# SDR QR9R2026110500003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 5, 2026
- Submitted: November 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: 9790
- Aircraft time: 4,316 hours
- System (JASC): [2421 · AC Generator-Alternator](https://openairdocs.org/jasc/2421)
- Part: Sensor
- Part number: FSC211
- Part serial: 2987
- Condition: Out Of Limits
- Location: Generator
- 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/QR9R2026110500003

## Discrepancy

GEN AMPS SYSTEM 1 WOULD NOT STABILIZE DURING START RUN-UP. TROUBLESHOOTING REVEALED #1 HALL SENSOR WAS BAD. 15 AMP DIFFERENCE BETWEEN THE VEMD AND AMPS READ ON MULTIMETER. REMOVED AND REPLACED HALL SENSOR IAW AMM 24-30-00, 4-6. T/P MOC SUCCESSFULLY COMPLETED.

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