# SDR 95ZZZX2429

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 26, 1995
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: N684JJ
- Make and model: Piper PA-31-350
- Registry model: [Piper PA-31-350](https://openairdocs.org/model/piper-pa-31-350) (OpenAirDocs)
- Aircraft serial: 317952194
- Engine: Lyc TIO540J2BD
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Cylinder
- Part number: LW12966
- Condition: Holed
- Location: Nr 1
- Stage of operation: AP
- Nature of condition: E, K
- Precautionary procedure: A, E
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/95ZZZX2429

## Discrepancy

DURING AN APPROACH TO LANDING, PILOT REPORTED A VIBRATON IN THE LEFT ENGINE AND OIL LEAKING FROM COWLING.  A PRECAUTIONARY SHUT DOWN MADE AND PILOT MADE AN UNEVENTFUL LANDING.  INSPECTION REVEALED A HOLE IN NR 1 CYLINDER UNDER THE INTAKE PUSH ROD HOUSING.  THE HOLE ALLOWED EXHAUST GASES TO BURN A HOLE IN THE PUSH ROD HOUSING ALLOWING OIL LEAKAGE, AND THE PUSH ROD TO BREAK.  SUBMITTER SUGGESTED PROBLEM MAY HAVE BEEN DUE TO A POOR WELD.

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