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Parts · Engine

Snap Ring

10 failure reports named the snap ring in the last ten years, 64 since 1995, most often on the Piper PA-44 Seminole; the condition most often found was "broken". 97 FAA approvals let 13 companies make a replacement snap ring, Continental Motors INC holding the most (54). The reports call it "snap ring", "snap-ring".

Reports by year

023461995200020052014202012026
Reports by year, as a table
reports
19955
19964
19976
19984
19993
20003
20015
20023
20031
20041
20052
20063
20073
20082
20124
20143
20152
20162
20171
20193
20201
20211
20221
20261

Which system the reports file it under last ten years

Engine6Airframe structure3Propeller1
Reports by system, as a table
reports
Engine6
Airframe structure3
Propeller1

Models most often reporting it last ten years

Piper PA-44 Seminole3Embraer EMB-145 ERJ 1452Airbus A3191Airbus A3201Cessna U206 Stationair1Hughes 369 500 series helicopters1Saab-Fairchild 3401
Models most reported, as a table
reports
Piper PA-44 Seminole3
Embraer EMB-145 ERJ 1452
Airbus A3191
Airbus A3201
Cessna U206 Stationair1
Hughes 369 500 series helicopters1
Saab-Fairchild 3401

How it failed the condition found, last ten years

broken3corroded1damaged1loose1missing1out of position1unsecure1worn1
Conditions found, as a table
reports
broken3
corroded1
damaged1
loose1
missing1
out of position1
unsecure1
worn1

Engines most often reporting it

Lycoming O-360-A1H6 2Allison (Rolls-Royce) 250-C20B 1General Electric CT7-9B 1International Aero Engines V2524-A5 1Lycoming LO-360-A1H6 1

Approved replacement parts 97 parts manufacturer approvals

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

Continental Motors INC 54Airforms LLC 22True Lock LLC 9Rotair Industries INC 2Electro-Methods INC 2Safran Electronics & Defense, Avionics USA, LLC 1Rockwell Collins INC 1Pacific Sky Supply INC 1Meggitt Safety Systems INC 1Kirkhill Aircraft Parts CO. DBA Proponent 1Hemico INC. 1Helicopter Support INC Services Division 1Gemini Engineering 1

For these models most: Thrush Aircraft Inc S-2 (3), Schweizer Aircraft Corp G-164 (3), Air Tractor Inc AT-400 (3), Ag-Cat Corporation G-164 (3), Sikorsky S-61 (2), Sikorsky S-58 (2), Dehavilland DHC-6 (2), Dassault MYSTERE FALCON 900 (2), Dassault MYSTERE-FALCON 50 (2), Costruzioni Aeronautiche Tecna P2012 (2), Boeing 747 (2), Boeing 737 (2).

MakerPartReplacesFitsGrantedStatus
Airforms LLCSnap Ring APS155-00100155-00100NZSkydive Ltd. 750XL2026-03-09current
Airforms LLCSnap Ring APS155-04500155-04500Air Tractor AT-400, AT-402, AT-5012026-03-09current
Airforms LLCSnap Ring APS155-00100155-00100De Havilland... DHC-6-100, DHC-6-200, DHC-6-3002026-03-09current
Airforms LLCSnap Ring APS155-00100155-00100Piper Aircraft Inc. PA-36-3002026-03-09current
Airforms LLCSnap Ring APS155-00100155-00100Daher Aircraft Design Kodiak 1002026-03-09current
Airforms LLCSnap Ring APS155-08300155-08300De Havilland... DHC-6-1, DHC-6-100, DHC-6-2002026-03-09current
Airforms LLCSnap Ring APS155-04400155-04400Allied Ag Cat Productions G-164C, G-164D, G-164D with 73" wing gap2026-03-09current
Airforms LLCSnap Ring APS155-04400155-04400Thrush Aircraft S2R, S2R-T660, S2R-R13402026-03-09current
Airforms LLCSnap Ring APS155-04400155-04400Air Tractor AT-400, AT-402, AT-5012026-03-09current
Airforms LLCSnap Ring APS155-00100155-00100Allied Ag Cat Productions G-164, G-164A, G-164B2026-03-09current
Airforms LLCSnap Ring APS155-08300155-08300Thrush Aircraft S2R-T6602026-03-09current
Airforms LLCSnap Ring APS155-08300155-08300Air Tractor AT-8022026-03-09current
Airforms LLCSnap Ring APS155-00100155-00100Weatherly Aircraft Company 201A, 201B, 201C2026-03-09current
Airforms LLCSnap Ring APS155-00100155-00100Textron Aviation Inc. 188, A188, 188A2026-03-09current
Airforms LLCSnap Ring APS155-00100155-00100BlanchAir LLC DW-12026-03-09current
Airforms LLCSnap Ring APS155-00100155-00100Air Tractor AT-300, AT-301, AT-3022026-03-09current
Airforms LLCSnap Ring APS155-08300155-08300Textron Aviation Inc. D18C, D18S, E18S2026-03-09current
Airforms LLCSnap Ring APS155-00100155-00100The Waco Aircraft Company YMF2026-03-09current
Airforms LLCSnap Ring APS155-04500155-04500Thrush Aircraft S2R, S2R-T660, S2R-R13402026-03-09current
Airforms LLCSnap Ring APS155-04500155-04500Allied Ag Cat Productions G-164C, G-164D, G-164D with 73" wing gap2026-03-09current
Airforms LLCSNAP RING APS155-00600155-00600Costruzioni... P2012 Traveller2025-07-09current
Airforms LLCSNAP RING APS155-00100155-00100Costruzioni... P2012 Traveller2025-07-09current
Hemico INC.SNAP RING HEM111200-8111200-8Textron Aviation Inc. 99, C99, F902024-10-18current
Safran Electronics & Defense, Avionics USA, LLCSNAP RING STRAINER RETAINER - 2 LUG RS131-24RS131-24Dassault Aviation MYSTERE FALCON 50, MYSTERE FALCON 9002021-10-08current
Kirkhill Aircraft Parts CO. DBA ProponentSNAP RING BACR12BU17SNBACR12BU17SNBoeing 727-200 SERIES, 737-100 SERIES,...2020-09-24current
True Lock LLC1.25-12 Snap Ring APV-1.25-12-3Modification PartCub Crafters CC18-180, CC18-180A2016-08-04current
True Lock LLC1.00-16-3 Snap Ring APV-1.00-16-3Modification PartViking Air Limited DHC-2 Mk. I, DHC-2 Mk. II, DHC-2 Mk. III2016-08-04current
Rockwell Collins INCSnap Ring RS131-24RS131-24Dassault Mystere Falcon 50, Mystere Falcon 9002016-06-01current
Meggitt Safety Systems INCSnap Ring 1315713157Israel Aircraft 1121, 11242015-01-05current
Helicopter Support INC Services DivisionSNAP RING A509265509265Sikorsky S-92A2010-12-15current
True Lock LLCSnap Ring APV-1.25-12-3Modification PartRaytheon Beech) (G362010-06-14current
True Lock LLCSnap Ring LG-2.437-16-4Modification PartGulfstream Aerospace... G-1159, G-1159A, G-1159B2010-06-14current
True Lock LLCSnap Ring APV-1.50-16-3Modification PartCirrus Design Corporation SR20, SR22, SR22T2010-06-14current
True Lock LLCSnap Ring APV-1.50-16-3Modification PartRaytheon Beech) (G362010-06-14current
True Lock LLCSnap Ring APV-1.375-18-3Modification PartCommander Aircraft Company 112, 114, 112TC2010-06-14current
Gemini EngineeringSNAP RING BACR12BU17SNBACR12BU17SNBoeing 727-200 SERIES, '737-100 SERIES,...2003-10-05current
True Lock LLCSnap Ring APV 1.50-16-3Modification PartBeech Raytheon) (A36TC, B36TC, 772001-09-06current
True Lock LLCSnap Ring APV 1.25-12-3Modification PartPiper PA-11, PA-12, PA-142001-09-06current
Pacific Sky Supply INCSnap Ring 6781285PAllison 6781285Allison Engine 501-D13, 501-D13A, 501-D13D1994-05-31current
Rotair Industries INCSnap Ring R1635-61205-0S1635-61205-0Sikorsky S-58A, B, C1992-12-31current
Rotair Industries INCSnap Ring R1635-61210-0S6135-61210-0Sikorsky S-58A, B, C1992-12-31current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400314Riverted Type Impulse-Coupling assembly 10-59479Teledyne Continental C-125-2, C-145-2, 2H1992-02-25current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400320Riverted Type Impulse-Coupling assembly 10-349371Textron Lycoming AEIO-540-D4B5, HIO-540-A1A, IO-540-D4B51992-02-25current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400307Riverted Type Impulse-Coupling assembly 10-160892Teledyne Continental LTSIO-360-E, EB, KB1992-02-25current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400310Riverted Type Impulse-Coupling assembly 10-382754Textron Lycoming TO-360-E1A6D1992-02-25current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400317Riverted Type Impulse-Coupling assembly 10-349359Teledyne Continental O-200-A, B, C1992-02-25current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400322Riverted Type Impulse-Coupling assembly 10-382752Textron Lycoming IO-360-A1B6D, A1D6D, C1E6D1992-02-25current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400318Riverted Type Impulse-Coupling assembly 10-349363Textron Lycoming O-290-D2, D2B1992-02-25current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400303Riverted Type Impulse-Coupling assembly 10-59476Wytwornia 6A4-165-B6, 6V4-178-B3, B321992-02-25current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400319Riverted Type Impulse-Coupling assembly 10-349368Teledyne Continental LTSIO-520-AE1992-02-25current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400312Riverted Type Impulse-Coupling assembly 10-391427Textron Lycoming LIO-360-C1E61992-02-25current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400308Riverted Type Impulse-Coupling assembly 10-349358Teledyne Continental A65, A75, C75-81992-02-25current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400324Riverted Type Impulse-Coupling assembly 10-382756Textron Lycoming O-360-A1G6D, LO-360-E1A6D1992-02-25current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400306Riverted Type Impulse-Coupling assembly 10-157164Teledyne Continental GO-300-A, B, C1992-02-25current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400321Riverted Type Impulse-Coupling assembly 10-357265Textron Lycoming O-235-L2A, L2C, M11992-02-25current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400304Riverted Type Impulse-Coupling assembly 10-59478Wytwornia 6A4-150, 6A4-150-B3, B41992-02-25current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400305Riverted Type Impulse-Coupling assembly 10-89137Textron Lycoming O-435-6, 6A, -231992-02-25current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400313Riverted Type Impulse-Coupling assembly 10-59474Teledyne Continental C75-12, 15, C85-121992-02-25current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400302Riverted Type Impulse-Coupling assembly 10-59473Teledyne Continental C-65, A-75, C-75-81992-02-25current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400325Riverted Type Impulse-Coupling assembly 10-382953Textron Lycoming IO-540-C4D5D, K1A5D, T4A5D1992-02-25current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400326Riverted Type Impulse-Coupling assembly 10-382962Textron Lycoming AEIO-540-L1B5D, IO-540-K1A5D, K1E5D1992-02-25current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400315Riverted Type Impulse-Coupling assembly 10-70370Teledyne Continental E-165-2, 3, 41992-02-25current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400327Riverted Type Impulse-Coupling assembly 10-391429Textron Lycoming AIO-360-A1B, B1B, AEIO-360-A1B1992-02-25current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400316Riverted Type Impulse-Coupling assembly 10-102053Teledyne Continental IO-360-A, B, C1992-02-25current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400301Riverted Type Impulse-Coupling assembly 10-160862Wytwornia 4A-235-B, B31992-02-25current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400323Riverted Type Impulse-Coupling assembly 10-382753Textron Lycoming IO-360-A1B6D, A3B6D, C1E6D1992-02-25current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400309Riverted Type Impulse-Coupling assembly 10-349367Teledyne Continental IO-470-F, J, K1992-02-25current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400311Riverted Type Impulse-Coupling assembly 10-382758Textron Lycoming O-320-H1AD, H2AD, H3AD1992-02-25current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400309, Rev. A, dtd...Riveted Type Impulse-Coupling Assembly P/N 10-349367TCM Engine Model IO-470-F, J, K1987-03-14current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400317, A, dtd 11/11/91...Riveted Type Impulse-Coupling Assembly P/N 10-349359Lycoming Engine Model 0-235-C2B, E2B, F2B1987-03-14current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400301, Rev. A, dtd...Riveted Type Impulse-Coupling Assembly P/N 10-160862Franklin Engine Model 4A-235-B, B31987-03-14current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400324, Rev. A, dtd...Riveted Type Impulse-Coupling Assembly P/N 10-382756Lycoming Engine Model 0-360-A1G6D, LO-360-E1A6D1987-03-14current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400327, Rev. A, dtd...Riveted Type Impulse-Coupling Assembly P/N 10-391429Lycoming Engine Model AIO-360-A1B, B1B, AEIO-360-A1B1987-03-14current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400302, Rev. A, dtd...Riveted Type Impulse-Coupling Assembly P/N 10-59473TCM Engine Model C-65, A-75, C-75-81987-03-14current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400313, Rev. A, dtd...Riveted Type Impulse-Coupling Assembly P/N 10-59474Lycoming Engine Model 0-235-C1, C1A, C1C1987-03-14current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400306, Rev. A, dtd...Riveted Type Impulse-Coupling Assembly P/N 10-157164TCM Engine Model GO-300-A, B, C1987-03-14current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400323, Rev. A, dtd...Riveted Type Impulse-Coupling Assembly P/N 10-382753Lycoming Engine Model IO-360-A1B6D, A3B6D, C1E6D1987-03-14current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400303, Rev. A, dtd...Riveted Type Impulse-Coupling Assembly P/N 10-59476Franklin Engine Model 6A4-165-B6, 6V4-178-B3, B321987-03-14current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400308, Rev. A, dtd...Riveted Type Impulse-Coupling Assembly P/N 10-349358Lycoming Engine Model LIO-360-C1E6, TCM...1987-03-14current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400315, Rev. A, dtd...Riveted Type Impulse-Coupling Assembly P/N 10-70370Lycoming Engine Model GO-435-C2A C2A2, C2B, C2B11987-03-14current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400314, Rev. A, dtd...Riveted Type Impulse-Coupling Assembly P/N 10-59479TCM Engine Model C-125-2, C-145-2, 2H1987-03-14current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400316, Rev. A, dtd...Riveted Type Impulse-Coupling Assembly P/N 10-102053TCM Engine Model IO-360-A, B, C1987-03-14current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400326, Rev. A,...Riveted Type Impulse-Coupling Assembly P/N 10-382962Lycoming Engine Model AEIO-540-L1B5D,...1987-03-14current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400325, Rev. A, dtd...Riveted Type Impulse-Coupling Assembly P/N 10-382953Lycoming Engine Model IO-540-C4D5D, K1A5D, T4A5D1987-03-14current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400319, Rev. A, dtd...Riveted Type Impulse-Coupling Assembly P/N 10-349368TCM Engine Model LTSIO-520-AE1987-03-14current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400311, Rev. A, dtd...Riveted Type Impulse-Coupling Assembly P/N 10-382758Lycoming Engine Model O-320-H1AD, H2AD, H3AD1987-03-14current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400312, Rev. A, dtd...Riveted Type Impulse-Coupling Assembly P/N 10-391427Lycoming Engine Model LIO-360-C1E61987-03-14current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400307, Rev. A, dtd...Riveted Type Impulse-Coupling Assembly P/N 10-160892TCM Engine Model LTSIO-360-E, EB, KB1987-03-14current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400305, Rev. A, dtd...Riveted Type Impulse-Coupling Assembly P/N 10-89137Lycoming Engine Model 0-435-6, 6A, -231987-03-14current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400322, Rev. A, dtd...Riveted Type Impulse-Coupling Assembly P/N 10-382752Lycoming Engine Model IO-360-A1B6D, A1D6D, C1E6D1987-03-14current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400320, Rev. A, dtd...Riveted Type Impulse-Coupling Assembly P/N 10-349371Lycoming Engine Model AEIO-540-D4B5,...1987-03-14current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400310, Rev. A, dtd...Riveted Type Impulse-Coupling Assembly P/N 10-382754Lycoming Engine Model TO-360-E1A6D1987-03-14current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400318, Rev. A, dtd...Riveted Type Impulse-Coupling Assembly P/N 10-349363Lycoming Engine Model 0-290-D2, D2B1987-03-14current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400304, Rev. A, dtd...Riveted Type Impulse-Coupling Assembly P/N 10-59478Franklin Engine Model 6A4-150, 6A4-150-B3, B41987-03-14current
Continental Motors INCSnap Ring Type Impulse-Coupling Assembly 10-400321, Rev. A, dtd...Riveted Type Impulse-Coupling Assembly P/N 10-357265Lycoming Engine Model 0-235-L2A, L2C, M11987-03-14current
Electro-Methods INCSnap Ring EM267309 dated 10-31-74-Pratt & Whitney JT9D-3A, D-7, D-7A1976-06-02current
Electro-Methods INCSnap Ring EM267309, N/C, dated 10-31-74-Pratt & Whitney JT8D-1, -1A, -71975-03-30current

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.