# SDR QR9R20211012006

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 12, 2021
- Submitted: October 12, 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: 08720759252
- Aircraft time: 2,685 hours
- System (JASC): [2435 · Starter-Generator](https://openairdocs.org/jasc/2435)
- Part: Starter Gen
- Part number: 23081072
- Part serial: P2942
- Condition: Warning Message
- Stage of operation: CR
- How discovered: V
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/QR9R20211012006

## Discrepancy

FLT 2 PRECAUTIONARY LANDING DURING FLIGHT , BATTERY DISCHARGE CAUTION ILLUMINATED, CHECKED INSTRUMENTS, 1 AT 85 AMPS; GEN 2 AT -0.5 AMPS, PERFORMED EP FOR GEN 2 FAILURE. DURING TROUBLESHOOTING, FOUND #2 STARTER GENERATOR FAILS TO TURN DURING START UP. REMOVED AND REPLACED STARTER GENERATOR IAW AMM 24-30-00, 4-2. MOC COMPLETED IAW AMM 05-60-00, 6-12.

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