Hums Model
No failure report names the hums model. 3 FAA approvals let 1 company make a replacement hums model, Pratt & Whitney Engine Services INC (Formerly Altair) 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 hums model and sell it as an approved part for the models named. These are the companies holding such approvals for a hums model:
For these models most: Md Helicopters Inc 369 (1), Hughes 369 500 series helicopters (1), Bell 206 JetRanger and LongRanger (1), Airbus Helicopters AS350 AStar (Écureuil), now H125 (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Pratt & Whitney Engine Services INC (Formerly Altair) | HUMS Model 1122 HUMS-A-070-1 | HUMS-A-070-1 | BELL Bell 206, 206A, 206A-1 | 2007-10-30 | current |
| Pratt & Whitney Engine Services INC (Formerly Altair) | HUMS Model 1122 HUMS-A-070-1 | HUMS-A-070-1 | MD Helicopters, Inc. MDHI) (369, 369A, 369H | 2007-10-30 | current |
| Pratt & Whitney Engine Services INC (Formerly Altair) | HUMS Model 1122 HUMS-A-070-1 | HUMS-A-070-1 | Eurocopter France AS-350B, AS-350B1, AS-350B2 and AS-350BA | 2007-10-30 | 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.