Gearcase
No failure report names the gearcase. 2 FAA approvals let 1 company make a replacement gearcase, Moog Aircraft Group holding the most (2).
Approved replacement parts 2 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a gearcase and sell it as an approved part for the models named. These are the companies holding such approvals for a gearcase:
For these models most: Gulfstream G-IV Gulfstream IV (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Moog Aircraft Group | Gearcase 544242-1-1 | Gulfstream Aerospace 1159SCC214-3 | Gulfstream GII, GIIB, GIII | 1996-04-18 | current |
| Moog Aircraft Group | Gearcase 541984-1-1 | Gulfstream Aerospace 1159SCC215-1 | Gulfstream GII | 1996-04-18 | 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.