Motor Op
No failure report names the motor op. 14 FAA approvals let 3 companies make a replacement motor op, Circor Aerospace, INC. holding the most (10).
Approved replacement parts 14 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a motor op and sell it as an approved part for the models named. These are the companies holding such approvals for a motor op:
For these models most: Boeing 757 (9), Boeing 767 (8), Boeing 737 (8), Boeing 747 (3), Boeing 777 (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Circor Aerospace, INC. | Motor OP Valve EM91-80-1 | S270T010-4 | Boeing 757-200, 767-200, -300 | 2015-05-03 | current |
| Circor Aerospace, INC. | Motor OP Valve EM95-6-1 | S274U010-4 | Boeing 747-100, 200, 300 | 2015-05-03 | current |
| Circor Aerospace, INC. | Motor OP Valve EM91-79-1 | S270T010-5 | Boeing 737-300, -400, -500 | 2015-05-03 | current |
| Circor Aerospace, INC. | Motor OP Valve EM91-79-3 | S270T010-8 | Boeing 737-300 Series, 737-500 Series,... | 2015-05-03 | current |
| Circor Aerospace, INC. | Motor OP Valve MC99-43-1 | S274U010-3 | Boeing 747-100, 200, 300 | 2015-05-03 | current |
| Circor Aerospace, INC. | Motor OP Valve EM56-20-3 | S270T010-9 | Boeing 737-400 Series | 2015-05-03 | current |
| Circor Aerospace, INC. | Motor OP Valve EM56-20-3 | S270T010-9 | Boeing 737-300 Series, 737-500 Series,... | 2015-05-03 | current |
| Circor Aerospace, INC. | Motor OP Valve EM56-20-1 | S270T010-6 | Boeing 737-300, -400, -500 767-200 | 2015-05-03 | current |
| Circor Aerospace, INC. | Motor OP Valve EM91-80-3 | S270T010-7 | Boeing 757-200 Series, 767-300 Series | 2015-05-03 | current |
| Circor Aerospace, INC. | Motor OP Valve EM91-79-3 | S270T010-8 | Boeing 737-400 Series, 737-600, 737-700 | 2015-05-03 | current |
| Parker Hannifin CORP | Motor Op Valve 2960035-101 | S271W741-2 | Boeing 777F Series | 2009-05-18 | current |
| Circle Seal Controls INC | Motor OP Valve EM91-79-3 | Boeing S270T010-8 | Boeing 737-300 Series, 737-500 Series,... | 1999-01-03 | current |
| Circle Seal Controls INC | Motor OP Valve EM56-20-3 | Boeing S270T010-9 | Boeing 737-300 Series, 737-500 Series,... | 1999-01-03 | current |
| Circle Seal Controls INC | Motor OP Valve EM91-80-3 | Boeing S270T010-7 | Boeing 757-200 Series, 767-300 Series | 1998-10-18 | current |
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.