# SDR QR9R2026092200002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 22, 2026
- Submitted: September 22, 2026
- 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: 9780
- Aircraft time: 3,952 hours
- System (JASC): [6700 · Rotorcraft Flight Control](https://openairdocs.org/jasc/6700)
- Part: Actuator
- Part number: 41800876400
- Part serial: MC3387
- 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/QR9R2026092200002

## Discrepancy

ACTUATOR CAUTION LIGHT ILLUMINATED CENTER POSITION ON THE CAD WITH CORRESPONDING AMBER Y ON PFD. TROUBLESHOOTING REVEALED YAW SEMA IS BAD CAUSING ACTUATOR FAIL ON CAD AND AMBER Y ON PFD, HAS CODE YAWEMA INVAL. REMOVED AND REPLACED SEMA ACTUATOR IAW AMM 67-20-00, 4-8.

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