NTSB Identification: MIA95IA243.
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Incident occurred Sunday, September 10, 1995 in NEW SMYRNA BCH, FL
Probable Cause Approval Date: 02/28/1997
Aircraft: PIPER PA-28-161, registration: N150ER
Injuries: 3 Uninjured.

NTSB investigators used data provided by various sources and may not have traveled in support of this investigation to prepare this aircraft incident report.

During an instructional flight, the flight instructor (CFI) retarded the throttle to idle to simulate an engine failure. The exercise was discontinued at about 500 feet with application of full power. While climbing through about 1,100 feet, the engine suddenly began to run rough, and the tachometer indicated 2,000 rpm. Attempts to restore engine power were unsuccessful. The CFI took the controls and landed uneventfully at a nearby airport. Examination of the engine revealed that a piston and piston pin in the #2 cylinder had failed. Metallurgical examination of the failed components revealed that both failed due to fatigue. The failed components had accumulated about 316.9 hours since installation during a major engine overhaul.

The National Transportation Safety Board determines the probable cause(s) of this incident to be:

fatigue failure of the piston assembly (piston and piston pin).

Full narrative available

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