Gas Source
No failure report names the gas source. 5 FAA approvals let 4 companies make a replacement gas source, General Dynamics holding the most (2).
Approved replacement parts 5 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a gas source and sell it as an approved part for the models named. These are the companies holding such approvals for a gas source:
For these models most: Boeing 747 (5).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Aero Fluid Products | Gas Source Assembly 814200-20 | 60B50324-5 | Boeing 747-100 Series, 747-100B Series,... | 2013-07-23 | current |
| Aerocontrolex Group, Transdigm INC | Gas Source Assembly 814200-20 | 60B50324-5 | Boeing 747-100 Series, 747-100B Series,... | 2010-03-21 | current |
| Hr Textron INC | Gas Source Assembly 814200-20 | 60B-50324-5 | Boeing 747 | 2005-05-16 | current |
| General Dynamics | Gas Source 25996-303-11 | Modification Part | Boeing 747-100 Series | 2001-03-14 | current |
| General Dynamics | Gas Source 25996-301-13 | Modification Part | Boeing 747-100 Series | 2001-03-14 | 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.