# SDR 97ZZZX2626

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 28, 1997
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N89PA](https://openairdocs.org/aircraft/N89PA), 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: 317952110
- System (JASC): [7922 · Engine Oil Temperature Regulator](https://openairdocs.org/jasc/7922)
- Part: Valve
- Part number: 53E19600
- Condition: Nut Loose
- Location: Thermo Bypass
- Part time: 872 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/97ZZZX2626

## Discrepancy

FOUND NUT LOOSE.  LYC SB 518C DOES NOT APPLY.  THIS VALVE ABOVE S/N LIST IN SB 518C.  USE VALVE MADE BY SUPERIOR.  IT HAS ROLL PIN TO HOLD NUT ON VALVE.

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