# SDR CA090918006

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 16, 2008
- Submitted: December 1, 2009
- Operation: General aviation
- Make and model: Beech D18S
- Registry model: [Beech D18S](https://openairdocs.org/model/beech-d18s) (OpenAirDocs)
- Aircraft time: 8,351 hours
- Engine: Pwa R985AN14B
- System (JASC): [8550 · Reciprocating Engine Oil System](https://openairdocs.org/jasc/8550)
- Part: Plunger
- Part number: 1139
- Condition: Worn
- Location: Relief Valve
- Part time: 1,394 hours
- Stage of operation: CR
- How discovered: O
- Nature of condition: P
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA090918006

## Discrepancy

(CAN) THE ACFT MADE AN UNSCEDULED LANDING WHEN THE OIL PRESSURE PLUNGER BECAME JAMMED IN THE BODY OF THE OIL PRESURE RELIEF VALVE CAUSING A LOSS OF OIL PRESSURE.  MX REPLACED THE PLUNGER AND THE ENGINE WAS RETURNED TO SERVICE.

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