What happened
The aircraft departed from runway 18, lifting off at a point further down the runway than witnesses were accustomed to seeing it rotate. Shortly after liftoff, the airplane began striking trees along its flight path, which resulted in the aircraft descending onto the ground.
An examination of the scene revealed that a chemical dump had been left on the runway, approximately 130 feet north of the departure end of the runway.
Findings
The autopsy of the pilot revealed myocarditis of the left ventricle of the heart, as well as hardening of the kidney's arteries. According to the pathologist, the myocarditis may have caused an arrhythmia, which potentially led to the pilot losing consciousness. Additionally, the FAA's toxicological report identified an unstated amount of norpropoxyphene in the pilot's urine sample.