The U.S. aircraft register, updated daily
Parts

Hydraulic Unit

No failure report names the hydraulic unit. 6 FAA approvals let 4 companies make a replacement hydraulic unit, B/E Aerospace INC. holding the most (2).

Approved replacement parts 6 parts manufacturer approvals

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

For these models most: Airbus A350 (4), Dehavilland DHC-8 (1), Bombardier DHC-8 Dash 8 and Q400 (1).

MakerPartReplacesFitsGrantedStatus
B/E Aerospace INCHYDRAULIC UNIT ASSEMBLY 4013207-0104013207-010Airbus A350-9412021-02-18current
B/E Aerospace INCHydraulic Unit Assembly 4013207-0144013207-014Airbus SAS A350-941, A350-10412020-12-01current
B/E Aerospace INC.Hydraulic Unit Assembly 4013207-0144013207-014Airbus A350-1041, A350-9412019-05-23current
B/E Aerospace INC.Hydraulic Unit Assembly 4013207-0104013207-010Airbus A350-9412015-11-05current
Tactair Fluid Controls INCHydraulic Unit and all Bill Of Material Items 54C54634-9De Haviland, Inc. 8SC0105Bombardier, Inc. DHC-8 Series 100, 3002002-07-25current
Kaiser Fluid TechnologiesHydraulic Unit 54C54634-9de Haviland, Inc. 8SC0105deHavilland DHC-8 Series 100, 3001995-11-07current

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.