# SDR QR9R2024101600002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 16, 2024
- Submitted: October 16, 2024
- Operation: General aviation
- Filed by: [M1 Support Services, repair station QR9R369D](https://openairdocs.org/faa-repair-station/QR9R369D/m1-support-services.md) (OpenAirDocs)
- Make and model: Bolkms BK117C2
- Aircraft serial: 09721119328
- Aircraft time: 4,377 hours
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Motor
- Part number: 41800879001
- Part serial: 3012
- Condition: Failed
- Location: Yaw Trim
- Stage of operation: HO
- How discovered: O
- Nature of condition: J
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/QR9R2024101600002

## Discrepancy

YAW ACTUATOR CA ILLUMINATED DURING HOVER FLIGHT. DURING FUNCTIONAL TEST (22-10-00, 5-1) OF THE AUTOMATIC FLIGHT CONTROL SYSTEM THE YAW TRIM MOTOR FAILED. REMOVED AND REPLACED THE YAW TRIM MOTOR IAW AMM 67-14-00, 4-1. MOC SUCCESSFULLY COMPLETED.

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