Ownership Submission
FORM 3
 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF 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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(Print or Type Responses)
1. Name and Address of Reporting Person *
  Makaira Partners LLC
 2. Date of Event Requiring Statement (Month/Day/Year)
08/16/2017		 3. Issuer Name and Ticker or Trading Symbol
Wesco Aircraft Holdings, Inc [WAIR]
(Last)
(First)
(Middle)
7776 IVANHOE AVENUE #250		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

LA JOLLA, CA 92037		 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 Beneficially Owned
1.Title of Security
(Instr. 4)		 2. Amount of Securities Beneficially Owned
(Instr. 4)		 3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)		 4. Nature of Indirect Beneficial Ownership
(Instr. 5)
Common Stock 9,879,856 (1)
D
 
Common Stock 78,120
I
See footnote (2)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)		 2. Date Exercisable and Expiration Date
(Month/Day/Year)		 3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)		 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)		 6. Nature of Indirect Beneficial Ownership
(Instr. 5)
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 5(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) Excludes shares acquired after Thomas Bancroft and Makaira Partners, LLC collectively beneficially acquired greater than 10% of outstanding shares of Common Stock of the Issuer.
(2) By Thomas Bancroft. Mr. Bancroft is the Managing Member, Portfolio Manager and Chief Investment Officer of Makaira Partners, LLC. The 78,120 shares of Common Stock beneficially owned by Mr. Bancroft are included in this Form 3 for disclosure purposes, but Makaira Partners, LLC disclaims beneficial ownership of such shares and disclaims membership in a group with Mr. Bancroft.

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