The U.S. aircraft register, updated daily
Parts · Engine

Piston Ring

8 failure reports named the piston ring in the last ten years, 57 since 1995, most often on the Cessna 402; the condition most often found was "broken". 406 FAA approvals let 25 companies make a replacement piston ring, Airtomic - A Dover Company (Formerly Cook Airtomic) holding the most (143).

Reports by year

024681995200020052011201612025
Reports by year, as a table
reports
19951
19962
19972
19988
19994
20002
20013
20021
20031
20043
20057
20061
20072
20082
20102
20111
20121
20131
20142
20153
20165
20171
20241
20251

Which system the reports file it under last ten years

Engine8
Reports by system, as a table
reports
Engine8

Models most often reporting it last ten years

Cessna 4023Piper PA-31 Navajo and Chieftain2Cessna U206 Stationair1Piper PA-18 Super Cub1
Models most reported, as a table
reports
Cessna 4023
Piper PA-31 Navajo and Chieftain2
Cessna U206 Stationair1
Piper PA-18 Super Cub1

How it failed the condition found, last ten years

broken2stuck2damaged1leaking1missing1out of alignment1
Conditions found, as a table
reports
broken2
stuck2
damaged1
leaking1
missing1
out of alignment1

Engines most often reporting it

Continental TSIO-520-VB 3Continental IO-550-N 1Lycoming LTIO-540-J2BD 1Lycoming O-320 series 1Lycoming TIO-540-J2BD 1Rolls-Royce RB-211 series 1

Approved replacement parts 406 parts manufacturer approvals

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

Airtomic - A Dover Company (Formerly Cook Airtomic) 143Superior Air Parts INC 55Cook Airtomic 29Goodrich Landing Gear 20Aviation Materials Management INC 16Jet Parts Engineering INC 14Aviation Component Solutions 13Precision Ring INC 12Wencor LLC 11Jet Avion Corporation A Heico Aerospace Company 9Jet Parts Engineering, INC. (Jpe) 8Aviation Materials Management, INC. 8Aviation Materials Management, INC 8Growth Industries INC 7Combustion Technologies 7Ptm International INC 6Jet Parts Engineering, LLC. (Jpe) 6United Ring and Seal INC 5Continental Motors INC 5Continental Aerospace Technologies INC 5Airtomic 5Valtec Aircraft Supply 4Gemini Engineering 4Spirit Aerosystems INC 3Pma Sales LLC 3

For these models most: Boeing 737 (65), Boeing 707 (42), Boeing 767 (35), Boeing 727 (35), Boeing 777 (33), Boeing 747 (33), Boeing 757 (29), Bombardier CL-600 Challenger and CRJ (7), Airbus A300 (7), Mcdonnell Douglas DC-10 (3), Douglas DC-8 (3), Airbus A340 (3).

MakerPartReplacesFitsGrantedStatus
Aviation Component SolutionsPiston Ring P01682799803-1The Boeing Company 747-200B Series, 747-300 Series,...2026-03-02current
Aviation Component SolutionsPiston Ring Set P014821001543-3The Boeing Company 787-8, 787-9, 787-102026-01-06current
Aviation Component SolutionsPiston Ring P002256713-17AAirbus SAS A321-271NX2025-11-24current
Aviation Component SolutionsPiston Ring Set P00290323528Airbus SAS A318-111, A318-112, A319-1112025-10-29current
Aviation Component SolutionsPiston Ring Set P00290323528CFM International S.A. CFM56-5B1, CFM56-5B1/P, CFM56-5B1/2P2025-10-29current
Aviation Component SolutionsPiston Ring P007833177245-1Airbus SAS A330-202, A330-223F, A330-2432025-09-16current
Aviation Component SolutionsPiston Ring P0139163000788-1The Boeing Company 737-8, 737-9, 737-900ER Series2025-08-28current
Aaxico Technical Services, INC.Piston Ring GTC0005151PTSGTC0005151The Boeing Company 787-92025-03-27current
Aviation Component SolutionsPiston Ring P007623179816-1The Boeing Company 737-8, 737-9, 757-300 Series2024-12-02current
Aviation Component SolutionsPiston Ring Set P005933175901-1Airbus SAS A300 Model F4- 605R2024-10-01current
Jet Parts Engineering INCPiston Ring 799803JP-1799803-1The Boeing Company 747-300 Series, 747-400 Series,...2024-03-26current
Airtomic - A Dover Company (Formerly Cook Airtomic)Piston Ring AIR23469Honeywell P/N3177905-1 wheninstalled in...The Boeing Company 777-200 Series, 777-300 Series,...2023-09-12current
Aviation Component SolutionsPiston Ring P007253169853-1The Boeing Company 737-82023-08-15current
Delta Flight ProductsPiston Ring 1058V0202DFP1058V0202Pratt & Whitney PW2037, PW 20402023-07-28current
Jet Parts Engineering INCPiston Ring 740369JP-24740369-24IAE V2500-A1, V2522-A5, V2524-A52023-07-27current
Airtomic - A Dover Company (Formerly Cook Airtomic)Piston Ring AIR22013700150-10 when installed on Sumitomo Starter...Airbus SAS A319 Model -131, A319 Model -132,...2023-07-17current
Airtomic - A Dover Company (Formerly Cook Airtomic)Piston Ring AIR22013700150-10 when installed on Sumitomo Starter...The Boeing Company MD-90-302023-07-17current
Airtomic - A Dover Company (Formerly Cook Airtomic)Piston Ring AIR22013700150-10 when installed on Sumitomo Starter...International Aero... V2500-A1, V2522-A5, V2524-A52023-07-17current
Wencor, LLCPiston Ring 3179509-1WE3179509-1CFM International CFM56-7B20E, CFM56-7B22E, CFM56-7B22E/B12023-06-27current
Wencor, LLCPiston Ring 3179509-1WE3179509-1General Electric Company CF34-10E2A1, CF34-10E7-B2023-06-27current
Delta Flight ProductsPiston Ring 1058V0202DFP1058V0202Airbus SAS A319/A320/321 All Series2023-06-12current
Jet Parts Engineering INCPiston Ring 740369-19NE740369-19The Boeing Company 767-200 Series, 767-300 Series,...2023-06-02current
Jet Parts Engineering INCPiston Ring 63000788JP-163000788-1The Boeing Company 737-92023-05-16current
Superior Air Parts INCPiston Ring SL78862 P01078862 P10Lycoming Engines O-235-F1, O-235-F1B, O-235 -F2A2022-12-06current
Superior Air Parts INCPiston Ring SL78862 P01078862 P10Lycoming Engines O-235-M2C, O-235-M3C, O-235-N2A2022-12-06current
Superior Air Parts INCPiston Ring SL78864 P01078864 P10Lycoming Engines O-235-F1, O-235-F1B, O-235 -F2A2022-12-06current
AirtomicPiston Ring Assembly AIR220165843387-101, with Control Valve Assembly...Boeing 747-400 Series, 747-400D Series,...2022-08-15current
Pma Sales LLCPiston Ring Set P5843387-101Parker5843387-101Boeing 747-200B Series, 747-300 Series,...2021-09-22current
Superior Air Parts INCPiston Ring 2nd Groove SA5004 P010642603P010 & 648006P010Continental... IO-550-A, -B, -C2021-05-26current
Superior Air Parts INCPiston Ring 2nd Groove SA5004 P010642603P010 & 648006P010Continental... IO-520-A, -B, -BA2021-05-26current
Superior Air Parts INCPiston Ring 2nd Groove SA5004 P015642603P015 & 648006P015Continental... IO-520-A, -B, -BA2021-05-26current
Superior Air Parts INCPiston Ring 2nd Groove SA5004 P005642603P005 & 648006P005Continental... IO-520-A, -B, -BA2021-05-26current
Jet Parts Engineering, LLC. (Jpe)Piston Ring, Set 3179387JP-23179387-2Boeing 777-200 Series, 777-300 Series2020-11-26current
Jet Parts Engineering, LLC. (Jpe)Piston Ring, Set 3179386JP-23179386-2Boeing 777-200 Series, 777-300 Series2020-11-26current
Jet Parts Engineering, LLC. (Jpe)PISTON RING 3750809JP-13750809-1Boeing 757-200 Series, 757-, 200PF Series2020-11-26current
Jet Parts Engineering, LLC. (Jpe)PISTON RING 3750806JP-13750806-1Boeing 757-200 Series, 757-, 200PF Series2020-11-26current
Jet Parts Engineering, LLC. (Jpe)PISTON RING 3750808JP-13750808-1Boeing 757-200 Series, 757-, 200PF Series2020-11-26current
Jet Parts Engineering, LLC. (Jpe)PISTON RING 3750807JP-13750807-1Boeing 757-200 Series, 757-, 200PF Series2020-11-26current
Jet Avion Corporation A Heico Aerospace CompanyPiston Ring M649-395-073-0CFM International P/N 649-395-073-0CFM International, S.A. CFM56-5A, CFM56-5B2020-10-07current
Superior Air Parts INCPiston Ring, Oil Control SA4001 P015639567 P15 & 639568 P15Continental... Continental(r)) (O-470-4, -7B, -112020-09-28current
Superior Air Parts INCPiston Ring, Oil Control SA4001 P005639567 P5 & 639568 P5Continental... Continental(r)) (O-470-4, -7B, -112020-09-28current
Superior Air Parts INCPiston Ring Top Groove SA4003 P015648009P015, 639566P015 & 649010P015Continental... E185-1, -3, -82020-07-06current
Superior Air Parts INCPiston Ring SA4709 P015627480P015 & 648012P015Continental... E185-1, -3, -82020-07-06current
Superior Air Parts INCPiston Ring SA4709 P005627480P005 & 648012P005Continental... E185-1, -3, -82020-07-06current
Superior Air Parts INCPiston Ring Top Groove SA4003 P005648009P005, 639566P005 & 649010P005Continental... E185-1, -3, -82020-07-06current
Superior Air Parts INCPiston Ring SA2000 P015638109P015Continental... Continental(r)) (C75-8, -8F, -8FH2020-07-05current
Superior Air Parts INCPiston Ring SA2000 P005638109P005Continental... Continental(r)) (C75-8, -8F, -8FH2020-07-05current
Superior Air Parts INCPiston Ring SA1000 P015638110P015Continental... Continental(r)) (C75-8, -8F, -8FH2020-06-30current
Superior Air Parts INCPiston Ring SA1000 P005638110P005Continental... Continental(r)) (C75-8, -8F, -8FH2020-06-30current
Continental Aerospace Technologies INCPiston Ring, Compression, 5.25 x .109 AEC648005PL (and oversize...648005Continental IO-346-A, B, IO-520-A2020-01-06current
Continental Aerospace Technologies INCPiston Ring, Compression AEC649632PL (and oversize...649632Continental C75-8, 8F, 8FH2020-01-06current
Continental Aerospace Technologies INCPiston Ring, Compression, 5.00 x .0955 AEC648009PL (and oversize...648009Continental E-165-2, 3, 42020-01-06current
Continental Aerospace Technologies INCPiston Ring, Chrome Top Compression AEF1942119421Franklin 6AS-335-A, 335-B, 6V-335- A1A2020-01-06current
Continental Aerospace Technologies INCPiston Ring, Compression AEL5400974673Lycoming O-320-no suffix, A1A, A1B2020-01-06current
Aviation Component SolutionsPiston Ring P0139163000788-1Boeing 737-400 Series, 737-800 Series,...2019-05-14current
Aero Fluid ProductsPiston Ring Set 7011-25-1Parker 5843387-101Boeing 747-200B Series, 747-300 Series,...2019-02-20current
AirtomicPiston Ring Assembly AIR23017Hamilton Sundstrand 814858-1 and 814858-3,...Boeing 777-232LR2018-08-16current
Wencor LLCPiston Ring 27080-15WE27080-15Airbus A300, A300 MODEL B2-1A, A300 MODEL B2-1C2017-11-19current
Wencor LLCPiston Ring 27080-10WE27080-10Airbus A300, A300 MODEL B2-1A, A300 MODEL B2-1C2017-11-19current
Wencor LLCPiston Ring 27080-4WE27080-4Boeing 707-100 Long Body, 707-100B...2017-11-19current
Wencor LLCPiston Ring 3179509-1WE3179509-1CFM INTERNATIONAL, S.A. CFM56-7B20, CFM56-7B20/2, CFM56-7B20/32017-08-31current
Continental Motors INCPiston Ring, Compression, 5.00 x .0955 AEC648009PL (and oversize...648009Continental E-165-2, 3, 42017-01-08current
Continental Motors INCPiston Ring, Compression, 5.25 x .109 AEC648005PL (and oversize...648005Continental IO-346-A, B IO-520-A, B2017-01-08current
Continental Motors INCPiston Ring, Compression AEC649632PL (and oversize...649632Continental C75-8, 8F, 8FH2017-01-08current
Continental Motors INCPiston Ring, Compression AEL5400974673Lycoming O-320-no suffix, A1A, A1B2017-01-08current
Continental Motors INCPiston Ring, Chrome Top Compression AEF1942119421Franklin 6AS-335-A, 335-B, 6V-335- A1A2017-01-08current
Extex Engineered Products INCPiston Ring, Split Seal 2.800 Inch OD E68890966889096Rolls-Royce 250-C30, C30G, C30G/22016-09-07current
Jet Avion Corporation A Heico Aerospace CompanyPiston Ring Set 63001090-1JAHoneywell P/N 63001090-1Boeing 737-300 Series, 737-400 Series,...2016-01-28current
Spirit Aerosystems INCPISTON RING 162T1526-1162T1526-1Boeing 767-200 SERIES, 767-300 SERIES,...2016-01-18current
AirtomicPiston Ring Set AIR21372Honeywell P/N 3176986-1, Piston Ring Set,...Boeing 737-300 Series, 737-400 Series,...2015-05-26current
AirtomicPiston Ring AIR21860-1Honeywell P/N 3172879-1, Piston Ring,...Boeing 737-300 Series, 737-400 Series,...2015-05-26current
AirtomicPiston Ring Set AIR21371Honeywell P/N 3176985-1, Piston Ring Set,...Boeing 737-300 Series, 737-400 Series,...2015-05-26current
Wencor LLCPiston Ring 27080-15WE27080-15BOEING MD-10-10F, MD-10-30F2015-05-05current
Wencor LLCPiston Ring 27080-10WE27080-10BOEING MD-10-10F, MD-10-30F2015-05-05current
Superior Air Parts INCPiston Ring, 5.125 X .155, Assembly SL73998AP/N 73998, P/N LW-13402, P/N 72454Lycoming Engines O-320-A1A, -A1B, -A2A2015-03-23current
Aviation Materials Management, INCPiston Ring 161A1160-1161A1160-1Boeing 737-600 Series, 737-700 Series,...2015-02-12current
Aviation Materials Management, INCPiston Ring 161A1164-1161A1164-1Boeing 737-600 Series, 737-700 Series,...2015-02-12current
Aviation Materials Management, INCPiston Ring 161A1160-1161A1160-1Boeing 737-600 Series, 737-700 Series,...2015-02-12current
Aviation Materials Management, INCPiston Ring 273A2104-1273A2104-1Boeing 737-600 Series, 737-700 Series,...2015-02-12current
Aviation Materials Management, INCPiston Ring 66-24109-366-24109-3Boeing 737-100 Series, 737-200 Series,...2015-02-12current
Aviation Materials Management, INCPiston Ring 66-24105-166-24105-1Boeing 737-100 Series, 737-200 Series2015-02-12current
Aviation Materials Management, INCPiston Ring 66-24105-366-24105-3Boeing 737-200 Series, 737-200C Series,...2015-02-12current
Aviation Materials Management, INCPiston Ring 161A1164-1161A1164-1Boeing 737-600 Series, 737-700 Series,...2015-02-12current
Aviation Materials Management, INC.Piston Ring 273A2104-1273A2104-1Boeing 737-600 Series, 737-700 Series,...2014-09-04current
Aviation Materials Management, INC.Piston Ring 161A1164-1161A1164-1Boeing 737-600 Series, 737-700 Series,...2014-09-04current
Aviation Materials Management, INC.Piston Ring 66-24105-166-24105-1Boeing 737-100 Series, 737-200 Series2014-09-04current
Aviation Materials Management, INC.Piston Ring 66-24105-366-24105-3Boeing 737-200 Series, 737-200C Series,...2014-09-04current
Aviation Materials Management, INC.Piston Ring 66-24109-366-24109-3Boeing 737-100 Series, 737-200 Series,...2014-09-04current
Aviation Materials Management, INC.Piston Ring 161A1160-1161A1160-1Boeing 737-600 Series, 737-700 Series,...2014-09-04current
Aviation Materials Management, INC.Piston Ring 161A1164-1161A1164-1Boeing 737-600 Series, 737-700 Series,...2014-09-04current
Aviation Materials Management, INC.Piston Ring 161A1160-1161A1160-1Boeing 737-600 Series, 737-700 Series,...2014-09-04current
Wencor LLCPiston Ring 27080-4WE27080-4BOEING DC-9-82 (MD-82), DC-9-83 (MD-83)2014-09-02current
Wencor LLCPiston Ring 3179509-1WE3179509-1GENERAL ELECTRIC COMPANY CF34-10E5, CF34-10E5A1, CF34-10E62014-08-11current
Precision Ring, INC.Piston Ring 974353-1PRGarrett Piston Ring P/N 974353-1 Applicable to...Boeing 747-200B Series 747-200F Series...2014-02-23current
Wencor LLCPiston Ring 3179509-1WE3179509-1CFM INTERNATIONAL, S.A. CFM56-7B20, CFM56-7B20/2, CFM56-7B20/32013-05-02current
Aviation Materials Management INCPiston Ring 66-24105-366-24105-3Boeing 737-200 Series, 737-200C Series,...2013-03-25current
Aviation Materials Management INCPiston Ring 161A1164-1161A1164-1Boeing 737-600 Series, 737-700 Series,...2013-03-24current
Aviation Materials Management INCPiston Ring 66-24109-366-24109-3Boeing 737-100 Series, 737-200 Series,...2013-02-27current
Aviation Materials Management INCPiston Ring 66-24105-166-24105-1Boeing 737-100 Series, 737-200 Series2013-02-27current
Aviation Materials Management INCPiston Ring 66-24105-366-24105-3Boeing 737-200 Series, 737-200C Series,...2013-02-27current
Aviation Materials Management INCPiston Ring 161A1160-1161A1160-1Boeing 737-600 Series, 737-700 Series,...2013-02-26current
Aviation Materials Management INCPiston Ring 161A1164-1161A1164-1Boeing 737-600 Series, 737-700 Series,...2013-02-26current
Aviation Materials Management INCPiston Ring 273A2104-1273A2104-1Boeing 737-600 Series, 737-700 Series,...2013-02-26current
Wencor LLCPiston Ring 3179509-1WE3179509-1CFM INTERNATIONAL, S.A. CFM56-7B20, CFM56-7B20/2, CFM56-7B20/32013-02-26current
Wencor LLCPiston Ring 3181236-1WE3181236-1Airbus A340-500 Series, Models A340-541,...2012-10-25current
Pma Sales LLCPiston Ring Set P5843387-101Parker 5843387-101Boeing 747-200B Series, -300 Series, -400 Series2012-10-14current
Airtomic - A Dover Company (Formerly Cook Airtomic)Piston Ring AIR 12149Fairchild part no. 203138-1 When installed in...Boeing 747-100 Series, 747-200B Series,...2012-10-04current
Airtomic - A Dover Company (Formerly Cook Airtomic)Piston Ring AIR23929Honeywell P/N 859989-47, Piston Ring,...Embraer EMB-120) Israel Aircraft...2012-10-04current
Airtomic - A Dover Company (Formerly Cook Airtomic)Piston Ring AIR23469-1Honeywell P/N 3163268-8, Piston Ring,...Bombardier CL-600-2B19 (Regional Jet Series 100 & 440)2012-10-04current
Airtomic - A Dover Company (Formerly Cook Airtomic)Piston Ring AIR21875N-1Honeywell P/N 690200-3, Piston Ring, installed...Bombardier CL-600-2B19 (Regional Jet Series 100 &440)2012-10-04current
Airtomic - A Dover Company (Formerly Cook Airtomic)Piston Ring Assembly AIR23017-1Honeywell P/N 118334-3 When installed in...General Electric CF6-80C2A1, CF6-80C2A2, CF6-80C2A32012-10-04current
Jet Parts Engineering INCPiston Ring Set 3179387JP-33179387-3Boeing 777-200, -200LR, -3002012-08-23current
Jet Parts Engineering INCPiston Ring Set 3179386JP-33179386-3Boeing 777-200, -200LR, -3002012-08-23current
Jet Parts Engineering INCPiston Ring, Set 3179387JP-23179387-2Boeing 777F Series2012-05-15current
Jet Parts Engineering INCPiston Ring Set 808463JP-1808463-1Boeing 777-300 Series2012-05-15current
Jet Parts Engineering INCPiston Ring Set 808463JP-2808463-2Boeing 777-300 Series2012-05-15current
Jet Parts Engineering INCPiston Ring, Set 3179386JP-23179386-2Boeing 777F Series2012-05-15current
Jet Parts Engineering, INC. (Jpe)PISTON RING 3750807JP-13750807-1Boeing 757-200 Series, 757-200PF Series,...2011-11-15current
Jet Parts Engineering, INC. (Jpe)PISTON RING 3750808JP-13750808-1Boeing 757-200 Series, 757-200PF Series,...2011-11-15current
Jet Parts Engineering, INC. (Jpe)Piston Ring, Set 3179387JP-23179387-2Boeing 777-200 Series, 777-300 Series2011-11-15current
Jet Parts Engineering, INC. (Jpe)Piston Ring, Set 3179386JP-23179386-2Boeing 777-200 Series, 777-300 Series2011-11-15current
Jet Parts Engineering, INC. (Jpe)PISTON RING 3750806JP-13750806-1Boeing 757-200 Series, 757-200PF Series,...2011-11-15current
Jet Parts Engineering, INC. (Jpe)PISTON RING 3750809JP-13750809-1Boeing 757-200 Series, 757-200PF Series,...2011-11-15current
Airtomic - A Dover Company (Formerly Cook Airtomic)Piston Ring AIR23929Honeywell P/N 859989-47, Piston Ring,...Embraer EMB-120) Israel Aircraft...2011-09-07current
Airtomic - A Dover Company (Formerly Cook Airtomic)Piston Ring Assembly AIR23017-1Honeywell P/N 118334-3 When installed in...General Electric CF6-80C2A1, CF6-80C2A2, CF6-80C2A32011-09-07current
Airtomic - A Dover Company (Formerly Cook Airtomic)Piston Ring AIR 12149Fairchild part no. 203138-1 When installed in...Boeing 747-100 Series, 747-200B Series,...2011-09-07current
Airtomic - A Dover Company (Formerly Cook Airtomic)Piston Ring AIR21875N-1Honeywell P/N 690200-3, Piston Ring, installed...Bombardier CL-600-2B19 (Regional Jet Series 100 &440)2011-09-07current
Airtomic - A Dover Company (Formerly Cook Airtomic)Piston Ring AIR23469-1Honeywell P/N 3163268-8, Piston Ring,...Bombardier CL-600-2B19 (Regional Jet Series 100 & 440)2011-09-07current
Superior Air Parts INCPiston Ring 2nd Groove SA5004 P15642603 P15 & 648006 P15Continental IO-520-A, -B, -BA2011-04-14current
Superior Air Parts INCPiston Ring 2nd Groove SA5004 P10642603 P10 & 648006 P10Continental IO-520-A, -B, -BA2011-04-14current
Superior Air Parts INCPiston Ring 2nd Groove SA5004 P05642603 P05 & 648006 P05Continental IO-520-A, -B, -BA2011-04-14current
Superior Air Parts INCPiston Ring 2nd Groove SA5004642603 & 648006Continental IO-520-A, -B, -BA2011-04-14current
Superior Air Parts INCPiston Ring Top Groove SA4003+.015648009 P15, 639566 P15 & 649010 P15Continental E185-1, -3, -82011-04-14current
Superior Air Parts INCPiston Ring, Oil Control SA4001639567 & 639568Continental O-470-A, -B, -E2011-04-14current
Superior Air Parts INCPiston Ring Top Groove SA4003648009, 639566 & 649010Continental E185-1, -3, -82011-04-14current
Superior Air Parts INCPiston Ring SA4709 P15627480 P10& 648012 P10Continental E185-1, -3, -82011-04-14current
Superior Air Parts INCPiston Ring, Oil Control SA4001 P005639567 P5 & 639568 P5Continental O-470-A, -B, -E2011-04-14current
Superior Air Parts INCPiston Ring Top Groove SA4003+.005648009 P5, 639566 P5 & 649010 P5Continental E185-1, -3, -82011-04-14current
Superior Air Parts INCPiston Ring SA4709627480 & 648012Continental E185-1, -3, -82011-04-14current
Superior Air Parts INCPiston Ring, Oil Control SA4001 P.015639567 P15 & 639568 P15Continental O-470-A, -B, -E2011-04-14current
Superior Air Parts INCPiston Ring SA4709 P05627480 P05 & 648012 P05Continental E185-1, -3, -82011-04-14current
Superior Air Parts INCPiston Ring Top Groove SA5001 +.005630752 P05Continental IO-520-M TSIO-520-M, -N, -P2011-04-13current
Superior Air Parts INCPiston Ring Top Groove SA5001630752Continental IO-520-M TSIO-520-M, -N, -P2011-04-13current
Superior Air Parts INCPiston Ring Top Groove SA5001 +.015630752 P15Continental IO-520-M TSIO-520-M, -N, -P2011-04-13current
Superior Air Parts INCPiston Ring SA5002 P010630753 P10Continental IO-520-M TSIO-520-M, -N, -P2011-04-13current
Superior Air Parts INCPiston Ring SA5002630753Continental IO-520-M TSIO-520-M, -N, -P2011-04-13current
Superior Air Parts INCPiston Ring SA5002 P005630753 P05Continental IO-520-M TSIO-520-M, -N, -P2011-04-13current
Superior Air Parts INCPiston Ring SA5002 P015630753 P15Continental IO-520-M TSIO-520-M, -N, -P2011-04-13current
Superior Air Parts INCPiston Ring SL78862 P1078862 P10Lycoming Engines O-235-F1, -F1B, -F2A2011-04-03current
Superior Air Parts INCPiston Ring SL7886278862Lycoming Engines O-235-F1, -F1B, -F2A2011-04-03current

The first 150 of 400.

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.