# SDR 20000412SH039

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 23, 2000
- Submitted: April 12, 2000
- Operation: General aviation
- Aircraft: [N137JH](https://openairdocs.org/aircraft/N137JH), registered now
- Make and model: Piper PA-31-350
- Registry model: [Piper PA-31-350](https://openairdocs.org/model/piper-pa-31-350) (OpenAirDocs)
- Aircraft serial: 318252025
- Engine: Lyc LTIO540J2BD
- System (JASC): [7922 · Engine Oil Temperature Regulator](https://openairdocs.org/jasc/7922)
- Part: Vernatherm
- Part number: 53E19600
- Part serial: 49845
- Condition: Damaged
- Location: Oil Temp Regulator
- Stage of operation: NR
- How discovered: O
- Nature of condition: R, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/20000412SH039

## Discrepancy

PILOTS REPORTED ENGINE NOT MAKING FULL POWER AND OIL PRESSURE LOW.  MAINTENANCE FOUND A PIECE OF CLIP UNDER THE OIL PRESSURE RELIEF VALVE.  THE RETAINING CLIP FOR THE VERNATHERM VALVE FOUND TO BE THE SOURCE.  FOUR NEW VERNOTHERM VALVES INSTALLED. (X)

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