NTSB Identification: CHI00LA274.
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Accident occurred Sunday, August 27, 2000 in ANDOVER, MN
Probable Cause Approval Date: 10/23/2001
Aircraft: Widner PIETENPOL AIRCAMPER, registration: N89JW
Injuries: 1 Minor.
NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.
The airplane was destroyed during a forced landing after a loss of engine power while in cruise flight. The pilot said that, at about 2 hours into the flight, he, "...heard, or felt a single jolt or retort. The plane continued to function normally. A short time later it began to smell 'hot' in the cockpit. Gauges were normal... Almost immediately I noted my cylinder head temperature had climbed to 400 [degrees] F." The pilot said that he subsequently saw blue smoke from the left side of the engine and it began to run rough. The pilot attempted to land in a "weed" field. He said that during the landing he, "...was approaching the trees at the end of the field so I side slipped to the ground striking the [right] wing, then the nose and coming to rest facing the direction I came from." The pilot reported that subsequent to the accident, he found that the number 4 cylinder and piston were damaged. He found the cylinder cracked and the piston skirt broken. He reported the extent of the damage to the aircraft as "destroyed". The pilot reported no other anomalies.
The National Transportation Safety Board determines the probable cause(s) of this accident to be: The trees and the unsuitable terrain for landing encountered during the forced landing. Factors were the side slip to avoid the trees initiated by the pilot, the fractured piston, and the cracked cylinder. Full narrative available
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