Plunger Ass
No failure report names the plunger ass. 2 FAA approvals let 1 company make a replacement plunger ass, Aero Accessories LLC holding the most (2).
Approved replacement parts 2 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a plunger ass and sell it as an approved part for the models named. These are the companies holding such approvals for a plunger ass:
For these models most: Pilatus Britten-Norman Ltd. BN-2 (1), Britten-Norman BN-2 (1), Beechcraft 58 Baron (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Aero Accessories LLC | Plunger Ass’y, Pilot Valve AG210331 | Woodward P/N:210331 | Textron Aviation Inc. 310, 310A (USAF U-3A), 310B | 2026-05-27 | current |
| Aero Accessories LLC | Plunger Ass’y, Pilot Valve AG210331 | Woodward P/N:210331 | Britten-Norman Aerospace BN-2, BN-2A, BN-2A-6 | 2026-05-27 | 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.