SEC FORM 3 SEC Form 3
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
or Section 30(h) of the Investment Company Act of 1940
 
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1. Name and Address of Reporting Person*
Skulina James

(Last) (First) (Middle)
1301 EAST NINTH STREET
SUITE 3000

(Street)
CLEVELAND OH 44114

(City) (State) (Zip)
2. Date of Event Requiring Statement (Month/Day/Year)
01/01/2012
3. Issuer Name and Ticker or Trading Symbol
TransDigm Group INC [ TDG ]
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director 10% Owner
X Officer (give title below) Other (specify below)
Executive Vice President
5. If Amendment, Date of 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
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)
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: 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
Stock Option 07/22/2003 07/19/2012 Common Stock 71,458 3.35 D
Stock Option 08/05/2003 08/05/2013 Common Stock 59,840 6.68 D
Stock Option 09/30/2006 08/05/2013 Common Stock 239 13.37 D
Stock Option 09/28/2005 07/19/2012 Common Stock 4,966 13.37 D
Stock Option 10/01/2005 10/01/2015 Common Stock 11,968 13.37 D
Stock Option 08/05/2003 08/05/2013 Common Stock 14,960 6.68 D
Stock Option 09/30/2006 08/05/2013 Common Stock 60 13.37 D
Stock Option 09/28/2005 07/19/2012 Common Stock 1,242 13.37 D
Stock Option 10/01/2005 10/01/2015 Common Stock 2,992 13.37 D
Stock Option 09/30/2009 11/17/2018 Common Stock 35,000 27.08 D
Stock Option 09/30/2010 11/16/2019 Common Stock 10,000 41.79 D
Explanation of Responses:
Remarks:
/s/Halle Fine Terrion, as Attorney-in-Fact for James Skulina 01/06/2012
** Signature of Reporting Person Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
POWER OF ATTORNEY
Know all by these presents, that the undersigned hereby constitutes and appoints
each of Russell Russell Backus, Halle F. Terrion, Suzanne Hanselman and
Elizabeth Riotte signing singly, the undersigned's true and lawful
attorney-in-fact to:
1.	execute for and on behalf of the undersigned, in the undersigned's capacity
as an officer and/or director of TransDigm Group Incorporated, a Delaware
corporation (the "Company"), Form ID and Forms 3, 4 and 5 in accordance with
Section 16(a) of the Securities Exchange Act of 1934 and the rules thereunder;
and
2.	do and perform any and all acts for and on behalf of the undersigned which
may be necessary or desirable to complete and execute any such Form ID and Form
3, 4 or 5, complete and execute any amendment or amendments thereto, and timely
file such form with the United States Securities and Exchange Commission and any
stock exchange or similar authority.
The undersigned hereby grants to each such attorney-in-fact full power and
authority to do and perform any and every act and thing whatsoever requisite,
necessary, or proper to be done in the exercise of any of the rights and powers
herein granted, as fully to all intents and purposes as the undersigned might or
could do if personally present, with full power of substitution or revocation,
hereby ratifying and confirming all that such attorney-in-fact, or such
attorney-in-fact's substitute or substitutes, shall lawfully do or cause to be
done by virtue of this power of attorney and the rights and powers herein
granted.  The undersigned acknowledges that the foregoing attorneys-in-fact, in
serving in such capacity at the request of the undersigned, are not assuming,
nor is the Company assuming, any of the undersigned's responsibilities to comply
with Section 16 of the Securities Exchange Act of 1934.

This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Forms 3, 4 and 5 with respect to the
undersigned's holdings of and transactions in securities issued by the Company,
unless earlier revoked by the undersigned in a signed writing delivered to the
foregoing attorneys-in-fact.

IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be
executed as of the date set forth below.


/s/James Skulina
James Skulina

						Date: December 12, 2011