Torque Motor
3 failure reports named the torque motor in the last ten years, 6 since 1998, most often on the Cessna 560 Citation V, Ultra, Encore and Excel; the condition most often found was "inoperative". 9 FAA approvals let 5 companies make a replacement torque motor, United Technologies, Hamilton Sundstrand holding the most (3).
Reports by year
Reports by year, as a table
| reports | |
|---|---|
| 1998 | 1 |
| 2007 | 1 |
| 2014 | 1 |
| 2019 | 1 |
| 2021 | 2 |
Which system the reports file it under last ten years
Reports by system, as a table
| reports | |
|---|---|
| Engine | 2 |
| Heating, ice protection and utility systems | 1 |
Models most often reporting it last ten years
Models most reported, as a table
| reports | |
|---|---|
| Cessna 560 Citation V, Ultra, Encore and Excel | 2 |
| Embraer ERJ 170 E170 and E175 | 1 |
How it failed the condition found, last ten years
Conditions found, as a table
| reports | |
|---|---|
| inoperative | 2 |
| defective | 1 |
Engines most often reporting it
Approved replacement parts 9 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a torque motor and sell it as an approved part for the models named. These are the companies holding such approvals for a torque motor:
For these models most: Mcdonnell Douglas MD-10 (1), Mcdonnell Douglas DC-10 (1), Embraer ERJ 190 E190 and E195 (1), Embraer ERJ 170 E170 and E175 (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Honeywell International INC. | Torque Motor 124904-1-1 | 124904-1-1 | Textron Aviation Inc. 400T | 2022-11-04 | current |
| Ontic Engineering & Manufacturing INC | Torque Motor, Fuel Control 3883260-4 | 3883260-4 | Honeywell 700-4E (MD-11) | 2013-11-14 | current |
| Ontic Engineering & Manufacturing INC | Torque Motor, Fuel Control 3883260-2 | 3883260-2 | Honeywell 700-4E (MD-11) | 2013-11-14 | current |
| Ontic Engineering & Manufacturing INC | Torque Motor 977324-3 | 977324-3 | Honeywell 700-4B (DC-10, MD-10), 700-5 (A300) | 2013-11-14 | current |
| Jet Parts Engineering INC | Torque Motor Valve 3533-046JP | 3533-046 | CFM International, S.E. CFM56-5 CFM56-5-A1/F CFM56-5A3... | 2011-01-19 | current |
| United Technologies, Hamilton Sundstrand | Torque Motor Control 1001253-1 | 1001253-1 | Embraer Empresa ERJ190-100IGW, ERJ190-100LR, ERJ190-100STD | 2006-02-23 | current |
| United Technologies, Hamilton Sundstrand | Torque Motor Control 1001253-1 | 17032703-405 | Embraer Empresa ERJ170-100 STD, ERJ170-100 LR | 2004-03-18 | current |
| Pacific Hydraulic Systems | Torque Motor, Feedback Spring & Projector Jet Assembly R70754 | 70754 | McDonnell Douglas DC-10-10, -30, -30F | 2000-10-30 | current |
| United Technologies, Hamilton Sundstrand | Torque Motor, Dual Valve C143123-2 | SAAB 9303558-004 | Saab Aircraft AB 2000 | 1994-09-12 | 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.