# SDR WIB2002F00009

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 17, 2002
- Submitted: October 3, 2002
- Operation: Air carrier
- Aircraft: [N31TK](https://openairdocs.org/aircraft/N31TK), registered now
- Make and model: Lear 31A
- Registry model: [Lear 31A](https://openairdocs.org/model/learjet-31a) (OpenAirDocs)
- Aircraft serial: 059
- Engine: Garrtt TFE731*
- System (JASC): [2740 · Stabilizer Control System](https://openairdocs.org/jasc/2740)
- Part: Actuator
- Part number: 3135540009
- Part serial: 165
- Condition: Malfunctioned
- Location: Stabilizer
- Part time: 451 hours
- Stage of operation: NR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/WIB2002F00009

## Discrepancy

PITCH TRIM LIGHT CAME ON DURING TAKEOFF.  PITCH TRIM INDICATOR MOVES RAPIDLY UP AND DOWN.  INSPECTION AND OVERHAULED EVERY 600 HOURS.  RARELY MAKES 600 HOURS.

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