The U.S. aircraft register, updated daily
Parts

Locknut

0 failure reports named the locknut in the last ten years, 5 since 1996. 65 FAA approvals let 20 companies make a replacement locknut, Aircraft Component Design LLC holding the most (37).

Reports by year

0122331996111999
Reports by year, as a table
reports
19963
19981
19991

Approved replacement parts 65 parts manufacturer approvals

A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a locknut and sell it as an approved part for the models named. These are the companies holding such approvals for a locknut:

Aircraft Component Design LLC 37Pma Design & Manufacturing 4Eaton Aeroquip LLC 4Scott'S-Bell 47 INC. 2Quest Aviation Supply INC 2Aviation Materials Management INC 2Turbine Kinetics INC, A Heico Aerospace Company 1Superior Air Parts INC 1Sps Technologies INC 1Rotair Industries INC 1Pacific Sky Supply INC 1Helicopter Technology INC 1Helicopter Tech INC 1Goodrich Corporation 1Extex LTD 1Extex Engineered Products INC 1Connecticut Hydraulics INC 1Aviation Materials Management, INC. 1Aviation Materials Management, INC 1Aerotron Airpower INC 1

For these models most: Sikorsky S-70 (6), Sikorsky EH-60 (5), Dehavilland DHC-6 (5), Boeing 737 (4), Bell 47 (4), Boeing 767 (3), Bell-Carson 47 (3), Sikorsky HH-60 (2), Piper PA-42 (2), Pickering Aviation Inc UH-60 (2), Boeing 757 (2), Boeing 747 (2).

MakerPartReplacesFitsGrantedStatus
Aircraft Component Design LLCLocknut 3022T66P16ACD3022T66P16General Electric Company CT7-5A2, CT7-5A3, CT7-7A2022-09-20current
Aircraft Component Design LLCLocknut 3022T66P16ACD3022T66P16CAPITOL HELICOPTERS INC. UH-60A, HH-60L2022-09-20current
Aircraft Component Design LLCLocknut 3022T66P16ACD3022T66P16ACE Aeronautics UH-60A2022-09-20current
Aircraft Component Design LLCLocknut 3022T66P16ACD3022T66P16Sikorsky Aircraft Corporation S-70C2022-09-20current
Aircraft Component Design LLCLocknut 3022T66P16ACD3022T66P16Northwest Rotorcraft LLC. UH-60A2022-09-20current
Aircraft Component Design LLCLocknut 3022T66P16ACD3022T66P16High Performance... UH-60A2022-09-20current
Aircraft Component Design LLCLocknut 3022T66P16ACD3022T66P16Timberline Helicopters UH-60A2022-09-20current
Aircraft Component Design LLCLocknut 3022T66P01ACD3022T66P01General Electric Company CT7-5A2, CT7-5A3, CT7-7A2022-09-20current
Aircraft Component Design LLCLocknut 3022T66P04ACD3022T66P04General Electric Company CT7-5A2, CT7-5A3, CT7-7A2022-09-20current
Aircraft Component Design LLCLocknut 3022T66P16ACD3022T66P16SIXTYHAWK TC EH-60A, HH-60L, UH-60A2022-09-20current
Aircraft Component Design LLCLocknut 3022T66P16ACD3022T66P16BILLINGS FLYING SERVICE INC. UH-60A2022-09-20current
Aircraft Component Design LLCLocknut 3022T66P16ACD3022T66P16PJ Helicopters Inc. UH-60A2022-09-20current
Aircraft Component Design LLCLocknut 3022T66P07ACD3022T66P07General Electric Company CT7-5A2, CT7-5A3, CT7-7A2022-09-20current
Aircraft Component Design LLCLocknut 3022T66P16ACD3022T66P16Delta Enterprise UH-60A, EH-60A2022-09-20current
Aircraft Component Design LLCLocknut 3022T66P16ACD3022T66P16Sikorsky Aircraft Corporation S-70A, S-70M2022-09-20current
Aircraft Component Design LLCLocknut 3022T66P16ACD3022T66P16Carson Helicopters UH-60A2022-09-20current
Aircraft Component Design LLCLocknut 3022T66P16ACD3022T66P16BHI H60Helicopters UH-60A2022-09-20current
Aircraft Component Design LLCLocknut 3022T66P16ACD3022T66P16Unical Aviation UH-60A2022-09-20current
Aircraft Component Design LLCLocknut 3022T66P16ACD3022T66P16Pickering Aviation EH-60A, UH-60A2022-09-20current
Aircraft Component Design LLCLocknut 3022T66P16ACD3022T66P16SKYDANCE BLACKHAWK OPERATIONS UH-60A2022-09-20current
Aircraft Component Design LLCLocknut Assembly RB34724ACDRB34724Piper Aircraft PA-42, PA-42-720, PA-42-10002021-09-29current
Aircraft Component Design LLCLocknut Assembly RB34724ACDRB34724Piper Aircraft PA-46-500TP2021-09-29current
Aircraft Component Design LLCLocknut Assembly RB34724ACDRB34724Textron Aviation... E902021-09-29current
Aircraft Component Design LLCLocknut Assembly RB34724ACDRB34724Textron Aviation Inc. (A24CE) 200, 200C, 200CT2021-09-29current
Aircraft Component Design LLCLocknut Assembly RB34724ACDRB34724Textron Aviation... B99, C99, A100(UF21-F)2021-09-29current
Aircraft Component Design LLCLocknut Assembly RB34724ACDRB34724Textron Aviation Inc. (A31CE) F902021-09-29current
Aircraft Component Design LLCLocknut 3022T66P02ACD3022T66P02Sikorsky Aircraft Corporation S-70C(M1)S-70C(M)2021-08-06current
Aircraft Component Design LLCLocknut 3022T66P02ACD3022T66P02Delta Enterprise UH-60A, EH-60A2021-08-06current
Aircraft Component Design LLCLocknut 3022T66P02ACD3022T66P02Sikorsky Aircraft Corporation S-70 (UH-60A, UH-60L)2021-08-06current
Aircraft Component Design LLCLocknut 3022T66P02ACD3022T66P02Pickering Aviation EH-60A, UH-60A2021-08-06current
Aircraft Component Design LLCLocknut 3022T66P02ACD3022T66P02Sikorsky Aircraft Corporation S-70C2021-08-06current
Aircraft Component Design LLCLocknut 3022T66P02ACD3022T66P02Ace Aeronautics UH-60A2021-08-06current
Aircraft Component Design LLCLocknut 3022T66P02ACD3022T66P02General Electric... CT7-5A2, CT7-5A3, CT7-7A2021-08-06current
Aircraft Component Design LLCLocknut 3022T66P02ACD3022T66P02Sikorsky Aircraft Corporation S-70A, S-70M2021-08-06current
Aircraft Component Design LLCLocknut 3022T66P02ACD3022T66P02Carson Helicopters UH-60A2021-08-06current
Pma Design & ManufacturingLocknut PDM71-336-171-336-1Viking Air Limited DHC-6-4002019-06-23current
Pma Design & ManufacturingLocknut PDM71-156-1171-156-11Viking Air Limited DHC-6-4002019-06-23current
Turbine Kinetics INC, A Heico Aerospace CompanyLocknut 3022T66P02KTGeneral Electric P/N 3022T66P02General Electric... CF34-1A, CF34-3A, CF34-3A12018-12-16current
Eaton Aeroquip LLCLocknut - Hex Head - 1200 Deg F 57979-357979-3Boeing 757-200 Series, 757-200CB Series,...2017-03-30current
Eaton Aeroquip LLCLocknut - Hex Head - 1200 Deg F 57979-457979-4Boeing 747-400 Series, 747-400D Series,...2017-03-30current
Eaton Aeroquip LLCLocknut - Hex Head - 1200 Deg F 57979-457979-4Boeing 747-400 Series, 747-400D Series,...2017-03-30current
Eaton Aeroquip LLCLocknut - Hex Head - 1200 Deg F 57979-357979-3Boeing 757-200 Series, 757-200CB Series,...2017-03-30current
Extex Engineered Products INCLocknut E68231696823169Rolls-Royce 250-B15G, B17, B17B2016-09-07current
Aircraft Component Design LLCLocknut 3022T66P02ACD3022T66P02General Electric CT7-8, CT7-8A, CT7-8A12016-08-09current
Aviation Materials Management, INCLocknut 69-73042-169-73042-1Boeing 737-200 Series, 737-200C Series,...2015-02-12current
Aviation Materials Management, INC.Locknut 69-73042-169-73042-1Boeing 737-200 Series, 737-200C Series,...2014-09-04current
Aviation Materials Management INCLocknut 69-73042-169-73042-1Boeing 737-200 Series, 737-200C Series,...2013-02-27current
Scott'S-Bell 47 INC.Locknut, Throttle Control SB47-631-151-00147-631-151-1Scott's - Bell 47, Inc. 47D-1, 47G, 47G-22013-01-23current
Scott'S-Bell 47 INC.Locknut, Throttle Control SB47-631-151-00147-631-151-1Scott's - Bell 47, Inc. 47D-1, 47G, 47G-22013-01-23current
Aircraft Component Design LLCLocknut, No. 2 Bearing 839B312P001ACD839B312P001General Electric CT58-140-1, CT58-140-22012-11-25current
Helicopter Technology INCLocknut, Mast (Main) R47-130-116-147-130-116-1 Bell HelicopterBell Helicopter Comp 47D-1, 47G, 47G-22011-12-08current
Quest Aviation Supply INCLocknut, Rod End, Ball Screw, Thrust Reverser 3238730QAS-13238730-1General Electric CF6-80C2A1, -80C2A2, -80C2A3 -80C2A52010-12-01current
Quest Aviation Supply INCLocknut, Rod End, Ball Screw, Thrust Reverser 3238730QAS-13238730-1General Electric CF6-80C2A1, -80C2A2, -80C2A3 -80C2A52010-10-17current
Pma Design & ManufacturingLOCKNUT PDM71-336-171-336-1Viking Air Ltd. DHC-6-100, 200, 300 series2009-04-16current
Pma Design & ManufacturingLocknut PDM71-156-1171-156-11Viking Air Limited DHC-6-100, 200, 300 series2009-01-25current
Aerotron Airpower INCLocknut 4110466-1AAHoneywell P/N 4110466-1Boeing 767 Series2007-02-01current
Aviation Materials Management INCLocknut 69-73042-169-73042-1Boeing 737-200 Series, 737-200C Series,...2006-08-24current
Goodrich CorporationLocknut, Terminal Screw E-5735-2EModification PartAerospace Technologies N22B, N24A (TC A7PC) with Hartzell...2004-08-03current
Pacific Sky Supply INCLocknut, Gear 582852P582852Hamilton Standard Division 54H60-91, -1172004-01-26current
Extex LTDLocknut E68231696823169Rolls-Royce 250-B15G, B17, B17B2002-12-01current
Sps Technologies INCLocknut, DH D52Z1835-064P&W 318659Pratt & Whitney JT9D-3A, 7, 7A1998-09-08current
Helicopter Tech INCLocknut, Mast (Main) R47-130-116-147-130-116-1 Bell HelicopterBell 47D-1, 47G, -21998-05-26current
Superior Air Parts INCLocknut A6823169Allison 6823169Allison Engine 250-B15G, B17F, B17F/11994-03-22current
Connecticut Hydraulics INCLocknut, Ball Bearing CM-25851Chandler Evans 25851Honeywell T53-13A, -13B, -17A1993-11-16current
Rotair Industries INCLocknut R1510-24237-0S1510-24237-0Sikorsky S-64A1992-12-31current

Sources: the FAA's service difficulty reports since 1995 (a report is a part that failed and was fixed, as filed by an airline, repair station or owner; the count shows reporting as much as reliability) and the parts manufacturer approvals in the FAA's Dynamic Regulatory System. The part name is the reporters' and the approval holders' own words, reduced to the first plain words so that spellings meet.