The U.S. aircraft register, updated daily
Parts · Airframe structure

Cotter Pin

58 failure reports named the cotter pin in the last ten years, 124 since 1995, most often on the Boeing 737; the condition most often found was "missing". 42 FAA approvals let 12 companies make a replacement cotter pin, Consolidated Fuel Systems INC holding the most (11).

Reports by year

048111519952001200920152020202552026
Reports by year, as a table
reports
19952
19962
19973
19983
19991
20012
200212
20032
20072
20084
20091
20114
20128
201315
20143
20152
20164
20174
20183
201912
20207
20212
20222
20233
202410
20256
20265

Which system the reports file it under last ten years

Airframe structure34Cabin, seats and restraints8Landing gear6Flight controls5Engine2Other and general1Propeller1Rotorcraft systems1
Reports by system, as a table
reports
Airframe structure34
Cabin, seats and restraints8
Landing gear6
Flight controls5
Engine2
Other and general1
Propeller1
Rotorcraft systems1

Models most often reporting it last ten years

Boeing 73722Bombardier CL-600 Challenger and CRJ13Airbus A3213Boeing 7172Boeing 7572Cessna 4022Mcdonnell Douglas MD-112Air Tractor Inc AT-5021Airbus Helicopters EC-135 now H1351Airbus A3191Beechcraft 35 Bonanza and Debonair1Cessna 560 Citation V, Ultra, Encore and Excel1
Models most reported, as a table
reports
Boeing 73722
Bombardier CL-600 Challenger and CRJ13
Airbus A3213
Boeing 7172
Boeing 7572
Cessna 4022
Mcdonnell Douglas MD-112
Air Tractor Inc AT-5021
Airbus Helicopters EC-135 now H1351
Airbus A3191
Beechcraft 35 Bonanza and Debonair1
Cessna 560 Citation V, Ultra, Encore and Excel1

How it failed the condition found, last ten years

missing27corroded11out of position6broken3loose3unsecure2defective1deformed1detached1disengaged1
Conditions found, as a table
reports
missing27
corroded11
out of position6
broken3
loose3
unsecure2
defective1
deformed1
detached1
disengaged1

Engines most often reporting it

Continental TSIO-360-EB 1Continental TSIO-360-LB 1

Approved replacement parts 42 parts manufacturer approvals

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

Consolidated Fuel Systems INC 11Hartzell Engine Technologies LLC 9Kelly Aerospace Power Systems, INC. 7Kelly Aerospace Energy Systems LLC 5Superior Air Parts INC 2Pl Porter Controls INC 2Western Filter A Division of Donalson Company INC 1Precision Airmotive LLC 1Hydro-Aire Incorporated 1Hutchinson Aerospace & Industry INC 1Donaldson Company INC 1Aero Accessories INC 1

For these models most: Boeing 747 (3), Northrop C-125 (2).

MakerPartReplacesFitsGrantedStatus
Donaldson Company INCCotter Pin 137080SP90G16Rolls-Royce... RB211-22B-02, RB211-22B-02 (MOD...2025-05-23current
Hartzell Engine Technologies LLCCotter Pin AM-2556M2556Continental... A-50-1, A-50-4, A-50-52024-05-20current
Hartzell Engine Technologies LLCCotter Pin AM-2556M2556Continental Motors Inc A-40, A-40-2, A-40-32024-05-20current
Hartzell Engine Technologies LLCCotter Pin AM-2556M2556Lycoming Division... O-290-D, O-290-D2, O-290-D2A2024-05-20current
Hartzell Engine Technologies LLCCotter Pin AM-2556M2556Lycoming Engines O-235-C1, O-235-C1A, O-235-C1B2024-05-20current
Hartzell Engine Technologies LLCCotter Pin AB-90751-19Continental 10-90751-19Continental... A-50-1, -2, -32023-12-08current
Hartzell Engine Technologies LLCCotter Pin AB-90751-19Continental 10-90751-19Franklin Engine Company 6A4-150-B3, -B4, -B312023-12-08current
Hartzell Engine Technologies LLCCotter Pin AB-90751-19Continental 10-90751-19Lycoming Engines O-235-C1, -C1A, -C1B2023-12-08current
Hartzell Engine Technologies LLCCotter Pin AB-90751-18Continental 10-90751-18Lycoming Engines O-235-C1, -C1A, -C1B2023-12-08current
Hartzell Engine Technologies LLCCotter Pin AB-90751-18Continental 10-90751-18Continental... O-200-A, -B, -C2023-12-08current
Superior Air Parts INCCotter Pin SL-STD-761STD-761Lycoming Engines O-235-C1C, -C2C, -H2C2021-05-10current
Hutchinson Aerospace & Industry INCCOTTER PIN MB11359MB11359Viking Air Ltd DHC-32017-05-24current
Precision Airmotive LLCCotter Pin CF2500Make Continental Motors, Part No. 2500Continental TSIO-360-RB, -SB, TSIO-520-G2016-06-15current
Kelly Aerospace Energy Systems LLCCotter Pin ES10-90751-18Continental Motors P/N 10-90751-18Continental Motors A-65, -75, C-75-82015-05-14current
Kelly Aerospace Energy Systems LLCCotter Pin AM-2556Champion Aerospace/Unison/ Slick P/N M2556Continental Motors A-65, -75, C-75-82015-05-14current
Kelly Aerospace Energy Systems LLCCotter Pin AB-90751-18Continental Motors P/N 10-90751-18Continental Motors Series, O200, IO-4702015-05-14current
Kelly Aerospace Energy Systems LLCCotter Pin AB-90751-19Continental Motors P/N 10-90751-19Continental Motors Series, A-50, A-652015-05-14current
Kelly Aerospace Energy Systems LLCCotter Pin ES10-90751-19Continental Motors P/N 10-90751-19Continental Motors A-65, A-75, C-75-82015-05-14current
Western Filter A Division of Donalson Company INCCotter Pin 137080SP90G16Rolls-Royce plc RB211-22B-02, -22B(MOD 72-8700), -22C-022012-07-17current
Kelly Aerospace Power Systems, INC.Cotter Pin SC82-14Precision Airmotive Facet/Marvel-Schebler...Teledyne Continental A-50 Series A-65 Series A-75 Series...2009-04-06current
Kelly Aerospace Power Systems, INC.Cotter Pin CF82-11Facet Aerospace Products Company 82-11Teledyne Continental A-50 Series A-65 Series A-75 Series...2009-04-06current
Kelly Aerospace Power Systems, INC.Cotter Pin SC901209-K1Precision Airmotive Facet/Marvel-Schebler...Textron Lycoming AEIO-320 Series AEIO-360 Series...2009-04-06current
Kelly Aerospace Power Systems, INC.Cotter Pin CF82-14Facet Aerospace Products Company 82-14Teledyne Continental A-50 Series A-65 Series A-75 Series...2009-04-06current
Kelly Aerospace Power Systems, INC.Cotter Pin SC82-1Precision Airmotive Facet/Marvel-Schebler 82-1...Teledyne Continental A-50 Series A-65 Series A-75 Series...2009-04-06current
Kelly Aerospace Power Systems, INC.Cotter Pin CF82-1Facet Aerospace Products Company 82-1Lycoming O-360 Series Except F1A6, G1A6, C1F2009-04-06current
Kelly Aerospace Power Systems, INC.Cotter Pin SC82-11Precision Airmotive Facet/Marvel-Schebler...Teledyne Continental A-50 Series A-65 Series A-75 Series...2009-04-06current
Hydro-Aire IncorporatedCotter Pin PS38042-00PS38042-00Boeing 747-400 Series2007-12-02current
Pl Porter Controls INCCotter Pin PS38042-00PS38042-00Boeing 747-400 Series2005-10-19current
Pl Porter Controls INCCotter Pin PS38042-00PS38042-00Boeing 747-400 Series2005-06-23current
Aero Accessories INCCotter Pin P/N AM2540Slick P/N M2540 and M2556Avco Lycoming Replacement for Slick P/N M2540 and...1996-07-28current
Consolidated Fuel Systems INCCotter Pin SC901200Precision Airmotive Facet/Marvel-Schebler...Textron Lycoming Replacement part for Precision...1996-05-23current
Consolidated Fuel Systems INCCotter Pin SC901209-K1Precision Airmotive Facet/Marvel-Schebler...Textron Lycoming Replacement part for Precision...1996-05-23current
Consolidated Fuel Systems INCCotter Pin SC82-11Precision Airmotive Facet/Marvel-Schebler...Franklin Engine Co. Replacement part for Precision...1996-05-05current
Consolidated Fuel Systems INCCotter Pin SC82-1Precision Airmotive Facet/Marvel-Schebler 82-1...Franklin Engine Co. Replacement part for Precision...1996-05-05current
Consolidated Fuel Systems INCCotter Pin SC82-14Precision Airmotive Facet/Marvel-Schebler...Franklin Engine Co. Replacement part for Precision...1996-05-05current
Consolidated Fuel Systems INCCotter Pin CF82-11Facet Marvel-Schebler 82-11Franklin Engine Co. Lycoming, Continental, and Franklin engines1992-06-17current
Consolidated Fuel Systems INCCotter Pin CF82-14Facet Marvel-Schebler 82-14Franklin Engine Co. Lycoming, Continental, and Franklin engines1992-06-17current
Consolidated Fuel Systems INCCotter Pin CF82-1Facet Marvel-Schebler 82-1Franklin Engine Co. Lycoming, Continental, and Franklin engines1992-06-17current
Consolidated Fuel Systems INCCotter Pin CF82-11Facet Aerospace Prod. Marvel/Schebler (Facet) 82-11Franklin Engine Co. when installed on Lycoming,...1990-02-25current
Consolidated Fuel Systems INCCotter Pin CF82-14Facet Aerospace Prod. Marvel/Schebler (Facet) 82-14Franklin Engine Co. when installed on Lycoming,...1990-02-25current
Consolidated Fuel Systems INCCotter Pin CF82-1Facet Aerospace Prod. Marvel/Schebler (Facet) 82-1Franklin Engine Co. when installed on Lycoming,...1990-02-25current
Superior Air Parts INCCotter Pin STD-761Avco Lycoming STD-761Avco Lycoming,... 0-235-ClC, C2C, H2C1984-12-17current

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.