# SDR CA030328007

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 14, 2003
- Submitted: April 14, 2003
- Operation: Air carrier
- Make and model: Piper PA-31-350
- Registry model: [Piper PA-31-350](https://openairdocs.org/model/piper-pa-31-350) (OpenAirDocs)
- Aircraft time: 16,484 hours
- Engine: Lyc TIO540J2BD
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Piston
- Condition: Melted
- Location: Rt Engine
- Stage of operation: CR
- How discovered: O
- Nature of condition: E, K
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA030328007

## Discrepancy

(CAN) DURING FLIGHT THE PILOT NOTICED AN OIL LEAK COMING FROM THE RT ENGINE. INVESTIGATION FOR THE CAUSE REVEALED THAT CYLINDER NR 5 HAD NO COMPRESSION. ONCE THE ENGINE WAS REMOVED, WE NOTICED THAT THE PISTON MELTED AND HAD BROKEN SEGMENTS. WE REPLACED THE CYLINDER, PERFORMED A GROUND RUN AND EVERYTHING SEEMED NORMAL.

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