# SDR 6CBA2020031920190

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 18, 2020
- Submitted: March 19, 2020
- Operation: Air carrier
- Aircraft: [N860AF](https://openairdocs.org/aircraft/N860AF), registered now
- Make and model: Pilats PC1247E
- Aircraft serial: 1860
- Aircraft time: 974 hours, 897 cycles
- Engine: Pwc PT6A67P
- Engine time: 971 hours, 894 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Adapter
- Part number: 065001950100
- Part serial: KTA28102610
- Condition: Faulty
- Location: Zone 100
- Part time: 974 hours, 897 cycles
- Stage of operation: DE
- 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/6CBA2020031920190

## Discrepancy

PROBLEM: THE FLIGHT CREW REPORTED WHILE IN DECENT TO KIAD, " UNCOMANDED RUDDER TRIM TO FULL LIMIT, YAW DAMPER FAILED WHICH IN CAUSED A/C TURN. TRIM INTERRUPT TO REMOVE POWER AND RESET CB. NORMAL OPERATION  WAS REGAINED  AND THE IRCRAFT LANDED WITHOUT INCIDENT. RESOLUTION: CONTRACT MAINTENANCE VENDOR WAS CALLED TO THE AIRCRAFT. THE KTA 2810 TRIM ADAPTER WAS REMOVED AND REPLACED AND OPS CHECK GOOD IAW   AMM 12-B-22-10-07-00A-920A-A  NO FURTHER DEFECTS WERE NOTED.

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