# SDR QR9R20210616001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 16, 2021
- Submitted: June 16, 2021
- 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: 9107
- Aircraft time: 3,019 hours
- System (JASC): [2420 · AC Generation System](https://openairdocs.org/jasc/2420)
- Part: Transformer
- Part number: FSC211
- Condition: Failed
- Location: Current
- Stage of operation: HO
- How discovered: V
- Nature of condition: J
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/QR9R20210616001

## Discrepancy

GENERATOR SPLIT GREATER THAN 10 AMPS. INDICATIONS WERE NORMAL AT IDLE, THEN ONCE AT FLY #1 GENERATOR SHOWED 10 AMPS WHILE #2 SHOWED 75 AMPS. AVIONICS RESET DID NOT RESOLVE ISSUE. WHILE TROUBLESHOOTING AIRCRAFT, DETECTED FLUCTUATION ON #1 ENGINE OF 5 AMPS TO 35 AMPS ON BOTH THE AMP METER ALONG WITH THE VEMD, WHILE #2 WAS STEADY AT 35 AMPS INDICATING THAT THE #1 CURRENT TRANSFORMER WAS BAD.

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