Accident
Shortly after departing from Shyganak, a passenger entered the cockpit and sat with both pilots. After the cockpit door was closed, the aircraft began unusual maneuvers. At an altitude of 150 meters, the crew changed heading to 270 degrees. Three minutes after takeoff, the airplane crashed in a desert area two kilometers west of the village.
Victims
Four passengers sustained serious injuries in the crash. Six other occupants, including both pilots, were killed. Several hours later, three of the four survivors died from their injuries.
Investigation
The official investigation determined that the accident resulted from poor flight organization. The crew allowed a passenger to enter the cockpit without official permission. In unclear circumstances, the crew initiated unusual maneuvers and set full power on the engine, which may have partially drowned. The airplane pitched down to 5 degrees, then banked right to an angle of 40 degrees. It struck the ground at a speed of 210 to 220 km/h and came to rest 110 meters further.