# SDR 98ZZZX1715

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 23, 1998
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N29274](https://openairdocs.org/aircraft/N29274), registered now
- Make and model: Piper PA-28-181
- Registry model: [Piper PA-28-181](https://openairdocs.org/model/piper-pa-28-181) (OpenAirDocs)
- Aircraft serial: 287990442
- Engine: Lyc O360A4M
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Piston
- Part number: AL75089
- Condition: Cracked
- Location: Nr 3 Cylinder
- Part time: 498 hours
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/98ZZZX1715

## Discrepancy

DURING A ROUTINE OIL CHANGE, THE SUMP SCREEN WAS INSPECTED, FOUND A PEA SIZE PIECE OF CAST ALUMINUM.  IT TURNED OUT TO BE A PIECE OF CYLINDER NR 3 PISTON SKIRT.  ALSO, FROM THIS BROKEN-OUT PIECE, FROM THE CENTER OF THE BREAK, WAS A .50 INCH CRACK RADIATING UP TOWARD THE PISTON HEAD.  ENGINE WAS OVERHAULED IN SEPTEMBER, 1994.  TSMOH IS 498.0 HOURS.  BROKEN AREA WAS APPROXIMATELY 90 DEGREES TO PISTON PIN BORE.

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