Rib Inboard
No failure report names the rib inboard. 7 FAA approvals let 2 companies make a replacement rib inboard, Aviation Enterprises holding the most (6).
Approved replacement parts 7 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a rib inboard and sell it as an approved part for the models named. These are the companies holding such approvals for a rib inboard:
For these models most: Cessna T337 (6), Cessna P337 (6), Cessna 337 Skymaster (6), Cessna 336 (4), Boeing IB75 (1), Boeing E75 Stearman Kaydet (1), Boeing D75 (1), Boeing B75 Stearman Kaydet (1), Boeing A75 Stearman Kaydet (1), Boeing 75 (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Big Sky Stearman | Rib-Inboard Of Aileron BSE75N1-1214 | E75N1-1214 | Boeing A75L3*, 75*, A75* | 2015-05-12 | current |
| Aviation Enterprises | Rib-Inboard RH AE 1425010-22 | 1425010-22 | Cessna 336 series, 337 series, T337 series | 2003-02-11 | current |
| Aviation Enterprises | Rib-Inboard RH AE 1425010-32 | 1425010-32 | Cessna 336 series, 337 series, T337 series | 2003-02-11 | current |
| Aviation Enterprises | Rib-Inboard LH AE 1425010-21 | 1425010-21 | Cessna 336 series, 337 series, T337 series | 2003-02-11 | current |
| Aviation Enterprises | Rib-Inboard LH AE 1425010-31 | 1425010-31 | Cessna 336 series, 337 series, T337 series | 2003-02-11 | current |
| Aviation Enterprises | Rib-Inboard Aileron LH AE 1424000-19 | 1424000-19 | Cessna 337 series, T337 series, P337 series | 2002-05-05 | current |
| Aviation Enterprises | Rib-Inboard Aileron RH AE 1424000-56 | 1424000-56 | Cessna 337 series, T337 series, P337 series | 2002-05-05 | 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.