External Gear
No failure report names the external gear. 3 FAA approvals let 3 companies make a replacement external gear, Teleflex Control Systems holding the most (1).
Approved replacement parts 3 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a external gear and sell it as an approved part for the models named. These are the companies holding such approvals for a external gear:
For these models most: Boeing 747 (3).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Telair International INC | External Gear Actuator 1387T100-11 | 60B80029-10 | Boeing 747-200B, -200C, -200F | 2005-07-29 | current |
| Teleflex Control Systems | External Gear Actuator 1387T100-11 | Boeing 60B80029-10 | Boeing 747-200, -300, -400 | 1997-05-01 | current |
| Telair International INC (No Longer Have Pma Production Approval) | External Gear Actuator 1387T100-11 | Boeing 60B80029-10 | Boeing 747-200, -300, -400 | 1997-05-01 | 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.