# SDR QR9R2025011700001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 17, 2025
- Submitted: January 17, 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: 15723759754
- Aircraft time: 4,033 hours
- System (JASC): [6340 · Rotor Drive Indicating System](https://openairdocs.org/jasc/6340)
- Part: Transducer
- Part number: ZRB26300
- Condition: Fluctuates
- Location: Oil Pressure
- Stage of operation: CR
- How discovered: V
- Nature of condition: G
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/QR9R2025011700001

## Discrepancy

FOUR SEPARATE EVENTS OF #2 XMSN OIL PRESSURE FLUCTUATION IN FLIGHT BELOW 1.5 BAR AND AS LOW AS 0.7. NO ASSOCIATED WARNING OR CAUTION LIGHTS. REMOVED AND REPLACED #2 TRANSMISSION PRESSURE TRANSDUCER IAW AMM 63-41-00, 4-4.

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