UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Notice of Effectiveness
Effectiveness Date:	May 24, 2017 2:00 P.M.

Form:	S-4
CIK: 0001260221 Company Name: TransDigm Group INC File Number: 333-217850
CIK: 0001518068 Company Name: McKechnie Aerospace US LLC File Number: 333-217850-59
CIK: 0001518065 Company Name: McKechnie Aerospace DE, Inc. File Number: 333-217850-58
CIK: 0001518067 Company Name: McKechnie Aerospace Investments, Inc. File Number: 333-217850-57
CIK: 0001518070 Company Name: Texas Rotronics, Inc. File Number: 333-217850-56
CIK: 0001518071 Company Name: Electromech Technologies LLC File Number: 333-217850-55
CIK: 0001614964 Company Name: Airborne Systems North America of NJ Inc. File Number: 333-217850-54
CIK: 0001529278 Company Name: Schneller LLC File Number: 333-217850-53
CIK: 0001567701 Company Name: HARCO LLC File Number: 333-217850-52
CIK: 0001486752 Company Name: ACME Aerospace, Inc. File Number: 333-217850-51
CIK: 0001567706 Company Name: Bridport Holdings, Inc. File Number: 333-217850-50
CIK: 0001567717 Company Name: Bridport Erie Aviation, Inc. File Number: 333-217850-49
CIK: 0001567707 Company Name: AmSafe, Inc. File Number: 333-217850-48
CIK: 0001567722 Company Name: Bridport-Air Carrier, Inc. File Number: 333-217850-47
CIK: 0000007340 Company Name: ARKWIN INDUSTRIES INC File Number: 333-217850-46
CIK: 0001614930 Company Name: Aerosonic LLC File Number: 333-217850-45
CIK: 0001614966 Company Name: Airborne Global Inc. File Number: 333-217850-44
CIK: 0001580072 Company Name: Whippany Actuation Systems, LLC File Number: 333-217850-43
CIK: 0001614965 Company Name: Airborne Acquisition, Inc. File Number: 333-217850-42
CIK: 0001614968 Company Name: Airborne Systems North America Inc. File Number: 333-217850-41
CIK: 0001615730 Company Name: Airborne Holdings, Inc. File Number: 333-217850-40
CIK: 0001614967 Company Name: Airborne Systems NA Inc. File Number: 333-217850-39
CIK: 0001614963 Company Name: Airborne Systems North America of CA Inc. File Number: 333-217850-38
CIK: 0001638075 Company Name: Telair US LLC File Number: 333-217850-37
CIK: 0001657901 Company Name: Pexco Aerospace, Inc. File Number: 333-217850-36
CIK: 0001657904 Company Name: PneuDraulics, Inc. File Number: 333-217850-35
CIK: 0001639209 Company Name: Telair International LLC File Number: 333-217850-34
CIK: 0001077670 Company Name: TRANSDIGM INC File Number: 333-217850-33
CIK: 0001077673 Company Name: MarathonNorco Aerospace, Inc. File Number: 333-217850-32
CIK: 0001706089 Company Name: North Hills Signal Processing Corp. File Number: 333-217850-31
CIK: 0001706090 Company Name: North Hills Signal Processing Overseas Corp. File Number: 333-217850-30
CIK: 0001704630 Company Name: Interiors in Flight LLC File Number: 333-217850-29
CIK: 0001704586 Company Name: SCHROTH Safety Products LLC File Number: 333-217850-28
CIK: 0001689276 Company Name: Data Device Corp File Number: 333-217850-27
CIK: 0000099359 Company Name: BREEZE-EASTERN LLC File Number: 333-217850-26
CIK: 0001689284 Company Name: Beta Transformer Technology Corp File Number: 333-217850-25
CIK: 0001689285 Company Name: Beta Transformer Technology LLC File Number: 333-217850-24
CIK: 0001689430 Company Name: Johnson Liverpool LLC File Number: 333-217850-23
CIK: 0001567715 Company Name: Shield Restraint Systems, Inc. File Number: 333-217850-22
CIK: 0001142160 Company Name: CHAMPION AEROSPACE LLC File Number: 333-217850-21
CIK: 0001486781 Company Name: Dukes Aerospace, Inc. File Number: 333-217850-20
CIK: 0001486784 Company Name: Bruce Aerospace, Inc. File Number: 333-217850-19
CIK: 0001486783 Company Name: CEF Industries, LLC File Number: 333-217850-18
CIK: 0001518069 Company Name: Semco Instruments, Inc. File Number: 333-217850-17
CIK: 0001518064 Company Name: Hartwell Corp File Number: 333-217850-16
CIK: 0001518066 Company Name: McKechnie Aerospace Holdings, Inc. File Number: 333-217850-15
CIK: 0001377127 Company Name: Skurka Aerospace Inc. File Number: 333-217850-14
CIK: 0001084402 Company Name: ADAMS RITE AEROSPACE INC File Number: 333-217850-13
CIK: 0001377125 Company Name: Avionic Instruments LLC File Number: 333-217850-12
CIK: 0001378716 Company Name: CDA INTERCORP LLC File Number: 333-217850-11
CIK: 0001403204 Company Name: Aviation Technologies, Inc. File Number: 333-217850-10
CIK: 0001403202 Company Name: Transicoil LLC File Number: 333-217850-09
CIK: 0001404922 Company Name: AeroControlex Group, Inc. File Number: 333-217850-08
CIK: 0000714124 Company Name: AvtechTyee, Inc. File Number: 333-217850-07
CIK: 0001614971 Company Name: Avionics Specialties, Inc. File Number: 333-217850-06
CIK: 0001689271 Company Name: ILC Industries, LLC File Number: 333-217850-05
CIK: 0001689277 Company Name: Tactair Fluid Controls, Inc. File Number: 333-217850-04
CIK: 0001689275 Company Name: Young & Franklin Inc. File Number: 333-217850-03
CIK: 0001689429 Company Name: ILC Holdings, Inc. File Number: 333-217850-02
CIK: 0001418099 Company Name: AmSafe Global Holdings Inc File Number: 333-217850-01