# SDR 97ZZZX2708

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 14, 1997
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N739ZL](https://openairdocs.org/aircraft/N739ZL), registered now
- Make and model: Cessna 172N
- Registry model: [Cessna 172N](https://openairdocs.org/model/cessna-172n) (OpenAirDocs)
- Aircraft serial: 17270936
- Engine: Lyc O320H2AD
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Piston Pin
- Part number: SL134441
- Condition: Failed
- Location: Engine Cylinder
- Stage of operation: CL
- Nature of condition: Y
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/97ZZZX2708

## Discrepancy

CATASTROPHIC FAILURE AFTER TAKEOFF FROM CLEAR LAKE, CA ON 5-14-97.  PILOT TURNED BACK AND MADE UNPOWERED LANDING AT AIRPORT.  FOUND CYLINDER BROKEN OFF ENGINE.  PISTON BROKEN, CRANKSHAFT BROKEN.  PISTON PIN BROKEN IN HALF.

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