Thumb Plate
No failure report names the thumb plate. 2 FAA approvals let 1 company make a replacement thumb plate, Cygnet Aerospace CORP 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 thumb plate and sell it as an approved part for the models named. These are the companies holding such approvals for a thumb plate:
For these models most: Cessna A152 (2), Cessna A150 (2), Cessna 172 Skyhawk (2).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Cygnet Aerospace CORP | Thumb Plate CA35-230 | Modification Article | Textron Aviation Inc. 120, 140, 140A | 2026-01-28 | current |
| Cygnet Aerospace CORP | Thumb Plate CA7651 | Modification Article | Textron Aviation Inc 120, 140, 140A | 2026-01-28 | 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.