What was found
LARGE TORQUE OSCILLATION. FOUND SERVO VALVES AND LEVER LEAKING AIR. CLEANED VALVES AND LEVER, RESET UNIT AND TESTED SATISFACTORY.
- Difficulty date
- July 29, 2002
- Submitted
- August 19, 2002
- Operation
- Air carrier
- Aircraft
- N3893N
- Make and model
- Bell 412
- Aircraft serial
- 33010
- Aircraft time
- 19,509 hours
- Engine
- Pwa PT6T3B
- System (JASC)
- 7321 · Fuel Control/Turbine Engines
- Part
- Servo Valve
- Condition
- Leaking
- Location
- Tcu
- Component
- Tcu
- Component part number
- 32447066
- Stage of operation
- NR
- How discovered
- O
- Nature of condition
- R, J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.