# SDR 20000802SH020

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 10, 2000
- Submitted: August 2, 2000
- Operation: Air carrier
- Aircraft: [N793DS](https://openairdocs.org/aircraft/N793DS), registered now
- Make and model: Cessna 337F
- Registry model: [Cessna 337F](https://openairdocs.org/model/cessna-337f) (OpenAirDocs)
- Aircraft serial: 33701326
- Engine: Cont IO360C
- System (JASC): [7910 · Engine Oil Storage (Airframe Furnished)](https://openairdocs.org/jasc/7910)
- Part: Valve
- Part number: B51000AH300
- Condition: Leaking
- Location: Seal Oil Drain
- Part time: 260 hours
- Stage of operation: IN
- How discovered: V
- Nature of condition: K
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/20000802SH020

## Discrepancy

AIRCRAFT REAR ENGINE WAS FOUND TO HAVE OIL LEAK WHICH WS TRACED TO FAILED SEAL IN P/N B51000AH300, OIL SUMP DRAIN VALVE.  POSSIBLY CAUSED BY HIGH HEAT RADIATION FROM THE SURROUNDING, P/N 1555001-1, MUFFLER.  SUBMITTER RECOMMENDED FREQUENT REPLACEMENT OF P/N BJ1000AH300 DRAIN VALVE DUE TO ITS CLOSE PROXIMITY OF THE MUFFLER.  (X)

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