TransDigm (TDG) 10-K 2006 FY Annual report

Exhibit 3.12

State of Delaware

Secretary of State

Division of Corporations

Delivered 10:25 AM 08/28/2003

FILED 10:21 AM 08/28/2003

SRV 030559255 – 2389579 FILE

STATEof DELAWARE

CERTIFICATEofAMENDMENTof

CERTIFICATEof INCORPORATION

• First:That at a meeting of the Board of Directors of Marathon Power Technologies Company resolutions were duly adopted setting forth a proposed amendment of the Certificate of Incorporation of said corporation, declaring said amendment to be advisable and calling a meeting of the stockholders of said corporation for consideration thereof.

The resolution setting forth the proposed amendment is as follows:

Resolved, that the Certificate of Incorporation of this corporation be amended by changing the Article thereof numbered “FIRST” so that, as amended, said Article shall be and read as follows:

“FIRST: The name of the Corporation is MarathonNorco Aerospace, Inc.”

• Second: That thereafter, pursuant to resolution of its Board of Directors, a special meeting of the stockholders of said corporation was duly called and held, upon notice in accordance with Section 222 of the General Corporation Law of the State of Delaware at which meeting the necessary number of shares as required by statute were voted in favor of the amendment.

• Third:That said amendment was duly adopted in accordance with the provisions of Section 242 of the General Corporation Law of the State of Delaware.

• Fourth: That the capital of said corporation shall not be reduced under or by reason of said amendment.

• FIFTH: That the effective data of this filling shall be September 1, 2003.

BY:	/s/    ALBERT J. RODRIGUEZ
	(Authorized Officer)
NAME:	Albert J. Rodriguez
	(Type or Print)