Stud Pitch
No failure report names the stud pitch. 2 FAA approvals let 2 companies make a replacement stud pitch, South Bay Manufacturing, INC. 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 stud pitch and sell it as an approved part for the models named. These are the companies holding such approvals for a stud pitch:
For these models most: Md Helicopters Llc 369 (1), Md Helicopters Inc 600 (1), Md Helicopters Inc 500 (1), Hughes Helicopters Inc HUGHES 369 (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Pt Aerospace LLC | Stud-Pitch Bearing Main Rotor PTA369D21248 | 369D21248 | MDHI HUGHES) (369D, 369E, 369FF | 2017-01-09 | current |
| South Bay Manufacturing, INC. | Stud-Pitch Bearing, Main Rotor 500D21248 | 369D21248 | MDHC Hughes) (369H, HS, HM | 2000-02-02 | 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.