Gn Gas
No failure report names the gn gas. 3 FAA approvals let 1 company make a replacement gn gas, General Dynamics holding the most (3).
Approved replacement parts 3 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a gn gas and sell it as an approved part for the models named. These are the companies holding such approvals for a gn gas:
For these models most: Boeing 747 (3).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| General Dynamics | GN2 Gas Sup 25972-503-11 | Modification Part | Boeing 747-100 Series | 2001-03-14 | current |
| General Dynamics | GN2 Gas Sup 25972-502-11 | Modification Part | Boeing 747-100 Series | 2001-03-14 | current |
| General Dynamics | GN2 Gas Sup 25972-504-11 | 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.