# SDR NSVA2010186

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 14, 2010
- Submitted: October 18, 2010
- Operation: Air carrier
- Aircraft: N321CJ
- Make and model: Saab 340B
- Registry model: [Saab 340B](https://openairdocs.org/model/saab-340b) (OpenAirDocs)
- Aircraft serial: 321
- Aircraft time: 36,000 hours, 36,801 cycles
- System (JASC): [7900 · Engine Oil System (Airframe Furnished)](https://openairdocs.org/jasc/7900)
- Part: Seal
- Condition: Damaged
- Location: Oil System
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/NSVA2010186

## Discrepancy

LEFT MASTER CAUTION ILLUMINATED ON TAKEOFF BUT QUICKLY EXTINGUISHED.  DURING EN ROUTE CLIMB THE LEFT ENGINE OIL PRESSURE STARTED TO FLUCTUATE 40-50 PSI INTO THE YELLOW ARC.  CAPTAIN ELECTED TO RETURN TO FIELD AS A PRECAUTION. CAPTAIN INFORMED DISPATCH THROUGH ARINC PHONE PATCH.  MX REPLACED THE AXIS BB PLAIN SEAL.

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