# SDR QR9R2026070900001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 9, 2026
- Submitted: July 9, 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: 9109
- Aircraft time: 5,534 hours
- System (JASC): [2421 · AC Generator-Alternator](https://openairdocs.org/jasc/2421)
- Part: Sensor
- Part number: FSC211
- Part serial: 2876
- Condition: Fluctuates
- Location: Generator
- Stage of operation: TX
- How discovered: O
- Nature of condition: F
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/QR9R2026070900001

## Discrepancy

GEN NR 1 FAILED DURING REFUEL, GENERATOR AMP NOT WITHIN FIVE. ERRATIC AMP FLUCTUATIONS DURING MTF OF 15 TO 20 AMP DIFFERENCE BETWEEN #1 AND #2 WITH #1 BEING THE FAULT SIDE. #2 WAS STABLE DURING FLIGHT AND VOLTAGE ON BOTH WERE 28.6 STEADY. REMOVED AND REPLACED HALL SENSOR; T/P MOC COMPLETED SUCCESSFULLY.

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