Accident Summary
During the initial climb after takeoff, the engine experienced a loss of power, operating at between 1500 and 1800 RPM. The ensuing forced landing roll concluded when the airplane collided with a fence and came to rest in a ditch.
Engine Examination
Post-accident examination of the engine by safety board investigators revealed several discrepancies. The number two and four top spark plugs exhibited lead fouling. The wiring harness plug lead on the number three bottom spark plug was found to be loose. The right exhaust pipe was corroded and deteriorated, showing evidence of leakage at its connection to the muffler. Additionally, burnt areas on the number one cylinder fins around the exhaust gasket indicated leakage.
Maintenance History
According to the owner/pilot, the airplane last underwent an annual inspection three months and 73 flight hours prior to the accident.
Forced Landing
After the power loss, the pilot executed a forced landing. During the landing roll, the airplane struck a fence and subsequently came to rest in a ditch.