What happened
During a night flight from Khatanga to Moscow-Domodedovo Airport, a four-engine aircraft experienced a sudden and uncontrolled descent while cruising at an altitude of 7,800 meters. Despite favorable weather conditions at the time of the incident, the aircraft's speed increased to 850 km/h. This rapid acceleration was followed by a significant left roll of 60 degrees and a nose-down pitch of 42 degrees.
As the descent continued, the aircraft experienced structural failure, leading to the loss of several components and partial disintegration mid-air. The wreckage eventually impacted a snow-covered field situated approximately 15 km southeast of Kalyazin. The impact resulted in the total destruction of the aircraft and 27 fatalities, with no survivors among the occupants.