What happened
Shortly after takeoff, the aircraft encountered difficulties as it flew over trees located aft of the end of the runway. A passenger reported that the stall warning light illuminated during this phase of flight. The aircraft initially climbed slightly before descending rapidly to the ground, impacting left wing and nose first.
The investigation
Examination of the engine revealed a critical mechanical failure: the interior cone assembly of the muffler was loose, effectively blocking the exhaust port. This obstruction likely contributed to the loss of power or performance during the critical climb phase.
Findings
The aircraft was operating in excess of its certified limits. The computed gross weight at the time of the accident was 2,219 pounds, which exceeded the maximum gross allowable weight of 2,150 pounds. This overweight condition, combined with the mechanical failure, compromised the aircraft's ability to maintain flight.
Safety message
Pilots must ensure that the aircraft is not operated beyond its certified weight and balance limits. Proper pre-flight weight calculations are essential to maintaining adequate performance margins, especially during takeoff and initial climb.