Accident Sequence
Approximately 15 minutes after takeoff, the aircraft was climbing through 2,800 feet mean sea level when the pilot retarded the throttle to climb power. At that moment, the engine ceased operation. The pilot selected an open field for a forced landing but, during the approach, the aircraft collided with trees.
Examination Findings
Post-accident examination of the engine revealed four broken teeth on the crankshaft drive gear. The failure of this gear caused the loss of all engine-driven accessories, leading to the loss of engine power.
Occupants and Injuries
A medical patient being transported on an unapproved litter—installed in place of the right middle and rear seats—struck the back of the right front seat during the accident and sustained injuries.