# SDR QR9R2026100500001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 5, 2026
- Submitted: October 5, 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: 9153
- Aircraft time: 5,038 hours
- System (JASC): [6700 · Rotorcraft Flight Control](https://openairdocs.org/jasc/6700)
- Part: Actuator
- Part number: 41800876400
- Part serial: MC4004
- 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/QR9R2026100500001

## Discrepancy

A/C FAILED AUTOPILOT TEST; YAW SAS AND BACKUP SAS ACTUATORS. A TEST FLIGHT EVAL FOUND AUTOPILOT FAILS SELFTEST. INDICATES AP1, YAW SAS, ACTUATOR, BACKUP SAS ALTERNATING WITH AP2, YAW SAS, ACTUATOR, BACKUP SAS. ON THE CAD VEMD AFCS SUBSYSTEM FAILURE CODES INDICATE 1 FAIL AND 2 FAIL. AN AMBER Y INDICATES ON THE PFD. AUTOPILOT TEST WOULD NOT COMPLETE DUE TO FAILURE. REMOVED AND REPLACED SEMA ACTUATOR IAW AMM 67-20-00, 4-14. MTF/MOC SUCCESSFULLY COMPLETED, NORMAL OPERATION NOTED.

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