Roller Unit
No failure report names the roller unit. 2 FAA approvals let 1 company make a replacement roller unit, Kalitta Maintenance 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 roller unit and sell it as an approved part for the models named. These are the companies holding such approvals for a roller unit:
For these models most: Boeing 747 (2).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Kalitta Maintenance | Roller Unit 287303-1KM | Telair 287303-1 | The Boeing Company 747-400 Series, 747-400F Series | 2018-09-05 | current |
| Kalitta Maintenance | Roller Unit 287303-3KM | Telair 287303-3 | The Boeing Company 747-400F Series | 2018-09-05 | 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.