The cause of the crash of the Mi-8 helicopter, which belonged to the Ministry of Defense of the Russian Federation, near Vladikavkaz, according to preliminary data, was a sharp deterioration in weather conditions. There was heavy fog in the area at the time the helicopter crashed. Other versions of the disaster include a helicopter engine failure. It is known that 4 people survived the helicopter crash, the rest died. However, there is still no clear data as to exactly how many people - 15 or 16 - were on board.