# SDR QR9R2024052200001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 22, 2024
- Submitted: May 22, 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: 18724209806
- Aircraft time: 3,030 hours
- System (JASC): [2200 · Auto Flight System](https://openairdocs.org/jasc/2200)
- Part: Motor
- Part number: 41800879001
- Part serial: 3072
- Condition: Failed
- Location: Yaw Trim
- Stage of operation: TX
- How discovered: V
- Nature of condition: F
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/QR9R2024052200001

## Discrepancy

AIRCRAFT FAILED AP TEST DURING START RUN-UP. TROUBLESHOOTING REVEALED YAW PORTION OF AP TEST FAILS. REMOVED AND REPLACED YAW TRIM MOTOR IAW AMM 67-14-00, 4-1.

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