What was found
TORQUE CONTROL UNIT CAUSES ENGINE OSCILLATIONS AND TORQUE ACCELERATIONS. COULD NOT DUPLICATE OSCILLATION. UNIT NEEDED MINOR TRIM ADJUSTMENTS. TESTED SATISFACTORY.
- Difficulty date
- February 27, 2003
- Submitted
- March 3, 2003
- Operation
- Air carrier
- Aircraft
- N142PH
- Make and model
- Bell 412
- Aircraft serial
- 33150
- Aircraft time
- 6,176 hours
- Engine
- Pwa PT6T3B
- System (JASC)
- 7321 · Fuel Control/Turbine Engines
- Part
- Control Unit
- Part number
- 32447066
- Part serial
- A65356
- Condition
- Oscillates
- Location
- Torque
- Stage of operation
- NR
- How discovered
- 9
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.