UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Notice of Effectiveness
Effectiveness Date:	August 17, 2011 3:00 P.M.

Form:	S-4
CIK: 0001260221 Company Name: TransDigm Group INC File Number: 333-174781
CIK: 0001077670 Company Name: TRANSDIGM INC File Number: 333-174781-26
CIK: 0001077673 Company Name: MarathonNorco Aerospace, Inc. File Number: 333-174781-25
CIK: 0001377127 Company Name: Skurka Aerospace Inc. File Number: 333-174781-24
CIK: 0001084402 Company Name: ADAMS RITE AEROSPACE INC File Number: 333-174781-23
CIK: 0001377125 Company Name: Avionic Instruments LLC File Number: 333-174781-22
CIK: 0001378716 Company Name: CDA INTERCORP LLC File Number: 333-174781-21
CIK: 0001403204 Company Name: Aviation Technologies, Inc. File Number: 333-174781-20
CIK: 0001403202 Company Name: Transicoil LLC File Number: 333-174781-19
CIK: 0001404922 Company Name: AeroControlex Group, Inc. File Number: 333-174781-18
CIK: 0000714124 Company Name: AVTECH CORP File Number: 333-174781-17
CIK: 0001403770 Company Name: Malaysian Aerospace Services, Inc. File Number: 333-174781-16
CIK: 0001486752 Company Name: ACME Aerospace, Inc. File Number: 333-174781-15
CIK: 0001486781 Company Name: Dukes Aerospace, Inc. File Number: 333-174781-14
CIK: 0001486784 Company Name: Bruce Aerospace, Inc. File Number: 333-174781-13
CIK: 0001486789 Company Name: Aircraft Parts Corp File Number: 333-174781-12
CIK: 0001486783 Company Name: CEF Industries, LLC File Number: 333-174781-11
CIK: 0001486857 Company Name: Bruce Industries, Inc. File Number: 333-174781-10
CIK: 0001518070 Company Name: Texas Rotronics, Inc. File Number: 333-174781-09
CIK: 0001518071 Company Name: Western Sky Industries, LLC File Number: 333-174781-08
CIK: 0001518069 Company Name: Semco Instruments, Inc. File Number: 333-174781-07
CIK: 0001518068 Company Name: McKechnie Aerospace US LLC File Number: 333-174781-06
CIK: 0001518067 Company Name: McKechnie Aerospace Investments, Inc. File Number: 333-174781-05
CIK: 0001518066 Company Name: McKechnie Aerospace Holdings, Inc. File Number: 333-174781-04
CIK: 0001518065 Company Name: McKechnie Aerospace DE, Inc. File Number: 333-174781-03
CIK: 0001142160 Company Name: CHAMPION AEROSPACE LLC File Number: 333-174781-02
CIK: 0001518064 Company Name: Hartwell Corp File Number: 333-174781-01