At 18:14 Moscow time, the An-24 departed from Stavropol Airport, and after reaching cruising altitude, the aircraft maintained a flight level of 2,400 meters, following an alternate route 29B (Gelendzhik—Tobechik—Lenino—Yemelyanovka—Simferopol).

[2] At 19:40, after 1 hour and 25 minutes and 31 seconds from the time of departure from Stavropol, both engines of the An-24 failed almost simultaneously, with a 3.5-second interval, and the propellers were automatically feathered.

The engine did not restart, but the attempt resulted in reverse thrust, causing the speed to drop to 186 km/h, and a left roll of 45° occurred.

The aircraft entered a critical angle of attack and began a deep spiral descent, with its forward speed increasing.

A pitching moment occurred, causing the crew to pull the control yokes fully back, which increased the angular velocity.

Recovery operations began on the day the wreckage was found and were conducted in almost zero visibility until November 18, when the left engine was recovered.

During flight tests, the first ice shedding (40 mm thick) into the engine occurred 1 minute or more after heating was activated and did not cause automatic feathering of the propeller.

On the test stand, ice shedding led to automatic feathering of the propeller 40–45 seconds after the engine's AIS was activated.