What happened
While operating in cruise flight, the pilot of a tailwheel-equipped airplane experienced a loss of engine power while performing a banner tow operation. In response to the power loss, the pilot released the banner and began an emergency descent toward a vacant school yard.
During the forced landing sequence, the aircraft's main landing gear struck a chain link fence that surrounded a tennis court at the school. The airplane subsequently touched down within the school yard and completed a ground roll of approximately 200 feet before coming to a stop in an upright position. The pilot was not injured.
The investigation
An examination of the aircraft fuel system was conducted following the accident. Investigators discovered water and solid contaminants present in both the gascolator and the carburetor bowl. Additionally, a winged insect was found trapped inside the transparent inline fuel filter.