# SDR QR9R2025011500002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 15, 2025
- Submitted: January 15, 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: 07720199147
- Aircraft time: 4,422 hours
- System (JASC): [2612 · Fire Detection](https://openairdocs.org/jasc/2612)
- Part: Fire Detector
- Part number: 9550165470
- Condition: Failed
- Location: Zone 200
- 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/QR9R2025011500002

## Discrepancy

DURING RUN-UP, ENG FIRE AUDIO INTERMITTENTLY ACTIVATING WITH NO OTHER INDICATION OF A FIRE. TROUBLESHOOTING REVEALED ENG MOUNTED FIRE DETECTOR FAILED RESISTANCE CHECKS. REMOVED AND REPLACED FIRE DETECTOR.

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