Document:

EX-4.5

 Exhibit 4.5 
 EXECUTION VERSION 
 ESCROW AND PAYING AGENT AGREEMENT 

(Class C) 
 Dated
as of June 6, 2013 
 among 
 WILMINGTON TRUST, NATIONAL ASSOCIATION, 
 as Escrow Agent 

GOLDMAN, SACHS & CO., 
 as Underwriter 
 WILMINGTON TRUST COMPANY, 

not in its individual capacity, 
 but solely as Pass Through Trustee 
 for and on behalf of 

US Airways Pass Through Trust 2012-2C-O 
 and 
 WILMINGTON TRUST COMPANY, 

as Paying Agent 

 TABLE OF CONTENTS 

 

							
	SECTION 1.	 	 Escrow Agent.
	  	 	2	  
	 Section 1.01.
	 	 Appointment of Escrow Agent.
	  	 	2	  
	 Section 1.02.
	 	 Instruction; Etc.
	  	 	2	  
	 Section 1.03.
	 	 Initial Escrow Amount; Issuance of Escrow Receipts.
	  	 	4	  
	 Section 1.04.
	 	 Payments to Receiptholders.
	  	 	4	  
	 Section 1.05.
	 	 Mutilated, Destroyed, Lost or Stolen Escrow Receipt.
	  	 	4	  
	 Section 1.06.
	 	 Additional Escrow Amounts.
	  	 	5	  
	 Section 1.07.
	 	 Resignation or Removal of Escrow Agent.
	  	 	5	  
	 Section 1.08.
	 	 Persons Deemed Owners.
	  	 	5	  
	 Section 1.09.
	 	 Further Assurances.
	  	 	6	  
			
	 SECTION 2.
	 	 Paying Agent.
	  	 	6	  
	 Section 2.01.
	 	 Appointment of Paying Agent.
	  	 	6	  
	 Section 2.02.
	 	 Establishment of Paying Agent Account.
	  	 	6	  
	 Section 2.03.
	 	 Payments from Paying Agent Account.
	  	 	6	  
	 Section 2.04.
	 	 Withholding Taxes.
	  	 	7	  
	 Section 2.05.
	 	 Resignation or Removal of Paying Agent.
	  	 	7	  
	 Section 2.06.
	 	 Notice of Final Withdrawal.
	  	 	8	  
			
	SECTION 3.	 	 Payments.
	  	 	8	  
			
	SECTION 4.	 	 Other Actions.
	  	 	9	  
			
	SECTION 5.	 	 Representations and Warranties of the Escrow Agent.
	  	 	9	  
			
	SECTION 6.	 	 Representations and Warranties of the Paying Agent.
	  	 	10	  
			
	SECTION 7.	 	 Indemnification.
	  	 	11	  
			
	SECTION 8.	 	 Amendment, Etc.
	  	 	11	  
			
	SECTION 9.	 	 Notices.
	  	 	12	  
			
	SECTION 10.	 	 Transfer.
	  	 	12	  
			
	SECTION 11.	 	 Entire Agreement.
	  	 	13	  
			
	SECTION 12.	 	 Governing Law.
	  	 	13	  
			
	SECTION 13.	 	 Waiver of Jury Trial Right.
	  	 	13	  
			
	SECTION 14.	 	 Counterparts.
	  	 	13	  
			
	SECTION 15.	 	 Rights of Holders.
	  	 	13	  

			
	Exhibit A	  	Escrow Receipt
		
	Exhibit B	  	Withdrawal Certificate

 ESCROW AND PAYING AGENT AGREEMENT (Class C) dated as of June 6, 2013, (as amended,
modified or supplemented from time to time, this “Agreement”) among WILMINGTON TRUST, NATIONAL ASSOCIATION, a national banking association, as Escrow Agent (in such capacity, together with its successors in such capacity, the
“Escrow Agent”); GOLDMAN, SACHS & CO., as the Underwriter of the Certificates referred to below (the “Underwriter” and together with its respective transferees and assigns as registered owners of the
Certificates, the “Investors”) under the Underwriting Agreement referred to below; WILMINGTON TRUST COMPANY, not in its individual capacity except as otherwise expressly provided herein, 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, 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, US Airways, Inc. (“US Airways”) and the Pass Through Trustee
have entered into a Trust Supplement, dated as of June 6, 2013 (the “Trust Supplement”), to the Pass Through Trust Agreement, dated as of December 21, 2010 (together, as amended, modified or supplemented from time to time
in accordance with the terms thereof, the “Pass Through Trust Agreement”) relating to US Airways Pass Through Trust 2012-2C-O (the “Pass Through Trust”) pursuant to which the US Airways Pass Through Trust, Series
2012-2C-O Certificates referred to therein (the “Certificates”) are being issued (the date of such issuance, the “Issuance Date”); 
 WHEREAS, US Airways and the Underwriter has entered into an Underwriting Agreement dated as of May 22, 2013 (as amended, modified or supplemented from time to time in accordance with the terms
thereof, the “Underwriting Agreement”) pursuant to which the Pass Through Trustee will issue and sell the Certificates to the Underwriter; 
 WHEREAS, US Airways and the Pass Through Trustee are entering into the Series C Note Purchase Agreement, dated as of the date hereof (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 certain aircraft
to be acquired by US Airways, as owner, utilizing a portion of the proceeds from the sale of the Certificates (the “Net Proceeds”); 
 WHEREAS, the Underwriter and the Pass Through Trustee intend to create an escrow and 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 the Net Proceeds be deposited on behalf of the Escrow
Agent with The Bank of New York Mellon, 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 are
transferred to such Replacement Depositary) under the Deposit Agreement, dated as of the date hereof between the Depositary and the Escrow Agent relating to the Pass Through Trust (as amended, modified, supplemented or replaced from time to time in
accordance with the terms thereof, the “Deposit Agreement”, which shall also 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 request of and proper certification by the Pass Through Trustee; 
 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 Underwriter, for and on behalf of each of the Investors, 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 money received and held by the Escrow Agent under this Agreement or the Deposit Agreement shall be held in escrow by the Escrow Agent in accordance with the terms of this Agreement. This Agreement is irrevocable and
the Investors’ and the Pass Through Trustee’s rights with respect to any monies received and held in escrow 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 expressly set forth in this 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 than itself contained
in this Agreement or the Deposit Agreement or for the failure by the Pass Through Trustee, the Investors 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 Underwriter, for and on
behalf of each of the Investors, hereby irrevocably instruct the Escrow Agent, and the Escrow Agent agrees: 

(a) to enter into the Deposit Agreement, and, if requested by the Company pursuant to Section 4(a)(vi) of the Note
Purchase Agreement, to enter into a Replacement Deposit Agreement with the Replacement Depositary specified by the Company; 

  
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 (b) to appoint the Paying Agent as provided 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 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: 

(X) 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 five Business Days after such notice is given (the “Replacement Withdrawal Date”), of all Deposits then held by the Depositary together with all accrued and unpaid interest on such Deposits to
but excluding the Replacement Withdrawal Date; and 
 (Y) direct the Depositary to transfer such Deposits and
accrued interest on behalf of the Escrow Agent to the Replacement Depositary in accordance with the Replacement Deposit Agreement; and 
 (e) if there are any undrawn Deposits (as defined in the Deposit Agreement) on the “Termination Date”, which shall mean the earlier of (i) December 2, 2013, and (ii) the
day on which the Escrow Agent receives 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 immediately 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
25th 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 November 11,
2013 and there are unwithdrawn Deposits on such date, the Final Withdrawal Date shall be deemed to be December 2, 2013. 

  
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 Section 1.03. Initial Escrow Amount; Issuance of Escrow Receipts. The Escrow
Agent hereby directs the Underwriter to, and the Underwriter hereby acknowledges that on the date hereof it shall, irrevocably deliver to the Depositary on behalf of the Escrow Agent, an amount in U.S. dollars (“Dollars”) and
immediately available funds equal to $100,000,000 for deposit on behalf of the Escrow Agent with the Depositary in accordance with Section 2.1 of the Deposit Agreement. The Underwriter hereby instructs the Escrow Agent, upon receipt of such sum
from the Underwriter, 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 below) 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 name of the same holder that is the holder
of 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 or, if the Final Withdrawal Date is not a Regular Distribution Date
and any Equipment Notes have been purchased by the Pass Through Trustee prior to such Final Withdrawal Date, the next succeeding Regular Distribution Date (the “Final Distribution”). After the Final Distribution, no additional
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 (as defined below) (“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 (subject to Section 15 hereof) and (b) it will have no recourse to US Airways, the Pass Through Trustee, the
Paying Agent or the Escrow Agent, 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 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 bona fide 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 

  
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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. Any successor Escrow Agent shall be a bank or trust company 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 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 each of Fitch Ratings Ltd., Moody’s Investors Service, Inc. and Standard & Poor’s Ratings Services, a Standard & Poor’s Financial Services LLC
business, 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 

  
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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 neither the Escrow Agent nor 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. 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 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 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) 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 Paying 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 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 

  
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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”), such distribution shall be made by wire transfer in immediately available funds to the account designated by DTC. 

(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. There shall be so distributed 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 the Record Date in the name of DTC, such distribution shall be made by wire transfer in
immediately available funds to the account designated by DTC. 
 (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) The Paying Agent shall include with any check mailed
pursuant to this Section 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 the Final Withdrawal any and all withholding taxes applicable thereto as required by law. 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. 
 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. If no successor Paying Agent shall have been so appointed and shall have accepted such 

  
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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 appoint a
successor Paying Agent. Any successor Paying Agent shall be a bank or trust company 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 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 Final Withdrawal. Promptly after receipt by the Paying Agent of notice that the Escrow Agent has requested a Final Withdrawal or that 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 Final Withdrawal Date. Such notice shall set forth: 

(i) the Final Withdrawal Date and the date for determining Receiptholders of record who shall be entitled to receive
distributions in respect of the Final Withdrawal, 
 (ii) the amount of the payment in respect of the 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 Final Withdrawal Date is the same date as a Regular Distribution Date, the total amount to be received on
such date for 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 all amounts payable to the Escrow Agent under the Deposit Agreement be paid by the
Depositary directly to the Paying Agent, the Pass Through Trustee or a Replacement Depositary (depending on the circumstances), the Escrow Agent receives any 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) 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, 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 similar right (whether arising under applicable law, contract or otherwise) it may have
against amounts payable to the Paying Agent howsoever arising. 

  
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 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 US Airways, 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
(other than a Replacement Deposit 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 or thereof 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 United States federal or state governmental authority or regulatory body is required for the execution, delivery or performance by it of this Agreement, the Deposit Agreement or any Replacement Deposit
Agreement; 
 (v) neither the execution, delivery or performance by it of this Agreement, 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 

  
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 (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, 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 US Airways, the Investors, the Escrow Agent and the Pass Through Trustee as follows: 
 (i) it is a Delaware trust company duly organized and validly existing in good standing under the laws of its jurisdiction of incorporation; 

(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 United
States federal or state governmental authority or regulatory body 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 

  
 10 

 
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. 

SECTION 7. Indemnification. Except for actions expressly 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 US Airways requests any amendment to any Operative Agreement (as defined in the Note Purchase Agreement), the Pass Through
Trustee agrees to pay all reasonable fees and expenses (including, without limitation, 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
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, provided that upon request of the Pass Through Trustee and
without any consent of the Investors, the Escrow Agent and Paying 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 any requirement of the SEC, applicable law, rules or regulations of any exchange or quotation system on
which the Certificates are listed or any 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. 

  
 11 

 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, Wilmington Trust, National Association, 1100 North Market Street, Wilmington, DE 19890-1605, Attention: Corporate Trust Administration (Telecopier: 302-636-4140) (c) in the
case of the Pass Through Trustee, Wilmington Trust Company, 1100 North Market Street, Wilmington, DE 19890-1605, Attention: Corporate Trust Administration (Telecopier: (302) 636-4140) or (d) in the case of the Paying Agent, Wilmington
Trust Company, 1100 North Market Street, Wilmington, DE 19890-1605, Attention: Corporate Trust Administration (Telecopier: (302) 636-4140), in each case with a copy to US Airways, Inc., 111 West Rio Salado Parkway, Tempe, Arizona 85281,
Attention: Vice President and Treasurer Treasurer (Telecopier: (480) 693-5886) with a copy to: Deputy General Counsel (Telecopier: (480) 693-5932) (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. 

The Escrow Agent shall notify the Receiptholders in the event of a default in the payment of interest on the Deposits when due in
accordance with the Deposit Agreement or a default in the payment of any Final Withdrawal in accordance with the terms of the Deposit Agreement and this Agreement and shall promptly forward to Receiptholders upon receipt copies of all written
communications relating to any payments due to the Receiptholders in respect of the Deposits. 
 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. Upon the occurrence of the Transfer (as defined below) contemplated by the Assignment and Assumption Agreement (as defined below), the Pass Through Trustee shall (without further act) be deemed
to have transferred all of its right, title and interest in and to this Agreement to the trustee of the Successor Trust (as defined below) and, thereafter, the trustee of the Successor Trust shall be deemed to be the “Pass Through Trustee”
hereunder with the rights and obligations of the “Pass Through Trustee” hereunder and each reference herein to “US Airways Pass Through Trust 2012-2C-O” shall be deemed to be a reference to “US Airways Pass Through Trust
2012-2C-S”. The parties hereto hereby acknowledge and consent to the Transfer contemplated by the Assignment and Assumption Agreement. As used herein, “Transfer” means the transfers of the assets to the Successor Trust
contemplated by the Assignment and Assumption Agreement; “Assignment and Assumption Agreement” means the Assignment and Assumption Agreement to be entered into 

  
 12 

 
between the Pass Through Trustee and the trustee of the Successor Trust, substantially in the form of Exhibit C to the Trust Supplement; “Successor Trust” means the US Airways
Pass Through Trust 2012-2C-S. 
 SECTION 11. Entire Agreement. This Agreement sets forth all of the promises, covenants,
agreements, conditions and understandings among the Escrow Agent, the Paying Agent, the Underwriter 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 12. Governing Law. This Agreement shall be
governed by, and construed in accordance with, the law of the State of New York. 
 SECTION 13. 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 14. Counterparts. This Agreement may be executed in one or more
counterparts, all of which taken together shall constitute one instrument. 
 SECTION 15. Rights of Holders. Each
Receiptholder shall have the right (individually and without the need for any other action of any Person, including the Escrow Agent or any other Receiptholder), upon any default in the payment of interest on the Deposits when due by the Depositary
in accordance with the Deposit Agreement, or upon any default in the payment of the Final Withdrawal when due by the Depositary in accordance with the terms of the Deposit Agreement and this Agreement, (i) to proceed directly against the
Depositary by making a demand to the Depositary for the portion of such payment that would have been distributed to such Receiptholder pursuant to this Agreement or by bringing suit to enforce payment of such portion and (ii) to enforce any
other rights that the Escrow Agent may have in respect of amounts due from the Depositary under the Deposit Agreement and this Agreement that would have been distributed to such Receiptholder pursuant to this Agreement. Any recovery on such
enforcement action shall belong solely to the Receiptholder who brought such action, and not to the Escrow Agent or any other Receiptholder individually or to Receiptholders as a group. 

  
 13 

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

					
	WILMINGTON TRUST, NATIONAL ASSOCIATION,
	as Escrow Agent
		
	By	 	 /s/ Rita Marie Ritrovato

		 	Name:	 	Rita Marie Ritrovato
		 	Title:	 	Assistant Vice President
	
	WILMINGTON TRUST COMPANY, not in its individual capacity, but solely as Pass Through Trustee for and on behalf of US Airways Pass Through Trust
2012-2C-O
		
	By	 	 /s/ Rita Marie Ritrovato

		 	Name:	 	Rita Marie Ritrovato
		 	Title:	 	Assistant Vice President
	
	WILMINGTON TRUST COMPANY,
		 	as Paying Agent
		
	By	 	 /s/ Rita Marie Ritrovato

		 	Name:	 	Rita Marie Ritrovato
		 	Title:	 	Assistant Vice President

 
					
	By :	 	GOLDMAN, SACHS & CO.,
	as Underwriter
		
	By	 	 /s/ Michael Hickey

		 	Name:	 	Michael Hickey
		 	Title:	 	VP

 EXHIBIT A 
 US AIRWAYS 2012-2C ESCROW RECEIPT 
 No.
         
 This Escrow Receipt evidences a fractional undivided interest in amounts
(“Account Amounts”) from time to time deposited on behalf of the holder hereof into a certain paying agent account (the “Paying Agent Account”) described in the Escrow and Paying Agent Agreement (Class C) dated as
of June 6, 2013 (as amended, modified or supplemented from time to time, the “Escrow and Paying Agent Agreement”) among Wilmington Trust, National Association, as Escrow Agent (in such capacity, together with its successors in
such capacity, the “Escrow Agent”), Goldman, Sachs & Co., as Underwriter, 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 (or, in case the Depositary shall default in its obligation to make a payment under the Deposit Agreement that would be an Account Amount, to the
Depositary) and that it will not have any recourse to US Airways, the Pass Through Trustee, the Paying Agent or the Escrow Agent, except as expressly provided herein or in the Pass Through Trust Agreement. No Receiptholder of this Escrow Receipt
shall have any right to vote on 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 the Pass Through
Trustee, the holder hereof will return this Escrow Receipt to the Pass Through Trustee. 

  
 1 

 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. 

  
 2 

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

 Dated: [            ], 2013 

 

			
	WILMINGTON TRUST, NATIONAL ASSOCIATION,
		 	as Escrow Agent
		
	By 	 	  

		 	Name:
		 	Title:

  
 3 

 EXHIBIT B 
 WITHDRAWAL CERTIFICATE 
 (Class C) 

WILMINGTON TRUST, NATIONAL ASSOCIATION 
 as Escrow Agent 
 Dear Sirs: 

Reference is made to the Escrow and Paying Agent Agreement, dated as of June 6, 2013 (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)(vi) of the Note Purchase Agreement]. Pursuant to Section [1.02(c)][1.02(d)] of the Agreement, please execute the attached [Notice of Purchase Withdrawal][Notice of Replacement Withdrawal] and immediately transmit by facsimile to
the Depositary, at [                    ], Attention:
[                    ]. 
  

			
	Very truly yours,
	
	WILMINGTON TRUST COMPANY, not in its individual capacity but solely as Pass Through Trustee
		
	By 	 	  

		 	Name:
		 	Title:

 Dated:             , 20EX-4.6

 Exhibit 4.6 
 EXECUTION VERSION 
  
  

NOTE PURCHASE AGREEMENT 
 Dated as of June 6, 2013 
 among 

US AIRWAYS, INC., 

and 
 WILMINGTON
TRUST COMPANY, 
 as Pass Through Trustee under each of the 

Pass Through Trust Agreements, 
 Subordination Agent, Paying Agent, and 
 Indenture Trustee under each Trust
Indenture 
 WILMINGTON TRUST COMPANY, NATIONAL ASSOCIATION. 

as Escrow Agent 
  

 

 INDEX TO NOTE PURCHASE AGREEMENT 

 

							
	 	 	 	  	Page	 
			
	SECTION 1.	 	 Sale of Additional Series Equipment Notes on the Issuance Date
	  	 	3	  
	SECTION 1A.	 	 Financing of Aircraft
	  	 	4	  
	SECTION 2.	 	 Conditions Precedent
	  	 	6	  
	SECTION 3.	 	 Representations and Warranties
	  	 	7	  
	SECTION 4.	 	 Covenants
	  	 	13	  
	SECTION 5.	 	 Notices
	  	 	16	  
	SECTION 6.	 	 [Intentionally Omitted]
	  	 	16	  
	SECTION 7.	 	 Further Assurances
	  	 	16	  
	SECTION 8.	 	 Miscellaneous
	  	 	16	  
	SECTION 9.	 	 Governing Law
	  	 	17	  

 Schedules 
  

			
	Schedule I	  	Aircraft

 Annex 
  

			
	Annex A	  	Definitions

 Exhibits 
  

			
	Exhibit A	  	Form of Participation Agreement Amendment
	Exhibit B	  	Form of Indenture Amendment
	Exhibit C	  	Form of Intercreditor Amendment
	Exhibit D	  	Form of Opinion of Latham & Watkins LLP
	Exhibit E	  	Form of Opinion of Squire, Sanders & Dempsey, L.L.P.
	Exhibit F-1	  	Form of Opinion of Morris James LLP
	Exhibit F-2	  	Form of Opinion of Morris James LLP
	Exhibit G	  	Form of Opinion of Daugherty, Fowler, Peregrin, Haught & Jenson

 NOTE PURCHASE AGREEMENT 

This NOTE PURCHASE AGREEMENT, dated as of June 6, 2013 (the “Agreement”), among (i) US AIRWAYS, INC., a
Delaware corporation (the “Company”), (ii) WILMINGTON TRUST COMPANY (“WTC”), a Delaware trust company, not in its individual capacity except as otherwise expressly provided herein, but solely as trustee (in
such capacity together with its successors in such capacity, the “Pass Through Trustee”) under each of the three separate Pass Through Trust Agreements, as subordination agent and trustee (in such capacity together with its
successors in such capacity, the “Subordination Agent”) under the Intercreditor Agreement and as indenture trustee (in such capacity together with its successors in such capacity, the “Indenture Trustee”) under each
Trust Indenture, (iii) WILMINGTON TRUST, NATIONAL ASSOCIATION, a national association, as Escrow Agent (in such capacity together with its succesors in such capacity, the “Escrow Agent”) under each of the Escrow and Paying Agent
Agreements (as defined below), and (iv) WILMINGTON TRUST COMPANY, a Delaware trust company, as Paying Agent (in such capacity together with its successors in such capacity, the “Paying Agent”) under each of the Escrow and Paying Agent
Agreements. 
 W I T N E S S E T H: 
 WHEREAS, capitalized terms used but not defined herein shall have the meanings ascribed to such terms in Annex A hereto; 
 WHEREAS, on December 13, 2012, the Company caused the Class A Pass Through Trustee and the Class B Pass Through Trustee to issue and sell an aggregate principal amount of $546,184,000 of
Class A Certificates and Class B Certificates. The proceeds from the sale of the Class A Certificates and Class B Certificates were deposited with the Class A Depositary and Class B Depositary, respectively, in accordance with the
Class A/B Note Purchase Agreement, the Class A Deposit Agreement and the Class B Deposit Agreement and a portion of such Deposits has been used by the Class A Pass Through Trustee and the Class B Pass Through Trustee to purchase Series A
Equipment Notes and Series B Equipment Notes, respectively, issued by the Company and secured by the Owned Aircraft (as defined below) (the “Prior Series”). 
 WHEREAS, the agreements relating to the Class A Certificates and Class B Certificates permit the Company to issue Series C Equipment Notes secured by the Aircraft but subordinated to the Series A
Equipment Notes and the Series B Equipment Notes, subject to the terms and conditions of the Trust Indentures and the Intercreditor Agreement, and the Company now wishes to issue and sell such Series C Equipment Notes; 

WHEREAS, the Company (i) is currently the owner of the aircraft listed in Part A of Schedule I hereto (the “Owned
Aircraft”), which are subject to an existing security interest in favor of the Indenture Trustee under the applicable Indentures, and (ii) has obtained commitments from the Manufacturer pursuant to the Aircraft Purchase Agreement for
the delivery of the aircraft listed in Part B of Schedule I hereto (together with any aircraft substituted therefor in accordance with the Aircraft Purchase Agreement prior to the delivery thereof, the “New Aircraft”); 

 WHEREAS, pursuant to the Basic Pass Through Trust Agreement as supplemented by the Trust
Supplement 2012-2C between the Pass Through Trustee and the Company (the “Class C Pass Through Trust Agreement”), and concurrently with the execution and delivery of this Agreement, a grantor trust (the “Class C Pass Through
Trust”) has been created to facilitate the transactions contemplated hereby, including, without limitation, the issuance and sale of an additional class of pass through certificates pursuant thereto (the “Class C
Certificates”); 
 WHEREAS, in connection with the issuance of the Class A Certificates and the Class B
Certificates, the Subordination Agent, the Class A Pass Through Trustee, the Class B Pass Through Trustee and the liquidity provider for the Class A Certificates and the Class B Certificates entered into the Intercreditor Agreement dated
as of December 13, 2012, and such Intercreditor Agreement will be amended pursuant to the Amendment No. 1 to Intercreditor Agreement dated as of the date hereof (the “Intercreditor Amendment”) in the form provided in
Exhibit C hereto to add the Class C Pass Through Trustee as a party to the Intercreditor Agreement and to provide for certain additional amendments to give effect to the issuance of the Class C Certificates (as so amended, the “Intercreditor
Agreement”); 
 WHEREAS, the Company has entered into the Underwriting Agreement, dated as of November 29, 2012
(the “Underwriting Agreement”) with the Underwriter named therein (the “Underwriter”), which provides that the Company will cause the Class C Pass Through Trustee under the Class C Pass Through Trust to issue and
sell the Class C Certificates to the Underwriter on the Issuance Date; 
 WHEREAS, US Airways Group, Inc., a Delaware
corporation, will confirm its Guarantee of the payment obligations of the Company under the Trust Indentures, the Participation Agreements and the Equipment Notes (including the Series C Equipment Notes) pursuant to a guarantee confirmation dated as
of the Issuance Date (the “Guarantee Confirmation”) ; 
 WHEREAS, as required by the Underwriting Agreement and
the Note Purchase Agreement dated December 13, 2012 relating to the Class A Certificates and the Class B Certificates, the Company has obtained written confirmation from the Rating Agencies that the terms of the Class C Certificates will
not result in a withdrawal, suspension or downgrading of the ratings of the Class A Certificates or Class B Certificates; and 
 WHEREAS, pursuant to the terms of the Class C Pass Through Trust Agreement and this Agreement, on the date of this Agreement the Class C Pass Through Trustee will purchase, and the Company will issue and
sell, the Series C Equipment Notes in the respective principal amounts listed in Schedule I hereto, which shall be secured by the related Aircraft set forth in such Schedule. 
 WHEREAS, concurrently with the execution and delivery of this Agreement, (i) the Escrow Agent and the Depositary have entered into the Deposit Agreement, dated as of the date hereof (the
“Class C Deposit Agreement,” together with the Class A Deposit Agreement and Class B Deposit Agreement, the “Deposit Agreements”), whereby the Escrow Agent agreed to direct the Underwriter to make certain
deposits referred to therein on the Issuance Date in the 

 
amount of the proceeds from the sale of the Certificates not used to purchase Series C Equipment Notes on the Issuance Date (the “Initial Deposits”) and to permit the Pass
Through Trustee to make additional deposits from time to time thereafter (the Initial Deposits together with such additional deposits are collectively referred to as the “Deposits”) and (ii) the Pass Through Trustee,
Underwriter, Paying Agent and Escrow Agent have entered into the Escrow and Paying Agent Agreement, dated as of the date hereof (the “Escrow and Paying Agent Agreement”), whereby, among other things, (a) the Underwriter agreed
to deliver an amount equal to the amount of the Initial Deposits to the Depositary on behalf of the Escrow Agent and (b) the Escrow Agent, upon the Depositary receiving such amount, agreed to deliver escrow receipts to be affixed to each
Certificate. 
 WHEREAS, upon receipt of a Closing Notice, subject to the terms and conditions of this Agreement, the Pass
Through Trustee will enter into the applicable Participation Agreement Amendment and Indenture Amendment relating to each Aircraft. 
 WHEREAS, upon the financing of each New Aircraft hereunder, the Pass Through Trustee will fund its purchase of Series C Equipment Notes with the proceeds of one or more Deposits withdrawn by the Escrow
Agent under the Class C Deposit Agreement. 
 NOW, THEREFORE, in consideration of the foregoing premises and the mutual
agreements herein contained and other good and valuable consideration, the receipt and adequacy of which are hereby acknowledged, the parties hereto agree as follows: 
 SECTION 1. Sale of Series C Equipment Notes on the Issuance Date. Subject to the satisfaction of the conditions set forth in Section 2, at the closing under the Underwriting Agreement,
simultaneously with the purchase and sale of the Class C Certificates thereunder, the applicable parties hereto shall take the following actions: 
 (a) the Company, the Class C Pass Through Trustee and the Subordination Agent shall enter into the Intercreditor Amendment; 
 (b) the Company, the Class A Pass Through Trustee, the Class B Pass Through Trustee, the Class C Pass Through Trustee, the Subordination Agent and the Indenture Trustee shall enter into a
Participation Agreement Amendment with respect to each Participation Agreement in substantially the form provided in Exhibit A hereto “Participation Agreement Amendment”); 

(c) the Company and the Indenture Trustee shall enter into an Indenture Amendment with respect to each Trust Indenture in substantially
the form provided in Exhibit B hereto (the “Indenture Amendment”); 
 (d) the Company shall issue pursuant to
each Trust Indenture, as amended by the applicable Indenture Amendment, a Series C Equipment Note in the principal amount set forth in Schedule I hereto corresponding to such Trust Indenture, the Indenture Trustee under such Trust Indenture shall
authenticate such Series C Equipment Note and the Company shall deliver such Series C Equipment Note, against receipt of the payment referred to in Section 1(e), to the Subordination Agent, to be held for the benefit of the Class C Pass Through
Trustee in accordance with the Intercreditor Agreement; and 

 (e) The Class C Pass Through Trustee shall pay or cause to be paid to the Company
$40,106,000, by wire transfer of immediately available funds. 
 SECTION 1A. Financing of Aircraft. (a) The Company
confirms that (i) it currently owns the Owned Aircraft and (ii) it has entered into the Aircraft Purchase Agreement with the Manufacturer pursuant to which the Company has agreed to purchase, and the Manufacturer has agreed to deliver, the
New Aircraft in the months specified in Schedule I hereto, all on and subject to terms and conditions specified in the Aircraft Purchase Agreement. The Company agrees to finance the New Aircraft in the manner provided herein, all on and subject to
the terms and conditions hereof and of the relevant Financing Agreements. 
 (b) In furtherance of the foregoing, the Company
agrees to give the parties hereto, the Depositary and each of the Rating Agencies not less than two Business Days’ prior notice substantially in the form of Exhibit A hereto (a “Closing Notice”) of the scheduled closing
date (the “Scheduled Closing Date”) (or, in the case of a substitute Closing Notice under Section 1A(e) or (f) hereof, one Business Day’s prior notice) in respect of the financing of each New Aircraft under this
Agreement, which notice shall: 
 (i) specify the Scheduled Closing Date of such New Aircraft (which shall be a Business Day
before the Cut-off Date and, except as provided in Section 1A(f) hereof, the date (the “Funding Date”) on which the financing therefor in the manner provided herein shall be consummated); 

(ii) instruct each Pass Through Trustee being requested to purchase Equipment Notes pursuant to such Closing Notice (the
“Applicable Pass Through Trustees”) to enter into the Participation Agreement included in the Financing Agreements with respect to such New Aircraft in such form and at such a time on or before the Funding Date specified in such
Closing Notice and to perform its obligations thereunder; 
 (iii) instruct the Class C Pass Through Trustee to instruct the
relevant Escrow Agent to provide a Notice of Purchase Withdrawal to the Depositary with respect to the Equipment Notes to be issued to such Pass Through Trustee in connection with the financing of such New Aircraft; and 

(iv) specify the aggregate principal amount of each series of Equipment Notes, if any, to be issued, and purchased by the Applicable Pass
Through Trustees, in connection with the financing of such New Aircraft scheduled on such Funding Date (which shall in all respects comply with the Required Terms). 
 (c) Upon receipt of a Closing Notice, the Applicable Pass Through Trustees shall, and shall cause the Subordination Agent to, enter into and perform their respective obligations under the Participation
Agreement specified in such Closing Notice, provided that such Participation Agreement and the Trust Indenture to be entered into pursuant to such Participation Agreement shall be in the forms thereof annexed to the Class A/B Note Purchase
Agreement in all material respects and, if modified in any material respect, as to which Rating Agency Confirmation shall have been obtained from each Rating Agency by the Company (to be delivered by the Company to the Applicable Pass Through
Trustees on or before the relevant 

 
Funding Date, it being understood that if Rating Agency Confirmation shall have been received with respect to any Financing Agreements and such Financing Agreements are utilized for subsequent
New Aircraft (or Substitute Aircraft) without material modifications, no additional Rating Agency Confirmation shall be required); provided, however, that the relevant Financing Agreements as executed and delivered shall not vary the
Required Terms. Notwithstanding the foregoing, a Trust Indenture may be modified to the extent required for the issuance of Equipment Notes pursuant to Section 4(a)(v) of this Agreement, subject to the terms of such Section and
Section 9.1(c) of the Intercreditor Agreement. The Company shall pay the reasonable costs and expenses of the Rating Agencies in connection with obtaining any such Rating Agency Confirmation. With respect to each New Aircraft, the Company shall
cause WTC (or such other person that meets the eligibility requirements to act as indenture trustee under the Trust Indenture) to execute as Indenture Trustee the Financing Agreements relating to such Aircraft to which such Indenture Trustee is
intended to be a party, and shall concurrently therewith execute such Financing Agreements to which the Company is intended to be a party and perform its respective obligations thereunder. Upon the request of either Rating Agency, the Company shall
deliver or cause to be delivered to such Rating Agency a true and complete copy of each Financing Agreement relating to the financing of each New Aircraft together with a true and complete set of the closing documentation (including legal opinions)
delivered to the related Indenture Trustee, Subordination Agent and Pass Through Trustee under the related Participation Agreement. 
 (d) The Company agrees that all Equipment Notes issued pursuant to any Trust Indenture shall initially be registered in the name of the Subordination Agent on behalf of the Applicable Pass Through
Trustee. 
 (e) If, after giving any Closing Notice, there shall be a delay in the delivery of the New Aircraft referred to
therein, or if on the Scheduled Closing Date of the New Aircraft referred to therein the financing thereof in the manner contemplated hereby shall not be consummated for whatever reason, the Company shall give the parties hereto and the Depositary
prompt notice thereof. Concurrently with the giving of such notice of postponement or subsequently, the Company shall give the parties hereto and the Depositary a substitute Closing Notice specifying the date to which the financing of such New
Aircraft (or of another New Aircraft of the same model in lieu thereof) shall have been re-scheduled (which shall be a Business Day before the Cut-off Date on which the Escrow Agents shall be entitled to withdraw one or more Deposits under each of
the applicable Deposit Agreements to enable each of the Class A, Class B and Class C Pass Through Trustees to fund its purchase of the related Equipment Notes). Upon receipt of any such notice of postponement, each Applicable Pass Through
Trustee shall comply with its obligations under Section 5.01 of each of the Trust Supplements and thereafter the financing of such New Aircraft, as specified in such substitute Closing Notice, shall take place on the re-scheduled Closing Date
therefor (all on and subject to the terms and conditions of the relevant Financing Agreements) unless further postponed as provided herein. 
 (f) Anything in this Section 1A to the contrary notwithstanding, the Company shall have the right to accept delivery of a New Aircraft under the Aircraft Purchase Agreement on the Delivery Date
thereof by utilization of bridge financing of such New Aircraft and promptly thereafter give the parties hereto and the Depositary a Closing Notice specifying a 

 
Funding Date not later than 90 days after the Delivery Date of such New Aircraft and no later than the Cut-off Date and otherwise complying with the provisions of Section 1A(b) hereof. All
other terms and conditions of this Note Purchase Agreement shall apply to the financing of any such New Aircraft on the re-scheduled Funding Date therefor except the related Financing Agreements shall be amended to reflect the original delivery of
such New Aircraft to the Company. 
 (g) If the scheduled delivery date from the Manufacturer for any New Aircraft is delayed
more than 30 days beyond the last day of the month set forth opposite such New Aircraft under the heading “Scheduled Delivery Months” in Part B of Schedule I hereto, the Company may identify for delivery a substitute aircraft therefor
meeting the following conditions (a “Substitute Aircraft”): (i) a Substitute Aircraft must be of the same model as the New Aircraft being replaced and (ii) the Company shall be obligated to obtain Rating Agency
Confirmation in respect of the replacement of any New Aircraft by Substitute Aircraft. Upon the satisfaction of the conditions set forth above with respect to a Substitute Aircraft, the New Aircraft to be replaced shall cease to be subject to this
Agreement and all rights and obligations of the parties hereto concerning such New Aircraft shall cease, and such Substitute Aircraft shall become and thereafter be subject to the terms and conditions of this Agreement to the same extent as such New
Aircraft. 
 (h) The Company shall have no liability for the failure of the Pass Through Trustees to purchase Equipment Notes
with respect to any New Aircraft or Substitute Aircraft. 
 (i) Anything herein to the contrary notwithstanding, and except for
any Equipment Notes purchased on the Issuance Date, the Company shall not have the right, and shall not be entitled, at any time to request the issuance of Equipment Notes of any series to the Class C Pass Through Trustee in an aggregate principal
amount in excess of the amount of the Deposits then available for withdrawal by the Escrow Agent under and in accordance with the provisions of the related Deposit Agreement. 
 SECTION 2. Conditions Precedent. The obligations of the Pass Through Trustees, the Subordination Agent and the Indenture Trustee to take the actions set forth in Section 1 are subject to the
satisfaction of the following conditions: 
 (a) the Pass Through Trustees, the Subordination Agent and the Indenture Trustee
shall have received the following documents; 
 (i) this Agreement; 

(ii) the Guarantee Confirmation; 
 (iii) the broker’s report and insurance certificates described in Section E of Annex B of the Trust Indenture with respect to each Owned Aircraft; 

(iv) an officer’s certificate of the Company, dated as of the Issuance Date, stating that its representations and
warranties set forth in this Agreement are true and correct as of the Issuance Date (or, to the extent that any such representation and warranty expressly related to an earlier date, true and correct as of such earlier date); and 

 (v) the following opinions of counsel, in each case, dated the Issuance
Date: 
 (A) an opinion of Latham & Watkins LLP, special counsel to the Owner, substantially in the form
of Exhibit D; 
 (B) an opinion of Squire, Sanders & Dempsey, L.L.P., regulatory counsel to the Owner,
substantially in the form of Exhibit E; 
 (C) the opinions of Morris James LLP, special counsel to the Indenture
Trustee and the Pass Through Trustees, each substantially in the forms of Exhibits F-1 and F-2, respectively; and 
 (D) an opinion of Daugherty, Fowler, Peregrin, Haught & Jenson, special counsel in Oklahoma City, Oklahoma, substantially in the form of Exhibit G; 

(b) the Indenture Trustee with respect to each Trust Indenture shall be entitled to the benefits of Section 1110 (as currently in
effect) with respect to the right to take possession of the Airframe and Engines secured under such Trust Indenture and to enforce any of its other rights or remedies as provided in such Trust Indenture in the event of a case under Chapter 11 of the
Bankruptcy Code in which the Company is a debtor; 
 (c) on the Issuance Date the Indenture Amendments shall have been duly
filed for recordation (or shall be in the process of being so duly filed for recordation) with the FAA in accordance with the Act; and 
 (d) no Triggering Event shall have occurred 
 SECTION 3. Representations and
Warranties. (a) The Company represents and warrants that: 
 (i) the Company is duly incorporated,
validly existing and in good standing under the laws of the State of Delaware and is a “citizen of the United States” as defined in Section 40102(a)(15) of the Act, and has the full corporate power, authority and legal right under the
laws of the State of Delaware to execute and deliver this Agreement, the Intercreditor Amendment, each Participation Agreement Amendment, each Indenture Amendment and each Series C Equipment Note referred to in Section 1 hereof (each of the
foregoing documents herein called a “Transaction Document” and collectively, the “Transaction Documents”) and to carry out the obligations of the Company under this Agreement and each other Transaction Document to
which it will be a party; 
 (ii) the execution and delivery by the Company of this Agreement and each other
Transaction Document and the performance by the Company of its obligations under this Agreement and each other Transaction Document have been duly authorized by the Company and will not (A) violate any provision of its Certificate of
Incorporation or by-laws, (B) violate any Law applicable to or 

 
binding on the Company or (C) violate or constitute any default under (other than any violation or default that would not result in a Material Adverse Change to Owner), or result in the
creation of any Lien (other than as permitted under the Trust Indentures) upon any Aircraft under, any indenture, mortgage, chattel mortgage, deed of trust, conditions sales contract, lease, loan or other material agreement, instrument or document
to which it is a party or by which it or any of its properties is bound; 
 (iii) the execution and delivery by
the Company of this Agreement and the other Transaction Documents to which the Company is or will be a party, the performance by the Company of its obligations hereunder and thereunder and the consummation by the Company on the Issuance Date of the
transactions contemplated hereby and thereby do not and will not require the consent or approval of, or the giving of notice to, or the registration with, or the recording or filing of any documents with, or the taking of any other action in respect
of, (A) any trustee or other holder of any debt of the Company and (B) any Government Entity, other than (1) the filings and recordations referred to in Section 3(a)(v) and (2) filings, recordations, notices or other
ministerial actions pursuant to any routine recording, contractual or regulatory requirements applicable to it; 

(iv) this Agreement constitutes, and each other Transaction Document when executed and delivered by the Company will
constitute, the legal, valid and binding obligation of the Company, enforceable against it in accordance with its terms, except as the same may be limited by applicable bankruptcy, insolvency, reorganization, moratorium or similar laws affecting the
rights of creditors generally and by general principles of equity, whether considered in a proceeding at law or in equity; 
 (v) except for the filing for recordation (and the recordation) of the Indenture Amendments under the Act and the filing of continuation statements to continue effectiveness of the “Financing
Statements” (as defined in each Trust Indenture), no further action, including any filing or recording of any document (including any financing statement in respect thereof under Article 9 of the UCC (as defined in the Trust Indentures)) or any
registration of any interest with the International Registry (as defined in the Trust Indentures) is necessary in order to establish and perfect the Indenture Trustee’s security interest in each Aircraft or the Indenture Trustee’s
International Interest (as defined in the Trust Indentures) in each Airframe and Engine as against the Company and any other Person, in each case, in any applicable jurisdictions in the United States; 

(vi) the Company is a U.S. Air Carrier (as defined in the Trust Indentures) and holds all licenses, permits and franchises
from the appropriate Government Entities necessary to authorize the Company to lawfully engage in air transportation and to carry on scheduled commercial passenger service as currently conducted, except where the failure to so hold any such license,
permit or franchise would not give rise to a Material Adverse Change (as defined in the Trust Indentures) to the Company; 

 (vi) the Company is not an “investment company” or a company
controlled by an “investment company” within the meaning of the Investment Company Act of 1940, as amended; 
 (vii) neither the Company nor any person authorized to act on its behalf has directly or indirectly offered any beneficial interest or Security (as defined in the Trust Indentures) relating to the
ownership of the Aircraft, or any of the Equipment Notes or any other interest in or security under the Trust Indentures, for sale to, or solicited any offer to acquire any such interest or security from, or has sold any such interest or security
to, any person in violation of the Securities Act of 1933, as amended; and 
 (viii) the Indenture Trustee is
entitled to the benefits of Section 1110 (as currently in effect) with respect to the right to take possession of each Aircraft and to enforce any of its other rights or remedies as provided in the Trust Indentures in the event of a case under
chapter 11 of the Bankruptcy Code in which the Company is a debtor. 
 (b) WTC represents and warrants that: 

(i) WTC is duly incorporated, validly existing and in good standing under the laws of the State of Delaware and is a
“citizen of the United States” as defined in Section 40102(a)(15) of the Act, and has the full corporate power, authority and legal right under the laws of the State of Delaware and the United States pertaining to its banking, trust
and fiduciary powers to execute and deliver this Agreement and each Transaction Document to which it will be a party and to carry out the obligations of WTC, in its capacity as Subordination Agent, Pass Through Trustee or Indenture Trustee, as the
case may be, under this Agreement and each Transaction Document to which it will be a party; 
 (ii) the
execution and delivery by WTC, in its capacity as Subordination Agent, Pass Through Trustee or Indenture Trustee, as the case may be, of this Agreement and each other Transaction Document and the performance by WTC, in its capacity as Subordination
Agent, Pass Through Trustee or Indenture Trustee, as the case may be, of its obligations under this Agreement and each other Transaction Document have been duly authorized by WTC, in its capacity as Subordination Agent, Pass Through Trustee or
Indenture Trustee, as the case may be, and will not violate its articles of association or by-laws or the provisions of any indenture, mortgage, contract or other agreement to which it is a party or by which it is bound; and 

(iii) this Agreement constitutes, and each other Transaction Document when executed and delivered by WTC will constitute,
the legal, valid and binding obligations of WTC, in its capacity as Subordination Agent, Pass Through Trustee or Indenture Trustee, as the case may be, enforceable against it in accordance with its terms, except as the same may be limited by
applicable bankruptcy, insolvency, reorganization, moratorium or similar laws affecting the rights of creditors generally and by general principles of equity, whether considered in a proceeding at law or in equity. 

 (c) The Class C Pass Through Trustee hereby confirms to each of the other parties hereto
that its representations and warranties set forth in Section 7.15 of the Basic Pass Through Trust Agreement and Section 5.03 of the Trust Supplement are true and correct as of the date hereof. 

(d) The Subordination Agent represents and warrants that: 

(i) the Subordination Agent is duly incorporated, validly existing and in good standing under the laws of the State of
Delaware, and has the full corporate power, authority and legal right under the laws of the State of Delaware and the United States pertaining to its banking, trust and fiduciary powers to execute and deliver this Agreement and each other
Transaction Document to which it is or will be a party and to perform its obligations under this Agreement and each other Transaction Document to which it is or will be a party; 

(ii) this Agreement has been duly authorized, executed and delivered by the Subordination Agent; this Agreement
constitutes, and each other Transaction Document to which it will be a party will constitute, the legal, valid and binding obligations of the Subordination Agent enforceable against it in accordance with its terms, except as the same may be limited
by applicable bankruptcy, insolvency, reorganization, moratorium or similar laws affecting the rights of creditors generally and by general principles of equity, whether considered in a proceeding at law or in equity; 

(iii) none of the execution, delivery and performance by the Subordination Agent of this Agreement or any other
Transaction Document to which it will be a party contravenes any law, rule or regulation of the State of Delaware or any United States governmental authority or agency regulating the Subordination Agent’s banking, trust or fiduciary powers or
any judgment or order applicable to or binding on the Subordination Agent and do not contravene the Subordination Agent’s articles of association or by-laws or result in any breach of, or constitute a default under, any agreement or instrument
to which the Subordination Agent is a party or by which it or any of its properties may be bound; 
 (iv) neither
the execution and delivery by the Subordination Agent of this Agreement or any other Transaction Document to which it will be a party nor the consummation by the Subordination Agent of any of the transactions contemplated hereby or thereby requires
the consent or approval of, the giving of notice to, the registration with, or the taking of any other action with respect to, any Delaware governmental authority or agency or any federal governmental authority or agency regulating the Subordination
Agent’s banking, trust or fiduciary powers; 

 (v) there are no Taxes payable by the Subordination Agent imposed by the
State of Delaware or any political subdivision or taxing authority thereof in connection with the execution, delivery and performance by the Subordination Agent of this Agreement or any other Transaction Document to which it will be a party (other
than franchise or other taxes based on or measured by any fees or compensation received by the Subordination Agent for services rendered in connection with the transactions contemplated by the Intercreditor Agreement), and there are no Taxes payable
by the Subordination Agent imposed by the State of Delaware or any political subdivision thereof in connection with the acquisition, possession or ownership by the Subordination Agent of any of the Series C Equipment Notes (other than franchise or
other taxes based on or measured by any fees or compensation received by the Subordination Agent for services rendered in connection with the transactions contemplated by the Intercreditor Agreement); and 

(vi) there are no pending or threatened actions or proceedings against the Subordination Agent before any court or
administrative agency which individually or in the aggregate, if determined adversely to it, would materially adversely affect the ability of the Subordination Agent to perform its obligations under this Agreement or any other Transaction Document
to which it will be a party. 
 (e) Each of the Class A Pass Through Trustee and the Class B Pass Through Trustee
represents and warrants that: 
 (i) it is duly incorporated, validly existing and in good standing under the
laws of the State of Delaware and has the full corporate power, authority and legal right under the laws of the State of Delaware and the United States pertaining to its banking, trust and fiduciary powers to execute and deliver this Agreement and
each other Transaction Document to which it is a party and to carry out its obligations under this Agreement and each other Transaction Document to which it will be a party; 

(ii) the execution and delivery by it of this Agreement and each of the other Transaction Documents to which it will be a
party and the performance by it of its obligations hereunder and thereunder have been duly authorized by it and will not violate its articles of association or by-laws or the provisions of any indenture, mortgage, contract or other agreement to
which it is a party or by which it is bound; and 
 (iii) this Agreement constitutes, and each of the other
Transaction Documents to which it will be a party will constitute, the legal, valid and binding obligations of it enforceable against it in accordance with its terms, except as the same may be limited by applicable bankruptcy, insolvency,
reorganization, moratorium or similar laws affecting the rights of creditors generally and by general principles of equity, whether considered in a proceeding at law or in equity. 

 (f) The Indenture Trustee represents and warrants that: 

(i) it is duly incorporated, validly existing and in good standing under the laws of the State of Delaware and has the
full corporate power, authority and legal right under the laws of the State of Delaware and the United States pertaining to its banking, trust and fiduciary powers to execute and deliver this Agreement and each other Transaction Document to which it
is a party and to carry out its obligations under this Agreement and each other Transaction Document to which it will be a party; 
 (ii) the execution and delivery by it of this Agreement and each of the other Transaction Documents to which it will be a party and the performance by it of its obligations hereunder and thereunder have
been duly authorized by it and will not violate its articles of association or by-laws or the provisions of any indenture, mortgage, contract or other agreement to which it is a party or by which it is bound; and 

(iii) this Agreement constitutes, and each of the other Transaction Documents to which it will be a party will constitute,
the legal, valid and binding obligations of it enforceable against it in accordance with its terms, except as the same may be limited by applicable bankruptcy, insolvency, reorganization, moratorium or similar laws affecting the rights of creditors
generally and by general principles of equity, whether considered in a proceeding at law or in equity. 
 (g) The Escrow Agent
represents and warrants that: 
 (i) the Escrow Agent is a national banking association duly incorporated,
validly existing and in good standing under the laws of the United States and has the full corporate power, authority and legal right under the laws of the United States pertaining to its banking, trust and fiduciary powers to execute and deliver
this Agreement, each Deposit Agreement and each Escrow and Paying Agent Agreement (collectively, the “Escrow Agent Agreements”) and to carry out the obligations of the Escrow Agent under each of the Escrow Agent Agreements;

 (ii) the execution and delivery by the Escrow Agent of each of the Escrow Agent Agreements and the performance
by the Escrow Agent of its obligations hereunder and thereunder have been duly authorized by the Escrow Agent and will not violate its articles of association or by-laws or the provisions of any indenture, mortgage, contract or other agreement to
which it is a party or by which it is bound; and 
 (iii) each of the Escrow Agent Agreements constitutes the
legal, valid and binding obligations of the Escrow Agent enforceable against it in accordance with its terms, except as the same may be limited by applicable bankruptcy, insolvency, reorganization, moratorium or similar laws affecting the rights of
creditors generally and by general principles of equity, whether considered in a proceeding at law or in equity. 

 (h) The Paying Agent represents and warrants that: 

(i) the Paying Agent is duly incorporated, validly existing and in good standing under the laws of the State of Delaware
and has the full corporate power, authority and legal right under the laws of the State of Delaware and the United States pertaining to its trust and fiduciary powers to execute and deliver this Agreement and each Escrow and Paying Agent Agreement
(collectively, the “Paying Agent Agreements”) and to carry out the obligations of the Paying Agent under each of the Paying Agent Agreements; 
 (ii) the execution and delivery by the Paying Agent of each of the Paying Agent Agreements and the performance by the Paying Agent of its obligations hereunder and thereunder have been duly authorized by
the Paying Agent and will not violate its articles of association or by-laws or the provisions of any indenture, mortgage, contract or other agreement to which it is a party or by which it is bound; and 

(iii) each of the Paying Agent Agreements constitutes the legal, valid and binding obligations of the Paying Agent
enforceable against it in accordance with its terms, except as the same may be limited by applicable bankruptcy, insolvency, reorganization, moratorium or similar laws affecting the rights of creditors generally and by general principles of equity,
whether considered in a proceeding at law or in equity. 
 SECTION 4. Covenants. (a) The Company covenants with each
of the other parties hereto that: 
 (i) subject to Section 4(a)(iii) of this Agreement, the Company shall at all times
maintain its corporate existence and shall not wind up, liquidate or dissolve or take any action, or fail to take any action, that would have the effect of any of the foregoing; 

(ii) the Company shall at all times remain a U.S. Air Carrier (as defined in the Trust Indentures) and shall at all times be otherwise
certificated and registered to the extent necessary to entitle the Indenture Trustee to the rights afforded to secured parties of aircraft equipment under Section 1110; 
 (iii) Section 4.07 of each Trust Indenture is hereby incorporated by reference herein; 
 (iv) promptly upon the recordation of the Indenture Amendments pursuant to the Act, the Company shall cause Daugherty, Fowler, Peregrin, Haught & Jenson, special counsel in Oklahoma City,
Oklahoma, to deliver to the Company, the Pass Through Trustees and the Indenture Trustee with respect to each Trust Indenture a favorable opinion or opinions addressed to each of them with respect to such recordation; and 

 (v) the Company shall not redeem and re-issue any Series B Equipment Notes or Series C
Equipment Notes, unless it shall have obtained written confirmation from each Rating Agency that the reissuance of such Equipment Notes, as the case may be, will not result in (1) a reduction of the rating for any Class of Certificates then
rated by any Rating Agency that will remain outstanding below the then current rating for such Class of Certificates or (2) a withdrawal or suspension of the rating of any Class of Certificates then rated by any Rating Agency that will remain
outstanding. Any redemption or reissuance of the Series B Equipment Notes or Series C Equipment Notes shall be subject to the terms of Section 9.1(c) of the Intercreditor Agreement. 

(vi) if (x) the Depositary’s short-term unsecured debt rating from Moody’s Investors Service, Inc. shall at any time fall
below P-1 or its long-term credit rating from either Standard & Poor’s Ratings Services or Fitch Ratings Ltd. shall at any time fall below A- (such minimum ratings, the “Depositary Threshold Ratings”) or any such
rating shall have been withdrawn or suspended or (y) the Company or the Depositary, in its sole discretion, gives written notice to the other of its election that the Depositary be replaced, the Company shall, within 30 days after such event
occurring, cause the Depositary to be replaced with a depositary bank (a “Replacement Depositary”) on the following terms and preconditions: 
 (A) the Replacement Depositary must meet the Depositary Threshold Ratings and the Company shall have obtained written confirmation from each Rating Agency that such replacement will not cause a reduction
of any rating then in effect for any Class of Certificates by such Rating Agency (without regard to any downgrading of any rating of the Depositary being replaced); 
 (B) the Company shall pay all fees, expenses and other amounts then owing to the replaced Depositary and, except as expressly provided in clause (C) below, the Company shall pay any up-front fee of
the Replacement Depositary and (without limitation of the foregoing) all out-of-pocket expenses (including reasonable fees and expenses of legal counsel) of the parties hereto (including without limitation all amounts payable to the Rating Agencies)
incurred in connection with such replacement; 
 (C) solely in the case of the Depositary making an election in its discretion
that it be replaced (and without limitation of clause (A) above), (x) the notice given by the Depositary to the Company shall nominate a Replacement Depositary, which shall satisfy all of terms and preconditions of this
Section 4(a)(vi) (and the Company shall have the right to utilize such nominee as the Replacement Depositary or to select another Replacement Depositary), (y) the fees, expenses, indemnities and other amounts payable to the Replacement
Depositary upon its execution of the Replacement Deposit Agreement or thereafter shall not to any extent exceed those which would have been payable to the Depositary had such replacement not occurred (it being specifically understood and agreed that
any up-front fee of the Replacement Depositary shall be paid by the replaced Depositary, provided that, if the Company selects a Replacement Depositary other than the nominee of the replaced Depositary and the upfront fee of such selection
exceeds that of such nominee, the Company shall pay such excess), and (without limitation of the foregoing) the Depositary shall pay all out-of-pocket expenses (including reasonable fees and expenses of legal counsel) of the parties hereto
(including without limitation all amounts payable to the Rating Agencies) incurred in connection with such 

 
replacement, and (z) the Replacement Depositary shall be willing to enter into a Replacement Deposit Agreement for the Class C Certificates with the Escrow Agent having the same terms and
conditions (including without limitation as to the interest to be paid on the Deposits) as the Deposit Agreements to which the Depositary is a party; and 
 (D) the Company or, in the case of the Depositary making an election that it be replaced (unless the Company shall have selected such Replacement Depositary), the Depositary, shall cause the Replacement
Depositary to enter into a Replacement Deposit Agreement for the Class C Certificates with the Escrow Agent (and, upon request of the Company the Escrow Agent agrees to enter into any such Replacement Deposit Agreement) and shall cause the
Replacement Depositary to deliver to the Company and each Rating Agency legal opinions and other closing documentation substantially similar in scope and substance as those that were delivered by the Depositary being replaced in connection with the
execution and delivery of the Deposit Agreement being replaced. 
 Upon satisfaction of the foregoing conditions, the Company
shall instruct the Class C Pass Through Trustee, and each such Pass Through Trustee agrees, to execute and deliver to the Escrow Agent a duly completed Withdrawal Certificate (as defined in the Escrow and Paying Agent Agreements) together with a
Notice of Replacement Withdrawal (as defined in the Escrow and Paying Agent Agreements). 
 Each of the parties hereto agrees,
at the Company’s request, to enter into any amendments to this Agreement, the Escrow and Paying Agent Agreements and any other Operative Agreements as may be necessary or desirable to give effect to the replacement of the Depositary with the
Replacement Depositary and the replacement of the Deposit Agreements with the Replacement Deposit Agreements. 
 Upon the
execution and delivery of the Replacement Deposit Agreements, the Replacement Depositary shall be deemed to be the Depositary with all of the rights and obligations of the Depositary hereunder and under the other Operative Agreements and the
Replacement Deposit Agreements shall be deemed to be the Deposit Agreements hereunder and under the other Operative Agreements, except that the obligations of the replaced Depositary under its Deposit Agreements resulting from the delivery of any
Withdrawal Notice delivered thereunder shall remain in full force and effect notwithstanding the execution and delivery of the Replacement Deposit Agreements. 
 (vii) Promptly after the occurrence of a Triggering Event or an Indenture Default resulting from the failure of the Company to make payments on any Equipment Note and on every Regular Distribution Date
while the Triggering Event or such Indenture Default shall be continuing, the Company will, at the Subordination Agent’s request from time to time but in any event no more frequently than once every three months, provide to the Subordination
Agent a statement setting forth the following information with respect to each Aircraft then subject to the lien of a Trust Indenture: (A) whether the Aircraft are currently in service or parked in storage, (B) the maintenance status of
the Aircraft and (C) the location of the Engines (as defined in the respective Trust Indentures to which such Aircraft are subject). As used in this sentence, the terms “Triggering Event”, “Indenture Default”, “Regular
Distribution Date” shall have the respective meanings set forth in the Intercreditor Agreement as originally executed. 

 (b) WTC, in its individual capacity, covenants with each of the other parties to this
Agreement that it will, immediately upon obtaining knowledge of any facts that would cast doubt upon its continuing status as a “citizen of the United States” as defined in Section 40102(a)(15) of the Act and promptly upon public
disclosure of negotiations in respect of any transaction which would or might adversely affect such status, notify in writing all parties hereto of all relevant matters in connection therewith. Upon WTC giving any such notice, WTC shall, subject to
Section 9.01 of any Trust Indenture then entered into, resign as Indenture Trustee in respect of such Trust Indenture. 

SECTION 5. Notices. Unless otherwise specifically provided herein, all notices required or permitted by the terms of this
Agreement shall be in English and in writing, and any such notice shall become effective upon being delivered personally or, if promptly confirmed by mail, when dispatched by facsimile or other written telecommunication, addressed to such party
hereto at its address or facsimile number set forth below the signature of such party at the foot of this Agreement or to such other address or facsimile number as such party may hereafter specify by notice to the other parties. 

SECTION 6. [Intentionally Omitted]. 
 SECTION 7. Further Assurances. Each party hereto shall duly execute, acknowledge and deliver, or shall cause to be executed, acknowledged and delivered, all such further agreements, instruments,
certificates or documents, and shall do and cause to be done such further acts and things, in any case, as any other party hereto shall reasonably request in connection with its administration of, or to carry out more effectually the purposes of, or
to better assure and confirm unto it the rights and benefits to be provided under, this Agreement. 
 SECTION 8.
Miscellaneous. (a) Provided that the transactions contemplated hereby have been consummated, in whole or in part, and except as otherwise provided for herein, the representations, warranties and agreements herein of the Company, the
Subordination Agent, the Pass Through Trustees and the Indenture Trustee, and the Company’s, the Subordination Agent’s, the Pass Through Trustees’ and the Indenture Trustee’s obligations under any and all thereof, shall survive
the expiration or other termination of this Agreement and the other agreements referred to herein. 
 (b) This Agreement may be
executed in any number of counterparts (and each of the parties hereto shall not be required to execute the same counterpart). Each counterpart of this Agreement, including a signature page executed by each of the parties hereto, shall be an
original counterpart of this Agreement, but all of such counterparts together shall constitute one instrument. Neither this Agreement nor any of the terms hereof may be terminated, amended, supplemented, waived or modified orally, but only by an
instrument in writing signed by the party against which the enforcement of the termination, amendment, supplement, waiver or modification is sought. The index preceding this Agreement and the headings of the various Sections of this Agreement are
for convenience of reference only and shall not modify, define, expand or limit any of the terms or provisions hereof. The terms of this Agreement shall be binding upon, and shall inure to the benefit of, the Company and its successors and permitted
assigns, the Pass Through Trustee and its successors as Pass Through Trustee (and any additional trustee appointed) under any of the Pass Through Trust Agreements, the Subordination Agent and its successors as Subordination Agent under the
Intercreditor Agreement and the Indenture Trustee and its successors as Indenture Trustee under each Trust Indenture. 

 (c) This Agreement is not intended to, and shall not, provide any person not a party hereto
(other than the Underwriter) with any rights of any nature whatsoever against any of the parties hereto, and no person not a party hereto (other than the Underwriter) shall have any right, power or privilege in respect of, or have any benefit or
interest arising out of, this Agreement. 
 SECTION 9. Governing Law. THIS AGREEMENT SHALL BE GOVERNED BY, AND CONSTRUED
IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK. THIS AGREEMENT IS BEING DELIVERED IN THE STATE OF NEW YORK. 

 IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be duly executed by
their respective officers thereunto duly authorized as of the day and year first above written. 
  

			
	US AIRWAYS, INC.
		
	By	 	 /s/ Thomas T. Weir

	Name:	 	Thomas T. Weir
	Title:	 	Vice President and Treasurer
	Address:	 	111 West Rio Salado Parkway
		 	Tempe, Arizona 85281
		 	Attention: Treasurer
		 	Facsimile: (480) 693-5886

 
			
	WILMINGTON TRUST COMPANY,
	not in its individual capacity, except as otherwise provided herein, but solely as Pass Through Trustee, as Subordination Agent, as Indenture Trustee and Paying
Agent
		
	By	 	 /s/ Rita Marie Ritrovato

	Name:	 	Rita Marie Ritrovato
	Title:	 	Assistant Vice President
		
	Address:	 	1100 North Market Street
		 	Wilmington, Delaware 19890-1605
		 	Attention: Corporate Trust Administration
		 	Facsimile: (302) 636-4140
	
	WILMINGTON TRUST, NATIONAL ASSOCIATION, as Escrow Agent
		
	By	 	 /s/ Rita Marie Ritrovato

	Name:	 	Rita Marie Ritrovato
	Title:	 	Assistant Vice President
	Address:	 	1100 North Market Street
	Wilmington, Delaware 19890-1605
	Attention: Corporate Trust Administration
	Facsimile: (302) 636-4140

 SCHEDULE I to 
 Note Purchase Agreement 
 AIRCRAFT 

Part A 
  

											
	 Trust Indenture
	  	Aircraft
Type	  	Registration
Number	  	Manufacturer’s
Serial Number	  	Original Principal
Amount of Series
C Equipment
Notes	 
	 Trust Indenture and Security Agreement (MSN 5588), dated as of May 17, 2013, between US Airways, Inc., as Owner and
Wilmington Trust Company, as Indenture Trustee, as supplemented by the Trust Indenture and Security Agreement Supplement thereto, dated as of May 17, 2013.
	  	A321-211	  	N152UW	  	5588	  	$	6,495,000	  
	 Trust Indenture and Security Agreement (MSN 5594), dated as of May 15, 2013, between US Airways, Inc., as Owner and
Wilmington Trust Company, as Indenture Trustee, as supplemented by the Trust Indenture and Security Agreement Supplement thereto, dated as of May 15, 2013.
	  	A321-211	  	N153UW	  	5594	  	$	6,495,000	  
	 Trust Indenture and Security Agreement (MSN 1415), dated as of May 23, 2013, between US Airways, Inc., as Owner and
Wilmington Trust Company, as Indenture Trustee, as supplemented by the Trust Indenture and Security Agreement Supplement thereto, dated as of May 23, 2013.
	  	A330-243	  	N286AY	  	1415	  	$	13,558,000	  
	 Trust Indenture and Security Agreement (MSN 1417), dated as of May 30, 2013, between US Airways, Inc., as Owner and
Wilmington Trust Company, as Indenture Trustee, as supplemented by the Trust Indenture and Security Agreement Supplement thereto, dated as of May 30, 2013.
	  	A330-243	  	N287AY	  	1417	  	$	13,558,000	  

 Part B 
  

											
	 Scheduled Delivery Months
	  	Aircraft
Type	  	Registration
Number	  	Manufacturer’s
Serial Number	  	Original Principal
Amount of Series
C Equipment
Notes	 
	 June 2013
	  	A321-211	  	N154UW	  	5644	  	$	6,498,000	  
	 June 2013
	  	A321-211	  	N155UW	  	5659	  	$	6,498,000	  
	 July 2013
	  	A321-211	  	N156UW	  	5684	  	$	6,511,000	  
	 July 2013
	  	A321-211	  	N157UW	  	5696	  	$	6,511,000	  
	 August 2013
	  	A321-231	  	N567UW	  	5728	  	$	6,531,000	  
	 August 2013
	  	A330-243	  	N288AY	  	1441	  	$	13,649,000	  
	 October 2013
	  	A330-243	  	N289AY	  	1455	  	$	13,696,000	  

  
 2 

 ANNEX A to 
 Note Purchase Agreement 
 DEFINITIONS 

“Act” means 49 U.S.C. §§ 40101-46507. 
 “Aircraft” has the meaning set forth in the third recital to the Note Purchase Agreement. 
 “Aircraft Purchase Agreement” means that certain Amended and Restated Airbus A320 Family Purchase Agreement, dated as of October 2, 2007, as amended, between the Company and the
Manufacturer (including all exhibits thereto, together with all letter agreements entered into that by their terms constitute part of such Purchase Agreement). 
 “Applicable Pass Through Trustee” has the meaning provided in Section 1(b)(ii) of the Note Purchase Agreement. 
 “Bankruptcy Code” means the United States Bankruptcy Code, 11 U.S.C. §§ 101 et seq. 
 “Basic Pass Through Trust Agreement” means the Pass Through Trust Agreement, dated December 21, 2010, between the Company and Pass Through Trustee, as such agreement may be
supplemented, amended or modified, but does not include any Trust Supplement. 
 “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, Phoenix, Arizona, or Wilmington, Delaware. 
 “Certificates” means the Class A Certificates, Class B Certificates and Class C Certificates. 
 “Certificateholder” means the Person in whose name a Certificate is registered in the Register. 
 “Class” means the class of Certificates issued by each Pass Through Trust. 

“Class A Certificates” means Certificates issued by the Class A Pass Through Trust. 

“Class A Deposit Agreement” means the Deposit Agreement (Class A), dated December 13, 2012, between the Escrow Agent and the
Depositary. 
 “Class A Pass Through Trustee” has the meaning set forth in the fifth recital to the Note Purchase Agreement.

 “Class A/B Note Purchase Agreement” means the Note Purchase Agreement, dated December 13, 2012, as amended by Amendment
No. 1 dated as of June 6, 2013, among the Company, WTC as pass through trustee under the pass through trust agreements referred to therein, the Subordination Agent, the Indenture Trustee, the Escrow Agent and the Paying Agent. 

“Class B Certificates” means Certificates issued by the Class B Pass Through Trust. 

 “Class B Deposit Agreement” means the Deposit Agreement (Class B), dated December 13,
2012, between the Escrow Agent and the Depositary. 
 “Class B Pass Through Trustee” has the meaning set forth in the fifth
recital to the Note Purchase Agreement. 
 “Class C Certificates” means Certificates issued by the Class C Pass Through Trust.

 “Class C Deposit Agreement” has the meaning set forth in the eleventh recital to the Note Purchase Agreement. 

“Class C Pass Through Trust” means a grantor trust created to facilitate the issuance and sale of Class C Certificates in connection
with the issuance of Series C Equipment Notes. 
 “Class C Pass Through Trust Agreement” means a Trust Supplement entered into
in connection with the creation of the Class C Pass Through Trust, together with the Basic Pass Through Trust Agreement. 
 “Class C
Pass Through Trustee” means WTC, in its capacity as trustee under the Class C Pass Through Trust Agreement. 
 “Closing
Notice” has the meaning set forth in Section 1A(b) of the Note Purchase Agreement. 
 “Company” means US Airways,
Inc., a Delaware corporation. 
 “Cut-off Date” means the earlier of (a) the day after the Delivery Period Termination
Date and (b) the date on which a Triggering Event occurs. 
 “Delivery Date” means the Business Day on which an Aircraft
is delivered to and accepted by the Company. 
 “Delivery Period Termination Date” means the earlier of (a) December 2,
2013 and (b) the date on which Equipment Notes issued with respect to all of the Aircraft (including any Substitute Aircraft in lieu of any Eligible Aircraft) have been purchased by the Pass Through Trustees in accordance with the Note Purchase
Agreement. 
 “Deposits” has the meaning set forth in the eleventh recital to the Note Purchase Agreement. 

“Deposit Agreements” has the meaning set forth in the eleventh recital to the Note Purchase Agreement. 

“Depositary” means The Bank of New York Mellon. 
 “Depositary Threshold Ratings” has the meaning set forth in Section 4(a)(vi) of the Note Purchase Agreement. 
 “Equipment Notes” means and includes any equipment notes issued under any Trust Indenture in the form specified in Section 2.01 thereof (as such form may be varied pursuant to the
terms of 

  
 2 

 
such Trust Indenture) and any Equipment Note issued under any Trust Indenture in exchange for or replacement of any other Equipment Note. 
 “Escrow Agent” has the meaning set forth in the first paragraph of the Note Purchase Agreement. 
 “Escrow Agent Agreements” has the meaning set forth in Section 3(g)(i) of the Note Purchase Agreement. 
 “Escrow and Paying Agent Agreements” has the meaning set forth in the eleventh recital to the Note Purchase Agreement. 
 “FAA” means the Federal Aviation Administration of the United States. 

“Financing Agreements” means, collectively, the Participation Agreement, the Trust Indenture and the Equipment Notes issued thereunder.

 “Funding Date” has the meaning set forth in Section 1A(b)(i) of the Note Purchase Agreement. 

“Government Entity” means (a) any federal, state, provincial or similar government, and any body, board, department, commission,
court, tribunal, authority, agency or other instrumentality of any such government or otherwise exercising any executive, legislative, judicial, administrative or regulatory functions of such government or (b) any other government entity having
jurisdiction over any matter contemplated by the Operative Agreements or relating to the observance or performance of the obligations of any of the parties to the Operative Agreements. 
 “Guarantee” means the Guarantee dated as of December 13, 2012 from US Airways Group, Inc. 
 “Indenture Trustee” has the meaning set forth in the Financing Agreements. 

“Initial Deposits” has the meaning set forth in the eleventh recital to the Note Purchase Agreement. 

“Intercreditor Agreement” has the meaning set forth in the sixth recital to the Note Purchase Agreement. 

“Issuance Date” means the date of the original issuance of the Certificates. 
 “Law” means (a) any constitution, treaty, statute, law, decree, regulation, order, rule or directive of any Government Entity, and (b) any judicial or administrative
interpretation or application of, or decision under, any of the foregoing. 
 “Liquidity Facility” has the meaning set forth in
the tenth recital to the Note Purchase Agreement. 
 “Liquidity Provider” has the meaning set forth in the tenth recital to the
Note Purchase Agreement. 

  
 3 

 “Manufacturer” means Airbus S.A.S., a société par actions
simplifiée organized and existing under the laws of the Republic of France, solely in its capacity as manufacturer or seller of Eligible Aircraft. 
 “New Aircraft” has the meaning set forth in the fourth recital to the Note Purchase Agreement. 
 “Note Purchase Agreement” means the Note Purchase Agreement to which this Annex A is attached. 
 “Notice of Purchase Withdrawal” with respect to each Deposit Agreement, has the meaning set forth in Section 2.3 thereof. 
 “Operative Agreements” means, collectively, the Pass Through Trust Agreements, the Escrow and Paying Agent Agreements, the Deposit Agreements, the Liquidity Facilities, the Intercreditor
Agreement, the Equipment Notes, the Certificates and the Financing Agreements. 
 “Owned Aircraft” has the meaning set forth in
the fourth recital to the Note Purchase Agreement. 
 “Participation Agreement” means, the Participation Agreement
substantially in the form of Exhibit B to the Note Purchase Agreement. 
 “Paying Agent Agreements” has the meaning set
forth in Section 3(f)(i) of the Note Purchase Agreement. 
 “Pass Through Trust” has the meaning set forth in the fourth
recital to the Note Purchase Agreement. 
 “Pass Through Trust Agreement” means each of the two separate Trust Supplements
referred to in the fourth recital to the Note Purchase Agreement, together in each case with the Basic Pass Through Trust Agreement, each dated as of the Issuance Date, by and between the Company and Pass Through Trustee. 

“Pass Through Trustee” has the meaning set forth in the fourth paragraph of the Note Purchase Agreement. 

“Paying Agent” has the meaning set forth in the first paragraph of the Note Purchase Agreement. 

“Person” means any individual, firm, partnership, joint venture, trust, trustee, Government Entity, organization, association,
corporation, limited liability company, government agency, committee, department, authority and other body, corporate or incorporate, whether having distinct legal status or not, or any member of any of the same. 

“Rating Agencies” means, collectively, at any time, each nationally recognized rating agency which shall have been requested to rate the
Certificates and which shall then be rating the Certificates. The initial Rating Agencies will be Fitch Ratings Ltd., Moody’s Investors Service, Inc. and Standard & Poor’s Ratings Services, a Standard & Poor’s
Financial Services LLC business. 

  
 4 

 “Rating Agency Confirmation” means, with respect to (1) any Financing Agreement or
(2) a Substitute Aircraft, that has been modified in any material respect from the forms thereof attached to the Note Purchase Agreement, a written confirmation from each of the Rating Agencies that (1) the use of such Financing Agreement
with such modifications or (2) the substituting of such Substitute Aircraft for a then current Eligible Aircraft, whichever of the foregoing shall in a particular case require Rating Agency Confirmation, would not result in (i) a reduction
of the rating for any Class of Certificates then rated by the Rating Agencies below the then current rating for such Class of Certificates or (ii) a withdrawal or suspension of the rating of any Class of Certificates then rated by the Rating
Agencies. 
 “Register” means the register maintained pursuant to Sections 3.04 and 7.12 of the Basic Pass Through Trust
Agreement with respect to each Pass Through Trust. 
 “Replacement Deposit Agreement” means, for each Class of Certificates, a
deposit agreement substantially in the form of the replaced Deposit Agreement for such Class of Certificates as shall permit the Rating Agencies to confirm in writing their respective ratings then in effect for such Class of Certificates (before the
downgrading of such ratings, if any, as a result of the downgrading of the Depositary, if applicable). 
 “Replacement
Depositary” has the meaning set forth in Section 4(a)(vi) of the Note Purchase Agreement. 
 “Required Terms”
means the terms set forth on Schedule III to the Note Purchase Agreement. 
 “Scheduled Closing Date” has the meaning set forth
in Section 1(b) of the Note Purchase Agreement. 
 “Section 1110” means 11 U.S.C. § 1110 of the Bankruptcy Code or
any successor or analogous Section of the federal bankruptcy Law in effect from time to time. 
 “Series A Equipment Notes”
means the “Series A Equipment Notes” as defined in each Trust Indenture entered into pursuant to the Note Purchase Agreement. 

“Series B Equipment Notes” means the “Series B Equipment Notes” as defined in each Trust Indenture entered into pursuant to
the Note Purchase Agreement. 
 “Series C Equipment Notes” means the “Series C Equipment Notes” as defined in each
Trust Indenture entered into pursuant to the Note Purchase Agreement. 
 “Subordination Agent” has the meaning set forth in the
first paragraph of the Note Purchase Agreement. 
 “Substitute Aircraft” has the meaning set forth in Section 1(g) of the
Note Purchase Agreement. 
 “Taxes” means all license, recording, documentary, registration and other similar fees and all
taxes, levies, imposts, duties, charges, assessments or withholdings of any nature whatsoever imposed by any Taxing Authority, together with any penalties, additions to tax, fines or interest thereon or additions thereto. 

  
 5 

 “Taxing Authority” means any federal, state or local government or other taxing authority
in the United States, any foreign government or any political subdivision or taxing authority thereof, any international taxing authority or any territory or possession of the United States or any taxing authority thereof. 

“Triggering Event” has the meaning assigned to such term in the Intercreditor Agreement. 

“Trust Indenture” means the Trust Indenture and Security Agreement substantially in the form of Exhibit C to the Note Purchase
Agreement. 
 “Trust Supplement” means an agreement supplemental to the Basic Pass Through Trust Agreement pursuant to which
(i) a separate trust is created for the benefit of the holders of the pass through certificates of a class, (ii) the issuance of the pass through certificates of such class representing fractional undivided interests in such trust is
authorized and (iii) the terms of the pass through certificates of such class are established. 
 “Underwriters” has the
meaning set forth in the seventh recital to the Note Purchase Agreement. 
 “Underwriting Agreement” has the meaning set forth
in the seventh recital to the Note Purchase Agreement. 
 “WTC” has the meaning set forth in the first paragraph of the Note
Purchase Agreement. 

  
 6 

 EXHIBIT A to 
 Note Purchase Agreement 
 FORM OF PARTICIPATION AGREEMENT AMENDMENT

 EXHIBIT B to 
 Note Purchase Agreement 
 FORM OF INDENTURE AMENDMENT 

 EXHIBIT C to 
 Note Purchase Agreement 
 FORM OF INTERCREDITOR AMENDMENT 

 EXHIBIT D to 
 Note Purchase Agreement 
 FORM OF OPINION OF LATHAM & WATKINS LLP

 EXHIBIT E to 
 Note Purchase Agreement 
 FORM OF OPINION OF SQUIRE, SANDERS &
DEMPSEY, L.L.P. 

 EXHIBIT F-1 to 
 Note Purchase Agreement 
 FORM OF OPINION OF MORRIS JAMES LLP 

 EXHIBIT F-2 to 
 Note Purchase Agreement 
 FORM OF OPINION OF MORRIS JAMES LLP 

 EXHIBIT G to 
 Note Purchase Agreement 
 FORM OF OPINION OF DAUGHERTY, FOWLER, PEREGRIN,
HAUGHT & JENSON

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