What happened
The incident occurred immediately after takeoff while the aircraft was climbing at a low altitude of approximately two to three meters. During this initial climb phase, the airframe experienced an aerodynamic stall. Because the landing gear had already been retracted, the machine impacted the terrain on its belly. The violent contact sheared off the propeller from the right-hand engine. A detached blade penetrated the fuselage and entered the passenger cabin, resulting in the death of one occupant.
Following the initial impact, the wreckage slid for several hundred yards along the ground. During this slide, the left wing and the left engine were torn away from the airframe. The aircraft finally came to rest 491 meters beyond the end of the runway. In addition to the fatality, five passengers sustained injuries. The airframe was declared a total loss.
Findings
The official investigation attributed the accident to a lack of coordination among the flight crew members. It was determined that the flight engineer inadvertently reduced engine power shortly after liftoff. This action caused the airspeed to drop below the stall threshold, leading to the loss of lift. The captain's insufficient training was also identified as a contributing factor to the event.