Late Model
No failure report names the late model. 2 FAA approvals let 1 company make a replacement late model, Brunner Machine Works, LLC. holding the most (2).
Approved replacement parts 2 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a late model and sell it as an approved part for the models named. These are the companies holding such approvals for a late model:
For these models most: Robinson R44 (2).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Brunner Machine Works, LLC. | Aft Late Model Upper Clamp R44M-401 | R44M-401 | Robinson Helicopter Company R44, R44II | 2019-10-01 | current |
| Brunner Machine Works, LLC. | Aft Late Model Lower Bushing R44M-402 | R44M-402 | Robinson Helicopter Company R44, R44II | 2019-10-01 | 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.