Switch Differential
No failure report names the switch differential. 5 FAA approvals let 3 companies make a replacement switch differential, Parker Hannifin CORP holding the most (3).
Approved replacement parts 5 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a switch differential and sell it as an approved part for the models named. These are the companies holding such approvals for a switch differential:
For these models most: Boeing 777 (3), Boeing 767 (2), Boeing 757 (2), Boeing 747 (2), Boeing 737 (2), Mcdonnell Douglas DC-10 (1), Mcdonnell Douglas Aircraft Co MD-88 (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Custom Control Sensors, LLC | Switch Differential Pressure 42D131-1 | 42D131-1 | Boeing DC-9, MD-88 SERIES, MD-90 SERIES | 2016-10-13 | current |
| Parker Hannifin CORP | SWITCH DIFFERENTIAL PRESSURE, FILTER 2040061-103 | 2040061-103 | Boeing 737-100 SERIES, 737-200 SERIES,... | 2011-12-14 | current |
| Parker Hannifin CORP | SWITCH DIFFERENTIAL PRESSURE, FILTER 2040061-103 | 2040061-103 | Boeing 737-100 SERIES, 737-200 SERIES,... | 2011-12-14 | current |
| Parker Hannifin CORP | Switch Differential Pressure, Filter 2040061-102 | 2040061-102 | Boeing 777-200 Series, 777-200LR Series,... | 2009-04-28 | current |
| Hydra-Electric CO | Switch-Differential Pressure 83165-1 | - | McDonnell Douglas DC-10 | 1973-08-23 | 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.