Incident Overview
During cruise flight, the pilot switched fuel tanks to balance the fuel load. Immediately after switching, the engine began to run roughly. The pilot returned the fuel selector to the original tank, and the engine resumed normal operation. He decided not to attempt switching tanks again.
Fuel Situation
The fuel supply in the single usable tank was insufficient to reach the destination airport. The pilot was unable to locate another suitable airport for landing and elected to perform a precautionary landing in a field.
Landing and Damage
During the landing roll, the airplane encountered soft terrain, causing the landing gear to collapse. The collapse resulted in damage to the wing spar.
Aircraft Status
The airplane was not registered and did not possess an airworthiness certificate. Records indicate that the last annual inspection was performed on January 6, 1992.
Pilot Reporting
The pilot was interviewed on the first day following the incident but did not respond to subsequent requests for completion of the Pilot/Operator Aircraft Accident Report.