UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Notice of Effectiveness
Effectiveness Date:	August 20, 2021 3:00 P.M.

Form:	S-4
CIK: 0001260221 Company Name: TransDigm Group INC File Number: 333-258676
CIK: 0000007340 Company Name: ARKWIN INDUSTRIES INC File Number: 333-258676-92
CIK: 0000033619 Company Name: ESTERLINE TECHNOLOGIES CORP File Number: 333-258676-91
CIK: 0000099359 Company Name: BREEZE-EASTERN LLC File Number: 333-258676-90
CIK: 0000714124 Company Name: AvtechTyee, Inc. File Number: 333-258676-89
CIK: 0000739013 Company Name: NORWICH AERO PRODUCTS INC File Number: 333-258676-88
CIK: 0001077670 Company Name: TRANSDIGM INC File Number: 333-258676-87
CIK: 0001077673 Company Name: MarathonNorco Aerospace, Inc. File Number: 333-258676-86
CIK: 0001084402 Company Name: ADAMS RITE AEROSPACE INC File Number: 333-258676-85
CIK: 0001142160 Company Name: CHAMPION AEROSPACE LLC File Number: 333-258676-84
CIK: 0001264276 Company Name: ANGUS ELECTRONICS CO File Number: 333-258676-83
CIK: 0001264277 Company Name: ARMTEC COUNTERMEASURES CO File Number: 333-258676-82
CIK: 0001264278 Company Name: ARMTEC DEFENSE PRODUCTS CO File Number: 333-258676-81
CIK: 0001264279 Company Name: Auxitrol Weston USA, Inc. File Number: 333-258676-80
CIK: 0001264289 Company Name: HYTEK FINISHES CO File Number: 333-258676-79
CIK: 0001264290 Company Name: JANCO CORP File Number: 333-258676-78
CIK: 0001264292 Company Name: KORRY ELECTRONICS CO File Number: 333-258676-77
CIK: 0001264293 Company Name: MASON ELECTRIC CO File Number: 333-258676-76
CIK: 0001377125 Company Name: Avionic Instruments LLC File Number: 333-258676-75
CIK: 0001377127 Company Name: Skurka Aerospace Inc. File Number: 333-258676-74
CIK: 0001378716 Company Name: CDA INTERCORP LLC File Number: 333-258676-73
CIK: 0001403202 Company Name: Transicoil LLC File Number: 333-258676-72
CIK: 0001403204 Company Name: Aviation Technologies, Inc. File Number: 333-258676-71
CIK: 0001404701 Company Name: Leach Holding CORP File Number: 333-258676-70
CIK: 0001404702 Company Name: Leach International Corp File Number: 333-258676-69
CIK: 0001404704 Company Name: Leach Technology Group, Inc. File Number: 333-258676-68
CIK: 0001404705 Company Name: Palomar Products, Inc. File Number: 333-258676-67
CIK: 0001404710 Company Name: Armtec Countermeasures TNO Co. File Number: 333-258676-66
CIK: 0001404713 Company Name: CMC Electronics Aurora LLC File Number: 333-258676-65
CIK: 0001404922 Company Name: AeroControlex Group, Inc. File Number: 333-258676-64
CIK: 0001418099 Company Name: AmSafe Global Holdings Inc File Number: 333-258676-63
CIK: 0001486752 Company Name: ACME Aerospace, Inc. File Number: 333-258676-62
CIK: 0001486781 Company Name: Dukes Aerospace, Inc. File Number: 333-258676-61
CIK: 0001486783 Company Name: CEF Industries, LLC File Number: 333-258676-60
CIK: 0001486784 Company Name: Bruce Aerospace, Inc. File Number: 333-258676-59
CIK: 0001495702 Company Name: Extant Components Group Holdings, Inc. File Number: 333-258676-58
CIK: 0001503143 Company Name: Esterline International Co File Number: 333-258676-57
CIK: 0001503144 Company Name: NMC Group, Inc. File Number: 333-258676-56
CIK: 0001518064 Company Name: Hartwell Corp File Number: 333-258676-55
CIK: 0001518065 Company Name: McKechnie Aerospace DE, Inc. File Number: 333-258676-54
CIK: 0001518066 Company Name: McKechnie Aerospace Holdings, Inc. File Number: 333-258676-53
CIK: 0001518068 Company Name: McKechnie Aerospace US LLC File Number: 333-258676-52
CIK: 0001518069 Company Name: Semco Instruments, Inc. File Number: 333-258676-51
CIK: 0001518070 Company Name: Texas Rotronics, Inc. File Number: 333-258676-50
CIK: 0001518071 Company Name: Electromech Technologies LLC File Number: 333-258676-49
CIK: 0001529278 Company Name: Schneller LLC File Number: 333-258676-48
CIK: 0001567701 Company Name: HarcoSemco LLC. File Number: 333-258676-47
CIK: 0001567706 Company Name: Bridport Holdings, Inc. File Number: 333-258676-46
CIK: 0001567707 Company Name: AmSafe, Inc. File Number: 333-258676-45
CIK: 0001567715 Company Name: Shield Restraint Systems, Inc. File Number: 333-258676-44
CIK: 0001567717 Company Name: Bridport Erie Aviation, Inc. File Number: 333-258676-43
CIK: 0001567722 Company Name: Bridport-Air Carrier, Inc. File Number: 333-258676-42
CIK: 0001580072 Company Name: Whippany Actuation Systems, LLC File Number: 333-258676-41
CIK: 0001614930 Company Name: Aerosonic LLC File Number: 333-258676-40
CIK: 0001614963 Company Name: Airborne Systems North America of CA Inc. File Number: 333-258676-39
CIK: 0001614964 Company Name: Airborne Systems North America of NJ Inc. File Number: 333-258676-38
CIK: 0001614965 Company Name: Airborne Acquisition, Inc. File Number: 333-258676-37
CIK: 0001614966 Company Name: Airborne Global Inc. File Number: 333-258676-36
CIK: 0001614967 Company Name: Airborne Systems NA Inc. File Number: 333-258676-35
CIK: 0001614968 Company Name: Airborne Systems North America Inc. File Number: 333-258676-34
CIK: 0001614971 Company Name: Avionics Specialties, Inc. File Number: 333-258676-33
CIK: 0001615730 Company Name: Airborne Holdings, Inc. File Number: 333-258676-32
CIK: 0001638075 Company Name: Telair US LLC File Number: 333-258676-31
CIK: 0001657901 Company Name: Pexco Aerospace, Inc. File Number: 333-258676-30
CIK: 0001657904 Company Name: PneuDraulics, Inc. File Number: 333-258676-29
CIK: 0001689275 Company Name: Young & Franklin Inc. File Number: 333-258676-28
CIK: 0001689276 Company Name: Data Device Corp File Number: 333-258676-27
CIK: 0001689277 Company Name: Tactair Fluid Controls, Inc. File Number: 333-258676-26
CIK: 0001689284 Company Name: Beta Transformer Technology Corp File Number: 333-258676-25
CIK: 0001689285 Company Name: Beta Transformer Technology LLC File Number: 333-258676-24
CIK: 0001689429 Company Name: ILC Holdings, Inc. File Number: 333-258676-23
CIK: 0001689430 Company Name: Johnson Liverpool LLC File Number: 333-258676-22
CIK: 0001706089 Company Name: North Hills Signal Processing Corp. File Number: 333-258676-21
CIK: 0001706090 Company Name: North Hills Signal Processing Overseas Corp. File Number: 333-258676-20
CIK: 0001758410 Company Name: TransDigm UK Holdings plc File Number: 333-258676-19
CIK: 0001758412 Company Name: Extant Components Group Intermediate, Inc. File Number: 333-258676-18
CIK: 0001758436 Company Name: Symetrics Industries, LLC File Number: 333-258676-17
CIK: 0001758441 Company Name: Kirkhill Inc. File Number: 333-258676-16
CIK: 0001758445 Company Name: Skandia, Inc. File Number: 333-258676-15
CIK: 0001758503 Company Name: Symetrics Technology Group, LLC File Number: 333-258676-14
CIK: 0001758515 Company Name: TEAC Aerospace Holdings, Inc. File Number: 333-258676-13
CIK: 0001758516 Company Name: TEAC Aerospace Technologies, Inc. File Number: 333-258676-12
CIK: 0001771839 Company Name: Esterline Europe Co LLC File Number: 333-258676-11
CIK: 0001771841 Company Name: 17111 Waterview Pkwy LLC File Number: 333-258676-10
CIK: 0001771896 Company Name: Esterline Technologies SGIP LLC File Number: 333-258676-09
CIK: 0001771913 Company Name: TA Aerospace Co. File Number: 333-258676-08
CIK: 0001811408 Company Name: TDG ESL Holdings Inc. File Number: 333-258676-07
CIK: 0001868407 Company Name: Chelton Avionics, Inc. File Number: 333-258676-06
CIK: 0001868414 Company Name: Chelton Avionics Holdings, Inc. File Number: 333-258676-05
CIK: 0001868319 Company Name: Cobham Defense Products, Inc. File Number: 333-258676-04
CIK: 0001868286 Company Name: Leach Mexico Holding LLC File Number: 333-258676-03
CIK: 0001867988 Company Name: NAT Seattle Inc. File Number: 333-258676-02
CIK: 0001639209 Company Name: Nordisk Aviation Products LLC File Number: 333-258676-01