Accident Sequence
Following takeoff, the aircraft climbed to approximately 50 feet above ground level. The pilot attempted to accelerate by lowering the nose on two occasions, each time resulting in a loss of altitude. Subsequently, the aircraft banked to the right and collided with trees about 1,500 feet from the runway departure end. Impact occurred within a residential backyard. The passenger managed to escape the wreckage but was unable to rescue the pilot before fire engulfed the cabin.
Engine Findings
A post-accident engine run was performed and proved successful; however, it failed to achieve the required airflow and RPM test points. Disassembly of the engine disclosed corrosion throughout the components, indicating prolonged periods of inactivity. Evidence of multiple worn parts and metal contamination was also present. Compression readings for cylinders 1 through 4 were 65/80, 75/80, and 69/80, respectively. The left magneto timing was measured at 24.5 degrees before top center, compared to the specified timing of 20 degrees before top center.
Maintenance History
An annual inspection had been completed on April 5, 1990. The investigation determined that the engine was not capable of producing rated power due to mechanical inefficiency and because wear limits had been exceeded.