Formed Rib
No failure report names the formed rib. 3 FAA approvals let 1 company make a replacement formed rib, Fra Enterprises INC holding the most (3).
Approved replacement parts 3 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a formed rib and sell it as an approved part for the models named. These are the companies holding such approvals for a formed rib:
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Fra Enterprises INC | Formed Inner Rib SS10203R | Modification Part | Univair Aircraft Corp (Alon) A-2, A2-A, (ERCO) 415-D | 2001-03-22 | current |
| Fra Enterprises INC | Formed Inner Rib SS10203R | Modification Part | Univair Aircraft Corp (ERCO) 415-C, 415-CD, Serials 813 and up. | 2001-03-22 | current |
| Fra Enterprises INC | Formed Inner Rib SS10203L | Modification Part | Univair Aircraft Corp (Alon) A-2, A2-A, (ERCO) 415-D | 2001-03-22 | 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.