# SDR RU3A20170918028

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 15, 2017
- Submitted: September 19, 2017
- Operation: Air carrier
- Aircraft: [N78](https://openairdocs.org/aircraft/N78), registered now
- Make and model: Beech 300LW
- Registry model: [Beech 300LW](https://openairdocs.org/model/beech-300lw) (OpenAirDocs)
- Aircraft serial: FF13
- Aircraft time: 15,672 hours, 8,307 cycles
- System (JASC): [2215 · Autopilot Main Servo](https://openairdocs.org/jasc/2215)
- Part: Servo
- Part number: 8221168003
- Part serial: 33PYX
- Condition: Out Of Adjust
- Location: Zone 100
- Part time: 921 hours, 471 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: F
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/RU3A20170918028

## Discrepancy

AUTOPILOT MADE UN-COMMANDED MOMENTARY PITCH INPUTS AT FL230 AND THEN AGAIN AT 4000'MSL.  FOUND ELEVATOR TRIM SERVO CLUTCH SLIPPING-OUT OF TOLERANCE.  ADJUSTED THE SERVO CLUTCH TO MAINTENANCE MANUAL SPECS.

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