Parts · Engine

Retaining Ring

21 failure reports named the retaining ring in the last ten years, 69 since 1995, most often on the Boeing 737; the condition most often found was "broken". 77 FAA approvals let 25 companies make a replacement retaining ring, Mcfarlane Aviation INC holding the most (15).

Reports by year

Reports by year, as a table

	reports
1995	1
1996	3
1997	1
1998	1
2004	11
2005	3
2006	1
2007	3
2008	4
2010	6
2011	2
2012	3
2013	4
2014	4
2015	1
2016	5
2017	1
2018	2
2019	5
2021	1
2023	2
2024	3
2025	1
2026	1

Which system the reports file it under last ten years

Engine5Airframe structure5Landing gear4Cabin, seats and restraints3Electrical power2Propeller1Rotorcraft systems1

Reports by system, as a table

	reports
Engine	5
Airframe structure	5
Landing gear	4
Cabin, seats and restraints	3
Electrical power	2
Propeller	1
Rotorcraft systems	1

Models most often reporting it last ten years

Models most reported, as a table

	reports
Boeing 737	4
Bombardier CL-600 Challenger and CRJ	3
Airbus A321	1
Bell 407	1
Boeing 787 Dreamliner	1
Bombardier DHC-8 Dash 8 and Q400	1
Cessna 560 Citation V, Ultra, Encore and Excel	1
Cessna 680 Citation Sovereign and Latitude	1
Cessna 750 Citation X	1
Embraer EMB-145 ERJ 145	1
Embraer ERJ 190 E190 and E195	1
Piper PA-28 Cherokee, Warrior, Archer and Arrow	1

How it failed the condition found, last ten years

broken5missing3defective2corroded1cracked1damaged1deformed1detached1dislodged1displaced1

Conditions found, as a table

	reports
broken	5
missing	3
defective	2
corroded	1
cracked	1
damaged	1
deformed	1
detached	1
dislodged	1
displaced	1

Engines most often reporting it

Allison (Rolls-Royce) 250-C47B 1 CFM International CFM56-7B27E 1 General Electric CF34-10E6 1 General Electric CF34-8C5B1 1 General Electric CT7-9B 1 Lycoming O-360-A4M 1 Pratt & Whitney Canada PW535B 1

Approved replacement parts 77 parts manufacturer approvals

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

For these models most: Boeing 737 (15), Boeing 747 (11), Airbus A321 (6), Airbus A320 (5), Sikorsky S-61 (4), Cessna A152 (4), Cessna A150 (4), Cessna 177 Cardinal (4), Cessna 172 Skyhawk (4), Cessna 152 (4), Cessna 150 (4), Boeing 767 (4).

Maker	Part	Replaces	Fits	Granted	Status
Goodrich Corporation	RETAINING RING ELR14-H106	ELR14-H106	The Boeing Company MD-90-30	2024-08-01	current
Hartzell Engine Technologies LLC	Retaining Ring AB-92815-37	Continental10-92815-37	Lycoming Engines O-235-C1, -C1A, -C1B	2023-12-08	current
Hartzell Engine Technologies LLC	Retaining Ring AB-92815-37	Continental10-92815-37	Continental... -65-1, -12, -12F	2023-12-08	current
Lanair Research and Development INC	Retaining Ring LA18203	CA18203	Embraer S.A. EMB-145, EMB-145ER, EMB-145MR	2023-05-31	current
Mcfarlane Aviation INC	Retaining Ring MC155-00300	155-00300	Piper Aircraft PA-23, PA-23-160, PA-23-235	2021-09-09	current
Mcfarlane Aviation INC	Retaining Ring MC155-11900	155-11900, 762-562, A-1636-24	Piper Aircraft PA-28-140 s/n 28-20002 thru...	2021-09-09	current
Mcfarlane Aviation INC	Retaining Ring MC155-04400	155-04400, 155-44, 762-614	Piper Aircraft PA-31-350, PA-31P, PA-31P-350	2021-09-09	current
Mcfarlane Aviation INC	Retaining Ring MC155-00100	155-00100, 155-1, 3023, 752-830	Aerostar Aircraft Corporation PA-60-600 (AEROSTAR 600), PA-60-601...	2021-09-09	current
Mcfarlane Aviation INC	Retaining Ring MC155-00100	155-00100, 155-1, 3023, 752-830	Lavia Argentina S.A.... PA-25-235 s/n 25-4172 thru...	2021-09-09	current
Mcfarlane Aviation INC	Retaining Ring MC155-00100	155-00100, 155-1, 3023, 752-830	Piper Aircraft J-3, TG-8 (Army TG-8, Navy XLNP-1)	2021-09-09	current
Mcfarlane Aviation INC	Retaining Ring MC155-11800	155-11800, 762-561, A-1636-23	Piper Aircraft PA-28-151, PA-28-161, PA-28-201T	2021-09-09	current
Mcfarlane Aviation INC	Retaining Ring MC155-00200	155-00200, 155-2, 756-008	FS 2003 Corp. PA-12, PA-12S	2021-09-09	current
Mcfarlane Aviation INC	Retaining Ring MC155-00200	155-00200, 155-2, 756-008	FS 2001 Corp. AE-1, HE-1, J5A (Army L-4F)	2021-09-09	current
Mcfarlane Aviation INC	Retaining Ring MC155-00200	155-00200, 155-2, 756-008	Piper Aircraft J-3, TG-8 (Army TG-8, Navy XLNP-1)	2021-09-09	current
Mcfarlane Aviation INC	Retaining Ring MC155-00200	155-00200, 155-2, 756-008	FS 2002 Corp. PA-14	2021-09-09	current
Kenmore Air Harbor INC	Retaining Ring KAC2UT129	C2UT129	Viking Air Limited DHC-2 Mk. I, DHC-2 Mk. II, DHC-2 Mk. III	2020-10-23	current
Approved Air Parts CO INC	Retaining Ring AAP-3504313-1	Honeywell P/N 3504313-1	Boeing 737-300 Series, 737-400 Series,...	2020-10-06	current
Jet Avion Corporation A Heico Aerospace Company	Retaining Ring 649-786-803-0JA	CFM International P/N 649-786-803-0	CFM International S.A. CFM56-2, CFM56-2B, CFM56-3B	2020-08-26	current
New Horizons	Retaining Ring 10-102476NH	Bendix/Unison 10-102476	International Aero Engines V2500-A1, V2522-A5, V2524-A5	2019-10-23	current
Thales Avionics INC	RETAINING RING CA21037C-4R	Modification Part	Airbus A321-271NX	2019-09-07	current
Thales Avionics INC	RETAINING RING CA21037C-4R	Modification Part	Airbus A321-231	2019-04-17	current
Thales Avionics INC	RETAINING RING CA21037C-4R	Modification Part	Airbus A320-232, -271N	2019-03-13	current
Thales Avionics INC	Retaining Ring 322600-2201	Modification Part	Boeing 737-8	2018-11-03	current
Peco INC	RETAINING RING, GASPER, THREADED 70062	70062	Boeing 737-700 Series, 737-800 Series,...	2018-05-29	current
Peco INC	RETAINING RING, EXTERNAL, 2.000 INCH DIA. 69714	69714	Boeing 737-700 Series, 737-8, 737-800 Series	2018-05-29	current
Lanair Research and Development INC	Retaining Ring LA18203	CA18203	Embraer S.A. EMB-145, EMB-145ER, EMB-145MR	2017-04-13	current
Able Aerospace Services, INC.	Retaining Ring 526869AA	526869	BELL 204B, 205A-1, 212	2017-02-01	current active
Able Engineering and Component Services, INC.	Retaining Ring 526869AA	526869	Bell Helicopter Textron, Inc. 204B, 205A-1, 212	2017-02-01	current active
Able Aerospace Services, INC.	Retaining Ring 370211AA	370211	ERICKSON INCORPORATED (T73-P-1) JFTD12A-4A, (T73-P-700) JFTD12A-5A	2017-02-01	current active
Able Engineering and Component Services, INC.	Retaining Ring 370211AA	370211	Erickson Incorporated (T73-P-1), JFTD12A-4A, (T73-P-700)	2017-02-01	current active
Extex Engineered Products INC	Retaining Ring, Internal E23009342	23009342	Rolls-Royce 250-B15G, B17F, B17F/1	2016-09-07	current
New Horizons	Retaining Ring 10-102476NH	Bendix/Unison 10-102476	International Aero Engines V2500-A1, V2522-A5, V2524-A5	2016-05-03	current
New Horizons	Retaining Ring 10-319093NH	10-319093	CFM International CFM-56-2A, -3B, -3C) General Electric (CF6-6	2016-02-21	current
New Horizons	Retaining Ring 10-380097NH	10-380097	CFM International CFM-56-2A, -3B, -3C) General Electric (CF6-6	2016-02-21	current
New Horizons	Retaining Ring 10-102476NH	Bendix/Unison 10-102476	International Aero Engines V2500-A1, V2522-A5, V2524-A5	2016-02-21	current
Jet Parts Engineering INC	Retaining Ring 4095T50P01JP	4095T50P01	General Electric CF34-3B1, CF34-8C1, CF34-8C5	2015-11-11	current
Pma Design & Manufacturing	Retaining Ring PDM52-01108-1	52-01108-1	Viking Air Limited DHC-6-100, -200, -300	2015-07-26	current
Kelly Aerospace Energy Systems LLC	Retaining Ring AB-92815-37	Continental Motors 10-92815-37	Continental Motors A-65, -75, C-75-8	2015-05-14	current
Mcfarlane Aviation INC	RETAINING RING MC155-11800	155-11800, A1636-23, A1636-23	Cessna 150L s/n ALL, 150M s/n ALL, 152 s/n ALL	2015-03-09	current
Mcfarlane Aviation INC	RETAINING RING MC155-11900	155-11900, A1636-24	Cessna 150L s/n 15072004 thru 15074891,...	2015-03-09	current
Mcfarlane Aviation INC	RETAINING RING MC155-00100	155-00100, 155-0100, 3023	Cessna 150D s/n ALL, 150E s/n ALL, 150F s/n ALL	2015-03-09	current
Mcfarlane Aviation INC	RETAINING RING MC155-00200	155-00200, 155-2	Cessna 150A s/n ALL, 150B s/n ALL, 150C s/n ALL	2015-03-09	current
Aviation Materials Management, INC	Retaining Ring 161A1194-1	161A1194-1	Boeing 737-600 Series, 737-700 Series,...	2015-02-12	current
Hrd Aerosystems INC	Retaining Ring 1A2466H	1A2466	Boeing 737, 737-100 Series, 737-200 Series	2015-01-15	current
New Horizons	Retaining Ring 10-380097NH	10-380097	CFM International CFM-56-2A, -3B, -3C) General Electric (CF6-6	2014-12-09	current
New Horizons	Retaining Ring 10-319093NH	10-319093	CFM International CFM-56-2A, -3B, -3C) General Electric (CF6-6	2014-12-09	current
Soundair Aviation Services	Retaining Ring SP3810-07-1025	11301-5037	Boeing 737-200 Series, 737-300 Series,...	2014-11-23	current
Wencor LLC	Retaining Ring 11301-5037WE	11301-5037	BOEING 737-300 Series, 737-400 Series,...	2014-10-14	current
Dassault Falcon Jet CORP	Retaining Ring F90-51621-13	Modification Part	Dassault Aviation Falcon 900	2014-10-09	current
Dassault Falcon Jet CORP	Retaining Ring F90-51621-13	Modification Part	Dassault Aviation Falcon 50	2014-10-09	current
Aviation Materials Management, INC.	Retaining Ring 161A1194-1	161A1194-1	Boeing 737-600 Series, 737-700 Series,...	2014-09-04	current
Aviation Materials Management INC	RETAINING RING 69B04071-2	69B04071-2	Boeing 747-100 SERIES, 747-100B SERIES,...	2013-03-25	current
Aviation Materials Management INC	RETAINING RING 69B00258-1	69B00258-1	Boeing 747-100 SERIES, 747-100B SERIES,...	2013-03-25	current
Lanair Research and Development INC	Retaining Ring LA18203	CA18203	EMBRAER EMB-145, EMB-145ER, EMB-145MR	2013-03-24	current
Aviation Materials Management INC	Retaining Ring 161A1194-1	161A1194-1	Boeing 737-600 Series, 737-700 Series,...	2013-02-26	current
Jet Avion Corporation	Retaining Ring JA104033-0	104033-0	CFM International CFM56-2, CFM56-2A, CFM56-2B	2013-02-21	current
Certified Aerospace Corporation, INC.	Retaining Ring-Forward Trunnion Bearing, Main Landing Gear CAC32A -1194-2	161A1194-2	Boeing 737-600, 737-700, 737-700C	2012-12-19	current
Certified Aerospace Corporation, INC.	Retaining Ring-Forward Trunnion Bearing, Main Landing Gear CAC32A -1194-1	161A1194-1	Boeing 737-600, 737-700, 737-700C	2012-12-19	current
Seal Dynamics INC	Retaining Ring 245-666SD	Goodrich P/N 245-666	Airbus A319 series, A320 series, A321 series	2012-05-10	current
Airmotive Engineering CORP	Retaining Ring, Internal AEC534715	534715	Continental O-470-A, B, B-CI	2011-06-20	current
New Horizons	Retaining Ring 10-102476NH	Bendix/Unison 10-102476	International Aero Engines V2500-A1, V2522-A5, V2524-A5	2011-05-09	current
Seal Dynamics INC	Retaining Ring 5909942-1SD	Hamilton Sundstrand 5909942-1	Airbus A300, Model B4-601, -603	2010-11-16	current
Aviation Materials Management INC	Retaining Ring 161A1194-1	161A1194-1	Boeing 737-600 Series, 737-700 Series,...	2010-10-05	current
Pma Design & Manufacturing	Retaining Ring PDM95-26147	95-26147	Viking Air Ltd. DeHavilland) (DHC-6 Series -100, -200, & -300	2010-01-26	current
Pma Design & Manufacturing	Retaining Ring PDM95-26147	95-26147	Viking Air Ltd. DeHavilland) (DHC-6 Series -100, -200, & -300	2009-12-22	current
New Horizons	Retaining Ring NH102476	Bendix/Unison 10-102476	CFMI CFM56-2B, -3B, -3C	2009-11-09	current
Goodrich Landing Gear	RETAINING RING 69B00258-1	69B00258-1	Boeing 747-100 SERIES, 747-100B SERIES,...	2009-04-09	current
Goodrich Landing Gear	RETAINING RING 69B04071-2	69B04071-2	Boeing 747-100 SERIES, 747-100B SERIES,...	2009-04-09	current
Goodrich Landing Gear	RETAINING RING 69B00258-1	69B00258-1	Boeing 747-100 SERIES, 747-100B SERIES,...	2009-04-09	current
Goodrich Landing Gear	RETAINING RING 69B04071-2	69B04071-2	Boeing 747-100 SERIES, 747-100B SERIES,...	2009-04-09	current
Gemini Engineering	RETAINING RING 69B00258-1	69B00258-1	Boeing 747-100 Series, 747-100 Series,...	2008-08-12	current
New Horizons	Retaining Ring NH102476	Bendix/Unison 10-102476	Pratt & Whitney JT8D-1, -1A, -1B	2006-10-30	current
Advanced Propeller Systems LLC	Retaining Ring -Control Shaft APS-1636-29	1636-29	McCauley C20373-X, D20309-X, D20672-X	2006-10-11	current
Sonic Industries INC	RETAINING RING 232A4295-3	232A4295-3	Boeing 737-600 SERIES, 737-700 SERIES,...	2006-05-15	current
Edc	Retaining Ring A9635-1EDC	A9635-1 (Honeywell)	Boeing 737-200 Series, 737-300 Series,...	2005-02-07	current
Extex LTD	Retaining Ring, Internal E23009342	23009342	Rolls-Royce 250-B15G, B17F, B17F/1	2002-12-01	current
Precision Ring INC	Retaining Ring 3075377-1PR	Garrett 3075377-1	Garrett TFE731-5, -5R, -5AR	2002-10-07	current
Precision Ring INC	Retaining Ring 3073754-1PR	Garrett 3073754-1	Garrett TFE731-2, -2A, -3	2002-10-07	current
Aviation Component Solutions	Retaining Ring P00081	Hamilton Sundstrand 5909942-1	Airbus A300-600, A310, A319	2001-07-15	current
Aviation Component Solutions	Retaining Ring P00080	Hamilton Sundstrand 5907508	Airbus A300-600, A310, A319	2001-07-15	current
Parker Hannifin CORP, Nichols Airborne Division	Retaining Ring 38-18306-0009-1NAD Rev. -...	General electric P/N 38-18306-0009-1	General Electric CT7-5A2/CT7-5A3/CT7-7A/CT7-7A1/CT7-9B...	1999-05-17	current
Parker Hannifin CORP, Nichols Airborne Division	Retaining Ring 38-18306-0008-1NAD Rev- -...	General Electric P/N 38-18306-0008-1	General Electric CT7-5A2/CT7-5A3/CT7-7A/CT7-7A1/CT7-9B...	1999-05-17	current
Aero Accessories INC	Retaining Ring Dist. Grear ES10-92815-37	Bendix 10-92815-37	Avco Lycoming,... Replacement for Bendix P/N...	1996-02-07	current
Aero Accessories INC	Retaining Ring Oil Slinger ES10-92815-62	Bendix 10-92815-62	Avco Lycoming,... Replacement for Bendix P/N...	1996-02-07	current
Aero Accessories INC	Retaining Ring Oil Slinger P/N ES10-92815-62	Bendix P/N 10-92815-62	Avco Lycoming Replacement for Bendix P/N...	1996-02-07	current
Aero Accessories INC	Retaining Ring Dist. Grear P/N ES10-92815-37	Bendix P/N 10-92815-37	Avco Lycoming Replacement for Bendix P/N...	1996-02-07	current
Rotair Industries INC	Retaining Ring R61073-80000-102	S61073-80000-102	Sikorsky S-61N/NM (T.C. 1H15)	1995-07-31	current
Electro-Methods INC	Aft Retaining Ring EMI-140-198-01	Textron Lycoming 1-140-198-01	Honeywell T5313B, 17A, T53-L-13B	1995-01-05	current
Rotair Industries INC	Retaining Ring R61120-23052-101	Sikorsky 61120-23052-101	Sikorsky S-61L, N, NM	1994-03-23	current
Optimum Engineering & Manufacturing	Retaining Ring Z1-300-316-01	1-300-316-01	Honeywell T5313B, T5317A, T5317A-1	1992-12-31	current
Rotair Industries INC	Retaining Ring R6135-22029-1	S6135-22029-1	Sikorsky S-61A, D, R	1992-12-31	current
Rotair Industries INC	Retaining Ring R1565-61317-0	Sikorsky S1565-61317-0	Sikorsky S-61N, S-61NM, S-61R	1992-06-30	current

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.