Ruder Trim
No failure report names the ruder trim. 3 FAA approvals let 3 companies make a replacement ruder trim, Gulfstream Aerospace LP 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 ruder trim and sell it as an approved part for the models named. These are the companies holding such approvals for a ruder trim:
For these models most: Boeing 747 (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Gulfstream Aerospace LP | Ruder Trim Tab 883026-503 | IAI 3883026-503 | Israel 1121, 1121A, 1121B | 2001-06-06 | current |
| Galaxy Aerospace CO LP | Ruder Trim Tab 883026-503 | IAI 3883026-503 | Israel 1121, 1121A, 1121B | 2001-05-08 | current |
| Eemco, Div of Datron Sys INC | Ruder Trim Actuator 658D100-9 | S251T320-4 | Boeing 747-400 | 1997-01-12 | 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.