# SDR QR9R20220922002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 22, 2022
- Submitted: September 22, 2022
- 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: 18724269812
- Aircraft time: 2,109 hours
- System (JASC): [6700 · Rotorcraft Flight Control](https://openairdocs.org/jasc/6700)
- Part: Actuator
- Part number: 41800876400
- Part serial: MC4138
- Condition: Failed
- 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/QR9R20220922002

## Discrepancy

ABORTED TAKEOFF DUE TO FAILED AP TEST. TROUBLE SHOOTING REVEALED YAW SEMA FAILS IMPEDENCE TEST WITH Y IN AMBER ON PFD AND ACTUATOR ON CAD DURING AUTO PILOT TEST. REPLACED YAW SEMA IAW AMM MBB BK 117 C2 67-20-00, 4-14, 67-00-00,5-3 67-20-00,4-8. MTF COMPLETED OK IAW AMM 06-60-00, 6-1.

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