# SDR QR9R2024052300001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 23, 2024
- Submitted: May 23, 2024
- 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: 10721779430
- Aircraft time: 3,890 hours
- System (JASC): [2421 · AC Generator-Alternator](https://openairdocs.org/jasc/2421)
- Part: Transformer
- Part number: FSC211
- Part serial: 1367
- Condition: Malfunctioned
- Location: Nr 1 Generator
- Stage of operation: TX
- How discovered: O
- Nature of condition: J
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/QR9R2024052300001

## Discrepancy

DURING PRE TAKE OFF CHECK, GEN AMPS ON #1 SIDE FLUCTUATED BETWEEN 15-30 AMPS CAUSING A SPLIT IN GEN AMPS GREATER THAN 10. #2 GEN CONSTANTLY STAYED AT 35 AMPS. TEST PILOT EVALUATION FOUND GEN 1 AMPS INDICATED 20, GEN 2 INDICATED 40. REMOVED AND REPLACED TRANSFORMATOR; MOC SUCCESSFULLY COMPLETED.

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