Regulator Parallel
No failure report names the regulator parallel. 4 FAA approvals let 2 companies make a replacement regulator parallel, Triumph Accessory Services 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 regulator parallel and sell it as an approved part for the models named. These are the companies holding such approvals for a regulator parallel:
For these models most: Piper PA-23 Apache and Aztec (3), Piper PA-34 Seneca (2), Piper PA-31 Navajo and Chieftain (2), Piper PA-60 Aerostar (1), Piper PA-44 Seminole (1), Piper PA-39 Twin Comanche C/R (1), Piper PA-30 Twin Comanche (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Lamar INC | Regulator 28V Parallel Oper'n B-00286-1 | 550 390 | Piper PA-23-235/-250 PA-31, PA-300, PA-31-325/-350 | 1992-12-31 | current |
| Triumph Accessory Services | Regulator 14V Parallel Oper'n B-0288-1 | 550 393 | Piper PA-23-235/-250, PA-30, PA-39 | 1991-07-17 | current |
| Triumph Accessory Services | Regulator 28V Parallel Oper'n B-00286-1 | Piper 550 390 | Piper PA-23-235/-250, PA-31, PA-300 | 1991-07-17 | current |
| Triumph Accessory Services | Regulator Parallel Oper'n 28V B-00306-3 | Piper 584 042 | Piper PA-60, PA-60-601, PA-60-601P/-602P -700P | 1991-07-17 | 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.