On 28 July 1962 the Antonov An-10 operating the route crashed near Gagra, Abkhaz ASSR, Georgian SSR, killing all 81 passengers and crew on board.

[1] The aircraft involved in the accident was an Antonov An-10A with four Ivchenko AI-20K engines, registered CCCP-11186 to the Ukraine division of Aeroflot.

The cockpit crew consisted of the following:[3] Nuclear physicist Natan Yavlinsky, designer of tokamak devices, was on the flight with his family.

At 15:29 the crew of the An-10 contacted air traffic control and were instructed to proceed on a bearing of 240° and given information regarding the weather; mild winds at 3–4 m/s were present.

The controller failed to inform the flight crew about the cloudcover at approximately 600 meters on the mountains nearby.