# SDR 3EJA202603240001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 4, 2026
- Submitted: March 24, 2026
- Operation: Air carrier
- Aircraft: [N739JS](https://openairdocs.org/aircraft/N739JS), registered now
- Make and model: Cessna 525B
- Registry model: [Cessna 525B](https://openairdocs.org/model/cessna-525b) (OpenAirDocs)
- Aircraft serial: 525B0045
- Aircraft time: 13,013 hours, 8,893 cycles
- System (JASC): [7920 · Engine Oil Distribution (Airframe Furnished)](https://openairdocs.org/jasc/7920)
- Part: Oil Cooler
- Part number: 121535
- Part serial: FC0993
- Condition: Failed
- Location: Lt Engine
- Part time: 177 hours, 134 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: E
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/3EJA202603240001

## Discrepancy

RECEIVED RED OIL PRESSURE INDICATION (POINTER AND DIGITS) LEFT ENGINE IN FLIGHT. SHUT DOWN LEFT ENGINE, DECLARED AN EMERGENCY AND DIVERTED TO KCHS. FOLLOWED CHECKLIST PAGES D4 LOW OIL PRESSURE INDICATION, A2 ENGINE FAILURE/SHUTDOWN AND Y1 SINGLE ENGINE APPROACH AND LANDING. LANDED WITHOUT INCIDENT.  REMOVED LEFT ENGINE OIL COOLER  AND REPLACED WITH REPAIRED UNIT.

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