# SDR AU510001444

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 6, 2005
- Submitted: June 6, 2006
- Operation: General aviation
- Make and model: Piper PA-31-350
- Registry model: [Piper PA-31-350](https://openairdocs.org/model/piper-pa-31-350) (OpenAirDocs)
- Engine: Lyc LTIO540J2BD
- System (JASC): [7922 · Engine Oil Temperature Regulator](https://openairdocs.org/jasc/7922)
- Part: Bypass Valve
- Part number: 53E22144A
- Condition: Disintegrated
- Location: Engine Oil Temp
- Part time: 138 hours
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AU510001444

## Discrepancy

(AUS) RH ENGINE OIL BYPASS VALVE (VERNATHERM) BREAKING UP IN AREA OF CIRCLIP RING. METAL CONTAMINATION OF OIL SYSTEM. (OTHER CAUSE: MATERIAL ) (CASA# 510001444)

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