Trough
No failure report names the trough. 4 FAA approvals let 2 companies make a replacement trough, Rsg Products INC holding the most (3).
Approved replacement parts 4 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a trough and sell it as an approved part for the models named. These are the companies holding such approvals for a trough:
For these models most: Bell 412 (3), Boeing 777 (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Rsg Products INC | Trough, Upper 04BL224200003-01 | 04BL224200003-01 | Bell 412EP | 2020-10-07 | current |
| Rsg Products INC | Trough Assembly 02BL224200002-01 | 02BL224200002-01 | Bell 412EP | 2020-10-07 | current |
| Rsg Products INC | Trough, Lower 04BL224200003-03 | 04BL224200003-03 | Bell 412EP | 2020-10-07 | current |
| Harper Engineering | Trough Assy H3-1918-1 | S414W003-3 | Boeing 777-300ER SERIES | 2008-11-25 | 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.