# SDR CA090506012

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 4, 2009
- Submitted: May 13, 2009
- Operation: General aviation
- Make and model: Piper PA-31-350
- Registry model: [Piper PA-31-350](https://openairdocs.org/model/piper-pa-31-350) (OpenAirDocs)
- Aircraft time: 14,906 hours
- Engine: Lyc LTIO540J2BD
- Propeller: Hartzl HCE3YR2A
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Cylinder
- Part number: TI0540J2BD
- Condition: Cracked
- Location: Engine
- Part time: 2,120 hours
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA090506012

## Discrepancy

(CAN) DURING ROUTINE MX, AN OIL LEAK WAS NOTICED AROUND THE NR 2 CYLINDER. FURTHER INVESTIGATION SHOWED A CRACK RUNNING FROM THE AREA OF THE CYLINDER BASE OUTWARDS AND DOWNWARDS ALONG THE FACE OF THE CYLINDER BASE MOUNTING AREA THERE ALSO APPEARS TO BE A MACHINING MARK RUNNING IN THE SAME AREA.

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