NTSB Identification: CHI07CA255.
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Accident occurred Friday, August 03, 2007 in Lapeer, MI
Probable Cause Approval Date: 10/31/2007
Aircraft: Buttles SNS-7, registration: N5HB
Injuries: 1 Uninjured.

NTSB investigators used data provided by various entities, including, but not limited to, the Federal Aviation Administration and/or the operator and did not travel in support of this investigation to prepare this aircraft accident report.

The flight made a forced landing following a loss of engine power. The pilot stated that about 7 minutes after takeoff while in cruise flight at 1,000 feet above ground level, the engine sputtered. He stated that he began a turn to return to the airport and as he turned about 90 degrees, the engine lost power completely. He said that he elected to land in a farm field and during the landing he struck trees at the approach end of the field. The pilot stated that he believed the engine failure was due to a blocked fuel vent on the main tank of the airplane. Subsequent examination of the airplane revealed no anomalies with regard to the airplane or its engine. The main fuel tank was found to be nearly full of fuel. The auxiliary fuel tank contained a small amount of fuel.

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

The fuel starvation for an undetermined reason, and the unsuitable terrain encountered during the forced landing. The trees were a factor.

Full narrative available

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