What happened
During the flight, a critical mechanical failure occurred when a single propeller blade broke away from the engine. This failure triggered intense vibrations throughout the airframe, which eventually caused the entire engine to detach from its mounting hardware.
As the aircraft became unstable following the loss of the engine, the crew and all passengers made the decision to exit the aircraft via parachute. All seven occupants successfully performed a bailout before the plane descended into a field. The impact with the ground resulted in the total destruction of the aircraft.
Findings
Following the incident, it was determined that the primary sequence of events began with the structural failure of a propeller blade. This initial breakage led to the subsequent detachment of the engine from its mounts due to extreme vibration.