# SDR QR9R2023080900008

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 9, 2023
- Submitted: August 9, 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: 19724349820
- Aircraft time: 2,567 hours
- System (JASC): [2200 · Auto Flight System](https://openairdocs.org/jasc/2200)
- Part: Autopilot Sys
- Part number: 43800100302
- Part serial: 1806597
- Condition: Failed
- 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/QR9R2023080900008

## Discrepancy

DURING RUN-UP, SAS FAILED AND WOULD NOT RESET. TESTFLIGHT EVALUATION REVEALED AC FAILED AP TEST, YAW ACTUATOR CAUTION APPEARED ON PFD ALONG WITH AP1/AP2, YAW SAS, BACK-UP SAS ON CAD. REPLACED YAW FOG GYRO IAW AMM 22-10-00, 4-5. T/F COMPLETED IAW AMM 05-60-00,6-12 NO ISSUES NOTED.

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