# SDR QR9R2025091100002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 11, 2025
- Submitted: September 11, 2025
- 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: 9819
- Aircraft time: 3,426 hours
- System (JASC): [8000 · Engine Starting System](https://openairdocs.org/jasc/8000)
- Part: Switch
- Part number: 110UD01A1BB8A
- Condition: Faulty
- Location: Starter
- 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/QR9R2025091100002

## Discrepancy

NO RISE IN N1 WHEN STARTER ENGAGED. ALSO UNABLE TO GET A RISE IN N1 WHEN ENGAGING #1 VENT SWITCH. REMOVED AND REPLACED #2 ENGINE START SWITCH IAW AMM 80-10-01, 4-4. MOC SUCCESSFULLY COMPLETED.

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