Non Metallic
No failure report names the non metallic. 2 FAA approvals let 2 companies make a replacement non metallic, Wencor, LLC holding the most (1).
Approved replacement parts 2 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a non metallic and sell it as an approved part for the models named. These are the companies holding such approvals for a non metallic:
For these models most: Lockheed 382 (1), Boeing 747 (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Wencor, LLC | Non-Metallic Ring Seal 3910794-02WE | 3910794-02 | The Boeing Company 747-400 Series, 747-400D Series,... | 2010-08-04 | current |
| Elco Gear CORP | Non-Metallic Coupling 2241901 | Airesearch 3300065-1 | Lockheed 382 (Using Airesearch starter P/N... | 1991-12-19 | 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.