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

Pinion

13 failure reports named the pinion in the last ten years, 32 since 1996, most often on the Airbus BD-500; the condition most often found was "corroded". 32 FAA approvals let 13 companies make a replacement pinion, Moog INC holding the most (7). The reports call it "pinion", "pinion assy", "pinion assembly".

Reports by year

0245719962015202512026
Reports by year, as a table
reports
19965
19977
19983
20122
20131
20151
20161
20191
20211
20245
20254
20261

Which system the reports file it under last ten years

Airframe structure11Flight controls1Landing gear1
Reports by system, as a table
reports
Airframe structure11
Flight controls1
Landing gear1

Models most often reporting it last ten years

Airbus BD-5008Beechcraft F901Boeing 787 Dreamliner1Embraer EMB-505 Phenom 3001Embraer ERJ 190 E190 and E1951
Models most reported, as a table
reports
Airbus BD-5008
Beechcraft F901
Boeing 787 Dreamliner1
Embraer EMB-505 Phenom 3001
Embraer ERJ 190 E190 and E1951

How it failed the condition found, last ten years

corroded11cracked1defective1
Conditions found, as a table
reports
corroded11
cracked1
defective1

Engines most often reporting it

Pratt & Whitney PT6A series 1

Approved replacement parts 32 parts manufacturer approvals

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

Moog INC 7Moog Aircraft Group 6Soundair Aviation Services 5Pacific Sky Supply INC 3Scott'S-Bell 47 INC. 2Pacific Propeller INC 2Wencor West INC 1Wencor LLC 1Superior Air Parts INC 1Kenmore Air Harbor LLC 1Jet Parts Engineering INC 1Aviation Facilities INC 1Aircraft Component Design LLC 1

For these models most: Boeing 787 Dreamliner (13), Boeing 737 (5), Boeing 777 (2), Boeing 747 (2), Bell 47 (2), Airbus A330 (2), Mcdonnell Douglas MD-11 (1), Embraer ERJ 190 E190 and E195 (1), Embraer ERJ 170 E170 and E175 (1), Dehavilland DHC-2 (1), Dassault FALCON 7 (1), Boeing 767 (1).

MakerPartReplacesFitsGrantedStatus
Soundair Aviation ServicesPINION SP3812-33-31304100073-001The Boeing Company 737-700 Series, 737-600 Series,...2026-07-16current
Soundair Aviation ServicesPINION SP3812-33-31304100073-001The Boeing Company 737-8, 737-92026-03-16current
Kenmore Air Harbor LLCPinion, Elevator Trim Control KAC2CF953C2-CF-953AViking Air Limited DHC-2 Mk. I, DHC-2 Mk. II, DHC-2 Mk. III2025-04-03current
Soundair Aviation ServicesPinion SP3812-33-31304100073-001Dassault Aviation FALCON 7X2021-06-24current
Soundair Aviation ServicesPinion SP3812-33-31304100073-001Boeing 737-800 Series737-900ER Series2021-06-24current
Soundair Aviation ServicesPinion SP3832-02-3A16079000-042Boeing 737-600 Series, 737-700 Series,...2019-03-20current
Aircraft Component Design LLCPinion, Bevel, Accessory Drive Gearbox 5001T64P01ACD5001T64P01General Electric CT58-140-1, CT58-140-22015-12-30current
Moog INCPinion - Slats 40B, 41B, & 50B P684A4101-00P684A4101-00Boeing 787-8, 787-92014-09-01current
Moog INCPinion - Slat 1 Outboard P684A1001-00P684A1001-00Boeing 787-8, 787-92014-09-01current
Moog INCPinion - Slats 20B, 21B, 30B, 31B & 51B P684A2001-00P684A2001-00Boeing 787-8, 787-92014-09-01current
Moog INCPinion - Slat 1 Inboard P684A1101-00P684A1101-00Boeing 787-8, 787-92014-09-01current
Moog INCPinion - Slat 6 Inboard P684A6101-01P684A6101-01Boeing 787-8, 787-92014-09-01current
Moog INCPinion - Slat 6 Outboard P684A6001-01P684A6001-01Boeing 787-8, 787-92014-09-01current
Moog INCPinion Assy Kit - Slat 1 Inboard 787-9 High Lift CB05482-001CB05482-001Boeing 787-8, 787-92014-08-18current
Moog Aircraft GroupPinion Assy P684A2001-00P684A2001-00Boeing 787-82011-11-07current
Moog Aircraft GroupPinion Assy P684A6001-01P684A6001-01Boeing 787-82011-11-07current
Moog Aircraft GroupPinion Assy P684A1101-00P684A1101-00Boeing 787-82011-11-07current
Moog Aircraft GroupPinion Assy P684A4101-00P684A4101-00Boeing 787-82011-11-07current
Moog Aircraft GroupPinion Assy P684A6101-01P684A6101-01Boeing 787-82011-11-07current
Moog Aircraft GroupPinion Assy P684A1001-00P684A1001-00Boeing 787-82011-11-07current
Scott'S-Bell 47 INC.Pinion SB47-620-946-003Bell Helicopter P/N 47-620-946-3Scott's-Bell 47 47G-3B-2, 47G-4A2011-08-08current
Scott'S-Bell 47 INC.Pinion SB47-620-946-001Bell Helicopter P/N 47-620-946-1Scott's-Bell 47 47G-3B-2, 47G-4A2011-08-08current
Jet Parts Engineering INCPinion - Spur Gear 3231785JP-33231785-3CFM International, S.E. CFM56-2 CFM56-2A CFM56-2B CFM56-3...2011-01-19current
Wencor LLCPinion, Rotor 799817-2WE799817-2Airbus A300-600 A300, Model B4-601 A300,...2010-02-02current
Pacific Propeller INCPinion, Feedback Shaft 65262306526230Pacific Propeller Aeroproducts A6441FN 606/606A2005-06-27current
Wencor West INCPinion, Rotor 799817-2WE799817-2Airbus A330-200 & -300 series, 747-400,...2004-11-09current
Pacific Propeller INCPinion, Feedback Shaft 65262306526230Pacific Propeller Aeroproducts A6441FN 606/606A2001-09-13current
Aviation Facilities INCPinion 350581 AFIAllied Signal, Inc. 350581Boeing 707, 720, 7271996-11-07current
Pacific Sky Supply INCPinion - Feedback 519752PHamilton Standard 519752Hamilton Standard Division 54H60-91 and -1171994-07-27current
Pacific Sky Supply INCPinion, Shutter Drive 6519792PAllison 6519792Pacific Propeller A6441FN6061994-05-31current
Pacific Sky Supply INCPinion - Feedback Shaft 6526230PAllison 6526230Pacific Propeller A6441FN6061993-10-31current
Superior Air Parts INCPinion SP84685P&W 84685Pratt & Whitney Double Wasp CA3, CA18, CB31993-09-26current

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.