# SDR 95ZZZX6740

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 17, 1995
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N47907](https://openairdocs.org/aircraft/N47907), registered now
- Make and model: Piper PA-28-181
- Registry model: [Piper PA-28-181](https://openairdocs.org/model/piper-pa-28-181) (OpenAirDocs)
- Aircraft serial: 287890150
- System (JASC): [7922 · Engine Oil Temperature Regulator](https://openairdocs.org/jasc/7922)
- Part: Valve
- Part number: 75944
- Condition: Defective
- Location: Thermo Bypass
- Part time: 1,675 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/95ZZZX6740

## Discrepancy

INSPECTION OF VERNATHERM VALVE PER SB FOUND VALVE UNSERVICEABLE.  SUBMITTER STATED 80 PERCENT OF THESE VALVES INSPECTED HAVE FAILED SB S18B.  SUBMITTER RECOMMENDS TO HAVE AN AD ADDRESS THIS.

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