Rotor Drive
No failure report names the rotor drive. 2 FAA approvals let 1 company make a replacement rotor drive, Thi Texas Helogistics INC 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 rotor drive and sell it as an approved part for the models named. These are the companies holding such approvals for a rotor drive:
For these models most: Bell 47 (2).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Thi Texas Helogistics INC | Rotor Drive, Shaft Assembly., Main Tail 90-644-214-9 | Bell Helicopter Textron, Incorporated 47-644-214-9 | Bell 47G-2A, 47G-2A-1, 47G-4 | 2003-02-20 | current |
| Thi Texas Helogistics INC | Rotor Drive, Shaft assembly., Main Tail 90-644-214-9 | Bell Helicopter Textron, Inc. 47-644-214-9 | Bell 47G-2A, 47G-2A-1, 47G-4 | 2003-02-20 | 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.