The U.S. aircraft register, updated daily
Parts

Controllable Pump

No failure report names the controllable pump. 8 FAA approvals let 2 companies make a replacement controllable pump, Serv-Aero Engineering INC holding the most (6).

Approved replacement parts 8 parts manufacturer approvals

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

For these models most: Weatherly 201 (4), Weatherly Aviation Co Inc 620 (4), Air Tractor Inc AT-802 (4), Air Tractor Inc AT-602 (4), Air Tractor Inc AT-502 (4), Air Tractor Inc AT-402 (4), Air Tractor Inc AT-401 (4), Air Tractor Inc AT-400 (4), Thrush Aircraft Inc S-2 (2), Ayres Corporation S-2 (2).

MakerPartReplacesFitsGrantedStatus
Serv-Aero Engineering INCControllable Pump Fan F100ABF200/ F200ABWeatherly 201A, B & C, 6202006-09-13current
Serv-Aero Engineering INCControllable Pump Fan F200F200Air Tractor AT-250, AT-300/301, AT-400/ 400A2006-09-13current
Serv-Aero Engineering INCControllable Pump Fan F200ABF200/ F200ABWeatherly 201A, B & C, 6202006-09-13current
Serv-Aero Engineering INCControllable Pump Fan F100AAF100AA/ F100ABWeatherly 201A, B & C, 6202006-09-13current
Serv-Aero Engineering INCControllable Pump Fan F100AAF100AAAir Tractor AT-250, AT-300/301, AT-400/ 400A2006-09-13current
Serv-Aero Engineering INCControllable Pump Fan F200F100AA/ F100ABWeatherly 201A, B & C, 6202006-09-13current
Weath-Aero CompanyControllable Pump Fan F100AAF100AAAir Tractor AT-300/301, AT-400/400A, AT-2501999-10-31current
Weath-Aero CompanyControllable Pump Fan F200F200Air Tractor AT-300/301, AT-400/400A, AT-2501999-10-31current

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.