Web Rib
No failure report names the web rib. 3 FAA approvals let 1 company make a replacement web rib, Seattle Aero LLC 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 web rib and sell it as an approved part for the models named. These are the companies holding such approvals for a web rib:
For these models most: Boeing 737 (3).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Seattle Aero LLC | Web-Rib WSTA 583 737-4254-1 | 737-4254-1 | Boeing 737-300 | 2007-02-27 | current |
| Seattle Aero LLC | WEB RIB 737-3255-3 | 737-3255-3 | Boeing 737-300 Series | 2006-10-03 | current |
| Seattle Aero LLC | Web Rib 25 737-5255-1 | 737-5255-1 | Boeing 737-700, -800 Series | 2006-10-03 | 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.