Spar Aileron
No failure report names the spar aileron. 5 FAA approvals let 3 companies make a replacement spar aileron, Dakota Cub Aircraft of Alaska holding the most (2).
Approved replacement parts 5 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a spar aileron and sell it as an approved part for the models named. These are the companies holding such approvals for a spar aileron:
For these models most: Boeing A75 Stearman Kaydet (3), Piper PA-18 Super Cub (2), Piper PA-11 Cub Special (2), Piper J-3 Cub (2), Boeing PT-13 (2), Boeing IB75 (2), Boeing E75 Stearman Kaydet (2), Boeing D75 (2), Boeing B75 Stearman Kaydet (2), Boeing 75 (2).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Aircorps Aviation, LLC | Spar – Aileron LH 75-1403-ACP | 75-1403 | The Boeing Company A75L3, 75 (Army PT-13), A75 (Army PT-13A | 2026-08-17 | current |
| Aircorps Aviation, LLC | Spar – Aileron RH 75-1403-1-ACP | 75-1403-1 | The Boeing Company A75L3, 75 (Army PT-13), A75 (Army PT-13A | 2026-08-17 | current |
| Dakota Cub Aircraft of Alaska | Spar Aileron DC42972-1 | modification part | Piper J-3, PA-11, PA-11S | 2005-03-03 | current |
| Dakota Cub Aircraft of Alaska | Spar Aileron DC42972 | modification part | Piper J-3, PA-11, PA-11S | 2005-03-03 | current |
| Myers Sheetmetal, Div of Kampel Enterprises | Spar-Aileron K75-1403 | Stearman 75-1403 | Boeing Wichita A75L3 (Stearman) | 1995-07-31 | 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.