# SDR WVBA122810A

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 11, 2010
- Submitted: December 29, 2010
- Operation: Air carrier
- Aircraft: [N27755](https://openairdocs.org/aircraft/N27755), 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: 317852148
- Aircraft time: 27,802 hours
- Engine: Lyc LTIO540J2BD
- Engine time: 4,542 hours
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Gasket
- Part number: 66732
- Condition: Misinstalled
- Location: Nr 2 Engine
- Stage of operation: NR
- How discovered: O
- Nature of condition: W, K
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/WVBA122810A

## Discrepancy

AIRCRAFT WRITTEN UP BY PIC FOR LARGE OIL LEAK, NR 2 ENGINE.  INSPECTION REVEALED NR 3 CYLINDER (P/N LW-12966) HAD A GASKET (P/N 66732) INSTALLED INCORRECTLY UNDER ROCKER SHAFT COVER (P/N 72710).  COVER IS SECURED WITH 2 SCREWS (P/N 72709).  THIS ENGINE WAS RECEIVED FROM LYCOMING AS A FACTORY REMANUFACTURED UNIT AND ACCUMULATED ONLY 44.7 HRS TIS UNTIL LEAK WAS DISCOVERED.  AFFECTED PARTS WERE INSTALLED BY MANUFACTURER AND NOT DISTURBED BY COMPANY PERSONNEL UNTIL DEFECT WAS DISCOVERED.

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