NTSB Identification: NYC01LA220.
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Accident occurred Monday, September 03, 2001 in Chesapeake, VA
Probable Cause Approval Date: 05/01/2003
Aircraft: Andre Mini Max 1500R, registration: N962JA
Injuries: 1 Uninjured.
NTSB investigators may have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.
The pilot descended from 5,500 feet to 1,500 feet, at a moderate cruise power setting, at 5,500 rpm. About 1,500 feet above the ground, the two cycle 2-cylinder engine lost all power, and the pilot performed a forced landing to a field. The pilot believed that the descent at cruise power created a lean fuel/air mixture. Examination of the engine revealed scoring on both pistons, which was directly in line with the exhaust. According to a representative from the engine manufacturer, that type of failure was indicative of a heat seizure, normally associated with an excessive exhaust gas temperature, exceeding 1200 degrees F. The representative assumed that the engine was operating in a lean condition. According to the manufacturer's engine manual, during cruise and descents, it was very important that to avoid creating a lean mixture condition with high rpm and low throttle opening. Additionally, the manual warned that the engine was subject to sudden stoppage, and conformed to no aircraft standards.
The National Transportation Safety Board determines the probable cause(s) of this accident to be: The pilot's failure to follow the engine manufacturer's descent procedure, which resulted in a lean mixture condition and subsequent engine seizure. Full narrative available
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