# SDR 2006FA0000603

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 30, 2006
- Submitted: June 20, 2006
- Operation: General aviation
- Aircraft: N408CW
- Make and model: Beech 400A
- Registry model: [Beech 400A](https://openairdocs.org/model/hawker-beechcraft-400a) (OpenAirDocs)
- Aircraft serial: RK108
- System (JASC): [2213 · Flight Controller](https://openairdocs.org/jasc/2213)
- Part: Servo
- Part number: 6226717004
- Part serial: 407
- Condition: Intermittent
- Location: Yaw Damper
- Stage of operation: AP
- 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/2006FA0000603

## Discrepancy

FLIGHT CREW REPORTED PILOTS CONTROL WHEEL TRIM INTERRUPT/AUTOPILOT DISENGAGE SWITCH NOT DISCONNECTING YAW DAMPER ON FINAL APPROACH.  FOUND CONTROL WHEEL SWITCH OPERATIONS NORMAL.  REPLACED SVO-85C YAW DAMPER SERVO WITH OVERHAULED UNIT.  ALSO, REPLACED NR 1 FCC-850 CARD WITH OVERHAULED UNIT TO CORRECT ADDITIONAL AUTOPILOT INTERMITTENT PITCH TRIM FAILURE FAULT.  GROUND AND FLIGHT TESTS SATISFACTORY.  (K)

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