Thru Shaft
No failure report names the thru shaft. 8 FAA approvals let 3 companies make a replacement thru shaft, Hydro-Aire Incorporated holding the most (4).
Approved replacement parts 8 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a thru shaft and sell it as an approved part for the models named. These are the companies holding such approvals for a thru shaft:
For these models most: Boeing 747 (7), Sikorsky S-61 (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Hydro-Aire Incorporated | THRU SHAFT ACTUATOR, (LEGREST) PS6-41100-00 | Modification Part | BOEING 747-400 SERIES | 2010-09-06 | current |
| Hydro-Aire Incorporated | Thru-Shaft Actuator (Legrest) PS6-41000-00 | PS6-41000-00 | Boeing 747-400 | 2007-12-02 | current |
| Hydro-Aire Incorporated | Thru-Shaft Actuator (Seatpan) PS6-40000-00 | PS6-40000-00 | Boeing 747-400 | 2007-12-02 | current |
| Hydro-Aire Incorporated | Thru Shaft Actuator, (Legrest) PS6-41000-01 | PS6-41000-01 | Boeing 747-400 | 2007-12-02 | current |
| Pl Porter Controls INC | Thru Shaft Actuator, (Legrest) PS6-41000-01 | PS6-41000-01 | Boeing 747-400 | 2007-07-22 | current |
| Pl Porter Controls INC | Thru-Shaft Actuator (Legrest) PS6-41000-00 | PS6-41000-00 | Boeing 747-400 | 2005-10-19 | current |
| Pl Porter Controls INC | Thru-Shaft Actuator (Seatpan) PS6-40000-00 | PS6-40000-00 | Boeing 747-400 | 2005-10-19 | current |
| Rotair Industries INC | Thru Shaft Assembly R6135-20148-6 | S6135-20148-6 | Sikorsky S61A/D/L/N/NM | 1992-12-31 | 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.