FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person * Makaira Partners LLC   2. Issuer Name and Ticker or Trading Symbol Wesco Aircraft Holdings, Inc [WAIR] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director __X__ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 7776 IVANHOE AVENUE #250 3. Date of Earliest Transaction (Month/Day/Year) 08/16/2017 (Street) LA JOLLA, CA 92037 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 08/16/2017   P   61,321 A $ 7.8467 (1) 9,941,177 D   Common Stock 08/17/2017   P   600 A $ 7.75 9,941,777 D   Common Stock 08/18/2017   P   9,907 A $ 7.69 (2) 9,951,684 D   Common Stock 08/21/2017   P   51,239 A $ 7.7941 (3) 10,002,923 D   Common Stock               78,120 I See footnote (4)

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Makaira Partners LLC 7776 IVANHOE AVENUE #250 LA JOLLA, CA 92037		X

Signatures

/s/ Sean Hidey, Chief Operating Officer and Chief Compliance Officer		08/21/2017
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	The price reported is a weighted average price. These shares were purchased in multiple transactions at per share prices ranging from $7.80 to $7.85. The Reporting Person undertakes to provide the Company, any security holder of the Company or the staff of the SEC, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.
(2)	The price reported is a weighted average price. These shares were purchased in multiple transactions at per share prices ranging from $7.65 to $7.75. The Reporting Person undertakes to provide the Company, any security holder of the Company or the staff of the SEC, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.
(3)	The price reported is a weighted average price. These shares were purchased in multiple transactions at per share prices ranging from $7.75 to $7.80. The Reporting Person undertakes to provide the Company, any security holder of the Company or the staff of the SEC, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.
(4)	By Thomas Bancroft. Mr. Bancroft is the Managing Member, Portfolio Manager and Chief Investment Officer of the Reporting Person. The 78,120 shares of Common Stock beneficially owned by Mr. Bancroft are included in this Form 4 for disclosure purposes, but the Reporting Person disclaims beneficial ownership of such shares and disclaims membership in a group with Mr. Bancroft.

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