Accident Overview
Shortly after takeoff, while climbing through approximately 250 feet mean sea level, the engine experienced a near total loss of power. The pilot initiated a turn to land on a beach but found it unsuitable. He then initiated another turn to land downwind. When the flight was about 100 feet above ground level, the airplane stalled. The airplane impacted the runway nose and left wing low, collapsing the nose and left main landing gear.
Post-Accident Examination
Examination of the flight controls revealed no evidence of preimpact failure or malfunction. Examination of the engine revealed that one of the two counterweights had separated from the crankshaft for undetermined reasons. The aircraft, engine, and propeller logbooks were not located.
Engine History
The owner stated that the engine was overhauled in January or February 1993 by an airframe and powerplant mechanic with inspection authorization. At the time of the accident, the engine had accumulated about 100 hours since overhaul. Review of paperwork provided by the pilot revealed that counterweight hardware—including two lock rings, four pins, and eight bushings—was ordered and shipped to Precision Engine in Washington, North Carolina, on February 1, 1993.