# SDR QR9R2025031700006

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 17, 2025
- Submitted: March 17, 2025
- 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: 9701
- Aircraft time: 4,199 hours
- System (JASC): [6700 · Rotorcraft Flight Control](https://openairdocs.org/jasc/6700)
- Part: Actuator
- Part number: 41800876400
- Part serial: 704588
- Condition: Failed
- Location: Autopilot
- 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/QR9R2025031700006

## Discrepancy

DURING AP TEST, YAW AND SAS BACKUP WOULD NOT EXTINGUISH. DURING TROUBLESHOOTING, FOUND A VALID SIGNAL IN ON THE YAW SEMA BUT NO VALID SIGNAL OUT. REMOVED AND REPLACED SEMA ACTUATOR IAW AMM 67-20-00, 4-14.

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