Document:

EXHIBIT 4.12

                  Exchange and Registration Rights Agreement

                        Dated as of February 15, 2000

                                    among

                          American Trans Air, Inc.,

                          Wilmington Trust Company,

                  not in its individual capacity but solely
                               as Trustee under

                              American Trans Air
                     Pass Through Trust, Series 2000-1G-O

                              American Trans Air
                     Pass Through Trust, Series 2000-1C-O

                                     and

                          Salomon Smith Barney Inc.
                        Banc One Capital Markets, Inc.
                            Chase Securities Inc.
                      Morgan Stanley & Co. Incorporated

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                  EXCHANGE AND REGISTRATION RIGHTS AGREEMENT

          THIS EXCHANGE AND REGISTRATION RIGHTS AGREEMENT (this "Agreement")
is made and entered into as of February 15, 2000, among American Trans Air,
Inc., an Indiana corporation (the "Company"), Wilmington Trust Company, not
in its individual capacity but solely as trustee under each of the Original
Trusts (as defined below), Salomon Smith Barney Inc., Banc One Capital
Markets, Inc., Chase Securities Inc., and Morgan Stanley & Co. Incorporated
(collectively, the "Initial Purchasers").

          This Agreement is made pursuant to the Purchase Agreement dated
February 8, 2000 among the Company and the Initial Purchasers (the "Purchase
Agreement"), which provides that the Trustee will issue and sell $201,901,000
principal amount of the pass through certificates of the Class G Trust (as
defined below) and $36,740,000 principal amount of the pass through
certificates of the Class C Trust (as defined below) (the Class G Trust and
Class C Trust together, the "Original Trusts" and such pass through
certificates of the Original Trusts, together, the "Initial Certificates"),
in each case with Escrow Receipts (as defined below) attached thereto. On the
Transfer Date (as defined below), and after satisfaction of the conditions
set forth in the Pass Through Trust Agreements (as defined below), each of
the Original Trusts will transfer and assign all of its assets and rights to
a newly-created successor trust with substantially identical terms (together,
the "Successor Trusts") and the Initial Certificates will be deemed for all
purposes of the Original Trusts and the Successor Trusts to be certificates
representing fractional undivided interests in the Successor Trusts and their
respective trust properties. In order to induce the Initial Purchasers to
enter into the Purchase Agreement, the Company has agreed to provide to the
Initial Purchasers and their direct and indirect transferees the exchange and
registration rights set forth in this Agreement. The execution and delivery
of this Agreement is a condition to the closing under the Purchase Agreement.

          In consideration of the foregoing, the parties hereto agree as
follows:

          1. Definitions. The definitions set forth in this Agreement shall
apply equally to both singular and plural forms of the terms defined. As used
in this Agreement, the following capitalized defined terms shall have the
following meanings:

          "1933 Act" shall mean the Securities Act of 1933, as amended from
     time to time.

          "1934 Act" shall mean the Securities Exchange Act of 1934, as
     amended from time to time.

          "Agreement" shall have the meaning set forth in the preamble of
     this Agreement.

          "Business Day" shall mean any day on which the New York Stock
     Exchange, Inc. is open for trading and banks in The City of New York are
     open for business; references to "day" shall mean a calendar day.

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                                                                            2

          "Class C Trust" shall mean the American Trans Air Pass Through
     Trust, Series 2000-1C-O.

          "Class G Trust" shall mean the American Trans Air Pass Through
     Trust, Series 2000-1G-O.

          "Closing Date" shall mean the Closing Date as defined in the
     Purchase Agreement.

          "Company" shall have the meaning set forth in the preamble of this
     Agreement and shall include the Company's successors.

          "Deposit Agreement" shall have the meaning set forth in the
     Purchase Agreement.

          "DTC" shall mean the Depository Trust Company or any other
     depositary appointed by the Company; provided, however, that any such
     depositary must have an address in the Borough of Manhattan, in The City
     of New York.

          "Equipment Notes" shall mean the equipment notes that are the
     property of the Trusts.

          "Escrow Receipts" shall have the meaning set forth in the Purchase
     Agreement.

          "Exchange Certificates" shall mean the pass through certificates
     issued under the Pass Through Trust Agreements or the Successor Pass
     Through Trust Agreements, as the case may be, and otherwise containing
     terms identical in all material respects to the Initial Certificates
     (except that, with respect to the Exchange Certificates of each Trust,
     (i) interest thereon shall accrue as set forth in Section 2(a) hereof,
     (ii) the transfer restrictions thereon shall be eliminated, (iii)
     certain provisions relating to an increase in the stated rate of
     interest thereon shall be eliminated and (iv) such Exchange Certificates
     shall initially be available only in book-entry form), including having
     the benefit of the Policy (as defined in the Purchase Agreement), to be
     offered to Holders of Initial Certificates in exchange for Initial
     Certificates pursuant to the Exchange Offer.

          "Exchange Offer" shall mean the exchange offer by the Company of
     Exchange Certificates for Registrable Certificates pursuant to Section
     2(a) hereof.

          "Exchange Offer Registration" shall mean a registration under the
     1933 Act effected pursuant to Section 2(a) hereof.

          "Exchange Offer Registration Statement" shall mean a Registration
     Statement on Form S-4 (or, if applicable, on another appropriate form)
     filed with the SEC pursuant to Section 2(a) of this Agreement, and all
     amendments and supplements to such Registration Statement, in each case
     including the Prospectus contained therein, all exhibits thereto and all
     material incorporated by reference therein.

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                                                                            3

          "Holders" shall mean each of the Initial Purchasers, for so long as
     they own any Registrable Certificates, and each of their successors,
     assigns and direct and indirect transferees who become registered owners
     of Registrable Certificates.

          "Initial Certificates" has the meaning set forth in the preamble of
     this Agreement.

          "Initial Purchasers" shall have the meaning set forth in the
     preamble of this Agreement.

          "Majority Holders" shall mean the Holders of a majority of the
     aggregate principal amount of outstanding Registrable Certificates;
     provided that whenever the consent or approval of Holders of a specified
     percentage of Registrable Certificates is required hereunder,
     Registrable Certificates held by the Company or any of its "affiliates"
     (as such term is defined in Rule 405 under the 1933 Act) (other than the
     Initial Purchasers or subsequent holders of Registrable Certificates if
     such subsequent holders are deemed to be affiliates solely by reason of
     their holding of such Registrable Certificates) shall be disregarded in
     determining whether such consent or approval was given by the Holders of
     such required percentage or amount.

          "NASD" shall mean the National Association of Securities Dealers,
     Inc.

          "Original Trusts" shall have the meaning set forth in the preamble
     of this Agreement.

          "Participating Broker-Dealer" shall have the meaning set forth in
     Section 3(f) of this Agreement.

          "Pass Through Trust Agreements" shall mean each of the Pass Through
     Trust Agreements relating to the Initial Certificates between the
     Company and each Trustee, as may be amended from time to time in
     accordance with the terms thereof.

          "Person" shall mean an individual, partnership, corporation,
     limited liability company, trust or unincorporated organization, or a
     government or agency or political subdivision thereof.

          "Prospectus" shall mean the prospectus included in a Registration
     Statement, including any preliminary prospectus, and any such prospectus
     as amended or supplemented by any prospectus supplement, including a
     prospectus supplement with respect to the terms of the offering of any
     portion of the Registrable Certificates covered by a Shelf Registration
     Statement, and by all other amendments and supplements to a prospectus,
     including post-effective amendments, and in each case including all
     material incorporated by reference therein.

          "Purchase Agreement" shall have the meaning set forth in the
     preamble of this Agreement.

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                                                                            4

          "Registrable Certificates" shall mean the Initial Certificates;
     provided, however, that the Initial Certificates shall cease to be
     Registrable Certificates when (i) a Shelf Registration Statement with
     respect to such Initial Certificates shall have been declared effective
     under the 1933 Act and such Initial Certificates shall have been
     disposed of pursuant to such Shelf Registration Statement, (ii) such
     Initial Certificates shall have been sold to the public pursuant to Rule
     144 (or any similar provision then in force, but not Rule 144A) under
     the 1933 Act or may then be sold to the public pursuant to paragraph (k)
     of said Rule 144 (or any similar provision then in force) by Holders
     other than "affiliates" or former "affiliates" (as such term is defined
     in paragraph (a) of Rule 144) of the Company, (iii) such Initial
     Certificates shall have ceased to be outstanding or (iv) such Initial
     Certificates have been exchanged for Exchange Certificates upon
     consummation of the Exchange Offer.

          "Registration Default" shall have the meaning set forth in Section
     2(b) of this Agreement.

          "Registration Event" shall mean the declaration of the
     effectiveness by the SEC of an Exchange Offer Registration Statement or
     a Shelf Registration Statement.

          "Registration Expenses" shall mean any and all reasonable expenses
     incident to performance of or compliance by the Company and the Trustees
     with this Agreement, including without limitation: (i) all SEC, stock
     exchange or NASD registration and filing fees, (ii) all fees and
     expenses incurred in connection with compliance with state or other
     securities or blue sky laws and compliance with the rules of the NASD
     (including reasonable fees and disbursements of counsel for any
     underwriters or Holders in connection with state or other securities or
     blue sky qualification of any of the Exchange Certificates or
     Registrable Certificates), (iii) all expenses incurred by the Company in
     preparing or assisting in preparing, word processing, printing and
     distributing any Registration Statement, any Prospectus, any amendments
     or supplements thereto, any underwriting agreements, securities sales
     agreements and other documents relating to the performance of and
     compliance with this Agreement, (iv) all rating agency fees, (v) all
     fees and expenses incurred in connection with the listing, if any, of
     any of the Registrable Certificates on any securities exchange or
     exchanges, (vi) all fees and disbursements relating to the qualification
     of the Pass Through Trust Agreements and the Successor Pass Through
     Trust Agreements under applicable securities laws, (vii) the fees and
     disbursements of counsel for the Company and of the independent public
     accountants of the Company, including the expenses of any special audits
     or "cold comfort" letters required by or incident to such performance
     and compliance, (viii) the reasonable fees and expenses of the Trustees,
     including their counsel, and any escrow agent or custodian, (ix) in the
     case of a Shelf Registration Statement, the fees and disbursements of
     one counsel for the Holders (which counsel shall be selected by the
     Majority Holders and which counsel may also be counsel for the Initial
     Purchasers) and (x) any reasonable fees and disbursements of the
     underwriters, if any, in connection with any Shelf Registration
     Statement, and the reasonable fees and expenses of any special experts
     retained by the Company in connection with any Registration Statement,
     in each case as are customarily required to be paid by issuers, but
     excluding (with respect to clauses (iii) through (x) above) fees of

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                                                                            5

     counsel to the underwriters (other than fees and expenses set forth in
     clause (ii) above) or the Holders and underwriting discounts and
     commissions and transfer taxes, if any relating to the sale or
     disposition of Registrable Certificates by a Holder.

          "Registration Statement" shall mean any registration statement of
     the Company which covers any of the Exchange Certificates or Registrable
     Certificates pursuant to the provisions of this Agreement, and all
     amendments and supplements to any such Registration Statement, including
     post-effective amendments, in each case including the Prospectus
     contained therein, all exhibits thereto and all material incorporated by
     reference therein.

          "SEC" shall mean the Securities and Exchange Commission, as from
     time to time constituted or created under the United States Securities
     Exchange Act of 1934, as amended, or, if at any time after the execution
     of this instrument such Commission is not existing and performing the
     duties now assigned to it under the TIA, then the body performing such
     duties on such date.

          "Shelf Registration" shall mean a registration under the 1933 Act
     effected pursuant to Section 2(b) hereof.

          "Shelf Registration Statement" shall mean a "shelf" registration
     statement of the Company pursuant to the provisions of Section 2(b) of
     this Agreement which covers some or all of the Registrable Certificates
     (but no other securities unless approved by the Holders whose
     Registrable Certificates are covered by such Shelf Registration
     Statement) on an appropriate form under Rule 415 under the 1933 Act, or
     any similar rule that may be adopted by the SEC, and all amendments and
     supplements to such registration statement, including post- effective
     amendments, in each case including the Prospectus contained therein, all
     exhibits thereto and all material incorporated by reference therein.

          "Staff" shall mean the Staff of the Division of Corporation Finance
     of the SEC.

          "Successor Pass Through Trust Agreements" shall mean each of the
     Successor Pass Through Trust Agreements entered into on the date hereof
     between the Company and each Trustee forming the Successor Trusts, as
     may be amended from time to time in accordance with the terms thereof.

          "Successor Trusts" shall have the meaning set forth in the preamble
     of this Agreement.

          "TIA" shall have the meaning set forth in Section 3(l) of this
     Agreement.

          "Transfer Date" shall have the meaning set forth in the Purchase
     Agreement.

          "Trustees" shall mean the trustees under the Pass Through Trust
     Agreements or the Successor Pass Through Trust Agreements, as the case
     may be.

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          "Trusts" shall mean the Original Trusts, or the Successor Trusts,
     as the case may be.

          2. Registration under the 1933 Act.

          (a) Exchange Offer Registration. To the extent not prohibited by
any applicable law or applicable interpretation of the Staff, the Company
shall (A) file with the SEC within 90 days after the Closing Date an Exchange
Offer Registration Statement covering the offer by the Company to the Holders
to exchange all of the Registrable Certificates for Exchange Certificates,
(B) use its reasonable best efforts to cause such Exchange Offer Registration
Statement to be declared effective by the SEC within 180 days after the
Closing Date, (C) use its reasonable best efforts to cause such Registration
Statement to remain effective until the closing of the Exchange Offer and (D)
use its reasonable best efforts to consummate the Exchange Offer within 210
days after the Closing Date. Upon the effectiveness of the Exchange Offer
Registration Statement, the Company shall promptly commence the Exchange
Offer, it being the objective of such Exchange Offer to enable each Holder
(other than Participating Broker-Dealers) eligible and electing to exchange
Registrable Certificates for Exchange Certificates (assuming that such Holder
is not an affiliate of the Company within the meaning of Rule 405 under the
1933 Act, acquires the Exchange Certificates in the ordinary course of such
Holder's business and has no arrangements or understandings with any person
to participate in the Exchange Offer for the purpose of distributing the
Exchange Certificates) to trade such Exchange Certificates from and after
their receipt without any limitations or restrictions under the 1933 Act and
without material restrictions under the securities laws of a substantial
proportion of the several states of the United States.

          In connection with the Exchange Offer, the Company shall or shall
direct the Trustees to and the Trustee shall:

          (i) mail to each Holder a copy of the Prospectus forming part of
     the Exchange Offer Registration Statement, together with an appropriate
     letter of transmittal and related documents;

          (ii) keep the Exchange Offer open for not less than 20 Business
     Days after the date notice thereof is mailed to the Holders (or longer
     if required by applicable law);

          (iii) use the services of DTC for the Exchange Offer with respect
     to Initial Certificates evidenced by global certificates;

          (iv) permit Holders to withdraw tendered Registrable Certificates
     at any time prior to the close of business, New York City time, on the
     last Business Day on which the Exchange Offer shall remain open, by
     delivering to the institution specified in the notice, a telegram,
     telex, facsimile transmission or letter setting forth the name of such
     Holder, the principal amount of Registrable Certificates delivered for
     exchange, and a statement that such Holder is withdrawing its election
     to have such Registrable Certificates exchanged;

          (v) use its reasonable best efforts to ensure that (i) any Exchange
     Offer Registration Statement and any amendment thereto and any
     Prospectus forming part thereof and any supplement thereto complies in
     all material respects with the

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     1933 Act and the rules and regulations thereunder, (ii) any Exchange
     Offer Registration Statement and any amendment thereto does not, when it
     becomes effective, contain an untrue statement of a material fact or
     omit to state a material fact required to be stated therein or necessary
     to make the statements therein not misleading and (iii) any Prospectus
     forming part of any Exchange Offer Registration Statement, and any
     supplement to such Prospectus (as amended or supplemented from time to
     time), does not, prior to the consummation of the Exchange Offer,
     include an untrue statement of a material fact or omit to state a
     material fact necessary in order to make the statements, in light of the
     circumstances under which they were made, not misleading; and

          (vi) otherwise comply in all respects with all applicable laws
     relating to the Exchange Offer.

          As soon as practicable after the close of the Exchange Offer, the
Company shall or shall direct the Trustees to and the Trustees shall:

          (i) accept for exchange Registrable Certificates duly tendered and
     not validly withdrawn pursuant to the Exchange Offer in accordance with
     the terms of the Exchange Offer Registration Statement and the letter of
     transmittal which is an exhibit thereto;

          (ii) cancel or cause to be canceled all Registrable Certificates so
     accepted for exchange by the Company; and

          (iii) promptly cause to be authenticated and delivered Exchange
     Certificates to each Holder of Registrable Certificates equal in amount
     to the Registrable Certificates of such Holder so accepted for exchange.

          Interest on each Exchange Certificate will accrue from the last
date on which interest was paid on the Registrable Certificates surrendered
in exchange therefor or, if no interest has been paid on the Registrable
Certificates, from the Closing Date. The Exchange Offer shall not be subject
to any conditions, other than that the Exchange Offer, or the making of any
exchange by a Holder, does not violate applicable law or any applicable
interpretation of the Staff. Each Holder of Registrable Certificates (other
than Participating Broker-Dealers) who wishes to exchange such Registrable
Certificates for Exchange Certificates in the Exchange Offer shall represent
that (i) it is not an "affiliate" of the Company or the Trustee within the
meaning of Rule 405 under the 1933 Act, (ii) any Exchange Certificates to be
received by it were acquired in the ordinary course of business and (iii) it
has no arrangement with any Person to participate in the distribution (within
the meaning of the 1933 Act) of the Exchange Certificates.

          (b) Shelf Registration. (i) If, because of any change in law or
applicable interpretations thereof by the Staff, the Company is not permitted
to effect the Exchange Offer as contemplated by Section 2(a) hereof, or (ii)
if for any other reason the Exchange Offer is not declared effective within
180 days after the Closing Date or the Exchange Offer is not consummated
within 210 days after the Closing Date (a "Registration Default"), or (iii)
if any Holder (other than an Initial Purchaser) is not eligible to
participate in the Exchange Offer or (iv) upon the request of any Initial
Purchaser (with respect to any Registrable Certificates which it acquired
directly from the Company) following the consummation of the Exchange Offer
if such Initial

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Purchaser shall hold Registrable Certificates which it acquired directly from
the Company and if such Initial Purchaser is not permitted, in the opinion of
counsel to such Initial Purchaser, pursuant to applicable law or applicable
interpretation of the Staff to participate in the Exchange Offer, the Company
shall, at its cost:

          (A) as promptly as practicable, file with the SEC a Shelf
     Registration Statement relating to the offer and sale of the Registrable
     Certificates by the Holders from time to time in accordance with the
     methods of distribution elected by the Majority Holders of such
     Registrable Certificates and set forth in such Shelf Registration
     Statement, and use its reasonable best efforts to cause such Shelf
     Registration Statement to be declared effective by the SEC by the 180th
     day after the Closing Date in the event that the Company is not
     permitted to effect the Exchange Offer as contemplated by Section 2(a)
     hereof (or promptly if the Exchange Offer is not consummated within 210
     days after the Closing Date or in the event of a request by any Holder
     pursuant to clause (iii) above or any Initial Purchaser pursuant to
     clause (iv) above). In the event that the Company is required to file a
     Shelf Registration Statement upon the request of any Holder (other than
     an Initial Purchaser) not eligible to participate in the Exchange Offer
     pursuant to clause (iii) above or upon the request of any Initial
     Purchaser pursuant to clause (iv) above, the Company shall file and use
     its reasonable best efforts to have declared effective by the SEC both
     an Exchange Offer Registration Statement pursuant to Section 2(a) with
     respect to all Registrable Certificates and a Shelf Registration
     Statement (which may be a combined Registration Statement with the
     Exchange Offer Registration Statement) with respect to offers and sales
     of Registrable Certificates held by such Holder or such Initial
     Purchaser after completion of the Exchange Offer. If the Company files a
     Shelf Registration Statement pursuant to Section 2(b)(i) or (ii) hereof,
     the Company will no longer be required to effect the Exchange Offer;

          (B) use its reasonable best efforts to keep the Shelf Registration
     Statement continuously effective, in order to permit the Prospectus
     forming part thereof to be usable by Holders, for a period of two years
     after the Closing Date (or one year from the Closing Date if such Shelf
     Registration Statement is filed upon the request of any Initial
     Purchaser pursuant to clause (iv) above) or such shorter period as shall
     end when all of the Registrable Certificates covered by the Shelf
     Registration Statement have been sold pursuant to the Shelf Registration
     Statement or cease to be outstanding; and

          (C) notwithstanding any other provisions hereof, use its reasonable
     best efforts to ensure that (i) any Shelf Registration Statement and any
     amendment thereto and any Prospectus forming part thereof and any
     supplement thereto complies in all material respects with the 1933 Act
     and the rules and regulations thereunder, (ii) any Shelf Registration
     Statement and any amendment thereto (in either case, other than with
     respect to information included therein in reliance upon or in
     conformity with information furnished to the Company by or on behalf of
     a Holder specifically for use therein (the "Holders' Information")) does
     not, when it becomes effective, contain an untrue statement of a
     material fact or omit to state a material fact required to be stated
     therein or necessary to make the statements therein not misleading and
     (iii) during the period in which the Shelf Registration Statement is
     effective any Prospectus forming part of any Shelf Registration
     Statement, and any supplement to such Prospectus (as

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                                                                            9

     amended or supplemented from time to time) (in any case, other than with
     respect to Holders' Information), does not include an untrue statement
     of a material fact or omit to state a material fact necessary in order
     to make the statements, in light of the circumstances under which they
     were made, not misleading.

          The Company further agrees, if necessary, to supplement or amend
the Shelf Registration Statement if reasonably requested by the Majority
Holders with respect to Holders' Information and otherwise as required by
Section 3(b) below, to use all reasonable efforts to cause any such amendment
to become effective and such Shelf Registration Statement to become usable as
soon as practicable thereafter and to furnish to the Holders of Registrable
Certificates included in the Shelf Registration Statement copies of any such
supplement or amendment promptly after its being used or filed with the SEC.

          The Company shall be allowed a period of five days, beginning on
the first day a Registration Default occurs, to cure such Registration
Default before the Company will be required to comply with the requirements
of Section 2(b).

          (c) Expenses. The Company shall pay all Registration Expenses in
connection with the registration pursuant to Section 2(a) or 2(b) and, in the
case of any Shelf Registration Statement, will reimburse the Holders or
Initial Purchasers for the reasonable fees and disbursements of one firm or
counsel designated in writing by the Majority Holders to act as counsel for
the Holders of the Registrable Certificates in connection therewith. Each
Holder shall pay all expenses of its counsel, other than as set forth in the
preceding sentence, underwriting discounts and commissions and transfer
taxes, if any, relating to the sale or disposition of such Holder's
Registrable Certificates pursuant to the Shelf Registration Statement.

          (d) Effective Registration Statement. (i) The Company will be
deemed not to have used its reasonable best efforts to cause the Exchange
Offer Registration Statement or the Shelf Registration Statement, as the case
may be, to become, or to remain, effective during the requisite period if the
Company voluntarily takes any action that would result in any such
Registration Statement not being declared effective or in the Holders of
Registrable Certificates covered thereby not being able to exchange or offer
and sell such Registrable Certificates during that period unless (A) such
action is required by applicable law or (B) such action is taken by the
Company in good faith and for valid business reasons (not including avoidance
of the Company's obligations hereunder), including, without limitation, the
acquisition or divestiture of assets, so long as the Company promptly
complies with the requirements of Section 3(j) hereof, if applicable.

          (ii) An Exchange Offer Registration Statement pursuant to Section
2(a) hereof or a Shelf Registration Statement pursuant to Section 2(b) hereof
will not be deemed to have become effective unless it has been declared
effective by the SEC; provided, however, that if, after it has been declared
effective, the offering of Registrable Certificates pursuant to a
Registration Statement is interfered with by any stop order, injunction or
other order or requirement of the SEC or any other governmental agency or
court, such Registration Statement will be deemed not to have been effective
during the period of such interference, until the offering of Registrable
Certificates pursuant to such Registration Statement may legally resume.

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          (e) Increase in Interest Rate. In the event that no Registration
Event has occurred on or prior to the 210th day after the Closing Date, the
interest rate per annum payable in respect of the Initial Certificates shall
be increased by 0.50%, effective from and including such 210th day, to but
excluding the earlier of (i) the date on which a Registration Event occurs
and (ii) the date on which there cease to be any Registrable Certificates,
which additional interest shall be paid through a combination of an increase
in the interest rate per annum borne by the Equipment Notes of 0.50% and, if
applicable, an increase in the interest rate per annum payable on the
Deposits of 0.50% pursuant to the Depositary Agreements. In the event that
the Shelf Registration Statement ceases to be effective at any time during
the period specified by Section 2(b)(B) hereof for more than 60 days, whether
or not consecutive, during any 12-month period, the interest rate payable in
respect of the Initial Certificates shall be increased by 0.50% per annum
from the 61st day of the applicable 12-month period such Shelf Registration
Statement ceases to be effective until such time as the Shelf Registration
Statement again becomes effective (or, if earlier, the end of the period
specified by Section 2(b)(B) hereof), which additional interest shall be paid
through a combination of an increase in the interest rate per annum borne by
the Equipment Notes of 0.50% and, if applicable, an increase in the interest
rate per annum payable on the Deposits of 0.50% pursuant to the Depositary
Agreements.

          (f) Specific Performance. Without limiting the remedies available
to the Initial Purchasers and the Holders, the Company acknowledges that any
failure by the Company to comply with its obligations under Section 2(a) and
Section 2(b) hereof may result in material irreparable injury to the Initial
Purchasers or the Holders for which there is no adequate remedy at law, that
it will not be possible to measure damages for such injuries precisely and
that, in the event of any such failure, each Initial Purchaser or any Holder
may obtain such relief as may be required to specifically enforce the
Company's obligations under Section 2(a) and Section 2(b) hereof.

          3. Registration Procedures. In connection with the obligations of
the Company with respect to the Registration Statements pursuant to Sections
2(a) and 2(b) hereof, the Company shall:

          (a) prepare and file with the SEC a Registration Statement, within
     the time period specified in Section 2, on the appropriate form under
     the 1933 Act, which form (i) shall be selected by the Company, (ii)
     shall, in the case of a Shelf Registration, be available for the sale of
     the Registrable Certificates by the selling Holders thereof and (iii)
     shall comply as to form in all material respects with the requirements
     of the applicable form;

          (b) prepare and file with the SEC such amendments and
     post-effective amendments to each Registration Statement as may be
     necessary under applicable law to keep such Registration Statement
     effective for the applicable period; cause each Prospectus to be
     supplemented by any required prospectus supplement, and as so
     supplemented to be filed pursuant to Rule 424 under the 1933 Act;

          (c) in the case of a Shelf Registration, (i) notify each Holder of
     Registrable Certificates when a Shelf Registration Statement with
     respect to the Registrable Certificates has been filed and advise such
     Holders that the distribution of Registrable Certificates will be made
     in accordance with the method elected by the Majority Holders; (ii)
     furnish to each Holder of Registrable

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     Certificates included within the coverage of the Shelf Registration
     Statement at least one copy of such Shelf Registration Statement and any
     post-effective amendment thereto, including financial statements and
     schedules, and, if the Holder so requests in writing, all reports, other
     documents and exhibits filed with the SEC (including those incorporated
     by reference) at the expense of the Company, (iii) furnish to each
     Holder of Registrable Certificates included within the coverage of the
     Shelf Registration Statement, to counsel for the Holders and to each
     underwriter of an underwritten offering of Registrable Certificates, if
     any, without charge, as many copies of each Prospectus, including each
     preliminary Prospectus, and any amendment or supplement thereto as such
     Holder or underwriter may reasonably request in order to facilitate the
     public sale or other disposition of the Registrable Certificates; and
     (iv) subject to the last paragraph of Section 3, consent to the use of
     the Prospectus or any amendment or supplement thereto by each of the
     selling Holders of Registrable Certificates included in the Shelf
     Registration Statement in connection with the offering and sale of the
     Registrable Certificates covered by the Prospectus or any amendment or
     supplement thereto;

          (d) use its reasonable best efforts to register or qualify the
     Registrable Certificates or cooperate with the Holders of Registrable
     Certificates and their counsel in the registration or qualification of
     such Registrable Certificates under all applicable state securities or
     "blue sky" laws of such jurisdictions as any Holder of Registrable
     Certificates covered by a Registration Statement and each underwriter of
     an underwritten offering of Registrable Certificates shall reasonably
     request in writing, to cooperate with the Holders in connection with any
     filings required to be made with the NASD, and do any and all other acts
     and things which may be reasonably necessary or advisable to enable such
     Holders to consummate the disposition in each such jurisdiction of such
     Registrable Certificates owned by such Holders; provided, however, that
     in no event shall the Company be required to (i) qualify as a foreign
     corporation or as a dealer in securities in any jurisdiction where it
     would not otherwise be required to qualify but for this Section 3(d) or
     (ii) take any action which would subject it to general service of
     process or taxation in any such jurisdiction if it is not then so
     subject;

          (e) in the case of a Shelf Registration or in the case of an
     Exchange Registration if the Company has received from a Participating
     Broker-Dealer the notice specified in Section 3(f)(A)(ii), notify each
     Holder of Registrable Certificates included in such Shelf Registration
     or such Exchange Registration and such Participating Broker-Dealer
     promptly and, if requested by such Holder, Participating Broker-Dealer
     or their counsel, confirm such advice in writing promptly (i) when a
     Registration Statement has become effective and when any post-effective
     amendments and supplements thereto become effective, (ii) of any request
     by the SEC or any state securities authority for post-effective
     amendments and supplements to a Registration Statement and Prospectus or
     for additional information after the Registration Statement has become
     effective, (iii) of the issuance by the SEC or any state securities
     authority of any stop order suspending the effectiveness of a
     Registration Statement or the initiation of any proceedings for that
     purpose, (iv) in the case of a Shelf Registration at the closing of any
     sale of Registrable Certificates if, between the effective date of a
     Shelf Registration Statement and such closing, the representations and
     warranties of the Company contained in any underwriting agreement,
     securities sales agreement or other

<PAGE>

                                                                           12

     similar agreement, if any, relating to such offering cease to be true
     and correct in all material respects, (v) of the receipt by the Company
     of any notification with respect to the suspension of the qualification
     of the Registrable Certificates for sale in any jurisdiction or the
     initiation or threatening of any proceeding for such purpose, (vi) of
     the happening of any material event or the discovery of any material
     facts during the period a Registration Statement is effective which
     makes any statement made in such Registration Statement or the related
     Prospectus untrue or which requires the making of any changes in such
     Registration Statement or Prospectus in order to make the statements
     therein (in the case of the Prospectus in light of the circumstances
     under which they were made) not misleading and (vii) of any
     determination by the Company that a post-effective amendment to a
     Registration Statement would be appropriate;

          (f) (A) in the case of the Exchange Offer, (i) include in the
     Exchange Offer Registration Statement a "Plan of Distribution" section
     covering the use of the Prospectus included in the Exchange Offer
     Registration Statement by broker- dealers who have exchanged their
     Registrable Certificates for Exchange Certificates for the resale of
     such Exchange Certificates, (ii) furnish to each broker-dealer who has
     delivered to the Company a notice that they will be utilizing the
     Prospectus contained in the Exchange Offer Registration Statement to
     sell Exchange Certificates and is required to deliver a Prospectus and
     who agrees to be bound by the applicable terms of this Agreement,
     without charge, as many copies of each Prospectus included in the
     Exchange Offer Registration Statement, including any preliminary
     prospectus, and any amendment or supplement thereto, as such
     broker-dealer may reasonably request, (iii) include in the Exchange
     Offer Registration Statement a statement that any broker-dealer who
     holds Registrable Certificates acquired for its own account as a result
     of market-making activities or other trading activities (a
     "Participating Broker- Dealer"), and who receives Exchange Certificates
     for Registrable Certificates pursuant to the Exchange Offer, may be a
     statutory underwriter and must deliver a prospectus meeting the
     requirements of the 1933 Act in connection with any resale of such
     Exchange Certificates, (iv) subject to the last paragraph of Section 3,
     hereby consent to the use of the Prospectus forming part of the Exchange
     Offer Registration Statement or any amendment or supplement thereto, by
     any broker-dealer who has delivered the notice specified in clause (ii)
     above in connection with the sale or transfer of the Exchange
     Certificates covered by the Prospectus or any amendment or supplement
     thereto, and (v) include in the transmittal letter or similar
     documentation to be executed by an exchange offeree in order to
     participate in the Exchange Offer the following provision:

          "If the undersigned is not a broker-dealer, the undersigned
          represents that it is not engaged in, and does not intend to engage
          in, a distribution of Exchange Certificates. If the undersigned is
          a broker-dealer that will receive Exchange Certificates for its own
          account in exchange for Registrable Certificates, it represents
          that the Registrable Certificates to be exchanged for Exchange
          Certificates were acquired by it as a result of market-making
          activities or other trading activities and acknowledges that it
          will deliver a prospectus meeting the requirements of the 1933 Act
          in connection with any resale of such Exchange Certificates
          pursuant to the Exchange Offer; however, by so acknowledging and by

<PAGE>

                                                                           13

          delivering a prospectus, the undersigned will not be deemed to
          admit that it is an "underwriter" within the meaning of the 1933
          Act";

          (B) to the extent any Participating Broker-Dealer participates in
the Exchange Offer, use its reasonable best efforts to cause to be delivered
at the request of an entity representing the Participating Broker-Dealers
(which entity shall be Salomon Smith Barney Inc., unless it elects not to act
as such representative) only one, if any, "cold comfort" letter with respect
to the Prospectus in the form existing on the last date for which exchanges
are accepted pursuant to the Exchange Offer and with respect to each
subsequent amendment or supplement, if any, effected during the period
specified in clause (C) below;

          (C) to the extent any Participating Broker-Dealer participates in
the Exchange Offer, use its reasonable best efforts to maintain the
effectiveness of the Exchange Offer Registration Statement for such period of
time as any Participating Broker-Dealer must comply with the prospectus
delivery requirements of the 1933 Act; provided, however, that such period
shall not exceed the 180-day period specified in clause (D) below; and

          (D) not be required to amend or supplement the Prospectus contained
in the Exchange Offer Registration Statement as would otherwise be
contemplated by Section 3(b), or take any other action as a result of this
Section 3(f), for a period exceeding 180 days after the last date for which
exchanges are accepted pursuant to the Exchange Offer (as such period may be
extended by the Company) and Participating Broker-Dealers shall not be
authorized by the Company to, and shall not, deliver such Prospectus after
such period in connection with resales contemplated by this Section 3;

          (g) (A) in the case of an Exchange Offer, furnish counsel for the
Initial Purchasers and (B) in the case of a Shelf Registration, furnish
counsel for the Holders of Registrable Certificates copies of any request by
the SEC or any state securities authority for amendments or supplements to a
Registration Statement and Prospectus or for additional information;

          (h) make every reasonable effort to obtain the withdrawal of any
order suspending the effectiveness of a Registration Statement as soon as
practicable;

          (i) unless any Registrable Certificates are in book entry form
only, in the case of a Shelf Registration, cause the Trustees to cooperate
with the selling Holders of Registrable Certificates to facilitate the timely
preparation and delivery of certificates representing Registrable
Certificates to be sold free from any restrictive legends; and cause such
Registrable Certificates to be in such denominations (consistent with the
provisions of the Pass Through Trust Agreements or the Successor Pass Through
Trust Agreements, as the case may be) and registered in such names as the
selling Holders or the underwriters, if any, may reasonably request at least
two Business Days prior to the closing of any sale of Registrable
Certificates;

          (j) in the case of a Shelf Registration, upon the occurrence of any
event or the discovery of any facts, each as contemplated by Sections
2(d)(i)(B) or 3(e)(ii)-(vi) hereof, use its reasonable best efforts to
prepare a post-effective amendment to a Registration Statement or an
amendment or supplement to the related Prospectus or file

<PAGE>

                                                                           14

any other required document so that, as thereafter delivered to the Initial
Purchasers of the Registrable Certificates, such Prospectus will not contain
at the time of such delivery any untrue statement of a material fact or omit
to state a material fact necessary to make the statements therein, in light
of the circumstances under which they were made, not misleading. The Company
agrees to notify each Holder to suspend use of the Prospectus as promptly as
practicable after the occurrence of such an event, and each Holder hereby
agrees to suspend use of the Prospectus as promptly as practicable upon
receipt of such notice until the Company has amended or supplemented the
Prospectus to correct such misstatement or omission or until notified that
use of the Prospectus may be resumed, provided that the Company shall use all
reasonable efforts to cause such suspension not to last more than 30 days per
occurrence or more than 60 days in aggregate in a calendar year. At such time
as such public disclosure is otherwise made or the Company determines that
such disclosure is not necessary, in each case to correct any misstatement of
a material fact or to include any omitted material fact, the Company agrees
promptly to notify each Holder of such determination and to furnish each
Holder such numbers of copies of the Prospectus, as amended or supplemented,
as such Holder may reasonably request;

          (k) obtain a CUSIP number for all Exchange Certificates, or
Registrable Certificates, as the case may be, of each Trust not later than
the effective date of an Exchange Offer Registration Statement or Shelf
Registration Statement, as the case may be, and provide the Trustees with
certificates evidencing the Exchange Certificates or the Registrable
Certificates, as the case may be, held in book entry form, in a form eligible
for deposit with DTC;

          (l) (i) cause the Pass Through Trust Agreements or Successor Pass
Through Trust Agreements, as the case may be, to be qualified under the Trust
Indenture Act of 1939, as amended (the "TIA"), in connection with the
registration of the Exchange Certificates, or Registrable Certificates, as
the case may be, (ii) cooperate with the Trustees and the Holders to effect
such changes to the Pass Through Trust Agreements or Successor Pass Through
Trust Agreements as may be required for the Pass Through Trust Agreements or
Successor Pass Through Trust Agreements, as the case may be, to be so
qualified in accordance with the terms of the TIA and (iii) execute, and use
its reasonable best efforts to cause the Trustees to execute, all documents
as may be required to effect such changes, and all other forms and documents
required to be filed with the SEC to enable the Pass Through Trust Agreements
or Successor Pass Through Trust Agreements, as the case may be, to be so
qualified in a timely manner;

          (m) in the case of a Shelf Registration, enter into such customary
agreements (including underwriting agreements in customary form) and take all
other customary and appropriate actions (including those reasonably requested
by the Holders of a majority in principal amount of Registrable Certificates
being sold) in order to expedite or facilitate the disposition of such
Registrable Certificates and in such connection whether or not an
underwriting agreement is entered into and whether or not the registration is
an underwritten registration:

          (i) make such representations and warranties to the Holders of such
     Registrable Certificates and the underwriters, if any, in form,
     substance and scope as are customarily made by the Company to
     underwriters in similar underwritten offerings as may be reasonably
     requested by them;

<PAGE>

                                                                           15

          (ii) obtain opinions of counsel to the Company (who may be the
     general counsel of the Company) and updates thereof (which counsel and
     opinions (in form, scope and substance) shall be reasonably satisfactory
     to the managing underwriters, if any, or if there are no such managing
     underwriters, to the Holders of a majority in principal amount of the
     Registrable Certificates being sold) addressed to each selling Holder
     and the underwriters, if any, covering the matters customarily covered
     in opinions requested in sales of securities or underwritten offerings;

          (iii) obtain a "cold comfort" letter and updates thereof from the
     Company's independent certified public accountants addressed to the
     underwriters, if any, such letter to be in customary form and covering
     such matters of the type customarily covered in "cold comfort" letters
     in connection with similar underwritten offerings as the managing
     underwriters shall reasonably request;

          (iv) enter into a securities sales agreement with the Holders and
     an agent of the Holders providing for, among other things, the
     appointment of such agent for the selling Holders for the purpose of
     soliciting purchases of Registrable Certificates, which agreement shall
     be in form, substance and scope customary for similar offerings;

          (v) if an underwriting agreement is entered into, cause the same to
     set forth indemnification provisions and procedures substantially
     equivalent to the indemnification provisions and procedures set forth in
     Section 5 hereof (or such other provisions and procedures acceptable to
     Holders of a majority in principal amount of Registrable Certificates
     being sold and the managing underwriters) with respect to all parties to
     be indemnified pursuant to said Section; and

          (vi) deliver such other documents and certificates as may be
     reasonably requested by Holders of a majority in principal amount of
     Registrable Certificates being sold, and as are customarily delivered in
     similar offerings.

The above shall be done at (i) the effectiveness of such Registration
Statement (and, if appropriate, each post-effective amendment thereto) if
appropriate in connection with any particular disposition of Registrable
Certificates and (ii) each closing under any underwriting or similar
agreement as and to the extent required thereunder. In the case of any
underwritten offering, the Company shall provide written notice to the
Holders of all Registrable Certificates of such underwritten offering at
least 30 days prior to the filing of the prospectus supplement in connection
with such underwritten offering. Such notice shall (x) offer each such Holder
the right to participate in such underwritten offering, (y) specify a date,
which shall be no earlier than 10 days following the date of such notice, by
which such Holder must inform the Company of its intent to participate in
such underwritten offering and (z) include the instructions such Holder must
follow in order to participate in such underwritten offering;

          (n) in the case of a Shelf Registration, make available for
inspection by representatives of the Holders of the Registrable Certificates
and any underwriters participating in any disposition pursuant to a Shelf
Registration Statement and any counsel or accountant retained by such Holders
or underwriters, all financial and other records, pertinent corporate
documents and properties of the Company reasonably

<PAGE>

                                                                           16

requested by it, and cause the respective officers, directors, employees, and
any other agents of the Company to make reasonably available all relevant
information reasonably requested by any such representative, underwriter,
counsel or accountant in connection with a Registration Statement, in each
case as is customary for similar due diligence examinations; provided,
however, that any information that is designated in writing by the Company,
in good faith, as confidential at the time of delivery of such information
shall be kept confidential by such representatives, underwriters, counsel or
accountant, unless such disclosure is made in connection with a court
proceeding or required by law, or such information becomes available to the
public generally or through a third party without an accompanying obligation
of confidentiality; and provided further that the foregoing inspection and
information gathering shall, to the extent reasonably possible, be
coordinated on behalf of the Holders and the other parties entitled thereto
by one counsel designated by and on behalf of such Holders and other parties;
and provided further that each person performing such inspection and
information gathering will be required to execute a confidentiality agreement
containing customary terms and provisions and to agree that upon learning
that disclosure of such information is sought in connection with a court
proceeding or required by law, it will give notice to the Company and allow
the Company at its expense to undertake appropriate action to prevent
disclosure of such confidential information;

          (o) (i) a reasonable time prior to the filing of any Exchange Offer
Registration Statement, any Prospectus forming a part thereof, any amendment
to an Exchange Offer Registration Statement or amendment or supplement to a
Prospectus, provide copies of such document to the Initial Purchasers, and
use its reasonable best efforts to reflect in any such document when filed
such comments as any of the Initial Purchasers or their counsel may
reasonably request; (ii) in the case of a Shelf Registration, a reasonable
time prior to filing any Shelf Registration Statement, any Prospectus forming
a part thereof, any amendment to such Shelf Registration Statement or
amendment or supplement to such Prospectus (unless such supplement is being
filed in response to a request by a Holder to amend any Holder's Information
with respect to such Holder), provide copies of such document to the Holders
of Registrable Certificates participating in a disposition thereunder, to the
Initial Purchasers, to counsel on behalf of the Holders and to the
underwriter or underwriters of an underwritten offering of Registrable
Certificates, if any, and use its reasonable best efforts to reflect such
comments in any such document when filed as such Holders of Registrable
Certificates, their counsel and any underwriter may reasonably request; and
(iii) cause the representatives of the Company to be available for discussion
of such document as shall be reasonably requested by such Holders of
Registrable Certificates, the Initial Purchasers on behalf of such Holders or
any underwriter and shall not at any time make any filing of any such
document of which such Holders, the Initial Purchasers on behalf of such
Holders, their counsel or any underwriter shall not have previously been
advised and furnished a copy or to which such Holders, the Initial Purchasers
on behalf of such Holders, their counsel or any underwriter shall reasonably
object;

          (p) use its reasonable best efforts to cause the Exchange
Certificates or Registrable Certificates, as the case may be, to be rated
with two nationally recognized statistical rating organizations (as such term
is defined in Rule 436(g)(12) under the 1933 Act); and

          (q) otherwise use its reasonable best efforts to comply with all
applicable rules and regulations of the SEC and make generally available to
its security holders, as

<PAGE>

                                                                           17

soon as reasonably practicable after the effective date of a Registration
Statement, an earnings statement which shall satisfy the provisions of
Section 11(a) of the 1933 Act and Rule 158 thereunder.

          In the case of a Shelf Registration Statement, the Company may (as
a condition to such Holder's participation in the Shelf Registration) require
each Holder of Registrable Certificates to agree to be bound by the
applicable terms of this Agreement and to furnish to the Company such
information regarding such Holder and the proposed distribution by such
Holder of such Registrable Certificates as the Company may from time to time
reasonably request and the Company may exclude from such registration the
Registrable Certificates of any Holder that fails to furnish such information
within a reasonable time after receiving such request. Each Holder as to
which any Shelf Registration is being effected hereby agrees to furnish to
the Company all information with respect to such Holder necessary to make the
information previously furnished to the Company by such Holder not materially
misleading.

          Each Holder agrees that, upon receipt of any notice from the
Company of the happening of any event or the discovery of any facts, each of
the kind described in Sections 2(d)(i)(B) or 3(e)(ii)-(vi) hereof, such
Holder will forthwith discontinue disposition of Registrable Certificates
pursuant to such Registration Statement until such Holder's receipt of the
copies of the supplemented or amended Prospectus contemplated by Section 3(j)
hereof or it is advised in writing by the Company that the use of the
applicable Prospectus may be resumed, and, if so directed by the Company,
such Holder will deliver to the Company (at the Company's expense) all copies
in its possession other than permanent file copies then in such Holder's
possession, of the Prospectus covering such Registrable Certificates current
at the time of receipt of such notice. If the Company shall give any such
notice to suspend the disposition of Registrable Certificates pursuant to a
Registration Statement as a result of the happening of any event or the
discovery of any facts, each of the kind described in Sections 2(d)(i)(B) or
3(e)(ii)-(vi) hereof, the Company shall be deemed to have used its reasonable
best efforts to keep the Registration Statement effective during such period
of suspension provided that the Company shall use its reasonable best efforts
to file and have declared effective (if an amendment) as soon as practicable
an amendment or supplement to the Registration Statement and shall extend the
period during which the Registration Statement shall be maintained effective
pursuant to this Agreement by the number of days during the period from and
including the date of the giving of such notice to and including the date
when the Holders shall have received copies of the supplemented or amended
Prospectus necessary to resume such dispositions or it is advised in writing
by the Company that the use of the applicable Prospectus may be resumed.

          4. Underwritten Offering. The Holders of Registrable Certificates
covered by a Shelf Registration Statement who desire to do so may sell such
Registrable Certificates in an underwritten offering. In any such
underwritten offering, the investment banker or bankers and manager or
managers that will administer the offering will be selected by, and the
underwriting arrangements with respect thereto will be approved by, the
Holders of a majority of the Registrable Securities to be included in such
offering; provided, however, that (i) such investment bankers and managers
and underwriting arrangements must be reasonably satisfactory to the Company
and (ii) the Company shall not be obligated to arrange for more than one
underwritten offering during the period such Shelf Registration Statement is
required to be effective pursuant to Section 2(b)(B) hereof. No Holder may
participate in any underwritten offering

<PAGE>

                                                                           18

contemplated hereby unless such Holder (a) agrees to sell such Holder's
Registrable Certificates in accordance with any approved underwriting
arrangements, (b) completes and executes all reasonable questionnaires,
powers of attorney, indemnities, underwriting agreements, lock-up letters and
other documents required under the terms of such approved underwriting
arrangements and (c) at least 20% of the outstanding Registrable Certificates
are included in such underwritten offering. The Holders participating in any
underwritten offering shall be responsible for any expenses customarily borne
by selling securityholders, including underwriting discounts and commissions
and fees and expenses of counsel to the selling securityholders.

          5. Indemnification and Contribution. (a) The Company agrees to
indemnify and hold harmless, each Initial Purchaser, each Holder and each
person, if any, who controls any Initial Purchaser or any Holder within the
meaning of either Section 15 of the 1933 Act or Section 20 of the 1934 Act,
from and against all losses, claims, damages and liabilities (including,
without limitation, any legal or other expenses reasonably incurred by any
Initial Purchaser, any Holder or any such controlling person in connection
with defending or investigating any such action or claim) caused by any
untrue statement or alleged untrue statement of a material fact contained in
any Registration Statement (or any amendment thereto) pursuant to which
Exchange Certificates or Registrable Certificates were registered under the
1933 Act, including all documents incorporated therein by reference, or
caused by any omission or alleged omission to state therein a material fact
required to be stated therein or necessary to make the statements therein not
misleading, or caused by any untrue statement or alleged untrue statement of
a material fact contained in any Prospectus (as amended or supplemented if
the Company shall have furnished any amendments or supplements thereto), or
caused by any omission or alleged omission to state therein a material fact
necessary to make the statements therein in light of the circumstances under
which they were made not misleading, except insofar as such losses, claims,
damages or liabilities are caused by any such untrue statement or omission or
alleged untrue statement or omission based upon information relating to the
Initial Purchasers or any Holder furnished to the Company in writing by the
Initial Purchasers or any selling Holder expressly for use therein; provided,
however, that the foregoing indemnity agreement with respect to any
preliminary Prospectus shall not inure to the benefit of any Person from whom
the Person asserting any such losses, claims, damages or liabilities
purchased Registrable Certificates, or any person controlling such seller, if
a copy of the final Prospectus (as then amended or supplemented if the
Company shall have furnished any amendments or supplements thereto) was not
sent or given by or on behalf of such seller to such purchaser with or prior
to the written confirmation of the sale of the Registrable Certificates to
such Person, and if the final Prospectus (as so amended or supplemented)
would have cured the defect giving rise to such losses, claims, damages or
liabilities. In connection with any underwritten offering permitted by
Section 4, the Company will also indemnify the underwriters participating in
the distribution, their officers and directors and each Person who controls
such Persons (within the meaning of the 1933 Act and the 1934 Act) to the
same extent as provided above with respect to the indemnification of the
Holders, if requested in connection with any Registration Statement.

          (b) Each Holder agrees, severally and not jointly, to indemnify and
hold harmless the Company, each Initial Purchaser, the other selling Holders,
and each of their respective directors, officers who sign the Registration
Statement and each Person, if any, who controls the Company, any Initial
Purchaser and any other selling Holder within the meaning of either Section
15 of the 1933 Act or Section 20 of the 1934 Act to

<PAGE>

                                                                           19

the same extent as the foregoing indemnity from the Company to the Initial
Purchasers and the Holders, but only with reference to information relating
to such Holder furnished to the Company in writing by such Holder expressly
for use in any Registration Statement (or any amendment thereto) or any
Prospectus (or any amendment or supplement thereto).

          (c) In case any proceeding (including any governmental
investigation) shall be instituted involving any person in respect of which
indemnity may be sought pursuant to either paragraph (a) or paragraph (b)
above, such person (the "indemnified party") shall promptly notify the person
against whom such indemnity may be sought (the "indemnifying party") in
writing and the indemnifying party, may elect to or upon request of the
indemnified party, shall retain counsel reasonably satisfactory to the
indemnified party to represent the indemnified party and any others the
indemnifying party may designate in such proceeding and shall pay the fees
and disbursements of such counsel related to such proceeding. In any such
proceeding, any indemnified party shall have the right to retain its own
counsel, but the fees and expenses of such counsel shall be at the expense of
such indemnified party unless (i) the indemnifying party and the indemnified
party shall have mutually agreed to the retention of such counsel or (ii) the
named parties to any such proceeding (including any impleaded parties)
include both the indemnifying party and the indemnified party and
representation of both parties by the same counsel would be inappropriate due
to actual or potential differing interests between them. It is understood
that the indemnifying party shall not, in connection with any proceeding or
related proceedings in the same jurisdiction, be liable for the fees and
expenses of more than one separate firm (in addition to any local counsel)
for all such indemnified parties and that such fees and expenses shall be
reimbursed as they are incurred. Such firm shall be designated in writing (i)
by the Initial Purchasers in the case of the Initial Purchasers and related
parties indemnified pursuant to paragraph (a) above, (ii) by the Majority
Holders in the case of the Holders and related parties indemnified pursuant
to paragraph (a) above, and (iii) by the Company in the case of parties
indemnified pursuant to paragraph (b) above. The indemnifying party shall not
be liable for any settlement of any proceeding effected without its written
consent but, if settled with such consent or if there be a final judgment for
the plaintiff, the indemnifying party agrees to indemnify the indemnified
party from and against any loss or liability by reason of such settlement or
judgment. No indemnifyng party shall, without the prior written consent of
the indemnified party, effect any settlement of any pending or threatened
proceeding in respect of which such indemnified party is or could have been a
party and indemnity could have been sought hereunder by such indemnified
party, unless such settlement includes an unconditional release of such
indemnified party from all liability on claims that are the subject matter of
such proceeding.

          (d) If the indemnification provided for in paragraph (a) or
paragraph (b) of this Section 5 is unavailable to an indemnified party or
insufficient in respect of any losses, claims, damages or liabilities, then
each indemnifying party under such paragraph, in lieu of indemnifying such
indemnified party thereunder, shall contribute to the amount paid or payable
by such indemnified party as a result of such losses, claims, damages or
liabilities in such proportion as is appropriate to reflect the relative
fault of the indemnifying party or parties on the one hand and of the
indemnified party or parties on the other hand in connection with the
statements or omissions that resulted in such losses, claims, damages or
liabilities, as well as any other relevant equitable considerations. The
relative fault of the Company and the Holders shall be determined by
reference to, among other things, whether the untrue or alleged untrue
statement of a

<PAGE>

                                                                           20

material fact or the omission or alleged omission to state a material fact
relates to information supplied by the Company or by the Holders and the
parties' relative intent, knowledge, access to information and opportunity to
correct or prevent such statement or omission. The Holders' respective
obligations to contribute pursuant to this Section 5(d) are several in
proportion to the respective aggregate principal amount of Registrable
Certificates of such Holder that were registered pursuant to a Registration
Statement.

          (e) The Company and each Holder agree that it would not be just or
equitable if contribution pursuant to this Section 5 were determined by pro
rata allocation or by any other method of allocation that does not take
account of the equitable considerations referred to in paragraph (d) above.
The amount paid or payable by an indemnified party as a result of the losses,
claims, damages and liabilities referred to in paragraph (d) above shall be
deemed to include, subject to the limitations set forth above, any legal or
other expenses reasonably incurred by such indemnified party in connection
with investigating or defending any such action or claim. Notwithstanding the
provisions of this Section 5, no Holder shall be required to indemnify or
contribute any amount in excess of the amount by which the total price at
which Registrable Certificates were sold by such Holder exceeds the amount of
any damages that such Holder has otherwise been required to pay by reason of
such untrue or alleged untrue statement or omission or alleged omission. No
person guilty of fraudulent misrepresentation (within the meaning of Section
11(f) of the 1933 Act) shall be entitled to contribution from any person who
was not guilty of such fraudulent misrepresentation. The remedies provided
for in this Section 5 are not exclusive and shall not limit any rights or
remedies which may otherwise be available to any indemnified party at law or
in equity.

          The indemnity and contribution provisions contained in this Section
5 shall remain operative and in full force and effect regardless of (i) any
termination of this Agreement, (ii) any investigation made by or on behalf of
the Initial Purchasers, any Holder or any person controlling any Initial
Purchaser or any Holder, or by or on behalf of the Company, its officers or
directors or any person controlling the Company, (iii) acceptance of any of
the Exchange Certificates and (iv) any sale of Registrable Certificates
pursuant to a Shelf Registration Statement.

          6. Miscellaneous. (a) Rule 144 and Rule 144A. For so long as
Amtran, Inc. is subject to the reporting requirements of Section 13 or 15 of
the 1934 Act, the Company covenants that it will cause Amtran, Inc. to file
the reports required to be filed by it under Section 13(a) or 15(d) of the
1934 Act and the rules and regulations adopted by the SEC thereunder, that if
it ceases to be so required to file such reports, it will upon the request of
any Holder of Registrable Certificates (i) make publicly available such
information as is necessary to permit sales pursuant to Rule 144 under the
1933 Act, (ii) deliver (and cause Amtran Inc. to deliver) such information to
a prospective purchaser as is necessary to permit sales pursuant to Rule 144A
under the 1933 Act, and (iii) take such further action that is reasonable in
the circumstances, in each case, to the extent required from time to time to
enable such Holder to sell its Registrable Certificates without registration
under the 1933 Act within the limitation of the exemptions provided by (x)
Rule 144 under the 1933 Act, as such Rule may be amended from time to time,
(y) Rule 144A under the 1933 Act, as such Rule may be amended from time to
time, or (z) any similar rules or regulations hereafter adopted by the SEC.
Upon the reasonable request of any Holder of Registrable Certificates, the
Company will deliver to such Holder a written statement as to whether it has
complied with such requirements.

<PAGE>

                                                                           21

          (b) Purchase and Sale of Certificates. The Company shall not, and
the Company shall use its reasonable best efforts to cause its affiliates (as
defined in Rule 405 under the 1933 Act) not to, purchase and then resell or
otherwise transfer any Initial Certificates.

          (c) Trustees. The Trustees shall take such action as may be
reasonably requested by the Company in connection with the Company satisfying
its obligations arising under this Agreement; provided that the Company shall
provide to the Trustee (as Trustee and in its individual capacity) such
indemnity in connection therewith as the Trustee may reasonably request,
subject to any separate fee arrangement between the Company and the Trustee.

          (d) No Inconsistent Agreements. The Company has not entered into
nor will the Company on or after the date of this Agreement enter into any
agreement which is inconsistent with the rights granted to the Holders of
Registrable Certificates in this Agreement or otherwise conflicts with the
provisions hereof.

          (e) Amendments and Waivers. Except as otherwise expressly permitted
in the Pass Through Trust Agreements or the Successor Pass Through Trust
Agreements, the provisions of this Agreement, including the provisions of
this sentence, may not be amended, modified or supplemented, and waivers or
consents to departures from the provisions hereof may not be given unless the
Company has obtained the written consent of Holders of at least a majority in
aggregate principal amount of the outstanding Registrable Certificates
affected by such amendment, modification, supplement, waiver or departure;
provided, however, that no amendment, modification, supplement or waiver or
consent to any departure from the provisions of Section 5 hereof shall be
effective as against any Holder of Registrable Certificates unless consented
to in writing by such Holder.

          (f) Notices. All notices and other communications provided for or
permitted hereunder shall be made in writing by hand-delivery, registered
first-class mail, telex, telecopier, or any courier guaranteeing overnight
delivery (i) if to a Holder, at the most current address given by such Holder
to the Company by means of a notice given in accordance with the provisions
of this Section 6(f), which address initially is, with respect to the Initial
Purchasers, the address set forth in the Purchase Agreement; and (ii) if to
the Company, initially at the Company's address set forth in the Purchase
Agreement and thereafter at such other address, notice of which is given in
accordance with the provisions of this Section 6(f).

          All such notices and communications shall be deemed to have been
duly given when received or, if made by facsimile or telecommunication
transmission, when received unless received outside of business hours, in
which case on the next open of business on a Business Day.

          Copies of all such notices, demands, or other communications shall
be concurrently delivered by the person giving the same to the Trustees, at
the address specified in the Pass Through Trust Agreements or the Successor
Pass Through Trust Agreements, as the case may be.

          (g) Successors and Assigns. This Agreement shall inure to the
benefit of and be binding upon the successors, assigns and transferees of
each of the parties,

<PAGE>

                                                                           22

including, without limitation and without the need for an express assignment,
subsequent Holders; provided that nothing herein shall be deemed to permit
any assignment, transfer or other disposition of Registrable Certificates in
violation of the terms hereof or of the Purchase Agreement or the Pass
Through Trust Agreements or Successor Pass Through Trust Agreements. If any
transferee of any Holder shall acquire Registrable Certificates, in any
manner, whether by operation of law or otherwise, such Registrable
Certificates shall be held subject to all of the terms of this Agreement, and
by taking and holding such Registrable Certificates, such Person shall be
conclusively deemed to have agreed to be bound by and to perform all of the
terms and provisions of this Agreement, including the restrictions on resale
set forth in this Agreement and, if applicable, the Purchase Agreement, and
such Person shall be entitled to receive the benefits hereof. Upon the
occurrence of the transfers contemplated by the Assignment and Assumption
Agreements (as defined in the Pass Through Trust Agreements), the trustee of
each Original Trust shall (without any further act) be deemed to have
transferred all of its rights, title and interest in and to this Agreement to
the trustee of the corresponding Successor Trust and, thereafter, the trustee
of each Successor Trust shall be deemed to be the "Trustee" of such Successor
Trust with the rights and obligations of a "Trustee" hereunder. The Initial
Purchasers (in their capacity as Initial Purchasers) shall have no liability
or obligation to the Company with respect to any failure by any other Holder
to comply with, or any breach by any other Holder of, any of the obligations
of such other Holder under this Registration Rights Agreement.

          (h) Third Party Beneficiaries. The Holders shall be third party
beneficiaries to the agreements made hereunder and to the obligations of the
Company hereunder and shall have the right to enforce such agreements and
obligations directly to the extent any such Holder deems such enforcement
necessary or advisable to protect the rights expressed to be for its benefit
hereunder.

          (i) Counterparts. This Agreement may be executed in any number of
counterparts and by the parties hereto in separate counterparts, each of
which when so executed shall be deemed to be an original and all of which
taken together shall constitute one and the same agreement.

          (j) Headings. The headings in this Agreement are for convenience of
reference only and shall not limit or otherwise affect the meaning hereof.

          (k) GOVERNING LAW. THIS AGREEMENT SHALL BE GOVERNED BY AND
CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK.

          (l) Severability. In the event that any one or more of the
provisions contained herein, or the application thereof in any circumstance,
is held invalid, illegal or unenforceable, the validity, legality and
enforceability of any such provision in every other respect and of the
remaining provisions contained herein shall not be affected or impaired
thereby.

          (m) Limitation of Trustee Liability. It is expressly understood and
agreed by the parties hereto that (a) this Agreement is executed and
delivered by Wilmington Trust Company, not individually or personally but
solely as Trustee, in the exercise of the powers and authority conferred and
vested in it in such capacity, (b) each of the representations, undertakings
and agreements herein made on the part of the

<PAGE>

                                                                           23

Trustee is made and intended not as personal representations, undertakings
and agreements by Wilmington Trust Company but is made for the purpose of
binding only the Trustee and (c) under no circumstances shall Wilmington
Trust Company be personally liable for the payment of any indebtedness or
expenses of the Trustee or be liable for the breach or failure of any
obligation, representation, warranty or covenant made or undertaken by the
Trustee under this Agreement or any related documents.

<PAGE>

                                                                           24

          IN WITNESS WHEREOF, the parties have executed this Agreement as of
the date first written above.

                                        AMERICAN TRANS AIR, INC.

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

                                        WILMINGTON TRUST COMPANY,
                                         not in its individual capacity but
                                         solely as Trustee under each of the
                                         Original Trusts

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

Confirmed and accepted as of
the date first written above:

SALOMON SMITH BARNEY INC.
BANC ONE CAPITAL MARKETS, INC.
CHASE SECURITIES INC.
MORGAN STANLEY & CO. INCORPORATED

By:  SALOMON SMITH BARNEY INC.

     By:
         ---------------------------
         Name:
         Title:EXHIBIT 4.13

 ______________________________________________________________________________

                               DEPOSIT AGREEMENT
                                   (Class G)

                         Dated as of February 15, 2000

                                    between

                   FIRST SECURITY BANK, NATIONAL ASSOCIATION
                                as Escrow Agent

                                      and

                                CITIBANK, N.A.

                                 as Depositary

 ______________________________________________________________________________

<PAGE>

          DEPOSIT AGREEMENT (Class G) dated as of February 15, 2000 (as
amended, modified or supplemented from time to time, this "Agreement") between
FIRST SECURITY BANK, NATIONAL ASSOCIATION, a national banking association, as
Escrow Agent under the Escrow and Paying Agent Agreement referred to below (in
such capacity, together with its successors in such capacity, the "Escrow
Agent"), and CITIBANK, N.A., as depositary bank hereunder (the "Depositary").

                              W I T N E S S E T H

          WHEREAS, American Trans Air, Inc. ("ATA"), Amtran, Inc. ("Amtran")
and Wilmington Trust Company, not in its individual capacity except as
otherwise expressly provided therein, but solely as trustee (in such capacity,
together with its successors in such capacity, the "Pass Through Trustee")
have entered into a Pass Through Trust Agreement dated as of February 15, 2000
(as amended, modified or supplemented from time to time in accordance with the
terms thereof, the "Pass Through Trust Agreement") relating to American Trans
Air 2000-1G-O Pass Through Trust pursuant to which the American Trans Air Pass
Through Trust, Series 2000-1G-O Certificates referred to therein (the
"Certificates") are being issued;

          WHEREAS, ATA, Amtran and Salomon Smith Barney Inc., Morgan Stanley &
Co. Incorporated, Chase Securities Inc., and Banc One Capital Markets, Inc.
(together, the "Initial Purchasers" and, together with their transferees and
assigns as registered owners of the Certificates, the "Investors") have
entered into a Purchase Agreement dated as of February 8, 2000 (the "Purchase
Agreement") pursuant to which the Pass Through Trustee will issue and sell the
Certificates to the Initial Purchasers;

          WHEREAS, ATA, Amtran, the Pass Through Trustee, certain other pass
through trustees and certain other persons concurrently herewith are entering
into the Note Purchase Agreement, dated as of the date hereof (the "Note
Purchase Agreement"), pursuant to which the Pass Through Trustee utilizing a
portion of the proceeds from the sale of the Certificates (the "Net Proceeds")
has agreed to acquire from time to time on or prior to the Delivery Period
Termination Date (as defined in the Note Purchase Agreement) equipment notes
(the "Equipment Notes") issued to finance or refinance the acquisition of
aircraft by ATA, as lessee or as owner;

          WHEREAS, the Escrow Agent, the Initial Purchasers, the Pass Through
Trustee and Wilmington Trust Company, as paying agent for the Escrow Agent (in
such capacity, together with its successors in such capacity, the "Paying
Agent") concurrently herewith are entering into an Escrow and Paying Agent
Agreement (Class G), dated as of the date hereof (as amended, modified or
supplemented from time to time in accordance with the terms thereof, the
"Escrow and Paying Agent Agreement"); and

<PAGE>

                                                                             2

          WHEREAS, the Initial Purchasers and the Pass Through Trustee intend
that the Net Proceeds be held in escrow by the Escrow Agent on behalf of the
Investors pursuant to the Escrow and Paying Agent Agreement, subject to
withdrawal upon request of and proper certification by the Pass Through
Trustee for the purpose of purchasing Equipment Notes, and that pending such
withdrawal the Net Proceeds be deposited by the Escrow Agent with the
Depositary pursuant to this Agreement, which provides for the Depositary to
pay interest for distribution to the Investors and to establish accounts from
which the Escrow Agent shall requisition or demand withdrawals upon request of
and proper certification by the Pass Through Trustee.

          NOW, THEREFORE, in consideration of the obligations contained
herein, and for other good and valuable consideration, the receipt and
sufficiency of which is hereby acknowledged, the parties hereto hereby
agree as follows:

          SECTION 1.1 Acceptance of Depositary. The Depositary hereby agrees
to act as depositary bank as provided herein and in connection therewith to
accept all amounts to be delivered to or held by the Depositary pursuant to
the terms of this Agreement. The Depositary further agrees to hold, maintain
and safeguard the Deposits and the Accounts (as defined below) during the term
of this Agreement in accordance with the provisions of this Agreement. The
Depositary shall neither be responsible for or under, nor chargeable with
knowledge of, the terms and conditions of any other agreement, instrument or
document executed between and among the parties hereto, except as may be
specifically provided in Schedule I and Exhibits A, B and C, defined below and
annexed hereto. This Agreement sets forth all of the obligations of the
Depositary, and no additional obligations shall be implied from the terms of
this Agreement or any other agreement, instrument or document. The Escrow
Agent shall not have any right to withdraw, assign or otherwise transfer
moneys held in the Accounts except as permitted by this Agreement.

          SECTION 1.2 Establishment of Accounts. The Escrow Agent hereby
instructs the Depositary, and the Depositary agrees, to establish (i) the
separate deposit accounts listed on Schedule I hereto required in connection
with the deposits contemplated by Section 2.1 hereof (each, an "Account" and
collectively, the "Accounts"), and (ii) such additional separate deposit
accounts as may be required in connection with the deposits contemplated by
Section 2.4 hereof (each, also an "Account") in each case, in the name of the
Escrow Agent and all on the terms and conditions set forth in this Agreement.

          SECTION 2.1 Deposits. The Escrow Agent shall direct the Initial
Purchasers to deposit with the Depositary on the date of this Agreement (the
"Deposit Date") in immediately available funds by wire transfer to the account
of Citibank, N.A. at Citibank, N.A., 111 Wall Street, 5th Floor, Zone 2, New
York, New York 10005, ABA #021000089, Account No. 3611-4325, Attention:
Global Agency & Trust Services, Reference: American Trans Air 2000-1G, and the
Depositary shall accept from the Initial Purchasers, on behalf of the Escrow
Agent, the sum of US$201,901,000. Upon acceptance of such sum, the Depositary
shall (i) establish each of the deposits specified in Schedule I hereto
maturing on June 27, 2001 (including any deposit made pursuant to Section 2.4
hereof, individually, a "Deposit" and, collectively, the "Deposits") and (ii)
credit each Deposit to the related Account as set forth therein. No amount
shall be deposited in any Account other than the related Deposit.

          SECTION 2.2 Interest. (a) Each Deposit shall bear interest from and
including the date of deposit to but excluding the date of withdrawal at the
rate of 8.039% per annum payable to the Paying Agent on behalf of the Escrow
Agent quarterly in arrears on each January 15, April 15, July 15 and October
15, and on the date of the Final Withdrawal (as defined below), commencing on
April 15, 2000 (each, an "Interest Payment Date"), all in accordance with the
terms of this Agreement (whether or not any such Deposit is withdrawn on an
Interest Payment Date). Interest accrued on any Deposit that is withdrawn
pursuant to a Notice of Purchase

<PAGE>

                                                                             3

Withdrawal (as defined below) shall be paid on the next Interest Payment Date,
notwithstanding any intervening Final Withdrawal (as defined below).

          In addition, interest accrued on any Deposit that is withdrawn
pursuant to a Notice of Replacement Withdrawal (as defined below) but not paid
on the date of the Final Withdrawal shall be paid on the next Interest Payment
Date.

          (b) The parties hereto further acknowledge and agree that upon any
increase in the rate of interest on the Certificates (such increase referred
to as a "Rate Increase") pursuant to the terms of the Registration Rights
Agreement, the rate of interest borne by each Deposit in accordance with
Section 2.2 (a) above shall increase by the amount of such Rate Increase, and
upon any subsequent decrease in the rate of interest of the Equipment Notes
(such decrease referred to as a "Rate Decrease") pursuant to the terms of the
Registration Rights Agreement, the rate of interest borne by such Deposit
shall decrease by the amount of such Rate Decrease. For the purposes of this
Section 2.2(b), "Registration Rights Agreement" means the Exchange and
Registration Rights Agreement dated the date hereof among ATA, the Pass
Through Trustee, certain other pass through trustees and the Initial
Purchaser.

          SECTION 2.3 Withdrawals. (a) On and after the date seven days after
the establishment of any Deposit, the Escrow Agent may, by providing at least
one Business Day's prior notice of withdrawal to the Depositary in the form of
Exhibit A hereto (a "Notice of Purchase Withdrawal"), request withdrawal of
the entire balance of such Deposit, except that at any time prior to the
actual withdrawal of such Deposit, the Escrow Agent or the Pass Through
Trustee may, by notice to the Depositary, cancel such withdrawal (including on
the scheduled date therefor), and thereafter such Deposit shall continue to be
maintained by the Depositary in accordance with the original terms thereof.
Following such withdrawal the balance in the related Account shall be zero and
the Depositary shall close such Account. As used herein, "Business Day" means
any day, other than a Saturday, Sunday or other day on which commercial banks
are authorized or required by law to close in New York, New York,
Indianapolis, Indiana, Wilmington, Delaware or Salt Lake City, Utah.

          (b) (i) The Escrow Agent may, by providing at least 20 days' prior
notice of withdrawal to the Depositary in the form of Exhibit B hereto (a
"Notice of Final Withdrawal"), request withdrawal of the entire amount of all
of the remaining Deposits together with the payment by the Depositary of all
accrued and unpaid interest earned on such Deposits to but excluding the
specified date of withdrawal (a "Final Withdrawal"), on such date as shall be
specified in such Notice of Final Withdrawal. If a Notice of Final Withdrawal
has not been given to the Depositary on or before June 6, 2001 and there are
unwithdrawn Deposits on such date, the Depositary shall pay the amount of the
Final Withdrawal to the Paying Agent on June 27, 2001.

          (ii) The Escrow Agent may, by providing at least 15 days' prior
     notice of withdrawal to the Depositary in the form of Exhibit C hereto (a
     "Notice of Replacement Withdrawal"), request withdrawal of the entire
     amount of all Deposits then held by the Depositary together with, if
     specified in such Notice of Replacement Withdrawal, the payment by

<PAGE>

                                                                             4

     the Depositary of all accrued and unpaid interest on such Deposits to but
     excluding the specified date of withdrawal (a "Replacement Withdrawal"),
     on such date as shall be specified in such Notice of Replacement
     Withdrawal.

          (c) If the Depositary receives a duly completed Notice of Purchase
Withdrawal or Notice of Final Withdrawal or Notice of Replacement Withdrawal
(each, a "Withdrawal Notice") complying on their face with the provisions of
this Agreement, it shall make the payments specified therein in accordance
with the provisions of this Agreement.

          If such complying Withdrawal Notice is received by the Depositary no
later than 3:00 p.m. on a Business Day, the Depositary shall make the payments
requested in such Withdrawal Notice no later than 11:00 a.m. on the next
succeeding Business Day or such later day specified in such Withdrawal Notice,
and if such complying Withdrawal Notice is received by the Depositary after
3:00 p.m. on a Business Day, the Depositary shall make the payments requested
in such Withdrawal Notice no later than 11:00 a.m. on the second Business Day
next following such Business Day.

          SECTION 2.4 Other Accounts. On the date of withdrawal of any Deposit
(pursuant to a Notice of Purchase Withdrawal), the Escrow Agent, or the Pass
Through Trustee on behalf of the Escrow Agent, shall be entitled to re-deposit
with the Depositary any portion thereof and the Depositary shall accept the
same for deposit hereunder. Any sums so received for deposit shall be
established as a new Deposit and credited to a new Account, all as more fully
provided in Section 2.1 hereof, and thereafter the provisions of this
Agreement shall apply thereto as fully and with the same force and effect as
if such Deposit had been established on the Deposit Date except that (i) such
Deposit may not be withdrawn prior to the date seven days after the
establishment thereof and (ii) such Deposit shall mature on June 27, 2001, and
bear interest as provided in Section 2.2. The Depositary shall promptly give
notice to the Escrow Agent of receipt of each such re-deposit and the Account
number assigned thereto.

          SECTION 3. Termination. (a) This Agreement shall terminate on the
fifth Business Day after the later of the date on which (i) all of the
Deposits shall have been withdrawn and paid as provided herein without any
re-deposit of such funds being made and (ii) all accrued and unpaid interest
earned on the Deposits shall have been paid as provided herein, but in no
event prior to the date on which the Depositary shall have performed in full
its obligations hereunder.

          (b) For the avoidance of doubt, the obligations of the Depositary
under the last two sentences of Section 2.2(a) hereof shall remain in full
force and effect notwithstanding the execution and delivery of a replacement
Deposit Agreement in accordance with Section 4(a)(vii) of the Note Purchase
Agreement.

          SECTION 4. Payments. All payments (including, without limitation,
those payments made in respect of Taxes (as defined and provided for below))
made by the Depositary hereunder shall be paid in United States Dollars and in
immediately available funds by wire transfer (i) in the case of accrued
interest on the Deposits payable under Section 2.2 hereof or any Final
Withdrawal, directly to the Paying Agent at Wilmington Trust Company,
Wilmington, DE, ABA # 031-100-092, Account No. 50986-0, Attention: David
Vanasky, Reference: American Trans Air 2000-1G, or to such other account as
the Paying Agent may direct from time to time in

<PAGE>

                                                                             5

writing to the Depositary and the Escrow Agent and (ii) in the case of any
withdrawal of one or more Deposits pursuant to a Notice of Purchase Withdrawal
or Notice of Replacement Withdrawal, directly to or as directed by the Pass
Through Trustee as specified and in the manner provided in such Notice of
Purchase Withdrawal or Notice of Replacement Withdrawal. The Depositary hereby
waives any and all rights of set-off, combination of accounts, right of
retention or any similar right (whether arising under applicable law, contract
or otherwise) it may against the Deposits howsoever arising. All payments on
or in respect of each Deposit shall be made free and clear of and without
reduction for or on account of any and all taxes, levies or other impositions
or charges (collectively, "Taxes"). However, if the Depositary or the Paying
Agent (pursuant to Section 2.04 of the Escrow and Paying Agent Agreement)
shall be required by law to deduct or withhold any Taxes from or in respect of
any sum payable hereunder, the Depositary shall (i) make such deductions or
withholding and (ii) pay the full amount deducted or withheld (including in
respect of such additional amounts) to the relevant taxation authority. If the
date on which any payment due on any Deposit would otherwise fall on a day
which is not a Business Day, such payment shall be made on the next succeeding
Business Day, and no additional interest shall accrue in respect of such
extension.

          SECTION 5. Representation and Warranties. The Depositary hereby
represents and warrants to ATA, the Escrow Agent, the Pass Through Trustee and
the Paying Agent that:

          (a) it is a national banking association duly organized and existing
     under the laws of the United States;

          (b) it has full power, authority and legal right to conduct its
     business and operations as currently conducted and to enter into and
     perform its obligations under this Agreement;

          (c) the execution, delivery and performance of this Agreement have
     been duly authorized by all necessary corporate action on the part of it
     and do not require any stockholder approval, or approval or consent of
     any trustee or holder of any indebtedness or obligations of it, and this
     Agreement has been duly executed and delivered by it and constitutes its
     legal, valid and binding obligations enforceable against it in accordance
     with the terms hereof; and

          (d) no authorization, consent or approval of or other action by, and
     no notice to or filing with, any United States federal or state
     governmental authority or regulatory body is required for the execution,
     delivery or performance by it of this Agreement.

          SECTION 6. Transfer. Neither party hereto shall be entitled to
assign or otherwise transfer this Agreement (or any interest herein) other
than (in the case of the Escrow Agent) to a successor escrow agent under the
Escrow and Paying Agent Agreement, and any purported assignment in violation
thereof shall be void. This Agreement shall be binding upon the parties hereto
and their respective successors and (in the case of the Escrow Agent)
permitted assigns. Upon the occurrence of the Transfer (as defined below)
contemplated by the Assignment and Assumption Agreement (as defined below),
the Pass Through Trustee shall (without further act) be deemed to have
transferred all of its right, title and interest in and to this Agreement to
the trustee of the Successor Trust (as defined below) and, thereafter, the
trustee of the Successor Trust shall be deemed to be the "Pass Through
Trustee" hereunder with the rights of the "Pass Through Trustee" hereunder,
and each reference herein to American Trans Air 2000-

<PAGE>

                                                                             6

1G-O Pass Through Trust" shall be deemed to be a reference to "American Trans
Air 2000-1G-S Pass Through Trust". The Escrow Agent and the Depositary hereby
acknowledge and consent to the Transfer contemplated by the Assignment and
Assumption Agreement. For the purposes of this Section 6, "Transfer" means the
transfer contemplated by the Assignment and Assumption Agreement; "Assignment
and Assumption Agreement" means the Assignment and Assumption Agreement to be
entered into between the Pass Through Trustee and the trustee of the Successor
Trust, substantially in the form of Exhibit D to the Pass Through Trust
Agreement; and "Successor Trust" means the American Trans Air 2000-1G-S Pass
Through Trust.

          SECTION 7. Amendment, Etc. This Agreement may not be amended, waived
or otherwise modified except by an instrument in writing signed by the parties
hereto.

          SECTION 8. Notices. (a) Unless otherwise expressly provided herein,
any notice, instruction or other communication under this Agreement shall be
in writing (including by facsimile) and shall be deemed to be given and
effective upon receipt thereof. All notices shall be sent to (x) in the case
of the Depositary, Citibank, N.A., 111 Wall Street, 5th Floor, Zone 2, New
York, New York 10005, Attention: Global Agency & Trust Services (Telecopier:
(212- 657-3866) and with a copy to Citibank, N.A., 399 Park Avenue 12/2, New
York, New York 10043, Attention: Global Aviation (Telecopier: (212-793-1246)
or (y) in the case of the Escrow Agent, First Security Bank, National
Association, 79 South Main Street, 3rd Floor, Salt Lake City, UT 84111,
Attention: Corporate Trust Services (Telecopier: (801) 246-5053), in each
case, with a copy to the Pass Through Trustee, Wilmington Trust Company, 1100
North Market Street, Wilmington, DE 19890, Attention: Corporate Trust
Administration (Telecopier: (302) 651- 8882) and to ATA, 7337 West Washington
Street, Attention: Kenneth K. Wolff, Chief Financial Officer (Telecopier:
(317) 240-7091) (or at such other address as any such party may specify from
time to time in a written notice to the parties hereto). On or prior to the
execution of this Agreement, the Escrow Agent has delivered to the Depositary
an incumbency certificate containing specimen signatures of the
representatives of the Escrow Agent who are authorized to give notices and
instructions with respect to this Agreement. The Depositary may conclusively
rely on such certificate until the Depositary receives written notice from the
Escrow Agent to the contrary.

          (b) The Depositary shall be fully protected and authorized in
relying upon any instruction, notice, certification, demand, consent,
authorization, receipt, power of attorney or other writing delivered to it by
any party without being required to make any investigation or inquiry thereof,
determine the authenticity or validity thereof or the correctness of any fact
stated therein, the propriety or validity of the service thereof, or the
jurisdiction of the court issuing any judgment or order. The Depositary may
act in reliance upon any signature believed by it to be genuine, and may
assume that such person has been properly authorized to do so. The Depositary
shall not be deemed to have any duty or notice unless and until it has been
provided with written notice.

<PAGE>

                                                                             7

          SECTION 9. Obligations Unconditional. The Depositary hereby
acknowledges and agrees that its obligation to repay each Deposit together
with interest earned thereon as provided herein is absolute, irrevocable and
unconditional and constitutes a full recourse obligation of the Depositary
enforceable against it to the full extent of all of its assets and properties.
Anything to the contrary notwithstanding, the Depositary may consult with
legal counsel of its selection in the event of any dispute, or question as to
the meaning or construction of any of the provisions hereof or its duties
hereunder, and it shall incur no liability and shall be fully authorized and
protected in acting in accordance with the opinion and instructions of such
counsel.

          SECTION 10. Funds Transfers. In the event funds transfer instructions
are given (other than in writing at the time of execution of this Agreement),
whether in writing, by telecopier or otherwise, the Depositary is authorized
to seek confirmation of such instructions by telephone call back to the person
or persons designated, and the Depositary may rely upon the confirmations of
anyone purporting to be the person or persons so designated. To assure
accuracy of the instructions it receives, the Depositary may record such
telephone call backs. If the Depositary is unable to confirm any instructions,
or if not satisfied with the confirmation it receives, it will not execute the
instruction until all issues have been resolved. The person and telephone
numbers for call backs may be changed only in writing actually received and
acknowledged by the Depositary. The Depositary shall receive notification of
any errors, delays or other problems within thirty (30) days after a
transaction has been executed.

          SECTION 11. Entire Agreement. This Agreement (including all
attachments hereto) sets forth all of the promises, covenants, agreements,
conditions and understandings between the Depositary and the Escrow Agent with
respect to the subject matter hereof and supersedes all prior and
contemporaneous agreements and undertakings, inducements or conditions,
express or implied, oral or written.

          SECTION 12. Governing Law. This Agreement, and the rights and
obligations of the Depositary and the Escrow Agent with respect to the
Deposits, shall be governed by, and entirely construed in accordance with, the
laws of the State of New York and subject to the provisions of Regulation D of
the Board of Governors of the Federal Reserve System (or any successor), as
the same may be modified and supplemented and in effect from time to time.

          SECTION 13. Waiver of Jury Trial Right. EACH OF THE DEPOSITARY AND
THE ESCROW AGENT ACKNOWLEDGES AND ACCEPTS THAT IN ANY SUIT, ACTION OR
PROCEEDING ARISING OUT OF OR RELATING TO THIS AGREEMENT SUCH PARTY IRREVOCABLY
WAIVES ITS RIGHT TO A TRIAL BY JURY.

          SECTION 14. Counterparts. This Agreement may be executed in one or
more counterparts, all of which taken together shall constitute one
instrument.

<PAGE>

                                                                             8

          SECTION 15. Rule 144A(d)(4) Information. So long as any of the
Offered Certificates (as defined in the Purchase Agreement) are "restricted
securities" within the meaning of Rule 144(a)(3) under the Securities Act of
1933, as amended (the "Securities Act"), at any time when the Depositary is
neither subject to Section 13 or 15(d) of the Securities Exchange Act of 1934,
as amended (the "Exchange Act"), nor exempt from reporting pursuant to Rule
12g3-2(b) under the Exchange Act, the Depositary will provide to any holder
of such restricted securities designated by a holder, upon the request of such
holder or prospective purchaser, any information required to be delivered (and
is made available to the Depositary for such purpose) to holders and
prospective purchasers of the Offered Certificates pursuant to Rule 144A(d)(4)
under the Securities Act.

<PAGE>

                                                                             9

          IN WITNESS WHEREOF, the Escrow Agent and the Depositary have caused
this Deposit Agreement (Class G) to be duly executed as of the day and year
first above written.

                                         FIRST SECURITY BANK, NATIONAL
                                         ASSOCIATION,
                                             as Escrow Agent

                                         By________________________________
                                           Name:
                                           Title:

                                         CITIBANK, N.A.,
                                               as Depositary

                                         By________________________________
                                           Name:
                                           Title:

                               Deposit Agreement

<PAGE>

                                                                            10

                                                                    Schedule I

                             Schedule of Deposits
                                   (Class G)

   Date             Tail No.       Deposit Amount      Account No.

   2-15-00          N515AT         $23,022,375
   2-15-00          N523AT         $28,414,805
   2-15-00          N524AT         $28,413,820
   2-15-00          N525AT         $30,225,000
   2-15-00          N526AT         $30,225,000
   2-15-00          N527AT         $30,800,000
   2-15-00          N528AT         $30,800,000

                               Deposit Agreement

<PAGE>

                                                                            11

                                                                     EXHIBIT A

                         NOTICE OF PURCHASE WITHDRAWAL

Citibank, N.A.
111 Wall Street, 5th Floor, Zone 2
New York, New York 10005
Attention: Global Agency & Trust Services
(Telecopier:  (212-657-3866)

Gentlemen:

          Reference is made to (i) the Deposit Agreement (Class G) dated as of
February 15, 2000 (the "Deposit Agreement") between First Security Bank,
National Association, as Escrow Agent, and Citibank, N.A., as Depositary (the
"Depositary").

          In accordance with Section 2.3(a) of the Deposit Agreement, the
undersigned hereby requests the withdrawal of the entire amount of the
Deposit, $_______, Account No. ____________.

          The undersigned hereby directs the Depositary to pay the proceeds of
the Deposit to [________________, Account No. _____, Reference: _________] on
_________ __, 2000, upon the telephonic request of a representative of
Wilmington Trust Company, the Pass Through Trustee.

                                             FIRST SECURITY BANK,
                                              NATIONAL ASSOCIATION,
                                              as Escrow Agent

                                              By ___________________
                                                 Name:
                                                 Title:

Dated: _______ __, ____

                               Deposit Agreement

<PAGE>

                                                                            12

                                                                     EXHIBIT B

                          NOTICE OF FINAL WITHDRAWAL

Citibank, N.A.
111 Wall Street, 5th Floor, Zone 2
New York, New York 10005
Attention: Global Agency & Trust Services
(Telecopier:  (212-657-3866)

Gentlemen:

          Reference is made to (i) the Deposit Agreement (Class G) dated as of
February 15, 2000 (the "Deposit Agreement") between First Security Bank,
National Association, as Escrow Agent, and Citibank, N.A., as Depositary (the
"Depositary").

          In accordance with Section 2.3(b) of the Deposit Agreement, the
undersigned hereby requests the withdrawal of the entire amount of all
Deposits (as defined in the Deposit Agreement).

          The undersigned hereby directs the Depositary to pay the proceeds of
the Deposits and accrued interest earned thereon to the Paying Agent at
Wilmington Trust Company, ABA # 031-100-092, Account No. 50986-0, Reference:
American Trans Air 2000-1G.

                                             FIRST SECURITY BANK,
                                              NATIONAL ASSOCIATION,
                                              as Escrow Agent

                                              By ___________________
                                                 Name:
                                                 Title:

Dated: _______ __, ____

                               Deposit Agreement

<PAGE>

                                                                            13

                                                                     EXHIBIT C

                       NOTICE OF REPLACEMENT WITHDRAWAL

Citibank, N.A.
111 Wall Street, 5th Floor, Zone 2
New York, New York 10005
Attention: Global Agency & Trust Services
(Telecopier:  (212-657-3866)

Gentlemen:

          Reference is made to the Deposit Agreement (Class G) dated as of
February 15, 2000 (the "Deposit Agreement") between First Security Bank,
National Association, as Escrow Agent, and Citibank, N.A., as Depositary (the
"Depositary").

          In accordance with Section 2.3(b)(ii) of the Deposit Agreement, the
undersigned hereby requests the withdrawal of the entire amount of all
Deposits for payment on _______________, 200__.

          The undersigned hereby directs the Depositary to pay the proceeds of
the Deposits to [________________] at __________________________, ABA#
_____________, Account No. _____________, Reference: American Trans Air 2000-1
[and to pay accrued interest earned thereon to the Paying Agent at
___________, ABA #___________, Acct. No. ___________, Reference: American
Trans Air 2000-1]. [The undersigned further directs the Depositary to pay the
accrued interest earned on the Deposits to the Paying Agent on _______, __
(the next Interest Payment Date) at ABA # ___________, Account No. __________,
Reference: American Trans Air 2000-1.]

                                             FIRST SECURITY BANK,
                                              NATIONAL ASSOCIATION,
                                              as Escrow Agent

                                              By ___________________
                                                 Name:
                                                 Title:

Dated: _________, 200_

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