X0101 EFFECT 33 LIVE 2016-02-01 17:00:00

S-4

0001260221 TransDigm Group INC 333-208021 0001567715 Shield Restraint Systems, Inc. 333-208021-46 0001657904 PneuDraulics, Inc. 333-208021-45 0001657901 Pexco Aerospace, Inc. 333-208021-44 0001638075 Telair US LLC 333-208021-43 0001639209 Telair International LLC 333-208021-42 0001518066 McKechnie Aerospace Holdings, Inc. 333-208021-41 0001518068 McKechnie Aerospace US LLC 333-208021-40 0001518065 McKechnie Aerospace DE, Inc. 333-208021-39 0001518067 McKechnie Aerospace Investments, Inc. 333-208021-38 0001518070 Texas Rotronics, Inc. 333-208021-37 0001518071 Electromech Technologies LLC 333-208021-36 0001529278 Schneller LLC 333-208021-35 0001567701 HARCO LLC 333-208021-34 0001418099 AmSafe Global Holdings Inc 333-208021-33 0001567706 Bridport Holdings, Inc. 333-208021-32 0001567717 Bridport Erie Aviation, Inc. 333-208021-31 0001567707 AmSafe, Inc. 333-208021-30 0001567722 Bridport-Air Carrier, Inc. 333-208021-29 0000007340 ARKWIN INDUSTRIES INC 333-208021-28 0001614930 Aerosonic LLC 333-208021-27 0001614966 Airborne Global Inc. 333-208021-26 0001580072 Whippany Actuation Systems, LLC 333-208021-25 0001614965 Airborne Acquisition, Inc. 333-208021-24 0001614968 Airborne Systems North America Inc. 333-208021-23 0001615730 Airborne Holdings, Inc. 333-208021-22 0001614967 Airborne Systems NA Inc. 333-208021-21 0001614963 Airborne Systems North America of CA Inc. 333-208021-20 0001518064 Hartwell Corp 333-208021-19 0001518069 Semco Instruments, Inc. 333-208021-18 0001486783 CEF Industries, LLC 333-208021-17 0001486784 Bruce Aerospace, Inc. 333-208021-16 0001486781 Dukes Aerospace, Inc. 333-208021-15 0001142160 CHAMPION AEROSPACE LLC 333-208021-14 0001077670 TRANSDIGM INC 333-208021-13 0001077673 MarathonNorco Aerospace, Inc. 333-208021-12 0001377127 Skurka Aerospace Inc. 333-208021-11 0001084402 ADAMS RITE AEROSPACE INC 333-208021-10 0001377125 Avionic Instruments LLC 333-208021-09 0001486752 ACME Aerospace, Inc. 333-208021-08 0001403204 Aviation Technologies, Inc. 333-208021-07 0001403202 Transicoil LLC 333-208021-06 0001404922 AeroControlex Group, Inc. 333-208021-05 0000714124 AvtechTyee, Inc. 333-208021-04 0001614971 Avionics Specialties, Inc. 333-208021-03 0001378716 CDA INTERCORP LLC 333-208021-02 0001614964 Airborne Systems North America of NJ Inc. 333-208021-01