The U.S. aircraft register, updated daily
Parts · Heating, ice protection and utility systems

Hydraulic System

346 failure reports named the hydraulic system in the last ten years, 886 since 1995, most often on the Boeing 737; the condition most often found was "leaking". 26 FAA approvals let 7 companies make a replacement hydraulic system, Airborne Maintenance & Engineering Services holding the most (12).

Reports by year

015304560199520012006201120162021422026
Reports by year, as a table
reports
19951
19961
19973
19986
200018
200133
200227
200317
200431
200539
200660
200744
200848
200923
201030
201132
201225
201343
201436
201523
201626
201737
201830
201918
202020
202131
202230
202313
202455
202544
202642

How it failed the condition found, last ten years

leaking81low58failed36low pressure26overserviced23malfunctioned21faulted14warning message14contaminated13unknown7
Conditions found, as a table
reports
leaking81
low58
failed36
low pressure26
overserviced23
malfunctioned21
faulted14
warning message14
contaminated13
unknown7

Engines most often reporting it

Approved replacement parts 26 parts manufacturer approvals

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

For these models most: Boeing 737 (12), Boeing 727 (4), Bell 412 (4), Piper PA-46 Malibu, Mirage, Matrix and M-Class (2), Piper PA-31 Navajo and Chieftain (1), Mcdonnell Douglas MD-11 (1), Dassault FALCON 7 (1), Airbus A321 (1), Airbus A320 (1).

MakerPartReplacesFitsGrantedStatus
Rsg Products INCHydraulic System Modification 01BL229160002-0101BL229160002-01Bell Textron Inc 412EP2024-08-14current
Rsg Products INCHydraulic System Modification 01BL229160001-0101BL229160001-01Bell Textron Inc 412EP2024-08-14current
Mra Systems, LLCHydraulic System Installation Kit 612C3400-079612C3400-079Airbus SAS A320-252N, A320-253N, A321-251N2024-01-09current
Airborne Maintenance & Engineering ServicesHYDRAULIC SYSTEM INSTL (B737-700) 0370-29-0000-90370-29-0000-9Boeing 737-7002022-07-11current
Airborne Maintenance & Engineering ServicesHydraulic System Install (B737-400) 007-00817-79007-00817-79Boeing 737-4002022-07-11current
Airborne Maintenance & Engineering ServicesHydraulic System Install (B737-300) 007-00817-69007-00817-69Boeing 737-3002022-07-11current
Airborne Maintenance & Engineering ServicesHydraulic System Install - WW FR Config 007-00800-59007-00800-59Boeing 737-200/3002022-07-11current
Airborne Maintenance & Engineering ServicesHydraulic System Install (B737-400 / Stainless Steel Fittings) 007-00817-89007-00817-89Boeing 737-4002022-07-11current
Airborne Maintenance & Engineering ServicesHydraulic System Install, Fuselage - Tail Config 007-00800-29007-00800-29Boeing 737-200/3002022-07-11current
Airborne Maintenance & Engineering ServicesHYDRAULIC SYSTEM INSTL (B737-700) 0370-29-0000-90370-29-0000-9Boeing 737-7002022-07-11current
Airborne Maintenance & Engineering ServicesHydraulic System Schematic With 3 Way 2pos 007-00820-9007-00820-9Boeing 737-200/3002022-07-11current
Airborne Maintenance & Engineering ServicesHydraulic System Schematic With 3 Way 2pos 007-00820-19007-00820-19Boeing 737-200/3002022-07-11current
Airborne Maintenance & Engineering ServicesHydraulic System Installation - Tail Config 007-00800-9007-00800-9Boeing 737-200/3002022-07-11current
Airborne Maintenance & Engineering ServicesHydraulic System Install - WW Config 007-00800-49007-00800-49Boeing 737-200/3002022-07-11current
Airborne Maintenance & Engineering ServicesHydraulic System Install 007-00817-59007-00817-59Boeing 737-300/4002022-07-11current
Rsg Products INCHydraulic System Modification 01BL229160002-0101BL229160002-01Bell 412EP2020-10-07current
Rsg Products INCHydraulic System Modification 01BL229160001-0101BL229160001-01Bell 412EP2020-10-07current
Parker Hannifin CORPHydraulic System Control Board 910364-3910364-3Dassault Falcon 7X2011-08-09current
Honeywell International INCHydraulic System Controller 4059021-901Douglas 4059021-901McDonnell Douglas MD-11, -11F1991-05-30current
Tactair Fluid Controls INCHydraulic System 1143-A1130-Piper PA-46-350P T.C.D.S. A25S01989-02-09current
Tactair Fluid Controls INCHydraulic System 1143-1-A1130-Piper PA-46-310P T.C.D.S. A25S01989-02-09current
Tactair Fluid Controls INCHydraulic System 1143-A0610-Piper PA-31.-31T -31T3, -31-350, -42-7201989-02-09current
Simmonds Precision Products INC Goodrich Sensors and Integrated Systems - VtHydraulic System Tank Unit Simmonds P/N EA1065A-2406,...-Boeing 7271982-01-05current
Simmonds Precision Products INC Goodrich Sensors and Integrated Systems - VtHydraulic System Tank Unit Simmonds P/N EA1093A-2408,...-Boeing 7271982-01-05current
Simmonds Precision Products INC Goodrich Sensors and Integrated Systems - VtHydraulic System Tank Unit Simmonds P/N EA1065A-2721,...-Boeing 7271982-01-05current
Simmonds Precision Products INC Goodrich Sensors and Integrated Systems - VtHydraulic System Tank Unit Simmonds P/N EA1065A-2371,...-Boeing 7271982-01-05current

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.