Exhibit 10.52(d)
CONFIDENTIAL TREATMENT
REQUESTED PURSUANT TO RULE 24b-2
 
Certain portions of this exhibit have been omitted pursuant to a request for
confidential treatment under Rule 24b-2 of the Securities exchange Act of 1934.
The omitted materials have been filed separately with the Securities and
Exchange Commission.

THIRD AMENDMENT TO
REPUBLIC JET SERVICE AGREEMENT
BETWEEN
US AIRWAYS, INC.
AND
REPUBLIC AIRLINE, INC.

This Third Amendment (this “Third Amendment”) to the Republic Jet Service
Agreement between US Airways, Inc. (“US Airways”) and Republic Airlines, Inc.
(“Republic”) dated as of September 2, 2005, as the same has been amended (the
“Agreement”) is made and entered into as of this 19th day of December, 2006 (the
“Effective Date”).

WHEREAS, US Airways and Republic have entered into the Agreement; and

WHEREAS, US Airways and Republic wish to amend certain provisions of the
Agreement on the terms and conditions set forth herein; and

NOW THEREFORE, for and in consideration of the foregoing premises and the mutual
covenants and obligations hereinafter set forth, and for other good and valuable
consideration, the receipt and sufficiency of which is acknowledged, US Airways
and Republic hereby agree as follows:
 
    1. Certain Definitions. All capitalized terms used but not defined herein
shall have the meanings set forth in the Agreement. In addition, the following
terms shall have the meanings set forth below:

“Swapped Aircraft” - shall mean up to [*] ex-MidAtlantic Embraer 170 aircraft as
designated on Annex A which shall be removed from Republic’s fleet, to be
replaced with an equal number of Embraer 175 aircraft (defined below).

“EMB 175s” - shall mean up to [*] Embraer [*] single class 175 aircraft as
designated on Annex A. Upon any EMB 175 being made available for service under
the Agreement pursuant to Section 2, it shall be deemed included in the
definition of “Aircraft” set forth in Section 2.1 of the Agreement.
 
    2. Swapping of Aircraft. The parties acknowledge and agree that any or all
of the Swapped Aircraft may be removed from service under the Agreement, one
aircraft at a time with at least [*] days prior notice, over an [*]month period,
beginning on the Effective Date. As any such Swapped Aircraft is so removed from
service under the Agreement, an EMB 175 will immediately be available for
service thereunder so there will be no service gaps. [*] payment of all other
sums will be due under Article 5 for each EMB 175 on the same basis as for the
New Aircraft and shall commence on the date each EMB 175 is first placed into
Service.

    3. Certain Provisions of the Republic Agreement. The following provisions of
the Republic Agreement, as amended, shall apply to the EMB 175s mutatis
mutandis: Article 1 (Compliance with Regulations); Article 2 (Air Transportation
Services to be Provided by Republic), excluding Section 2.14; Article 3
(Operation Under the “US Airways Express” Name); Article 4 (US Airways’ Support
Services and Facilities); Sections 5.1 through 5.7 of Article 5 (Purchase of
Available Seat Miles (“ASMs”); Article 6 (Liability, Indemnification and
Insurance); Article 7 (Term and Termination), including Section 7.1(b)(i);
Article 8 (Performance Adjustments); Article 9 (Service Marks License For
Services Provided Pursuant to this Agreement); Article 10 (Force Majeure);
Article 11 (Notices); Article 12 (Miscellaneous), Article 13 (Confidentiality);
Article 14 (Dispute Resolution); Exhibit 2.2 (Schedule Requirements); Exhibit
5.1 (Pricing Model) and Exhibit 5.1(a).

    4. [*]
 
[*]
 
    5. Conflict or Inconsistency. In the event of any conflict or inconsistency
between the terms and provisions contained in the Agreement and the terms and
provisions contained in this Third Amendment, the terms and provisions of this
Third Amendment shall govern and prevail to the extent necessary to resolve such
conflict or inconsistency. All other terms and provisions as set forth in the
Agreement, including but not limited to Section 2.10 “Jets for Jobs”, shall
remain in full force and effect and Republic will remain in compliance with all
such other terms and provisions. Upon its execution by the parties, this Third
Amendment together with the Agreement, will be the complete and binding
understanding of the parties with respect to the subject matter hereof.

    6. Counterparts; Facsimile. This Third Amendment may be executed
simultaneously in two or more counterparts, each of which shall be deemed an
original and all of which together shall constitute but one and the same
instrument. This Third Amendment may be transmitted by telefax copier and the
parties agree that their signature transmitted by telefax will constitute a duly
executed counterpart of the Third Amendment enforceable against the executing
party.

  (signature page follows)
 

 

____________
*Confidential

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IN WITNESS WHEREOF, US Airways and Republic have caused this Third Amendment to
be executed by their duly authorized representatives on the day and year first
above written.

REPUBLIC AIRLINE, INC.     US AIRWAYS, INC.         /s/ Bryan K. Bedford    
/s/ Scott Kirby

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Name: /Bryan Bedford
Title: President
    Name: Scott Kirby
Title: President

  

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 ANNEX A 

 [*]   [*]   [*]   [*]           [*]   [*]   [*]   [*]   [*]   [*]   [*]   [*] 
 [*]   [*]   [*]   [*]   [*]   [*]   [*]   [*]   [*]   [*]   [*]   [*]   [*] 
 [*]   [*]   [*]   [*]   [*]   [*]   [*]   [*]   [*]   [*]   [*]   [*]   [*] 
 [*]   [*]   [*]   [*]   [*]   [*] 

[*] ____________
* Confidential

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