# SDR 97ZZZX609

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 24, 1997
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N7164D](https://openairdocs.org/aircraft/N7164D), 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: 318052013
- Engine: Lyc LTIO540J2BD
- System (JASC): [8520 · Reciprocating Engine Power Section](https://openairdocs.org/jasc/8520)
- Part: Connecting Rod
- Part number: LW1064619332
- Condition: Broken
- Location: Nr 5 Cyl
- Stage of operation: CR
- Nature of condition: E, R, K
- Precautionary procedure: E
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/97ZZZX609

## Discrepancy

PRELIMINARY REPORT - PRECAUTIONARY ENGINE SHUTDOWN FOR VIBRATION, NOISE, AND LARGE QUANTITY OF OIL TRAILING FROM COWLING.  SUBSEQUENT EXAMINATION INDICATES THAT THE NR 5 CYLINDER, PISTON CONNECTING ROD, P/N LW 10646 19332, FAILED BELOW THE PISTON PIN.  THE RESULTING IMPACT FORCES THEN CAUSED SEPARATION OF THE NR 5 CYLINDER ASSY FROM THE CRANKCASE ASSY.

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