Exhibit 4.15




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




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Exhibit A            Escrow ReceiptExhibit B            Withdrawal Certificate




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Agreement Escrow Agent Underwriters Investors Pass Through
Trustee Paying Agent
 W I T N E S S E T H
 US Airways Trust Supplement Pass Through Trust
Agreement Pass Through
Trust Certificates Issuance Date
 Underwriting Agreement
 Note Purchase Agreement Equipment Notes Net Proceeds
 Depositary




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Deposit Agreement
    Escrow Agent
 Appointment of Escrow Agent
 2




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Instruction; Etc
   Withdrawal Certificate Applicable Notice of Purchase
Withdrawal Purchase Withdrawal provided
  Replacement Withdrawal
Date
  Termination Date th Final Withdrawal provided
 3




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Final Withdrawal
Date
  Initial Escrow Amount; Issuance of Escrow Receipts Dollars Escrow Receipt Escrow Interest Register Final Distribution
 Payments to Receiptholders Receiptholders Account
Amounts
 Mutilated, Destroyed, Lost or Stolen Escrow Receipt
 4




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5




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Additional Escrow Amounts
 Resignation or Removal of Escrow Agent Action of Investors
 Persons Deemed Owners
 Further Assurances
 Paying Agent
 Appointment of Paying Agent
 6




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Establishment of Paying Agent Account Paying Agent Account
 Payments from Paying Agent Account
 DTC
   7




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Withholding Taxes
 Resignation or Removal of Paying Agent
 Notice of Final Withdrawal
  8




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Payments
 Other Actions
 Representations and Warranties of the Escrow Agent
    9




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Representations and Warranties of the Paying Agent
 10




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11




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Indemnification
 Amendment, Etc provided
 provided
   Notices
 12




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Transfer Transfer Assignment and Assumption
Agreement Successor Trust
 Entire Agreement
 Governing Law
 Waiver of Jury Trial Right .
 13




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Counterparts
 Rights of Holders
 14




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WELLS FARGO BANK NORTHWEST, NATIONAL ASSOCIATION,
as Escrow AgentBy
    /s/ Scott RosevearName:
    Scott RosevearTitle:
    Vice PresidentGOLDMAN, SACHS & CO., CITIGROUP 
GLOBAL MARKETS INC. and
CREDIT SUISSE SECURITIES (USA) LLC,
as representatives of the several Underwriters
GOLDMAN, SACHS & CO.By
    /s/ Goldman, Sachs & Co.(Goldman, Sachs & Co.)CITIGROUP GLOBAL MARKETS INC.By
    /s/ Thomas BliemelName:
    Thomas BliemelTitle:
    Managing DirectorCREDIT SUISSE SECURITIES (USA) LLCBy
    /s/ Thomas L. SmithName:
    Thomas L. SmithTitle:
    Managing Director




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WILMINGTON TRUST COMPANY, not in its 
individual capacity, but solely as Pass Through 
Trustee for and on behalf of US Airways Pass 
Through Trust 2011-1B-OBy
    /s/ Adam VogelsongName:
    Adam VogelsongTitle:
    Senior Financial Services OfficerWILMINGTON TRUST COMPANY,
  as Paying AgentBy
    /s/ Adam VogelsongName:
    Adam VogelsongTitle:
    Senior Financial Services Officer




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Account
Amounts Paying Agent Account Escrow and Paying Agent Agreement Escrow Agent Pass Through Trustee Paying Agent




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2




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WELLS FARGO BANK NORTHWEST, NATIONAL ASSOCIATION,
  as Escrow AgentByName:Title: 3




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Very truly yours,
WILMINGTON TRUST COMPANY,
not in its individual capacity but
solely as Pass Through TrusteeByName:Title: