plus (iii) the amount of unreimbursed
Monthly Advances or unreimbursed Servicing Advances made with respect to such
Mortgage Loan plus (iv) any other amounts owed to the RMBS Master Servicer or
HELOC Master Servicer, as applicable, pursuant to Section 3.07 of the RMBS
Servicing Agreement or HELOC Servicing Agreement and not included in clause
(iii) of this definition plus (v) any costs and damages incurred by the trust in
connection with any violation by such loan of any predatory-lending law.

         REPURCHASE PROCEEDS: The Repurchase Price in connection with any
repurchase of a Mortgage Loan by the Seller and any cash deposit in connection
with the substitution of a Mortgage Loan.

         RESERVE INTEREST RATE: With respect to any Interest Determination Date,
the rate per annum that the Indenture Trustee determines to be either (i) the
arithmetic mean (rounded upwards if necessary to the nearest whole multiple of
0.0625%) of the one-month, six-month or one-year (as applicable) United States
dollar lending rates which New York City banks selected by the Indenture Trustee
are quoting on the relevant Interest Determination Date to the principal London
offices of leading banks in the London interbank market or (ii) in the event
that the


                                       47
<PAGE>


Indenture Trustee can determine no such arithmetic mean, the lowest one-month,
six-month or one-year (as applicable) United States dollar lending rate which
New York City banks selected by the Indenture Trustee are quoting on such
Interest Determination Date to leading European banks.

         RESPONSIBLE OFFICER: With respect to the Indenture Trustee, (a) any
officer within the corporate trust department of the Indenture Trustee including
any vice president, assistant vice president, treasurer, assistant treasurer,
trust officer or any other officer of the Indenture Trustee who customarily
performs functions similar to those performed by the persons who at the time
shall be such officers, respectively, or to whom any corporate trust matter is
referred because of such person's knowledge of and familiarity with the
particular subject and (b) who shall have direct responsibility for the
administration of the applicable Agreement.

         RMBS MASTER SERVICER: American Home Mortgage Servicing, Inc., a
Maryland corporation, and its successors and assigns.

         RMBS MASTER SERVICER REMITTANCE DATE: The twenty-second (22nd) calendar
day of each month or, if such twenty-second (22nd) day is not a Business Day,
then the Business Day immediately preceding such twenty-second (22nd) day of the
month.

         RMBS MASTER SERVICING FEE: With respect to each Mortgage Loan that is
not a HELOC Mortgage Loan and any Payment Date, the fee payable monthly to the
RMBS Master Servicer in respect of master servicing compensation that accrues at
an annual rate equal to the RMBS Master Servicing Fee Rate multiplied by the
Stated Principal Balance of such Mortgage Loan as of the related Due Date in the
related Due Period.

         RMBS MASTER SERVICING FEE RATE: With respect to any Mortgage Loan that
is not a HELOC Mortgage Loan with an original principal balance of less than or
equal to $333,700, 0.375% per annum, with respect to each other Mortgage Loan
that is not a HELOC Mortgage Loan 0.250% per annum.

         RMBS MORTGAGE LOAN SCHEDULE: The schedule of Mortgage Loans attached as
Exhibit A to the RMBS Servicing Agreement.

         RMBS SERVICING AGREEMENT: The Servicing Agreement dated as of December
21, 2004, among the RMBS Master Servicer, the Seller, the Issuer and the
Indenture Trustee.

         ROLLING THREE MONTH DELINQUENCY RATE: With respect to any Payment Date,
the average of the Delinquency Rates for each of the three (or one and two, in
the case of the first and second Payment Dates, respectively) immediately
preceding months.

         SECURITIES ACT: The Securities Act of 1933, as amended, and the rules
and regulations promulgated thereunder.

         SECURITIES INTERMEDIARY: The Bank of New York, or its successors and
assigns.

         SECURITY: Any of the Certificates or Notes.


                                       48
<PAGE>


         SECURITYHOLDER or HOLDER: Any Noteholder or a Certificateholder.

         SECURITY INSTRUMENT: A written instrument creating a valid first lien
on a Mortgaged Property securing a Mortgage Note, which may be any applicable
form of mortgage, deed of trust, deed to secure debt or security deed, including
any riders or addenda thereto.

         SELLER: American Home Mortgage Acceptance, Inc., a Maryland
corporation, and its successors and assigns.

         SENIOR LIEN: With respect to any HELOC Mortgage Loan that is a second
priority lien, the mortgage loan or mortgage loans relating to the corresponding
Mortgaged Property having priority senior to that of such HELOC Mortgage Loan.

         SERVICER TERMINATION EVENT:

         (a)      The occurrence of a draw on the Insurance Policy which remains
unreimbursed for a period of 90 days.

         (b)      Cumulative losses, as a percentage of the Group VII Cut-off
Date Balance, exceed the following:

         Months            Percentage

         0   - 24          1.00%

         25 - 36           2.00%

         37 - 48           3.00%

         49 - 60           4.00%

         61+               5.00%

         (c)      American Home Mortgage Investment Corp. fails to have a
Tangible Net Worth of at least $530 million.

         (d)      The occurrence of a Servicing Default as described in Section
6.01 of the HELOC Subservicing Agreement.

         SERVICING ACCOUNT: The separate trust account created and maintained by
the HELOC Master Servicer, RMBS Master Servicer and HELOC Subservicer, as
applicable, or each Subservicer with respect to the Mortgage Loans or REO
Property, which shall be an Eligible Account, for collection of taxes,
assessments, insurance premiums and comparable items as described in Section
3.08 of the HELOC Servicing Agreement, RMBS Servicing Agreement and HELOC
Subservicing Agreement.

         SERVICING ADVANCES: All customary, reasonable and necessary "out of
pocket" costs and expenses incurred in connection with a default, delinquency or
other unanticipated event in the performance by the HELOC Master Servicer, HELOC
Subservicer or RMBS Master Servicer, as


                                       49
<PAGE>


applicable, or any Subservicer of its servicing obligations, including, without
duplication, but not limited to, the cost of (i) the preservation, restoration
and protection of a Mortgaged Property, (ii) any enforcement or judicial
proceedings, including foreclosures and any expenses incurred in relation to any
such proceedings that result from the Mortgage Loan being registered on the
MERS(R) System, (iii) the management and liquidation of any REO Property, (iv)
compliance with the obligations under Sections 3.10, 3.11, 3.13 of the or RMBS
Servicing Agreement or Sections 3.11 and 3.13 of the HELOC Servicing Agreement
or of the HELOC Subservicing Agreement, as applicable, (v) covering any expenses
incurred by or on behalf of the HELOC Master Servicer, the HELOC Subservicer or
the RMBS Master Servicer, as applicable, in connection with obtaining Insurance
Proceeds and (vi) that is applied to the restoration or repair of the related
Mortgaged Property.

         SERVICING AGREEMENT: Each of the HELOC Servicing Agreement and RMBS
Servicing Agreement, as applicable.

         SERVICING CERTIFICATE: A certificate completed and executed by a
Servicing Officer on behalf of the HELOC Master Servicer, HELOC Subservicer or
RMBS Master Servicer, as applicable, in accordance with Section 4.01 of the
HELOC Servicing Agreement, HELOC Subservicing Agreement or RMBS Servicing
Agreement.

         SERVICING DEFAULT: The meaning assigned in Section 6.01 of the HELOC
Servicing Agreement, HELOC Subservicing Agreement or RMBS Servicing Agreement,
as applicable.

         SERVICING OFFICER: Any officer of the HELOC Master Servicer, HELOC
Subservicer or RMBS Master Servicer, as applicable, involved in, or responsible
for, the administration and servicing of the Mortgage Loans whose name and
specimen signature appear on a list of servicing officers furnished to the
Indenture Trustee or the HELOC Master Servicer, as applicable, by the HELOC
Master Servicer, HELOC Subservicer or RMBS Master Servicer, as applicable, on
the Closing Date, as such list may be amended from time to time.

         SIX-MONTH LIBOR: With respect to any Accrual Period, the rate
determined by the Indenture Trustee on the related Interest Determination Date
on the basis of the London interbank offered rate for six-month United States
dollar deposits, as such rates appear on the Telerate Screen Page 3750, as of
11:00 a.m. (London time) on such Interest Determination Date.

         In the event that on any Interest Determination Date, Telerate Screen
Page 3750 fails to indicate the London interbank offered rate for six-month
United States dollar deposits, then Six-Month LIBOR for the related Accrual
Period will be established by the Indenture Trustee as follows:

         (i)      If on such Interest Determination Date two or more Reference
Banks provide such offered quotations, Six-Month LIBOR for the related Accrual
Period shall be the arithmetic mean of such offered quotations (rounded upwards
if necessary to the nearest whole multiple of 1/16%).

         (ii)     If on such Interest Determination Date fewer than two
Reference Banks provide such offered quotations, Six-Month LIBOR for the related
Accrual Period shall be the higher of


                                       50
<PAGE>


(i)      Six-Month LIBOR as determined on the previous Interest Determination
Date and (ii) the Reserve Interest Rate.

         (iii)    If no such quotations can be obtained and no Reference Bank
rate is available, Six-Month LIBOR will be the Six-Month LIBOR rate applicable
to the preceding Accrual Period.

         The establishment of Six-Month LIBOR on each Interest Determination
Date by the Indenture Trustee and the Indenture Trustee's calculation of the
applicable Note Interest Rate applicable for the related Accrual Period shall
(in the absence of manifest error) be final and binding.

         STANDARD & POOR'S: Standard & Poor's, a division of The McGraw-Hill
Companies, Inc., or its successor in interest.

         STATED PRINCIPAL BALANCE: With respect to any Mortgage Loan that is not
a HELOC Mortgage Loan or related REO Property as of any date of determination,
(i) the principal balance of the Mortgage Loan outstanding as of the Cut-off
Date, after application of all scheduled Monthly Payments due on or before such
date, whether or not received, minus (ii) the sum of (a) the principal portion
of the Monthly Payments due with respect to such Mortgage Loan or REO Property
during each Due Period ending prior to the most recent Payment Date which were
received or with respect to which an Monthly Advance was made, (b) all Principal
Prepayments with respect to such Mortgage Loan or REO Property, and all
Insurance Proceeds, Liquidation Proceeds and REO Proceeds to the extent applied
by the RMBS Master Servicer as recoveries of principal in accordance with
Section 3.13 of the RMBS Servicing Agreement with respect to such Mortgage Loan
or REO Property, which were distributed pursuant to Section 3.05 of the
Indenture on any previous Payment Date, and (c) the principal portion of any
Realized Loss with respect thereto allocated pursuant to Section 3.31 of the
Indenture for any previous Payment Date; provided that the Stated Principal
Balance of any Liquidated Mortgage Loan is zero. With respect to any Mortgage
Loan that is a HELOC Mortgage Loan, the principal balance of the HELOC Mortgage
Loan as of the Cut-off Date, plus any Additional Balances in respect of such
HELOC Mortgage Loan minus all collections credited against the principal balance
of such HELOC Mortgage Loan in accordance with the related Mortgage Note and
minus all prior related Charge-Off Amounts. The Stated Principal Balance of any
Liquidated HELOC Mortgage Loan is zero.

         STATUTORY TRUST STATUTE: Chapter 38 of Title 12 of the Delaware Code,
12 DEL. Code ss.ss.3801 ET SEQ., as the same may be amended from time to time.

         STEPDOWN DATE: With respect to the Group I, Group II, Group III, Group
IV and Group V Loans, the later to occur of (x) the Payment Date occurring in
December 2007 and (y) the first Payment Date for which the Credit Enhancement
Percentage for the Class I-A, Class II-A, Class III-A, Class IV-A and Class V-A
Notes (calculated for this purposes only after taking into account distributions
of principal on the Group I, Group II, Group III, Group IV and Group V Loans,
but prior to any payment of the Class A Principal Distibution Amount for these
Notes then entitled to payments of principal on that Payment Date) is greater
than or equal to approximately 14.00%. With respect to the Class VII-A Notes and
Loan Group VII, the later to


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occur of (x) the Payment Date occurring in July 2007 and (y) the Payment Date on
which the aggregate Investor Principal Distribution Amount actually distributed
to the holders of the Class VII-A Notes equals or exceeds one-half of the Group
VII Cut-off Date Balance.

         STEP-UP DATE: With respect to the Class I-A, Class II-A, Class III-A,
Class IV-A, Class V-A and Class M Notes, the Payment Date occurring after the
first Payment Date for which the aggregate Stated Principal Balance of the Group
I, Group II, Group III, Group IV and Group V Loans as of the end of the related
Due Period and the related Pre-Funded Amount has been reduced to 10% or less of
the sum of the Group I, Group II, Group III, Group IV and Group V Cut-off Date
Balances. With respect to the Class VI-A, Class VI-M and Class VI-B Notes, the
Payment Date occurring after the first Payment Date for which the aggregate
Stated Principal Balance of the Group VI Loans as of the end of the related Due
Period and the related Pre-Funded Amount has been reduced to 10% or less of the
Group VI Cut-off Date Balance.

         SUBSERVICER: Any Person with whom the HELOC Master Servicer, HELOC
Subservicer or RMBS Master Servicer, as applicable, has entered into a
Subservicing Agreement as a Subservicer.

         SUBSERVICING ACCOUNT: An Eligible Account established or maintained by
a Subservicer as provided for in Section 3.06(e) of the HELOC Servicing
Agreement, RMBS Servicing Agreement and HELOC Subservicing Agreement.

         SUBSERVICING AGREEMENT: The written contract between the HELOC Master
Servicer, HELOC Subservicer or RMBS Master Servicer, as applicable, and any
Subservicer relating to servicing and administration of certain Mortgage Loans
as provided in Section 3.02 of the HELOC Servicing Agreement, RMBS Servicing
Agreement and HELOC Subservicing Agreement.

         SUBSEQUENT RECOVERIES: Any Liquidation Proceeds received after the
final liquidation of a Mortgage Loan.

         SUBSEQUENT CUT-OFF DATE: With respect to any Subsequent Mortgage Loan
or Subsequent HELOC Mortgage Loans, the date, as designated by the Depositor,
that is the later of (i) the first day of the month in which the related
Subsequent Transfer Date occurs and (ii) the origination date of such Subsequent
Mortgage Loan or Subsequent HELOC Mortgage Loan, as the cut-off date with
respect to the related Subsequent Mortgage Loan or Subsequent HELOC Mortgage
Loan.

         SUBSTITUTION ADJUSTMENT AMOUNT: With respect to any Eligible Substitute
Mortgage Loan, the amount as defined in Section 2.03 of the HELOC Servicing
Agreement, HELOC Subservicing Agreement or RMBS Servicing Agreement, as
applicable.

         SUBSEQUENT MORTGAGE LOAN PURCHASE AGREEMENT: Any of the Group I
Subsequent Mortgage Loan Purchase Agreement, Group II Subsequent Mortgage Loan
Purchase Agreement, Group III Subsequent Mortgage Loan Purchase Agreement, Group
IV Subsequent Mortgage Loan Purchase Agreement, Group V Subsequent Mortgage Loan
Purchase Agreement, Group VI


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<PAGE>


Subsequent Mortgage Loan Purchase Agreement and Group VII Subsequent Mortgage
Loan Purchase Agreement.

         SUBSEQUENT TRANSFER DATE: With respect to any Group I, Group II, Group
III, Group IV, Group V, Group VI and Group VII Mortgage Loan, the applicable
date upon which such Mortgage Loan was purchased from the Seller with the
amounts on deposit in the related Pre-Funding Account.

         SWAP AGREEMENT: Each of the Group II Swap Agreement and Group III Swap
Agreement forms of which are attached as Exhibit E to the Indenture.

         SWAP AGREEMENT COUNTERPARTY: Bear Stearns Financial Products, Inc.

         TANGIBLE NET WORTH: Net Worth, less the sum of the following (without
duplication): (a) any other assets of American Home Mortgage Investment Corp.
and its consolidated subsidiaries that would be treated as intangibles under
GAAP including, without limitation, any write-up of assets (other than
adjustments to market value to the extent required under GAAP with respect to
excess servicing, residual interests in offerings of asset-backed securities and
asset-backed securities that are interest-only securities), good-will, research
and development costs, trade-marks, trade names, copyrights, patents and
unamortized debt discount and expenses and (b) loans or other extensions of
credit to officers of American Home Mortgage Investment Corp. or its
consolidated subsidiaries other than Mortgage Loans made to such Persons in the
ordinary course of business.

         TELERATE SCREEN PAGE 3750: The display designated as page 3750 on the
Telerate Service (or such other page as may replace page 3750 on that service
for the purpose of displaying London interbank offered rates of major banks).

         TRANSFER DATE: As defined in Section 3.20 of the HELOC Servicing
Agreement.

         TRANSFER NOTICE DATE: As defined in Section 3.20 of the HELOC Servicing
Agreement.

         TRANSFEROR: The owner of the Transferor Interest as shown on the
Transferor Interest Register.

         TRANSFEROR INTEREST: Represents the pari passu interest in the Group
VII HELOC Mortgage Loans equal to the cumulative amount of draws on the HELOC
Mortgage Loans beginning with the Rapid Amortization Period.

         TRANSFEROR INTEREST PRINCIPAL BALANCE: With respect to any Payment
Date, the amount by which the Pool Principal Balance exceeds the Invested
Amount, in each case at the end of the related Due Period.

         TRANSFEROR PERCENTAGE: For any Payment Date, 100% minus the Floating
Allocation Percentage for such Payment Date.

         TREASURY REGULATIONS: Regulations, including proposed or temporary
Regulations, promulgated under the Code. References herein to specific
provisions of proposed or temporary regulations shall include analogous
provisions of final Treasury Regulations or other successor Treasury
Regulations.


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<PAGE>


         TRIGGER EVENT: With respect to Loan Group I, Loan Group II, Loan Group
III, Loan Group IV and Loan Group V, a Trigger Event is in effect with respect
to any Payment Date on and after the related Stepdown Date if either

         1.       the Rolling Three Month Delinquency Rate for the Group I,
Group II, Group III, Group IV and Group V Loans as of the close of business on
the last day of the preceding calendar month exceeds 40% of the aggregate Note
Principal Balance of the Class M Notes plus the aggregate Overcollateralized
Amount for Loan Group I, Loan Group II, Loan Group III, Loan Group IV and Loan
Group V, divided by the aggregate Stated Principal Balance of the Group I, Group
II, Group III, Group IV and Group V Loans; or

         2.       the cumulative amount of Realized Losses incurred on the Group
I, Group II, Group III, Group IV and Group V Loans from the Cut-off Date through
the end of the calendar month immediately preceding such Payment Date exceeds
the applicable percentage set forth below of the aggregate Stated Principal
Balance of the Group I, Group II, Group III, Group IV and Group V Loans as of
the Cut-off Date:

                  January 2008 to December 2008                1.75%
                  January 2009 and thereafter............      2.00%

With respect to Loan Group VII, a Trigger Event is in effect with respect to any
Payment Date on and after the Stepdown Date if either

         1.       the average of the Group VII Excess Spread Percentage for that
Payment Date and the prior two Payment Dates is less than or equal to 1.75% per
annum; or

         2.       the cumulative amount of Charge-Off Amounts incurred on the
Group VII Loans from the Cut-off Date through the end of the calendar month
immediately preceding such Payment Date exceeds the applicable percentage set
forth below of the aggregate Stated Principal Balance of the Group VII Loans as
of the Cut-off Date:

                  July 2007 to December 2007.............      2.00%
                  January 2008 to December 2008                2.50%
                  January 2009 and thereafter............      3.00%

         TRUST: The American Home Mortgage Investment Trust 2004-4 to be created
pursuant to the Trust Agreement.

         TRUST AGREEMENT: The Amended and Restated Trust Agreement dated as of
December 21, 2004, among the Owner Trustee, the Depositor and The Bank of New
York, as Certificate Registrar and Certificate Paying Agent, relating to the
Trust.

         TRUST ESTATE: The meaning specified in the Granting Clause of the
Indenture.

         TRUST INDENTURE ACT OR TIA: The Trust Indenture Act of 1939, as amended
from time to time, as in effect on any relevant date.


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<PAGE>


         UCC: The Uniform Commercial Code, as amended from
time to time, as in effect in any specified jurisdiction.

         UNDERWRITERS: Bear, Stearns & Co. Inc., Lehman Brothers Inc., Citigroup
Global Markets, Inc., UBS Securities LLC or their successors.

         UNINSURED CAUSE: Any cause of damage to property subject to a Mortgage
that the complete restoration of such property is not fully reimbursable by the
hazard insurance policies.

         UNPAID INTEREST SHORTFALL: For each Class of Notes and any Payment
Date, such Notes' pro rata share, based on the amount of Accrued Note Interest
otherwise payable on such Note on such Payment Date, of (a) any Prepayment
Interest Shortfalls, to the extent not covered by Compensating Interest, and (b)
any Relief Act Shortfalls, in each case to the extent incurred with respect to
the related Mortgage Loans.










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