Screw Butterfly
No failure report names the screw butterfly. 3 FAA approvals let 3 companies make a replacement screw butterfly, Goode Engineering CORP 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 screw butterfly and sell it as an approved part for the models named. These are the companies holding such approvals for a screw butterfly:
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Avstar Fuel Systems INC | Screw Butterfly AV15-483 | AVStar Aircraft Accessories P/N AV15-483 | Lycoming Replacement Part where AVStar... | 2008-08-21 | current |
| Goode Engineering CORP | Screw Butterfly T15-483 | Facet Aerospace Marvel-Schebler (FACET) 15-483 | Franklin Engine Co. Replacement Part where Facet P/N 15-... | 1998-04-20 | current |
| Brg Aero Parts INC | Screw Butterfly T15-483T | Marvel-Schebler (Facet) 15-483 | Franklin Engine Co. Lycoming, Continental, and Franklin engines | 1994-01-02 | 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.