What happened
An unauthorized flight involving an Antonov An-26 began at the Kubinka Air Force Base when a flight engineer took control of the parked aircraft without authorization. The aircraft remained airborne for over four hours, performing several circles over the surrounding region at altitudes ranging from 300 to 2,000 feet.
During the flight, the aircraft lost stability and entered an uncontrolled descent. The plane eventually struck the ground in a field situated in the Lyakhovo area. The sole occupant of the aircraft, the pilot in command, was killed in the impact.
Findings
Preliminary evidence suggests that the crash was a result of fuel exhaustion, which caused both engines to cease operation during the flight.