# SDR M3XA20231216002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 16, 2023
- Submitted: December 18, 2023
- Operation: Air carrier
- Aircraft: [N135WL](https://openairdocs.org/aircraft/N135WL), 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: 1083
- Aircraft time: 6,792 hours, 26,096 cycles
- System (JASC): [7921 · Engine Oil Cooler](https://openairdocs.org/jasc/7921)
- Part: Bypass Valve
- Part number: L792M2002102
- Part serial: 24448
- Condition: Unserviceable
- Location: Oil Cooler
- Part time: 1,089 hours, 22,068 cycles
- Stage of operation: CR
- How discovered: V
- Nature of condition: J, M
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/M3XA20231216002

## Discrepancy

PILOT REPORTED #1 ENGINE OIL TEMPERATURE EXCEEDANCE OF 129.5.  PLACED THE #1 ENGINE TO IDLE AND EXECUTED A SUCCESSFUL PRECAUTIONARY LANDING WITH A PATIENT ON BOARD TO KROA AIRPORT.  THE PATIENT WAS TRANSPORTED BY GROUND.  THE MECHANIC REPLACED THE #1 ENGINE OIL COOLER BYPASS VALVE PN L792M2002102 AND UNSCHEDULED MAINTENANCE PER PRATT AND WHITNEY EMM CH. 05-50-00.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.