Document:

<PAGE>   1

                                                                     EXHIBIT 4.1

                          SECOND SUPPLEMENTAL INDENTURE

     SECOND SUPPLEMENTAL INDENTURE, dated as of February 28, 2001 (this
"Supplement"), between International Lease Finance Corporation, a corporation
duly organized and existing under the laws of the State of California
(hereinafter called the "Company"), and U.S. Bank Trust, National Association,
as Trustee (hereinafter called the "Trustee").

                             RECITALS OF THE COMPANY

     The Company has heretofore executed and delivered an Indenture, dated as of
November 1, 1991, as amended (hereinafter called the "Indenture") with the
Trustee, as successor to Continental Bank, National Association providing, among
other things, for the issuance from time to time of the Company's unsecured
debentures, notes or other evidences of indebtedness in one or more series.

     Pursuant to the terms of the Indenture, an Officers' Certificate dated May
21, 1997 (the "Officers' Certificate") and instructions from a Designated Person
of the Company in connection with the Notes (as defined below), Medium-Term
Notes, Series I, due March 1, 2006 in the aggregate principal amount of
$50,000,000 (the "Notes') were issued on May 30, 1997.

     Pursuant to Section 902 of the Indenture, the Holders of the Notes have
consented and agreed to certain changes to the terms of the Notes.

     It is deemed advisable and appropriate that the terms of the Notes be
amended to reflect the changes consented and agreed to by the Holders of the
Notes.

     All things necessary to make this Supplement a valid agreement of the
Company, in accordance with its terms, have been done.

                   NOW, THEREFORE, THIS SUPPLEMENT WITNESSETH:

     For and in consideration of the premises, it is mutually covenanted and
agreed, for the equal and proportionate benefit of the Holders of the Notes
only, as follows:

     1. The terms used in this Supplement and defined in the Indenture,
Officers' Certificate or Instructions shall have the meanings assigned to them
in the Indenture, Officers' Certificate or Instructions, as the case may be.

<PAGE>   2

     2.   The terms of the Notes are hereby amended as follows:

          (i) The Stated Maturity shall be March 1, 2008.

          (ii) Interest on the Notes accruing from October 15, 2000 to March 1,
     2001 will be paid on March 1, 2001 to the Holders of the Notes on February
     15, 2001.

          (iii) Interest on the Notes from and including March 1, 2001 to but
     excluding March 3, 2003, shall accrue at the fixed rate of 6.85% per annum,
     payable semi-annually on each April 15 and October 15, and on March 3,
     2003, on the basis of a 360-day year of twelve 30-day months, without
     adjustment for Interest Payment Dates that are not Business Days. Interest
     on the Notes will be payable to the persons in whose names the Notes are
     registered on the April 1 or October 1 (whether or not a Business Day)
     immediately preceding the Applicable Interest Payment Date.

          (iv) The Additional Terms of the Notes shall be amended in their
     entirety to read as set forth in Annex A hereto.

     3. The Trustee assumes no duties, responsibilities or liabilities by reason
of this Supplement other than as set forth in the Indenture, and this Supplement
is executed and accepted by the Trustee subject to all terms and conditions of
its acceptance of the Trust under the Indenture, as fully as if said conditions
were hereby set forth at length. The Trustee assumes no responsibility or
liability for the recitals of the Company set forth in this Supplement.

     4. As amended and modified by this Supplement, the Indenture, Officers'
Certificate and Instructions are in all respects ratified and confirmed.

     5. This Supplement may be executed in any number of counterparts, each one
of which shall be an original, and all of which together constitute but one and
the same instrument.

     6. Trustee hereby accepts the modification of the Indenture, Officers'
Certificate and Instructions hereby effected and the trust in this Supplement
declared and provided, upon the terms and conditions hereinabove set forth.

                                      -2-

<PAGE>   3

     IN WITNESS WHEREOF, the parties hereto have caused this Supplement to be
executed, and their respective corporate seals to be hereunto affixed and
attested, all as of the day and year first above written.

                                            INTERNATIONAL LEASE
                                            FINANCE CORPORATION

                                            By: /s/ Pamela S. Hendry
                                                -------------------------------

Attest:

/s/ Elizabeth Pasinski
--------------------------

                                            U.S. BANK TRUST,
                                            NATIONAL ASSOCIATION

                                            By: /s/ P.J. Crowley
                                                ------------------------------
                                                P.J. Crowley
                                                Vice President

Attest:

/s/ Cynthia W. Brown
---------------------------

                                      -3-

<PAGE>   4

                                ADDITIONAL TERMS

PUT OPTION

     The Calculation Agent has the right to require the Company to repurchase
all (but not less than all) of the Notes on March 3, 2003 at a purchase price
equal to 100% of the principal amount thereof, plus accrued but unpaid interest
to but excluding March 3, 2003 (the "Redemption Price"), by delivering written
notice thereof to the Company on behalf of all (but not fewer than all) holders
of the Notes (the "Put Notice"). Such Put Notice shall be given no later than
9:00 a.m. (New York time) on February 24, 2003. The Calculation Agent shall give
the Put Notice if the holders of a majority in principal amount of the Notes
request the Calculation Agent to give the Put Notice, in which event the Put
Notice shall be binding on all Noteholders; the Calculation Agent shall not give
the Put Notice absent such request of the holders of a majority in principal
amount of the Notes. In the event the Put Notice is timely given, the Company
shall repurchase the Notes at the Redemption Price on March 3, 2003.

     IF REQUIRED BY THE CALCULATION AGENT, EACH HOLDER SHALL INDICATE ITS
ELECTION TO HAVE THE CALCULATION AGENT DELIVER THE PUT NOTICE TO THE COMPANY BY
DELIVERING WRITTEN NOTICE OF SUCH ELECTION TO THE CALCULATION AGENT BY NO LATER
THAN 12:00 NOON (NEW YORK TIME) ON FEBRUARY 20, 2003.

RESET OF INTEREST RATE FOR SECOND FIXED RATE PERIOD

     If the Calculation Agent has not delivered the Put Notice to the Company in
accordance with the terms set forth under "Put Option" above, the Company and
the Calculation Agent, on February 24, 2003, shall undertake the following
actions to calculate the fixed rate of interest to be paid on the Notes during
the period from and including March 3, 2003 to the Maturity Date. All references
to specific hours are references to prevailing New York time. Each notice, bid
or offer (including those given by the Reference Dealers [as defined below])
shall be given telephonically and shall be confirmed as soon as possible by
facsimile to each of the Calculation Agent and the Company. The times set forth
below are guidelines for action by the Company and the Calculation Agent, and
each shall use its best efforts to adhere to such times. The Company shall use
its best efforts to cause the Reference Dealers to take all actions contemplated
below in as timely a manner as possible.

     A HOLDER SHALL INDICATE ITS ELECTION TO SELL ITS NOTE TO, AND PURCHASE
DESIGNATED TREASURY BONDS FROM, THE FINAL DEALER OR FINAL DEALERS (AS DEFINED
BELOW) IN ACCORDANCE WITH THE TERMS SET FORTH IN PARAGRAPH (F) BELOW BY
NOTIFYING THE CALCULATION AGENT OF SUCH ELECTION BY NO LATER THAN 9:35 A.M. (NEW
YORK TIME) ON FEBRUARY 24, 2003. IF THE CALCULATION AGENT HAS NOT RECEIVED
WRITTEN ELECTION FOR THE SALE OF AT LEAST $25,000,000 AGGREGATE PRINCIPAL AMOUNT
OF THE NOTES TO THE FINAL DEALER OR FINAL DEALERS, THE CALCULATION AGENT SHALL
SELECT PRO RATA FROM ALL HOLDERS NOTES IN A PRINCIPAL AMOUNT THAT, WHEN
AGGREGATED WITH THE PRINCIPAL AMOUNT OF NOTES FOR WHICH THE CALCULATION AGENT
HAS RECEIVED A WRITTEN ELECTION TO SELL, WILL TOTAL $25,000,000, AND SHALL
IMMEDIATELY NOTIFY SUCH HOLDERS OF SUCH SELECTION. THE HOLDERS OF SUCH RANDOMLY
SELECTED NOTES SHALL SELL THEIR NOTES TO, AND PURCHASE DESIGNATED TREASURY BONDS
FROM, THE FINAL DEALER OR FINAL DEALERS IN ACCORDANCE WITH THE TERMS SET FORTH
IN PARAGRAPH (E) BELOW.

<PAGE>   5

     (a) At 9:00 a.m., the Company shall provide to the Calculation Agent the
     names of four financial institutions that deal in the Company's debt
     securities and have agreed to participate as reference dealers in
     accordance with the terms set forth below (the "Reference Dealers") and,
     for each Reference Dealer, the name of and telephone and facsimile numbers
     for one individual who will represent such Reference Dealer.

     (b) At 9:15 a.m., the Calculation Agent shall:

          (i) determine and provide to the Company the 5-year Treasury bond
          yield determined at or about such time (the "Designated Treasury
          Yield") based on an issue of 5-year Treasury bonds chosen by the
          Calculation Agent (the "Designated Treasury Bonds");

          (ii) calculate and provide to the Company the "Premium", which shall
          equal the present value (expressed as a percentage rounded to four
          decimal places) of the Treasury Rate Difference applied over the 10
          semi-annual periods from March 3, 2003 to the Maturity Date,
          discounted at the Discount Rate divided by two, where:

               "Treasury Rate Difference" means the difference between 6.585%
          (the "Initial Treasury Yield") minus the Designated Treasury Yield;
          and

               "Discount Rate" means the sum of the Designated Treasury Yield
          plus 0.50%; and

          (iii) provide to the Company the aggregate principal amount of the
          Designated Treasury Bonds that the Holders will purchase (the "Hedge
          Amount") in the event that all of the Notes are sold to one or more of
          the Reference Dealers in accordance with paragraph (e) below.

     (c) The Calculation Agent immediately thereafter shall contact each of the
     Reference Dealers and request that each Reference Dealer provide to the
     Calculation Agent the following firm bid and firm offer for the benefit of
     the Holders (which bid and offer shall remain firm for 15 minutes):

          (i) a firm bid (on an all-in basis), expressed as a spread to the
          Designated Treasury Bonds (using, for such purposes, the Designated
          Treasury Yield), at which such Reference Dealer would purchase any
          Notes offered (up to Notes in a principal amount equal to $50,000,000,
          provided that such Reference Dealer shall not be obligated to purchase
          Notes in a principal amount less that $25,000,000) at a price equal to
          100% plus the Premium for settlement on the Redemption Date (the
          lowest of such spreads, the "Spread"); and

          (ii) a firm offer (on an all-in basis) to sell Designated Treasury
          Bonds in a principal amount equal to the Hedge Amount at a yield equal
          to the Designated Treasury Yield for settlement on the Redemption
          Date.

     (d) At 9:30 a.m., the following shall occur following receipt of the bids
     and offers requested in paragraph (c) above:

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<PAGE>   6

          (i) the Calculation Agent shall calculate and provide to the Company
          the "Adjusted Coupon", which shall be the fixed rate of interest on
          the Notes required to produce a yield on the Notes equal to the sum of
          the Designated Treasury Yield and the Spread given a purchase price of
          100% plus the Premium;

          (ii) the Interest Rate on the Notes shall be adjusted and shall equal,
          effective from and including March 3, 2003 to the Maturity Date, the
          Adjusted Coupon; and

          (iii) the Reference Dealer providing the Spread shall be deemed the
          "Final Dealer"; provided that if two or more Reference Dealers shall
          have quoted such Spread, the Company shall determine which of such
          Reference Dealers shall be the Final Dealer or the Final Dealers (and,
          in the latter case, the allocation to be made between them).

     (e) The Holders:

          (i) shall sell Notes to the Final Dealer or Final Dealers in a
          principal amount which shall be not less than $25,000,000 nor more
          than $50,000,000 at a price equal to 100% plus the Premium; and

          (ii) shall purchase Designated Treasury Bonds from the Final Dealer or
          Final Dealers in a principal amount equal to the Hedge Amount
          (adjusted pro rata based on the amount of Notes sold in the event that
          less than $50,000,000 principal amount is sold), at a price based on
          the Designated Treasury Yield, in each case for settlement on the
          Redemption Date and, in the case of more than one Final Dealer,
          according to the allocation designated by the Company under paragraph
          (d)(iii) above.

          If the Calculation Agent determines that (i) a Market Disruption Event
(as defined below) has occurred or (ii) two or more of the Reference Dealers
have failed to provide indicative or firm bids or offers in a timely manner
substantially as provided above, the steps contemplated above shall be delayed
until the next trading day on which there is no Market Disruption Event and no
such failure by two or more Reference Dealers. "Market Disruption Event" shall
mean any of the following: (i) a suspension or material limitation in trading in
securities generally on the New York Stock Exchange or the establishment of
minimum prices on such exchange: (ii) a general moratorium on commercial banking
activities declared by either federal or New York State authorities; (iii) any
material adverse change in the existing financial, political or economic
conditions in the United States or America or elsewhere; (iv) an outbreak or
escalation of major hostilities involving the United States of America or the
declaration of a national emergency or war by the United States of America; or
(v) any material disruption of the U.S. government securities market, U.S.
corporate bond market and/or U.S. federal wire system.

                                       3<PAGE>   1
                                                                   EXHIBIT 10.12

                                 3/01 AMENDMENT
                             (THE EIGHTH AMENDMENT)

                           DATED AS OF MARCH 30, 2001

                                       TO

                         REPURCHASE FINANCING AGREEMENT
                           DATED AS OF OCTOBER 9, 1996

                                      AMONG

                            ASSOCIATES FUNDING, INC.
                                  ("BORROWER")

                             RYLAND MORTGAGE COMPANY
                                  ("GUARANTOR")

                            THE CHASE MANHATTAN BANK
                          ("CHASE"), AS AGENT ("AGENT")

                                       AND

                                 CERTAIN LENDERS

         $45,000,000 (ORIGINALLY $100,000,000) REVOLVING CREDIT FACILITY

                                       16
<PAGE>   2

                                      INDEX

<TABLE>
<S>                                                                       <C>
"3/01 AMENDMENT"...........................................................1
"AGENT"....................................................................1
"BORROWER".................................................................1
"CHASE"....................................................................1
"COMPANIES"................................................................1
"GUARANTOR"................................................................1
"LENDERS"..................................................................1
"LOAN AGREEMENT"...........................................................1
"STATED TERMINATION DATE"..................................................1
</TABLE>

                                       17
<PAGE>   3

                                TABLE OF CONTENTS

<TABLE>
<S>                                                           <C>
               Preamble........................................1
               Recitals........................................1
               Amendments......................................1
               1. Amendment of Section 1.1.....................1
               2. Conditions Precedent.........................1
               3. Payment Terms................................2
               4. Representations and Warranties...............2
               5. Ratification.................................2
               6. Miscellaneous................................2
</TABLE>

                                       18
<PAGE>   4

                                3/01 AMENDMENT TO
                         REPURCHASE FINANCING AGREEMENT

                                    PREAMBLE

        THIS 3/01 AMENDMENT TO REPURCHASE FINANCING AGREEMENT (the "3/01
AMENDMENT") entered into as of March 30, 2001, among ASSOCIATES FUNDING, INC., a
Delaware corporation ("BORROWER"), RYLAND MORTGAGE COMPANY, an Ohio corporation
("GUARANTOR"), THE CHASE MANHATTAN BANK ("CHASE"), a New York banking
corporation and successor by merger to Chase Bank of Texas, National
Association, a national banking association formerly named Texas Commerce Bank
National Association, as a lender and as agent for the lenders from time to time
party thereto (in that capacity, the "AGENT"), and Chase, as currently the only
lender party to the Loan Agreement (defined below) to amend (for the eighth
time) the Loan Agreement, recites and provides as follows:

                                    RECITALS

        Borrower and Guarantor (the "COMPANIES") and Chase, as Agent and the
only lender (the lenders thereunder being called the "LENDERS"), are party to
the Repurchase Financing Agreement dated as of October 9, 1996 (as amended
through the date of this amendment, the "LOAN AGREEMENT") providing for
revolving credit loans of (originally) up to $100 million of principal lent and
outstanding on any day during the term of the Loan Agreement, and previously
amended to, among other things, reduce such limit to $35 million and
subsequently (by the 9/00 Amendment to Repurchase Financing Agreement dated as
of September 1, 2000) to increase it back up to $45 million. Terms defined in
the Loan Agreement have the same meanings when used, unless otherwise defined,
in this amendment. This amendment is for the purpose of extending the Stated
Termination Date to March 29, 2002 and confirming and continuing existing
agreements between the parties for accrual and payment of a facility fee.
Accordingly, for valuable and acknowledged consideration, the parties to this
amendment agree as follows:

                                   AMENDMENTS

                          1. AMENDMENT OF SECTION 1.1.

        SECTION 1.1 is amended by adding the following new definition, in
alphabetical order:

               "3/01 AMENDMENT" means the 3/01 Amendment to Repurchase Financing
        Agreement dated as of March 30, 2001, executed by the parties hereto and
        amending this Agreement (for the eighth time).

        SECTION 1.1 is further amended by amending the following definitions to
henceforth read as follows:

                 "STATED TERMINATION DATE" means March 29, 2002.

                            2. CONDITIONS PRECEDENT.

        The Companies agree to forthwith deliver to the Agent: (a) counterparts
of this amendment executed by all of the parties named below, (b) for any
officer of either Company signing below on behalf of that Company but not
included in certificates of incumbency for that Company delivered to the Agent
before this amendment, a certificate of the secretary or assistant secretary of
that Company about the due incumbency of that officer, and (c) if the Agent
reasonably requires, resolutions of the directors of any Company authorizing
this amendment

                                       19
<PAGE>   5

certified as accurate and complete by the secretary or assistant secretary of
the appropriate Company. This amendment shall become effective as of the
effective date of this amendment upon execution of this amendment by the
Borrower and the Agent.

                                3. PAYMENT TERMS.

        Section 3.18 of the Loan Agreement is hereby amended in its entirety to
henceforth read as follows:

               3.18 FEES. The following fee is not compensation for the use,
        detention, or forbearance of money, is in addition to and not in lieu of
        interest and expenses otherwise described in the Loan Papers, is
        non-refundable, to the extent lawful, bears interest if not paid when
        due at the Default Rate, and is calculated on the basis of actual days
        (including the first but excluding the last) elapsed over a year of 360
        days (or 365 or 366 days, as the case may be, if the calculation would
        otherwise result in exceeding the Maximum Amount and the payment were
        deemed to be interest notwithstanding the above provisions to the
        contrary), Borrower shall pay to The Chase Manhattan Bank a facility fee
        of twelve and one-half basis points (0.125%) per annum of the
        Commitment, due and payable in arrears on (A) April 1, 2001 (for the
        calendar quarter January-March 2001), (B) on the first day of each July,
        October, January and April thereafter (for the calendar quarter just
        ended) and (C) on the Termination Date (for the period from the date
        through which the last preceding payment was made to the Termination
        Date).

                       4. REPRESENTATIONS AND WARRANTIES.

        The Companies jointly and severally represent and warrant to Agent and
Lenders that, as of the date of this amendment and on the date of its execution
(a) the representations and warranties in the Loan Papers are true and correct
in all material respects except to the extent that (i) a representation or
warranty speaks to a specific date or (ii) the facts on which a representation
or warranty is based have changed by transactions or conditions contemplated or
permitted by the Loan Papers, and (b) no Default or Potential Default exists.

                                5. RATIFICATION.

        The Companies ratify and confirm (a) all provisions of the Loan Papers
as amended by this amendment and (b) that all guaranties, assurances and Liens
granted, conveyed, or assigned to Agent or Lenders under the Loan Papers --
including, but not limited to, the unconditional and irrevocable guaranty by the
Guarantor of (i) the prompt payment of the Obligation at maturity, by
acceleration or otherwise, and at all times after maturity in accordance with
the Loan Papers, and (ii) the prompt performance of and compliance with every
term, covenant, and condition of the Loan Papers when due, all as stated in
Section 4.1 of the Loan Agreement -- as they may have been revised, extended,
and amended, continue to guarantee, assure and secure the full payment and
performance of the Obligation (including, without limitation, all amounts
evidenced now or in the future by any note delivered under this amendment).

                                6. MISCELLANEOUS.

        All references in the Loan Papers to the "Loan Agreement" are to the
Loan Agreement as heretofore amended and as amended by this amendment. This
amendment is a "Loan Paper" referred to in the Loan Agreement, and the
provisions relating to Loan Papers in the Loan Agreement are incorporated in
this amendment by reference. Except as specifically amended and modified in this
amendment, the Loan Agreement is unchanged and continues in full force

                                       20
<PAGE>   6

and effect. This amendment may be executed in any number of counterparts with
the same effect as if all signatories had signed the same document. All
counterparts must be construed together to constitute one and the same
instrument. This amendment binds and benefits the Companies, Agent, Lenders and
their respective successors and permitted assigns. THIS AMENDMENT AND THE OTHER
LOAN PAPERS REPRESENT THE FINAL AGREEMENT BETWEEN THE PARTIES AND MAY NOT BE
CONTRADICTED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS, OR SUBSEQUENT ORAL
AGREEMENTS BY THE PARTIES. THERE ARE NO UNWRITTEN ORAL AGREEMENTS BETWEEN THE
PARTIES.

        The remainder of this page is intentionally blank; counterpart signature
pages follow.

                                       21
<PAGE>   7

        EXECUTED as of the day and year first stated above.

ASSOCIATES FUNDING, INC.                  RYLAND MORTGAGE COMPANY

By:     /s/ SUSAN CASS                    By:     /s/ SUSAN CASS
   ---------------------------------         ----------------------------------
(Name)  Susan Cass                        (Name)  Susan Cass
      ------------------------------            -------------------------------
(Title) Senior Vice President and         (Title) Senior Vice President and
       -----------------------------             ------------------------------
        Chief Financial Officer                   Chief Financial Officer
       -----------------------------             ------------------------------

THE CHASE MANHATTAN BANK, as Agent and as a Lender

By:     /s/ CYNTHIA E. CRITES
   ---------------------------------
(Name)  Cynthia E. Crites
      ------------------------------
(Title) Vice President
       -----------------------------

                                       22

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