Document:

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                                                                  EXECUTION COPY

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                                DEPOSIT AGREEMENT
                                    (Class B)

                           Dated as of March 28, 2002

                                     between

                WELLS FARGO BANK NORTHWEST, NATIONAL ASSOCIATION
                                 as Escrow Agent

                                       and

                      INTESABCI S.P.A., acting through its
                                NEW YORK BRANCH,
                                  as Depositary

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

<PAGE>

             DEPOSIT AGREEMENT (Class B) dated as of March 28, 2002 (as amended,
modified or supplemented from time to time, this "Agreement") between WELLS
FARGO BANK NORTHWEST, 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 INTESABCI S.P.A, acting through its NEW YORK BRANCH, as depositary
bank hereunder (the "Depositary").

                               W I T N E S S E T H
                               - - - - - - - - - -

             WHEREAS, American Trans Air, Inc. ("ATA") has entered into a
Certificate Purchase Agreement dated as of March 26, 2002 (as amended, modified
or supplemented from time to time in accordance with the terms thereof, the
"Certificate Purchase Agreement") with Amtran, Inc. ("Amtran") and PK AirFinance
US, Inc. (the "Purchaser", and together with its transferees and assigns as
owners of the Certificates, the "Investors") which provides for the purchase of
the American Trans Air Pass Through Trust, Series 2002-1B Certificates (the
"Certificates");

             WHEREAS, ATA, Amtran and Wilmington Trust Company have entered into
a Pass Through Trust Agreement dated as of March 28, 2002 (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 2002-1B Pass
Through Trust pursuant to which the Certificates are being issued;

             WHEREAS, ATA, Amtran, the Pass Through Trustee and certain other
persons concurrently herewith are entering into the Note Purchase Agreement,
dated as of the date hereof (as amended, modified or supplemented from time to
time in accordance with the terms thereof, 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 certain aircraft by ATA, as
lessee or as owner;

             WHEREAS, the Escrow Agent, the Purchaser, 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 B), 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

             WHEREAS, the Purchaser 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

<PAGE>
                                      -2-

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 to which it is not a party, other than Section 4(a)(vii) of the Note
Purchase Agreement. 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 Purchaser
to deposit with the Depositary on the date of this Agreement (the "Deposit
Date") in immediately available funds by wire transfer to the Depositary at One
William Street, New York, NY 10004, ABA #026005319, Attention: Paul Florcruz,
Reference: American Trans Air 2002-1B, and the Depositary shall accept from the
Purchaser, on behalf of the Escrow Agent, the Net Proceeds in the amount of
US$24,391,148.66. Upon acceptance of such amount, the Depositary shall (i)
establish each of the deposits specified in Schedule I hereto maturing on the
date set forth in Schedule I hereto, (including any deposit made pursuant to
Section 2.4 hereof, individually, a

<PAGE>
                                      -3-

"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. Each Deposit shall bear interest from and
including the date of deposit to but excluding the date of withdrawal at the
rate of 10.699% per annum (calculated on the basis of a year of twelve 30-day
months) payable to the Paying Agent on behalf of the Escrow Agent quarterly in
arrears on each February 20, May 20, August 20 and November 20 (each, an
"Interest Payment Date") and on the date of each Prepayment Withdrawal and the
Final Withdrawal (as defined below), commencing on May 20, 2002 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 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 Replacement Withdrawal shall be paid on the next
Interest Payment Date.

             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 15 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 September 29, 2002 and there
are unwithdrawn Deposits on such date, the Depositary shall pay the amount of
the Final Withdrawal to the Paying Agent on October 14, 2002.

<PAGE>
                                        4

                 (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 the Replacement
Withdrawal occurs on an Interest Payment Date, the payment by 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.

                 (iii) The Escrow Agent may, by providing at least 15 days'
prior notice of withdrawal to the Depositary in the form of Exhibit D hereto (a
"Notice of Prepayment Withdrawal"), withdraw all or a portion of the Deposit
together with all accrued and unpaid interest thereon to but excluding the
specified date of withdrawal (a "Prepayment Withdrawal"), on such date as shall
be specified in such Notice of Prepayment Withdrawal. Following such withdrawal
the balance in the Account shall be reduced by the amount of the withdrawal.
Upon any Prepayment Withdrawal, the Depositary shall pay to the Paying Agent the
amount requested in the related Notice of Prepayment Withdrawal.

             (c) If the Depositary receives a duly completed Notice of Purchase
Withdrawal, Notice of Prepayment Withdrawal, Notice of Final Withdrawal or
Notice of Replacement Withdrawal (each, a "Withdrawal Notice") complying on its
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. (New York City time) on a Business Day, the Depositary
shall make the payments requested in such Withdrawal Notice no later than 11:00
a.m. (New York City time) 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. (New York City time) on a Business
Day, the Depositary shall make the payments requested in such Withdrawal Notice
no later than 11:00 a.m. (New York time) on the second Business Day next
following such Business Day or such later date specified in such Withdrawal
Notice.

             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 (or cause to be re-deposited) 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 the date
set forth in Schedule I hereto, and bear interest as provided in Section 2.2.

<PAGE>
                                        5

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
any portion thereof 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 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, any Prepayment Withdrawal or
any Final Withdrawal, directly to the Paying Agent at Wilmington Trust Company,
Wilmington, DE, ABA # 031-100-092, Account No. 57831-0, Attention: Jeanne Oller,
Reference: American Trans Air 2002-1B, or to such other account as the Paying
Agent may direct from time to time in 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 have against the
Deposits howsoever arising. Except as provided below, all payments on or in
respect of each Deposit shall be made by the Depositary 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, (ii) pay the full amount deducted or withheld
(including in respect of such additional amounts) to the relevant taxation
authority and (iii) if the Taxes required to be deducted or withheld are imposed
by the Republic of Italy or any political subdivision thereof, pay such
additional amounts as may be necessary in order that the actual amount received
by the designated recipient of such sum under this Agreement or the Escrow and
Paying Agent Agreement after such deduction or withholding equals the sum it
would have received had no such deduction or withholding been required. If the
date on which any payment

<PAGE>
                                        6

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, the
Investors and the Paying Agent that:

             (a) it is a banking corporation duly organized and existing under
       the laws of the Republic of Italy, acting through its New York branch;

             (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, except for administrative and ministerial filings which the
       Depositary is obligated to make in the ordinary course of its business,
       no notice to or filing with, any Italian or 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.

             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, IntesaBci S.p.A., New York Branch, Attention: Transportation Finance
Group (Telecopier: 212-607-3966) and with a copy to IntesaBci S.p.A.

<PAGE>
                                        7

New York Branch, One William Street, New York, NY 10004, Attention: Paul
Florcruz, Dealing Room (Telecopier: 212-422-6235) or (y) in the case of the
Escrow Agent, Wells Fargo Bank Northwest, 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, Rodney Square North, 1100 North Market
Street, Wilmington, DE 19890, Attention: Corporate Trust Administration
(Telecopier: (302) 636-4140), to ATA, 7337 West Washington Street, Attention:
Kenneth K. Wolff, Chief Financial Officer (Telecopier: (317) 240-7091) and to
the Purchaser, PK AirFinance US, Inc., 400 Madison Avenue, New York, NY 10017,
Attention: Vice-President-Marketing (Telecopier: 212-397-9393) with a copy to PK
AirFinance, S.A., European Bank and Business Center, 6D Route de Treves,
Senningerberg, 2633 Luxembourg, Attention: Vice-President - Marketing,
(Telecopier: 352- 3480-50) and Dewey Ballantine LLP, 1301 Avenue of the
Americas, New York, NY 10019, Attention: Joseph M. Juhas, Esq./Dev. R. Sen, Esq.
(Telecopier: 212-259-6333) (or at such other address as any such party may
specify from time to time in a written notice to the parties mentioned above).
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
the Escrow Agent 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 reflected in
the above-mentioned incumbency certificate, and may assume that the person so
signing has been properly authorized to do so. Except as provided in this
Agreement, the Depositary shall not be deemed to have any duty or notice
hereunder unless and until it has been provided with written notice.

             (c) 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.

<PAGE>
                                        8

             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.

             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 by the Escrow Agent, 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.t

             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>

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

                                            WELLS FARGO BANK NORTHWEST,
                                            NATIONAL ASSOCIATION,
                                            as Escrow Agent

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

                                            INTESABCI S.P.A., acting through its
                                            NEW YORK BRANCH,
                                            as Depositary

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

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

<PAGE>

                                                                      Schedule I

                              Schedule of Deposits
                              --------------------
                                    (Class B)

<TABLE>
<CAPTION>
                           Aircraft
 Deposit Date              Tail No.             Deposit Amount           Account No.
 ------------              --------             --------------           -----------
<S>                        <C>                  <C>                    <C>
March 28, 2002              N320TZ              $6,147,939.09           12060 081 004
March 28, 2002              N322TZ              $6,161,827.96           12060 081 006
March 28, 2002              N324TZ              $6,109,566.93           12060 081 008
March 28, 2002              N325TZ              $5,971,814.68          12060 081 0010
</TABLE>

<PAGE>

                                                                       EXHIBIT A

                          NOTICE OF PURCHASE WITHDRAWAL

IntesaBci S.p.A., New York Branch
One William Street
New York, NY 10004
Attention: Paul Florcruz
Telecopier: 212-422-6235

Gentlemen:

             Reference is made to the Deposit Agreement (Class B) dated as of
March 28, 2002 (as amended, modified or supplemented from time to time in
accordance with the terms thereof, the "Deposit Agreement") between Wells Fargo
Bank Northwest, National Association, as Escrow Agent, and IntesaBci S.p.A.,
acting through its New York Branch, as Depositary (the "Depositary").
Capitalized terms used but not defined herein shall have the meanings ascribed
to such terms in the Deposit Agreement.

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

             The undersigned hereby directs the Depositary to pay the proceeds
of the Deposit to [________________, Account No. _____, Reference: _________] on
_________ __, 2002, upon the telephonic request of a representative of
Wilmington Trust Company, the Pass Through Trustee.

                                                 WELLS FARGO BANK NORTHWEST,
                                                 NATIONAL ASSOCIATION,
                                                 as Escrow Agent

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

Dated: ___________, ____

<PAGE>

                                                                       EXHIBIT B

                           NOTICE OF FINAL WITHDRAWAL

IntesaBci S.p.A., New York Branch
One William Street
New York, NY 10004
Attention: Paul Florcruz
Telecopier: 212-422-6235

Gentlemen:

             Reference is made to the Deposit Agreement (Class B) dated as of
March 28, 2002 (as amended, modified or supplemented from time to time in
accordance with the terms thereof, the "Deposit Agreement") between Wells Fargo
Bank Northwest, National Association, as Escrow Agent, and IntesaBci S.p.A.,
acting through its New York Branch, as Depositary (the "Depositary").
Capitalized terms used but not defined herein shall have the meanings ascribed
to such terms in the Deposit Agreement.

             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, on
___________, 2002, the proceeds of the Deposits and accrued and unpaid interest
thereon to the Paying Agent at Wilmington Trust Company, ABA # _______________,
Account No. ___________, Reference: American Trans Air 2002-1B.

                                                     WELLS FARGO BANK NORTHWEST,
                                                     NATIONAL ASSOCIATION,
                                                     as Escrow Agent

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

Dated: _________, _____

<PAGE>

                                                                       EXHIBIT C

                        NOTICE OF REPLACEMENT WITHDRAWAL

IntesaBci S.p.A., New York Branch
One William Street
New York, NY 10004
Attention:  Paul Florcruz
Telecopier:  212-422-6235

Gentlemen:

             Reference is made to the Deposit Agreement (Class B) dated as of
March 28, 2002 (as amended, modified or supplemented from time to time in
accordance with the terms thereof, the "Deposit Agreement") between Wells Fargo
Bank Northwest, National Association, as Escrow Agent, and IntesaBci S.p.A.,
acting through its New York Branch, as Depositary (the "Depositary").
Capitalized terms used but not defined herein shall have the meanings ascribed
to such terms in the Deposit Agreement.

             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
[plus all accrued and unpaid interest on the Deposits to but excluding the date
of withdrawal] for payment on _______________, 2002.

             The undersigned hereby directs the Depositary to pay the proceeds
of the Deposits to [Name of Replacement Depositary] at
__________________________, ABA# _____________, Account No. _____________,
Reference: American Trans Air 2002-1B [and to pay accrued and unpaid interest
thereon to the Paying Agent at ___________, ABA #___________, Acct. No.
___________, Reference: American Trans Air 2002-1B].

                                                     WELLS FARGO BANK NORTHWEST,
                                                     NATIONAL ASSOCIATION,
                                                     as Escrow Agent

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

Dated: _________, _____

<PAGE>

                                                                       EXHIBIT D

                         NOTICE OF PREPAYMENT WITHDRAWAL

IntesaBci S.p.A., New York Branch
One William Street
New York, NY 10004
Attention:  Paul Florcruz
Telecopier:  212-422-6235

Gentlemen:

             Reference is made to the Deposit Agreement (Class B) dated as of
March 28, 2002 (as amended, modified or supplemented from time to time in
accordance with the terms thereof, the "Deposit Agreement") between Wells Fargo
Bank Northwest, National Association, as Escrow Agent, and IntesaBci S.p.A.,
acting through its New York Branch, as Depositary (the "Depositary").
Capitalized terms used but not defined herein shall have the meanings ascribed
to such terms in the Deposit Agreement.

             In accordance with Section 2.3(b)(iii) of the Deposit Agreement,
the undersigned hereby requests the withdrawal of the following amount of the
Deposit: $______________, Account No.:__________________ plus all accrued and
unpaid interest on such Deposits to but excluding the date of withdrawal for
payment on _______________, 2002.

             The undersigned hereby directs the Depositary to pay the proceeds
of the Deposits and accrued and unpaid interest thereon to the Paying Agent at
___________, ABA #___________, Acct. No. ___________, Reference: American Trans
Air 2002-1B.

                                                     WELLS FARGO BANK NORTHWEST,
                                                     NATIONAL ASSOCIATION,
                                                     as Escrow Agent

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

Dated: _________, _____<PAGE>

                                                                  EXECUTION COPY

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

                        ESCROW AND PAYING AGENT AGREEMENT
                                    (Class A)

                           Dated as of March 28, 2002

                                      among

                WELLS FARGO BANK NORTHWEST, NATIONAL ASSOCIATION,

                                 as Escrow Agent

                               NYALA FUNDING LLC,

                                  as Purchaser

                            WILMINGTON TRUST COMPANY,
                         not in its individual capacity,
                       but solely as Pass Through Trustee
                              for and on behalf of
                  American Trans Air 2002-1A Pass Through Trust

                             as Pass Through Trustee

                                       and

                            WILMINGTON TRUST COMPANY,

                                 as Paying Agent

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

<PAGE>

             ESCROW AND PAYING AGENT AGREEMENT (Class A) dated as of March 28,
2002 (as amended, modified or supplemented from time to time, this "Agreement")
among WELLS FARGO BANK NORTHWEST, NATIONAL ASSOCIATION, a national banking
association, as Escrow Agent (in such capacity, together with its successors in
such capacity, the "Escrow Agent"); NYALA FUNDING LLC (the "Purchaser", and
together with its transferees and assigns as registered owners of the
Certificates referred to below, the "Investors"); WILMINGTON TRUST COMPANY, a
Delaware banking corporation, not in its individual capacity but solely as
trustee (in such capacity, together with its successors in such capacity, the
"Pass Through Trustee") under the Pass Through Trust Agreement referred to
below; and WILMINGTON TRUST COMPANY, a Delaware banking corporation, as paying
agent hereunder (in such capacity, together with its successors in such
capacity, the "Paying Agent").

                               W I T N E S S E T H
                               - - - - - - - - - -

             WHEREAS, American Trans Air, Inc. ("ATA"), Amtran, Inc. ("Amtran")
and the Pass Through Trustee have entered into a Pass Through Trust Agreement,
dated as of the date hereof (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 2002-1A Pass Through Trust (the "Pass Through
Trust") pursuant to which the American Trans Air Pass Through Trust, Series
2002-1A Certificates (the "Certificates") are being issued;

             WHEREAS, ATA, the Pass Through Trustee and certain other persons
concurrently herewith are entering into the Note Purchase Agreement, dated as of
the date hereof (as amended, modified or supplemented from time to time in
accordance with the terms thereof, the "Note Purchase Agreement"), pursuant to
which the Pass Through Trustee 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 the
acquisition of Aircraft (as defined in the Note Purchase Agreement) by ATA, as
lessee or as owner, utilizing a portion of the proceeds from the sale of the
Certificates (the "Net Proceeds");

             WHEREAS, the Purchaser and the Pass Through Trustee intend that the
Net Proceeds be held in escrow by the Escrow Agent on behalf of the Investors,
subject to withdrawal upon request by the Pass Through Trustee and satisfaction
of the conditions set forth in the Note Purchase Agreement for the purpose of
purchasing Equipment Notes, and that pending such withdrawal (i) the Net
Proceeds from the sale of the Certificates on the date hereof be deposited on
behalf of the Escrow Agent with IntesaBci S.p.A., acting through its New York
Branch, as Depositary (the "Depositary", which shall also be deemed to refer to
any Replacement Depositary (as defined in the Note Purchase Agreement) from and
after the date on which the Deposits (as defined in the Deposit Agreement) are
transferred to such Replacement Depositary) under the Deposit Agreement (Class
A), dated as of the date hereof between the Depositary and the Escrow Agent
relating to the Pass Through Trust (as amended, modified or supplemented from
time to time in accordance with the terms thereof, the "Initial Deposit
Agreement") and (ii) the Net Proceeds from the sale of the Certificates on the
Delayed Funding Date (as defined in the

<PAGE>

                                       -2-

Delayed Funding Implementation Agreement) be deposited on behalf of the Escrow
Agent with the Depositary under the Delayed Deposit Agreement (Class A) dated as
of the date hereof between the Depositary and the Escrow Agent relating to the
Pass Through Trust (as amended, modified or supplemented from time to time in
accordance with the terms thereto), the "Delayed Deposit Agreement"). As used
herein, the term "Deposit Agreement" shall mean, prior to the Delayed Funding
Date, the Initial Deposit Agreement, and on and after the Delayed Funding Date,
the Initial Deposit Agreement (to the extent of any payment to be made by the
Depositary thereunder on or after the Delayed Funding Date) and the Delayed
Deposit Agreement. The terms "Initial Deposit Agreement" and "Delayed Deposit
Agreement" shall be deemed to refer to any Replacement Deposit Agreement (as
defined in the Note Purchase Agreement) to which the Escrow Agent becomes a
party pursuant to Section 1.02(a) hereof from and after the transfer of the
Deposits from the Depositary to the Replacement Depositary) pursuant to which,
among other things, the Depositary will pay interest for distribution to the
Investors and establish accounts from which the Escrow Agent shall make
withdrawals upon the request of and proper certification by the Pass Through
Trustee;

             WHEREAS, ATA, Amtran, the Pass Through Trustee, the Escrow Agent,
the Paying Agent and certain other parties concurrently herewith are entering
into a Delayed Funding Implementation Agreement dated as of the date hereof (as
amended, supplemented or otherwise modified from time to time, the "Delayed
Funding Implementation Agreement") pursuant to which the parties thereto agree
to supplement and modify the Operative Agreements, as defined therein;

             WHEREAS, the Escrow Agent wishes to appoint the Paying Agent to pay
amounts required to be distributed to the Investors in accordance with this
Agreement; and

             WHEREAS, capitalized terms used but not defined herein shall have
the meanings ascribed to such terms in the Pass Through Trust Agreement.

             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. Escrow Agent.

             Section 1.01. Appointment of Escrow Agent. The Purchaser hereby
irrevocably appoints, authorizes and directs the Escrow Agent to act as escrow
agent and fiduciary hereunder and under the Deposit Agreement for such specific
purposes and with such powers as are specifically delegated to the Escrow Agent
by the terms of this Agreement, together with such other powers as are
reasonably incidental thereto. Any and all monies received and held by the
Escrow Agent under this Agreement or the Deposit Agreement shall be held in
trust by the Escrow Agent in accordance with the terms of this Agreement. This
Agreement is irrevocable and the Investors' rights with respect to any monies
received and held in trust by the Escrow Agent under this Agreement or the
Deposit Agreement shall only be as provided under the terms and conditions of
this Agreement and the Deposit Agreement. The Escrow Agent (which term as used
in this sentence shall include reference to its affiliates and its own and its
affiliates' officers, directors, employees and agents): (a) shall have no duties
or responsibilities except those

<PAGE>

                                       -3-

expressly set forth in this Agreement and the Deposit Agreement; (b) shall not
be responsible to the Pass Through Trustee or the Investors for any recitals,
statements, representations or warranties of any person other then itself
contained in this Agreement or the Deposit Agreement or for the failure by the
Pass Through Trustee, the Investors, the Paying Agent or any other person or
entity (other than the Escrow Agent) to perform any of its obligations hereunder
(whether or not the Escrow Agent shall have any knowledge thereof); and (c)
shall not be responsible for any action taken or omitted to be taken by it
hereunder or provided for herein or in connection herewith, except for its own
willful misconduct or gross negligence (or simple negligence in connection with
the handling of funds).

             Section 1.02. Instruction; Etc. The Purchaser hereby irrevocably
directs the establishment of an escrow and accordingly instructs the Escrow
Agent, and the Escrow Agent agrees, (a) to enter into the Initial Deposit
Agreement and the Delayed Deposit Agreement and, if requested by ATA pursuant to
Section 4(a)(vii) of the Note Purchase Agreement, to enter into a Replacement
Deposit Agreement with the Replacement Depositary specified by the Company, (b)
to appoint the Paying Agent as provided for in this Agreement, (c) upon receipt
at any time and from time to time prior to the Termination Date (as defined
below) of a certificate substantially in the form of Exhibit B hereto (a
"Withdrawal Certificate") executed by the Pass Through Trustee, together with an
attached Notice of Purchase Withdrawal in substantially the form of Exhibit A to
the Deposit Agreement duly completed by the Pass Through Trustee (the
"Applicable Notice of Purchase Withdrawal" and the withdrawal to which it
relates, a "Purchase Withdrawal"), immediately to execute the Applicable Notice
of Purchase Withdrawal as Escrow Agent and transmit it to the Depositary by
facsimile transmission in accordance with the Deposit Agreement; provided that,
upon the request of the Pass Through Trustee after such transmission, the Escrow
Agent shall cancel such Applicable Notice of Purchase Withdrawal, (d) upon
receipt at any time and from time to time prior to the Delivery Period
Termination Date of a certificate substantially in the form of Exhibit C hereto
(a "Prepayment Withdrawal Certificate") executed by the Pass Through Trustee,
together with an attached Notice of Prepayment Withdrawal in substantially the
form of Exhibit D to the Deposit Agreement duly completed by the Pass Through
Trustee (the "Applicable Notice of Prepayment Withdrawal" and the withdrawal to
which it relates, a "Prepayment Withdrawal"), immediately to execute the
Applicable Notice of Prepayment Withdrawal as Escrow Agent and transmit it to
the Depositary by facsimile transmission in accordance with the Deposit
Agreement; provided that, upon the request of the Pass Through Trustee after
such transmission, the Escrow Agent shall cancel such Applicable Notice of
Prepayment Withdrawal, and (e) upon receipt of a Withdrawal Certificate executed
by the Pass Through Trustee, together with an attached Notice of Replacement
Withdrawal in substantially the form of Exhibit C to the Deposit Agreement duly
completed by the Pass Through Trustee, to (i) give such Notice of Replacement
Withdrawal to the Depositary requesting a withdrawal, on the date specified in
such notice, which shall not be less than 15 days after such notice is given
(the "Replacement Withdrawal Date"), of all Deposits then held by the Depositary
together with, if the Replacement Withdrawal Date occurs on a Regular
Distribution Date, all accrued and unpaid interest on such Deposits to but
excluding the Replacement Withdrawal Date, and (ii) direct the Depositary to
transfer such Deposits on behalf of the Escrow Agent to the Replacement
Depositary in accordance with the Replacement Deposit Agreement and (f) if there
are any undrawn Deposits on the "Termination Date", which shall mean the earlier
of (i) September 29, 2002 and (ii) the day on which the Escrow Agent receives

<PAGE>

                                       -4-

notice from the Pass Through Trustee that the Pass Through Trustee's obligation
to purchase Equipment Notes under the Note Purchase Agreement has terminated, to
give notice to the Depositary (with a copy to the Paying Agent) substantially in
the form of Exhibit B to the Deposit Agreement requesting a withdrawal of all of
the remaining Deposits, together with accrued and unpaid interest on such
Deposits to the date of withdrawal, on the 15th day after the date that such
notice of withdrawal is given to the Depositary (or, if not a Business Day, on
the next succeeding Business Day) (a "Final Withdrawal"), provided that if the
day scheduled for the Final Withdrawal in accordance with the foregoing is
within 10 days before or after a Regular Distribution Date, then the Escrow
Agent shall request that such requested Final Withdrawal be made on such Regular
Distribution Date (the date of such requested withdrawal, the "Final Withdrawal
Date"). If for any reason the Escrow Agent shall have failed to give the Final
Withdrawal Notice to the Depositary on or before September 29, 2002, and there
are unwithdrawn Deposits on such date, the Final Withdrawal Date shall be deemed
to be October 14, 2002.

             Section 1.03. Initial Escrow Amount; Issuance of Escrow Receipts.
The Escrow Agent hereby directs the Purchaser to, and the Purchaser hereby
acknowledges that on the date hereof it shall, irrevocably deliver by wire
transfer to the Depositary on behalf of the Escrow Agent an amount in U.S.
dollars ("Dollars") and immediately available funds equal to $89,886,351.34 for
deposit on behalf of the Escrow Agent with the Depositary in accordance with
Section 2.1 of the Deposit Agreement. The Purchaser hereby instructs the Escrow
Agent, upon receipt of such sum from the Purchaser, to confirm such receipt by
executing and delivering to the Pass Through Trustee an Escrow Receipt in the
form of Exhibit A hereto (an "Escrow Receipt"), (a) to be affixed by the Pass
Through Trustee to each Certificate and (b) to evidence the same percentage
interest (the "Escrow Interest") in the Account Amounts (as defined in Section
1.04) as the Fractional Undivided Interest in the Pass Through Trust evidenced
by the Certificate to which it is to be affixed. The Escrow Agent shall provide
to the Pass Through Trustee for attachment to each Certificate newly issued
under and in accordance with the Pass Through Trust Agreement an executed Escrow
Receipt as the Pass Through Trustee may from time to time request of the Escrow
Agent. Each Escrow Receipt shall be registered by the Escrow Agent in a register
(the "Register") maintained by the Escrow Agent in the same name and same manner
as the Certificate to which it is attached and may not thereafter be detached
from such Certificate to which it is to be affixed prior to the distribution of
the Final Withdrawal (the "Final Distribution"). After the Final Distribution,
no Escrow Receipts shall be issued and the Pass Through Trustee shall request
the return to the Escrow Agent for cancellation of all outstanding Escrow
Receipts.

             Section 1.04. Payments to Receiptholders. All payments and
distributions made to holders of an Escrow Receipt (collectively
"Receiptholders") in respect of the Escrow Receipt shall be made only from
amounts deposited in the Paying Agent Account ("Account Amounts"). Each
Receiptholder, by its acceptance of an Escrow Receipt, agrees that (a) it will
look solely to the Account Amounts for any payment or distribution due to such
Receiptholder pursuant to the terms of the Escrow Receipt and this Agreement and
(b) it will have no recourse to ATA, the Pass Through Trustee, the Paying Agent
or the Escrow Agent for any such payment or distribution, except as expressly
provided herein or in the Pass Through Trust Agreement. No Receiptholder shall
have any right to vote or in any manner otherwise control the operation and

<PAGE>

                                       -5-

management of the Paying Agent Account or the obligations of the parties hereto,
nor shall anything set forth herein, or contained in the terms of the Escrow
Receipt, be construed so as to constitute the Receiptholders from time to time
as partners or members of an association.

             Section 1.05. Mutilated, Destroyed Lost or Stolen Escrow Receipt.
If (a) any mutilated Escrow Receipt is surrendered to the Escrow Agent or the
Escrow Agent receives evidence to its satisfaction of the destruction, loss or
theft of any Escrow Receipt and (b) there is delivered to the Escrow Agent and
the Pass Through Trustee such security, indemnity or bond, as may be required by
them to hold each of them harmless, then, absent notice to the Escrow Agent or
the Pass Through Trustee that such destroyed, lost or stolen Escrow Receipt has
been acquired by a protected purchaser, and provided that the requirements of
Section 8-405 of the Uniform Commercial Code in effect in any applicable
jurisdiction are met, the Escrow Agent shall execute, authenticate and deliver,
in exchange for or in lieu of any such mutilated, destroyed, lost or stolen
Escrow Receipt, a new Escrow Receipt or Escrow Receipts and of like Escrow
Interest in the Account Amounts and bearing a number not contemporaneously
outstanding.

             In connection with the issuance of any new Escrow Receipt under
this Section 1.05, the Escrow Agent may require the payment of a sum sufficient
to cover any tax or other governmental charge that may be imposed in relation
thereto and any other expenses (including the fees and expenses of the Pass
Through Trustee and the Escrow Agent) connected therewith.

             Any duplicate Escrow Receipt issued pursuant to this Section 1.05
shall constitute conclusive evidence of the appropriate Escrow Interest in the
Account Amounts, as if originally issued, whether or not the lost, stolen or
destroyed Escrow Receipt shall be found at any time.

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

             Section 1.06. Additional Escrow Amounts. On the date of any
Purchase Withdrawal, the Pass Through Trustee may re-deposit with the Depositary
some or all of the amounts so withdrawn in accordance with Section 2.4 of the
Deposit Agreement.

              Section 1.07. Resignation or Removal of Escrow Agent. Subject to
the appointment and acceptance of a successor Escrow Agent as provided below,
the Escrow Agent may resign at any time by giving 30 days' prior written notice
thereof to the Investors, but may not otherwise be removed except for cause by
the written consent of the Investors with respect to Investors representing
Escrow Interests aggregating not less than a majority in interest in the Account
Amounts (an "Action of Investors"). Upon any such resignation or removal, the
Investors, by an Action of Investors, shall have the right to appoint a
successor Escrow Agent. If no successor Escrow Agent shall have been so
appointed and shall have accepted such appointment within 30 days after the
retiring Escrow Agent's giving of notice of resignation or the removal of the
retiring Escrow Agent, then the retiring Escrow Agent may appoint a successor
Escrow Agent, which shall be a commercial bank which has an office in the United
States with a combined capital and surplus of at least $100,000,000. Upon the
acceptance of any appointment as Escrow Agent hereunder by a successor Escrow
Agent, such successor Escrow

<PAGE>

                                       -6-

Agent shall enter into such documents as the Pass Through Trustee shall require
and shall thereupon succeed to and become vested with all the rights, powers,
privileges and duties of the retiring Escrow Agent, and the retiring Escrow
Agent shall be discharged from its duties and obligations hereunder. No
resignation or removal of the Escrow Agent shall be effective unless a written
confirmation shall have been obtained from Moody's Investors Service, Inc. that
the replacement of the Escrow Agent with the successor Escrow Agent will not
result in (a) a reduction of the rating for the Certificates below the then
current rating for the Certificates or (b) a withdrawal or suspension of the
rating of the Certificates.

             Section 1.08. Persons Deemed Owners. Prior to due presentment of a
Certificate for registration of transfer, the Escrow Agent and the Paying Agent
may treat the Person in whose name any Escrow Receipt is registered (as of the
day of determination) as the owner of such Escrow Receipt for the purpose of
receiving distributions pursuant to this Agreement and for all other purposes
whatsoever, and none of the Escrow Agent or the Paying Agent shall be affected
by any notice to the contrary.

             Section 1.09. Further Assurances. The Escrow Agent agrees to take
such actions, and execute such other documents, as may be reasonably requested
by the Pass Through Trustee in order to effectuate the purposes of this
Agreement and the performance by the Escrow Agent of its obligations hereunder.

             SECTION 2. Paying Agent.

             Section 2.01. Appointment of Paying Agent. The Escrow Agent hereby
irrevocably appoints and authorizes the Paying Agent to act as its paying agent
hereunder, for the benefit of the Investors, for such specific purposes and with
such powers as are specifically delegated to the Paying Agent by the terms of
this Agreement, together with such other powers as are reasonably incidental
thereto. The Paying Agent is authorized to enter into the Delayed Funding
Implementation Agreement. Any and all money received and held by the Paying
Agent under this Agreement or the Deposit Agreement shall be held in the Paying
Agent Account (as defined below) for the benefit of the Investors. The Paying
Agent (which term as used in this sentence shall include reference to its
affiliates and its own and its affiliates' officers, directors, employees and
agents): (a) shall have no duties or responsibilities hereunder except those
expressly set forth in this Agreement, and shall not by reason of this Agreement
be a trustee for the Escrow Agent; (b) shall not be responsible to the Escrow
Agent for any recitals, statements, representations or warranties of any person
other than itself contained in this Agreement or for the failure by the Escrow
Agent or any other person or entity (other than the Paying Agent) to perform any
of its obligations hereunder (whether or not the Paying Agent shall have any
knowledge thereof); and (c) except in respect of its express obligations
hereunder, shall not be responsible for any action taken or omitted to be taken
by it hereunder or provided for herein or in connection herewith, except for its
own willful misconduct or gross negligence (or simple negligence in connection
with the handling of funds).

             Section 2.02. Establishment of Paving Agent Account. The Paying
Agent shall establish a deposit account (the "Paying Agent Account") at
Wilmington Trust Company in the name of the Escrow Agent. It is expressly
understood by the parties hereto that the Paying Agent

<PAGE>

                                       -7-

is acting as the paying agent of the Escrow Agent hereunder and that no amounts
on deposit in the Paying Agent Account constitute part of the Trust Property.

             Section 2.03. Payments from Paying Agent Account. The Escrow Agent
hereby irrevocably instructs the Paying Agent, and the Paying Agent agrees to
act, as follows:

             (a) On each Interest Payment Date (as defined in the Deposit
Agreement) or as soon thereafter as the Paying Agent has confirmed receipt in
the Paying Agent Account from the Depositary of any amount in respect of accrued
interest on the Deposits, the Paying Agent shall distribute out of the Paying
Agent Account the entire amount deposited therein by the Depositary. There shall
be so distributed to each Receiptholder of record on the 15th day (whether or
not a Business Day) preceding such Interest Payment Date by check mailed to such
Receiptholder, at the address appearing in the Register, such Receiptholder's
pro rata share (based on the Escrow Interest in the Account Amounts held by such
Receiptholder) of the total amount of interest deposited by the Depositary in
the Paying Agent Account on such date, except that, with respect to Escrow
Receipts registered on the Record Date in the name of The Depository Trust
Company ("DTC") or the Purchaser, such distribution shall be made by wire
transfer in immediately available funds to the account designated by DTC or the
Purchaser, as the case may be.

             (b) Upon the confirmation by the Paying Agent of receipt in the
Paying Agent Account from the Depositary of any amount in respect of the Final
Withdrawal, the Paying Agent shall forthwith distribute the entire amount of the
Final Withdrawal deposited therein by the Depositary to each Receiptholder of
record on the 15th day (whether or not a Business Day) preceding the Final
Withdrawal Date by check mailed to such Receiptholder, at the address appearing
in the Register, such Receiptholder's pro rata share (based on the Escrow
Interest in the Account Amounts held by such Receiptholder) of the total amount
in the Paying Agent Account on account of such Final Withdrawal, except that,
with respect to Escrow Receipts registered on such record date in the name of
DTC or the Purchaser, such distribution shall be made by wire transfer in
immediately available funds to the account designated by DTC or the Purchaser,
as the case may be.

             (c) If any payment of interest or principal in respect of the Final
Withdrawal is not received by the Paying Agent within five days of the
applicable date when due, then it shall be distributed to Receiptholders after
actual receipt by the Paying Agent on the same basis as a Special Payment is
distributed under the Pass Through Trust Agreement.

             (d) Upon the confirmation by the Paying Agent of receipt in the
Paying Agent Account from the Depositary of any amount in respect of a
Prepayment Withdrawal, the Paying Agent shall forthwith distribute the entire
amount of such Prepayment Withdrawal upon not less than 15 days prior notice to
the Receipt holders. There shall be distributed to each Receiptholder of record
on the 15th day (whether or not a Business Day) preceding such date of
distribution by check mailed to such Receiptholder, at the address appearing in
the Register, such Receiptholder's pro rata share (based on the Escrow Interest
in the Account Amounts held by such Receiptholder) of the total amount in the
Paying Agent Account on account of such Prepayment Withdrawal, except that, with
respect to the Escrow Receipts registered on such

<PAGE>

                                       -8-

record date in the name of a nominee of DTC, such distribution shall be made by
wire transfer in immediately available funds to the account designated by DTC.

             (e) The Paying Agent shall include with any check mailed pursuant
to this Section or any payment to the Purchaser, any notice required to be
distributed under the Pass Through Trust Agreement that is furnished to the
Paying Agent by the Pass Through Trustee.

             Section 2.04. Withholding Taxes. The Paying Agent shall exclude and
withhold from each distribution of accrued interest on the Deposits (as defined
in the Deposit Agreement) and any amount in respect of any Prepayment Withdrawal
or the Final Withdrawal any and all withholding taxes applicable thereto as
required by federal law of the United States. The Paying Agent agrees to act as
such withholding agent and, in connection therewith, whenever any present or
future taxes or similar charges are required to be withheld with respect to any
amounts payable in respect of the Deposits (as defined in the Deposit Agreement)
or the escrow amounts, to withhold such amounts and timely pay the same to the
appropriate authority in the name of and on behalf of the Receiptholders, that
it will file any necessary withholding tax returns or statements when due, and
that, as promptly as possible after the payment thereof, it will deliver to each
such Receiptholder appropriate documentation showing the payment thereof,
together with such additional documentary evidence as such Receiptholder may
reasonably request from time to time. The Paying Agent agrees to file any other
information reports as it may be required to file under United States law. Each
Receiptholder or beneficial owner of an interest in an Escrow Receipt that is a
Non-U.S. Person, by its acceptance of an Escrow Receipt or a beneficial interest
therein, agrees to indemnify and hold harmless the Escrow Agent and the Paying
Agent from and against any improper failure to withhold Taxes from amounts
payable to it or for its benefit other than an improper failure attributable to
the gross negligence or willful misconduct of the Escrow Agent or the Paying
Agent, as the case may be. The Paying Agent agrees, to the extent required by
the Internal Revenue Code of 1986, as amended (the "Code"), and applicable
federal regulations thereunder, to withhold from each payment due hereunder or
under any Escrow Receipts, United States withholding taxes at the appropriate
rate, and, on a timely basis, to deposit such amounts with the appropriate
taxing authority and make such returns, filings and other reports in connection
therewith as are required by the Code and as promptly as possible after the
payment thereof to deliver to each such Receiptholder appropriate documentation
showing the payment thereof, together with such additional documentary evidence
as such Receiptholder may reasonably request from time to time. In the event
that any withholding tax is imposed on a payment to a Receiptholder, such tax
shall reduce the amount otherwise distributable to the Receiptholder in
accordance with this Section. Any Receiptholder which is organized under the
laws of a jurisdiction outside the United States shall, on or prior to the date
such Receiptholder becomes a Receiptholder, (a) so notify the Paying Agent, (b)
(i) provide the Paying Agent with Internal Revenue Service Form W-8BEN or
W-8ECI, as appropriate (or any successor form), or (ii) notify the Paying Agent
that it is not entitled to an exemption from United States withholding tax or a
reduction in the rate thereof on payments of interest. Any such Receiptholder
agrees by its acceptance of an Escrow Receipt, on an ongoing basis, to provide
like certification for each taxable year and to notify the Paying Agent should
subsequent circumstances arise affecting the information provided the Paying
Agent in clauses (a) and (b) above. The Paying Agent shall be fully protected in
relying upon, and each Receiptholder by its acceptance of an Escrow Receipt
agrees to indemnify and hold the Paying Agent harmless

<PAGE>

                                      -9-

against all claims or liability of any kind arising in connection with or
related to the Paying Agent's reliance upon any documents, forms or information
provided by any Receiptholder to the Paying Agent. In addition, if the Paying
Agent has not withheld taxes on any payment made to any Receiptholder, and the
Paying Agent is subsequently required to remit to any taxing authority any such
amount not withheld, such Receiptholder shall return such amount to the Paying
Agent upon written demand by the Paying Agent. The Paying Agent shall be liable
only for direct (but not consequential) damages to any Receiptholder due to the
Paying Agent's violation of the Code and only to the extent such liability is
caused by the Paying Agent's gross negligence or willful misconduct.

             Section 2.05. Resignation or Removal of Paying Agent. Subject to
the appointment and acceptance of a successor Paying Agent as provided below,
the Paying Agent may resign at any time by giving 30 days' prior written notice
thereof to the Escrow Agent, but may not otherwise be removed except for cause
by the Escrow Agent. Upon any such resignation or removal, the Escrow Agent
shall have the right to appoint a successor Paying Agent, which shall be a
commercial bank which has an office in the United States with a combined capital
and surplus of at least $100,000,000. If no successor Paying Agent shall have
been so appointed and shall have accepted such appointment within 30 days after
the retiring Paying Agent's giving of notice of resignation or the removal of
the retiring Paying Agent, then the retiring Paying Agent may (i) appoint a
successor Paying Agent, which shall be a commercial bank which has an office in
the United States with a combined capital and surplus of at least $100,000,000
or (ii) petition a court of competent jurisdiction to appoint such a successor.
Upon the acceptance of any appointment as Paying Agent hereunder by a successor
Paying Agent, such successor Paying Agent shall enter into such documents as the
Escrow Agent shall require and shall thereupon succeed to and become vested with
all the rights, powers, privileges and duties of the retiring Paying Agent, and
the retiring Paying Agent shall be discharged from its duties and obligations
hereunder.

             Section 2.06. Notice of Prepayment Withdrawal and Final Withdrawal.
Promptly after receipt by the Paying Agent of notice that the Escrow Agent has
requested a Prepayment Withdrawal or a Final Withdrawal or that a Prepayment
Withdrawal or a Final Withdrawal will be made, the Paying Agent shall cause
notice of the distribution of the Final Withdrawal to be mailed to each of the
Receiptholders at its address as it appears in the Register. Such notice shall
be mailed not less than 15 days prior to the distribution date of such
Prepayment Withdrawal (the "Prepayment Withdrawal Date") or the Final Withdrawal
Date. Such notice shall set forth:

             (i) the Prepayment Withdrawal Date or the Final Withdrawal Date and
       the date for determining Receiptholders of record who shall be entitled
       to receive distributions in respect of the Prepayment Withdrawal or the
       Final Withdrawal,

             (ii) the amount of the payment in respect of the Prepayment
       Withdrawal or Final Withdrawal for each $1,000 face amount Certificate
       (based on information provided by the Pass Through Trustee) and the
       amount thereof constituting unused Deposits (as defined in the Deposit
       Agreement) and interest thereon, and

             (iii) if the Prepayment Withdrawal Date or the Final Withdrawal
       Date is the same date as a Regular Distribution Date, the total amount to
       be received on such date for

<PAGE>

                                      -10-

       each $1,000 face amount Certificate (based on information provided by the
       Pass Through Trustee).

             Such mailing may include any notice required to be given to
Certificateholders in connection with such distribution pursuant to the Pass
Through Trust Agreement.

             SECTION 3. Payments. If, notwithstanding the instructions in
Section 4 of the Deposit Agreement that certain amounts payable to the Escrow
Agent under the Deposit Agreement be paid by the Depositary directly to the
Paying Agent or the Pass Through Trustee (depending on the circumstances), the
Escrow Agent receives any such payment thereunder, then the Escrow Agent shall
forthwith pay such amount in Dollars and in immediately available funds by wire
transfer to (a) in the case of a payment of accrued interest on the Deposits (as
defined in the Deposit Agreement), any Prepayment Withdrawal or any Final
Withdrawal, directly to the Paying Agent Account, (b) in the case of any
Purchase Withdrawal, directly to the Pass Through Trustee or its designee as
specified and in the manner provided in the Applicable Notice of Purchase
Withdrawal and (c) in the case of any Replacement Withdrawal (other than accrued
interest), to the Replacement Depositary as provided in the Replacement
Depositary Agreement. The Escrow Agent 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 have
against amounts payable to the Paying Agent howsoever arising.

             SECTION 4. Other Actions. The Escrow Agent shall take such other
actions under or in respect of the Deposit Agreement (including, without
limitation, the enforcement of the obligations of the Depositary thereunder) as
the Investors, by an Action of Investors, may from time to time request.

             SECTION 5. Representations and Warranties of the Escrow Agent. The
Escrow Agent represents and warrants to ATA, the Investors, the Paying Agent and
the Pass Through Trustee as follows:

             (i)   it is a national banking association duly organized and
                   validly existing in good standing under the laws of the
                   United States of America;

             (ii)  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, the
                   Deposit Agreement and any Replacement Deposit Agreement;

             (iii) the execution, delivery and performance of each of this
                   Agreement, the Deposit Agreement and any Replacement Deposit
                   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 each
                   such document 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 or
                   thereof except as such enforceability may be limited by
                   bankruptcy, insolvency, moratorium, reorganization or other
                   similar laws

<PAGE>

                                      -11-

                   or equitable principles of general application to or
                   affecting the enforcement of creditors' rights generally
                   (regardless of whether such enforceability is considered in
                   a proceeding in equity or at law);

             (iv)  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 or the Deposit Agreement or any Replacement Deposit
                   Agreement;

             (v)   neither the execution, delivery or performance by it of this
                   Agreement or the Deposit Agreement or any Replacement Deposit
                   Agreement, nor compliance with the terms and provisions
                   hereof or thereof, conflicts or will conflict with or results
                   or will result in a breach or violation of any of the terms,
                   conditions or provisions of, or will require any consent or
                   approval under, any law, governmental rule or regulation or
                   the charter documents, as amended, or bylaws, as amended, of
                   it or any similar instrument binding on it or any order,
                   writ, injunction or decree of any court or governmental
                   authority against it or by which it or any of its properties
                   is bound or any indenture, mortgage or contract or other
                   agreement or instrument to which it is a party or by which it
                   or any of its properties is bound, or constitutes or will
                   constitute a default thereunder or results or will result in
                   the imposition of any lien upon any of its properties; and

             (vi)  there are no pending or, to its knowledge, threatened
                   actions, suits, investigations or proceedings (whether or not
                   purportedly on behalf of it) against or affecting it or any
                   of its property before or by any court or administrative
                   agency which, if adversely determined, (A) would adversely
                   affect the ability of it to perform its obligations under
                   this Agreement or the Deposit Agreement or any Replacement
                   Deposit Agreement or (B) would call into question or
                   challenge the validity of this Agreement or the Deposit
                   Agreement or the enforceability hereof or thereof in
                   accordance with the terms hereof or thereof, nor is the
                   Escrow Agent in default with respect to any order of any
                   court, governmental authority, arbitration board or
                   administrative agency so as to adversely affect its ability
                   to perform its obligations under this Agreement or the
                   Deposit Agreement.

             SECTION 6. Representations and Warranties of the Paying Agent. The
Paying Agent represents and warrants to ATA, the Investors, the Escrow Agent and
the Pass Through Trustee as follows:

             (i)   it is a Delaware banking corporation duly organized and
                   validly existing in good standing under the laws of the State
                   of Delaware;

<PAGE>

                                      -12-

             (ii)  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;

             (iii) the execution, delivery and performance of this Agreement has
                   been duly authorized by all necessary corporate action on the
                   part of it and does not require any stockholder approval, or
                   approval or consent of any trustee or holder of any
                   indebtedness or obligations of it, and such document 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 except as such
                   enforceability may be limited by bankruptcy, insolvency,
                   moratorium, reorganization or other similar laws or equitable
                   principles of general application to or affecting the
                   enforcement of creditors' rights generally (regardless of
                   whether such enforceability is considered in a proceeding in
                   equity or at law);

             (iv)  no authorization, consent or approval of or other action by,
                   and no notice to or filing with, any Delaware state
                   governmental or United States federal authority or regulatory
                   body governing its banking or trust powers is required for
                   the execution, delivery or performance by it of this
                   Agreement;

             (v)   neither the execution, delivery or performance by it of this
                   Agreement, nor compliance with the terms and provisions
                   hereof, conflicts or will conflict with or results or will
                   result in a breach or violation of any of the terms,
                   conditions or provisions of, or will require any consent or
                   approval under, any law, governmental rule or regulation or
                   the charter documents, as amended, or bylaws, as amended, of
                   it or any similar instrument binding on it or any order,
                   writ, injunction or decree of any court or governmental
                   authority against it or by which it or any of its properties
                   is bound or any indenture, mortgage or contract or other
                   agreement or instrument to which it is a party or by which it
                   or any of its properties is bound, or constitutes or will
                   constitute a default thereunder or results or will result in
                   the imposition of any lien upon any of its properties; and

             (vi)  there are no pending or, to its knowledge, threatened
                   actions, suits, investigations or proceedings (whether or not
                   purportedly on behalf of it) against or affecting it or any
                   of its property before or by any court or administrative
                   agency which, if adversely determined, (A) would adversely
                   affect the ability of it to perform its obligations under
                   this Agreement or (B) would call into question or challenge
                   the validity of this Agreement or the enforceability hereof
                   in accordance with the terms hereof, nor is the Paying Agent
                   in default with respect to any order of any court,
                   governmental authority, arbitration board or administrative
                   agency so as to adversely affect its ability to perform its
                   obligations under this Agreement.

<PAGE>

                                      -13-

             SECTION 7. Indemnification. Except for actions expressly authorized
or required of the Escrow Agent or the Paying Agent hereunder, each of the
Escrow Agent and the Paying Agent shall in all cases be fully justified in
failing or refusing to act hereunder unless it shall have been indemnified by
the party requesting such action in a manner reasonably satisfactory to it
against any and all liability and expense which may be incurred by it by reason
of taking or continuing to take any such action. In the event ATA requests any
amendment to any Operative Agreement (as defined in Annex A to the Note Purchase
Agreement), the Pass Through Trustee agrees to pay all reasonable fees and
expenses (including, without limitation, reasonable fees and disbursements of
counsel) of the Escrow Agent and the Paying Agent in connection therewith.

             SECTION 8. Amendment, Etc. Upon request of the Pass Through Trustee
and approval by an Action of Investors, the Escrow Agent and the Paying Agent
shall enter into an amendment to this Agreement, so long as such amendment does
not adversely affect the rights or obligations of the Escrow Agent or the Paying
Agent or the rights of the Investors, provided that upon request of the Pass
Through Trustee and without any consent of the Investors, the Escrow Agent shall
enter into an amendment to this Agreement for any of the following purposes:

             (1) to correct or supplement any provision in this Agreement which
       may be defective or inconsistent with any other provision herein or to
       cure any ambiguity or correct any mistake or to modify any other
       provision with respect to matters or questions arising under this
       Agreement, provided that any such action shall not materially adversely
       affect the interests of the Investors; or

             (2) to comply with applicable law, any requirement of the SEC, any
       federal or state banking rule or regulation or the rules or regulations
       of any applicable regulatory body; or

             (3) to evidence and provide for the acceptance of appointment under
       this Agreement of a successor Escrow Agent, successor Paying Agent or
       successor Pass Through Trustee.

             Notwithstanding any provision of this Agreement, upon and
simultaneously with the issuance of the Additional Certificates (as defined in
the Delayed Funding Implementation Agreement), this Agreement shall be forthwith
amended as provided in the Delayed Funding Implementation Agreement, without any
need for further action on the part of any party hereto and without any consent
of any of the Receiptholders.

             SECTION 9. Notices. Unless otherwise expressly provided herein, any
notice 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 (a) in the case of the Investors,
as their respective addresses shall appear in the Register, (b) in the case of
the Escrow Agent, Wells Fargo Bank Northwest, National Association, 79 South
Main Street, 3rd Floor, Salt Lake City, UT 84111, Attention: Corporate Trust
Services (Telecopier: (801) 246-5053), (c) in the case of the Pass Through
Trustee, Wilmington Trust Company, Rodney Square North, 1100 North Market
Street, Wilmington, DE 19890, Attention: Corporate Trust Administration
(Telecopier: (302) 636-4140) or (d) in the case of the Paying Agent, Wilmington

<PAGE>

                                      -14-

Trust Company, Rodney Square North, 1100 North Market Street, Wilmington, DE
19890, Attention: Corporate Trust Administration (Telecopier: (302) 636-4140),
in each case with a copy to American Trans Air, Inc., 7337 West Washington
Street, Indianapolis, Indiana 46231, 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 other
parties). On or prior to the execution of this Agreement, the Pass Through
Trustee has delivered to the Escrow Agent a certificate containing specimen
signatures of the representatives of the Pass Through Trustee who are authorized
to give notices and instructions with respect to this Agreement. The Escrow
Agent may conclusively rely on such certificate until the Escrow Agent receives
written notice from the Pass Through Trustee to the contrary.

             SECTION 10. Transfer. No 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 Section 1.07 hereof
or (in the case of the Paying Agent) to a successor paying agent under Section
2.05 hereof, 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 and the Paying Agent) their
respective permitted assigns.

             SECTION 11. Non-Petition. Each of the Escrow Agent, the Pass
Through Trustee and the Paying Agent hereby agrees that it will not institute
against, or join any other person in instituting against, the Purchaser any
bankruptcy, reorganization, arrangement, insolvency or liquidation proceeding,
or other proceeding under any Federal or state bankruptcy or similar law, for
one year and a day after the latest maturing note issued by the Purchaser is
paid in full. The provisions of this Section 11 shall survive the termination of
this Agreement.

             SECTION 12. Limited Recourse. Notwithstanding anything to the
contrary contained in this Agreement, the obligations of the Purchaser under
this Agreement are solely the corporate obligations of the Purchaser and shall
be payable by the Purchaser solely as provided in this Section 12. Each of the
Escrow Agent, the Pass Through Trustee and the Paying Agent agrees that the
Purchaser shall only be required to pay (a) any fees or liabilities that it may
incur hereunder only to the extent the Purchaser has Excess Funds (as defined
below) and (b) any expenses, indemnities or other liabilities that it may incur
hereunder only to the extent the Purchaser has Excess Funds. In addition, no
amount owing by the Purchaser hereunder in excess of the liabilities that the
Purchaser is required to pay in accordance with the preceding sentence shall
constitute a claim (as defined in Section 101 to Title 11 of the United States
Code) against the Purchaser. No recourse shall be had for the payment of any
amount owing hereunder or for the payment of any fee hereunder or any other
obligation of, or claim against, the Purchaser arising out of or based upon this
Agreement, against any stockholder, employee, officer, director, incorporator or
manager of the Purchaser or affiliate thereof except as otherwise provided in
this Section 12; provided, however, that the foregoing shall not relieve any
such person or entity of any liability they might otherwise have as a result of
fraudulent actions or omissions taken by them. Any and all claims against the
Purchaser shall be subordinate to the claims of the holders of the notes issued
by the Purchaser. The obligations of the Escrow Agent, the Pass Through Trustee
and the Paying Agent under this Section 12 shall survive the termination of this
Agreement. For purposes of this Section 12, "Excess Funds" shall mean, as of any
date of

<PAGE>

                                      -15-

determination, all funds not required, after giving effect to all
amounts on deposit in the commercial paper account of the Purchaser and the
issuer account of the Purchaser or expected to be on deposit in the commercial
paper account of the Purchaser, to pay or provide for the payment of any
outstanding notes issued by the Purchaser when due.

             SECTION 13. Entire Agreement. This Agreement sets forth all of the
promises, covenants, agreements, conditions and understandings among the Escrow
Agent, the Paying Agent, the Investors and the Pass Through Trustee 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 14. Survival. This Agreement shall remain in full force and
effect through March 17, 2003.

             SECTION 15. Governing Law. This Agreement shall be governed by, and
construed in accordance with, the laws of the State of New York.

             SECTION 16. Waiver of Jury Trial Right. EACH OF THE ESCROW AGENT,
THE PAYING AGENT, THE INVESTORS AND THE PASS THROUGH TRUSTEE 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 17. Counterparts. This Agreement may be executed in one or
more counterparts, all of which taken together shall constitute one instrument.

             SECTION 18. Notwithstanding anything contained herein to the
contrary, it is expressly understood and agreed by the parties hereto that (a)
this Agreement is executed and delivered by Wilmington Trust Company in
connection with its role as Pass Through Trustee, not individually or personally
but solely as Pass Through Trustee in the exercise of the powers and authority
conferred and vested in it under the Pass Through Trust Agreement, (b) each of
the representations, undertakings and agreements herein made on the part of the
Pass Through Trustee is made and intended not as personal representations,
undertakings and agreements by Wilmington Trust Company but is made and intended
for the purpose for binding only the Pass Through Trustee and (c) under no
circumstances shall Wilmington Trust Company be personally liable for the
payment of any indebtedness or expenses of the Pass Through Trustee or be liable
for the breach or failure of any obligation, representation, warranty or
covenant made or undertaken by the Pass Through Trustee under this Agreement or
the other related documents.

<PAGE>

             IN WITNESS WHEREOF, the Escrow Agent, the Paying Agent, the
Purchaser and the Pass Through Trustee have caused this Escrow and Paying Agent
Agreement (Class A) to be duly executed as of the day and year first above
written.

                                            WELLS FARGO BANK NORTHWEST,
                                            NATIONAL ASSOCIATION,
                                            as Escrow Agent

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

                                            NYALA FUNDING LLC,
                                            as Purchaser

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

                                            WILMINGTON TRUST COMPANY, not in its
                                            individual capacity, but solely as
                                            Pass Through Trustee for and on
                                            behalf of American Trans Air 2002-1A
                                            Pass Through Trust

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

                                            WILMINGTON TRUST COMPANY,
                                            as Paying Agent

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

<PAGE>

                                    EXHIBIT A

                    AMERICAN TRANS AIR 2002-1A ESCROW RECEIPT

                                     No. __

             This Escrow Receipt evidences a fractional undivided interest in
amounts ("Account Amounts") from time to time deposited into a certain paying
agent account (the "Paying Agent Account") described in the Escrow and Paying
Agent Agreement (Class A) dated as of March 28, 2002 (as amended, modified or
supplemented from time to time, the "Escrow and Paying Agent Agreement") among
Wells Fargo Bank Northwest, National Association, as Escrow Agent (in such
capacity, together with its successors in such capacity, the "Escrow Agent"),
Nyala Funding LLC, Wilmington Trust Company, as Pass Through Trustee (in such
capacity, together with its successors in such capacity, the "Pass Through
Trustee") and Wilmington Trust Company, as paying agent (in such capacity,
together with its successors in such capacity, the "Paying Agent"). Capitalized
terms not defined herein shall have the meanings assigned to them in the Escrow
and Paying Agent Agreement.

             This Escrow Receipt is issued under and is subject to the terms,
provisions and conditions of the Escrow and Paying Agent Agreement. By virtue of
its acceptance hereof the holder of this Escrow Receipt assents and agrees to be
bound by the provisions of the Escrow and Paying Agent Agreement and this Escrow
Receipt.

             This Escrow Receipt represents a fractional undivided interest in
amounts deposited from time to time in the Paying Agent Account, and grants or
represents no rights, benefits or interests of any kind in respect of any assets
or property other than such amounts. This Escrow Receipt evidences the same
percentage interest in the Account Amounts as the Fractional Undivided Interest
in the Pass Through Trust evidenced by the Certificate to which this Escrow
Receipt is affixed.

             All payments and distributions made to Receiptholders in respect of
the Escrow Receipt shall be made only from Account Amounts deposited in the
Paying Agent Account. The holder of this Escrow Receipt, by its acceptance of
this Escrow Receipt, agrees that it will look solely to the Account Amounts for
any payment or distribution due to it pursuant to this Escrow Receipt and that
it will not have any recourse to ATA, the Pass Through Trustee, the Paying Agent
or the Escrow Agent for any such payment or distribution, except as expressly
provided herein or in the Pass Through Trust Agreement. No Receiptholder of this
Escrow Receipt shall have any right to vote or in any manner otherwise control
the operation and management of the Paying Agent Account, nor shall anything set
forth herein, or contained in the terms of this Escrow Receipt, be construed so
as to constitute the Receiptholders from time to time as partners or members of
an association.

             This Escrow Receipt may not be assigned or transferred except in
connection with the assignment or transfer of the Certificate to which this
Escrow Receipt is affixed. After payment to the holder hereof of its Escrow
Interest in the Final Distribution, upon the request of

<PAGE>

                                       -2-

the Pass Through Trustee, the holder hereof will return this Escrow Receipt to
the Pass Through Trustee.

             The Paying Agent may treat the person in whose name the Certificate
to which this Escrow Receipt is attached as the owner hereof for all purposes,
and the Paying Agent shall not be affected by any notice to the contrary.

             THIS ESCROW RECEIPT SHALL BE GOVERNED BY AND CONSTRUED IN
ACCORDANCE WITH THE LAW OF THE STATE OF NEW YORK.

<PAGE>

             IN WITNESS WHEREOF, the Escrow Agent has caused this Escrow Receipt
to be duly executed.

Dated:

                                            WELLS FARGO BANK NORTHWEST,
                                            NATIONAL ASSOCIATION
                                            as Escrow Agent

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

<PAGE>

                                                                       EXHIBIT B

                             WITHDRAWAL CERTIFICATE
                                    (Class A)

Wells Fargo Bank Northwest, National Association,
as Escrow Agent

Dear Sirs:

             Reference is made to the Escrow and Paying Agent Agreement (Class
A), dated as of March 28, 2002 (as amended, modified or supplemented from time
to time in accordance with the terms thereof, the "Agreement"). [We hereby
certify to you that the conditions to the obligations of the undersigned to
execute a Participation Agreement pursuant to the Note Purchase Agreement have
been satisfied.] [We hereby notify you that the Depositary is being replaced in
accordance with Section 4(a)(vii) of the Note Purchase Agreement.] Pursuant to
Section 1.02(c) of the Agreement, please execute the attached Notice of
Withdrawal and immediately transmit by facsimile to the Depositary, at (212)
793-1246, Attention: Global Agency & Trust Services.

                                            Very truly yours,

                                            WILMINGTON TRUST COMPANY
                                            not in its individual capacity but
                                            solely as Pass Through Trustee

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

Dated: _________, ____

<PAGE>

                                      -2-

                                                                       EXHIBIT C

                        PREPAYMENT WITHDRAWAL CERTIFICATE
                                    (Class A)

Wells Fargo Bank Northwest, National Association,
as Escrow Agent

Dear Sirs:

             Reference is made to the Escrow and Paying Agent Agreement (Class
A), dated as of March 28, 2002 (as amended, modified or supplemented from time
to time in accordance with the terms thereof, the "Agreement"). The undersigned
has been notified by American Trans Air, Inc. (the "Company") that (i) as a
result of a downgrading of the Company's corporate credit ratings, General
Electric Capital Corporation has elected to exercise its contractual rights not
to act as an Owner Participant with respect to a GE Aircraft (as defined in the
Note Purchase Agreement), (ii) pursuant to the separate financing agreement
between the Company and General Electric Capital Corporation, the Company will
not own or lease such GE Aircraft and (iii) the Company will not identify and
substitute a Substitute Aircraft (as defined in the Note Purchase Agreement) for
such GE Aircraft. Pursuant to Section 1.02(d) of the Agreement, please execute
the attached Notice of Prepayment Withdrawal and immediately transmit by
facsimile to the Depositary, at (212) 793-1246, Attention: Global Agency and
Trust Services.

                                           Very truly yours,

                                           WILMINGTON TRUST COMPANY,
                                           not in its individual capacity but
                                           solely as Pass Through Trustee

                                            By
                                               ---------------------------------
                                               Name

Dated: _________, ____

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