Reinforcing Ring
No failure report names the reinforcing ring. 4 FAA approvals let 4 companies make a replacement reinforcing ring, Kenmore Air Harbor INC holding the most (1).
Approved replacement parts 4 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a reinforcing ring and sell it as an approved part for the models named. These are the companies holding such approvals for a reinforcing ring:
For these models most: Piper PA-34 Seneca (2), Boeing 737 (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Kenmore Air Harbor INC | Reinforcing Ring- Landing Lamp Cutout KAC2W299 | C2-W-299 | Viking Air Limited DHC-2 Mk. I DHC-2 Mk. II DHC-2 Mk. III | 2019-03-04 | current |
| Gemini Engineering | REINFORCING RING 65-68831-18 | 65-68831-18 | Boeing 737-300 Series, 737-400 Series,... | 2009-06-03 | current |
| Bogert Aviation, Bogert International | Reinforcing Ring 3-1-2 | Modification Parts | Piper PA-34-200T & PA-34-220T | 2005-10-31 | current |
| Bogert Aviation | Reinforcing Ring 3-1-2 | Modification Parts | Piper PA-34-200T & PA-34-220T | 1999-06-24 | 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.