# SDR M3XA20201019006

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 19, 2020
- Submitted: October 20, 2020
- Operation: Air carrier
- Aircraft: [N836CS](https://openairdocs.org/aircraft/N836CS), registered now
- Make and model: Urocop EC 135 P2
- Registry model: [Urocop EC 135 P2](https://openairdocs.org/model/eurocopter-deutschland-ec-135-p2) (OpenAirDocs)
- Aircraft serial: 1104
- Aircraft time: 2,924 hours, 8,731 cycles
- System (JASC): [7921 · Engine Oil Cooler](https://openairdocs.org/jasc/7921)
- Part: Bypass Valve
- Part number: L792M2002102
- Part serial: 22394
- Condition: Failed
- Location: Engine Oilcooler
- Part time: 2,924 hours, 8,731 cycles
- Stage of operation: CR
- 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/M3XA20201019006

## Discrepancy

PILOT PERFORMED A PL WITH A PATIENT ON BOARD AND REPORTED NR 2 ENGINE OIL TEMPERATURE ABOVE NORMAL LIMITS IN FLIGHT, PEAKED AT 134 DEGREES.  MECHANIC INSPECTED ENGINE CHIP DETECTORS, DRAINED AND RESERVICED ENGINE OIL AND REPLACED NR 2 ENGINE OIL BYPASS VALVE.  PERFORMED MOC AND OIL LEAK CHECK, NO DEFECTS NOTED.

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