Torque Shaft
4 failure reports named the torque shaft in the last ten years, 26 since 1995, most often on the Airbus Helicopters AS350 AStar (Écureuil), now H125; the condition most often found was "corroded". 16 FAA approvals let 5 companies make a replacement torque shaft, Lucas Aerospace Equipment CORP holding the most (5). The reports call it "torque shaft", "torque shaft arm".
Reports by year
Reports by year, as a table
| reports | |
|---|---|
| 1995 | 1 |
| 1998 | 2 |
| 1999 | 1 |
| 2002 | 1 |
| 2003 | 1 |
| 2004 | 1 |
| 2005 | 1 |
| 2006 | 3 |
| 2007 | 1 |
| 2008 | 2 |
| 2009 | 1 |
| 2011 | 2 |
| 2012 | 1 |
| 2013 | 2 |
| 2014 | 1 |
| 2015 | 1 |
| 2016 | 1 |
| 2017 | 1 |
| 2021 | 1 |
| 2024 | 1 |
Which system the reports file it under last ten years
Reports by system, as a table
| reports | |
|---|---|
| Flight controls | 2 |
| Electrical power | 1 |
| Airframe structure | 1 |
Models most often reporting it last ten years
Models most reported, as a table
| reports | |
|---|---|
| Airbus Helicopters AS350 AStar (Écureuil), now H125 | 1 |
| Airbus A319 | 1 |
| Boeing 757 | 1 |
| Boeing 767 | 1 |
How it failed the condition found, last ten years
Conditions found, as a table
| reports | |
|---|---|
| corroded | 1 |
| defective | 1 |
| out of position | 1 |
| sheared | 1 |
Engines most often reporting it
Approved replacement parts 16 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a torque shaft and sell it as an approved part for the models named. These are the companies holding such approvals for a torque shaft:
For these models most: Gulfstream G-V Gulfstream V (5), Sikorsky S-61 (4), Bell 214 (1), Atr-Gie Avions De Trnsp Rgnl ATR 72 (1), Atr-Gie Avions De Trnsp Region ATR42 (1), Aerospatiale ATR 72 (1), Aerospatiale/Aeritalia ATR 42 (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Seginus INC | Torque Shaft P603630EH | Thales P603630 | ATR - GIE Avions de... ATR42-200, ATR42-300, ATR42-320 | 2016-07-31 | current |
| Erickson Incorporated DBA Erickson Air-Crane | Torque Shaft - Aft, Collective Controls 214-001-108-1 | 214-001-108-1 | Bell 214B | 2015-11-09 | current |
| Rotair Industries INC | TORQUE SHAFT R6140-62118-5 | S6140-62118-5 | Sikorsky S-61A, S-61D, S-61L | 2015-02-23 | current |
| Rotair Industries INC | TORQUE SHAFT R6140-62118-4 | S6140-62118-4 | Sikorsky S-61A, S-61D, S-61L | 2015-02-23 | current |
| Hamilton Sundstrand Corporation | Torque Shaft 762313 | Gulfstream P/N 1159SCC504-7 | Gulfstream GV | 1997-09-28 | current |
| Hamilton Sundstrand Corporation | Torque Shaft 762311 | Gulfstream P/N 1159SCC504-3 | Gulfstream GV | 1997-09-28 | current |
| Hamilton Sundstrand Corporation | Torque Shaft 762314 | Gulfstream P/N 1159SCC504-9 | Gulfstream GV | 1997-09-28 | current |
| Hamilton Sundstrand Corporation | Torque Shaft 762315 | Gulfstream P/N 1159SCC504-11 | Gulfstream GV | 1997-09-28 | current |
| Hamilton Sundstrand Corporation | Torque Shaft 762312 | Gulfstream P/N 1159SCC504-5 | Gulfstream GV | 1997-09-28 | current |
| Lucas Aerospace Equipment CORP | Torque Shaft 65804-1060 | Lockheed 741295-109 | Lockheed L1011-385-1, -1-14, -1-15 | 1997-05-18 | current |
| Lucas Aerospace Equipment CORP | Torque Shaft 65804-1000 | Lockheed 741295-101 | Lockheed L1011-385-1, -1-14, -1-15 | 1997-05-18 | current |
| Lucas Aerospace Equipment CORP | Torque Shaft 65804-1020 | Lockheed 741295-105 | Lockheed L1011-385-1, -1-14, -1-15 | 1997-05-18 | current |
| Lucas Aerospace Equipment CORP | Torque Shaft 65804-1010 | Lockheed 741295-103 | Lockheed L1011-385-1, -1-14, -1-15 | 1997-05-18 | current |
| Lucas Aerospace Equipment CORP | Torque Shaft 65804-1030 | Lockheed 741295-107 | Lockheed L1011-385-1, -1-14, -1-15 | 1997-05-18 | current |
| Rotair Industries INC | Torque Shaft Assembly R6140-62118-5 | S6140-62118-5 | Sikorsky S-61L, N, NM | 1992-12-31 | current |
| Rotair Industries INC | Torque Shaft R6140-62118-4 | S6140-62118-4 | Sikorsky S-61A/D(T.C.H2EA) S-61L/N/NM (T.C.1H15) | 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.