# SDR QR9R2023080800002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 8, 2023
- Submitted: August 8, 2023
- 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: 15723829762
- Aircraft time: 3,451 hours
- System (JASC): [2200 · Auto Flight System](https://openairdocs.org/jasc/2200)
- Part: Actuator
- Part number: 41800879001
- Part serial: 3003
- Condition: Ratcheting
- Location: Unknown
- Stage of operation: HO
- 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/QR9R2023080800002

## Discrepancy

DURING RUN-UP, RECEIVED YAW ACTUATOR FAIL. TROUBLESHOOTING FOUND YAW TRIM ACTUATOR ARM TO BE BINDING AND RATCHETING, WITH OR WITHOUT FTR ACTIVATED. REMOVED AND REPLACED YAW TRIM ACTUATOR, T/F SUCCESSFULLY COMPLETED.

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