Ring Shear
No failure report names the ring shear. 2 FAA approvals let 2 companies make a replacement ring shear, Gemini Engineering 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 ring shear and sell it as an approved part for the models named. These are the companies holding such approvals for a ring shear:
For these models most: Boeing 757 (2).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Aviation Materials Management, INC | RING SHEAR 273N1109-1 | 273N1109-1 | Boeing 757-200 SERIES, 757-200CB SERIES,... | 2021-03-24 | current |
| Gemini Engineering | RING SHEAR 273N1109-1 | 273N1109-1 | Boeing 757-200 Series, 757-200CB Series,... | 2009-06-03 | 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.