# SDR 95ZZZX2116

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 10, 1995
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N27343](https://openairdocs.org/aircraft/N27343), 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: 317752163
- System (JASC): [7922 · Engine Oil Temperature Regulator](https://openairdocs.org/jasc/7922)
- Part: Valve
- Part number: 53E19600
- Condition: Nut Missing
- Location: Thermo Bypass
- Part time: 1,100 hours
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/95ZZZX2116

## Discrepancy

DURING INSPECTION OF RIGHT ENGINE OIL VERNATHERM  PER LYCOMING SB 518A, FOUND RETAINING NUT MISSING FROM END OF VERNATHERM.  RETAINING NUT WAS RETRIEVED FROM ENGINE OIL COOLER.

---
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.