The 1969 Yukhnov mid-air collision occurred when an Ilyushin Il-14M, operating as Aeroflot Flight 831, a scheduled domestic passenger flight from Moscow-Bykovo Airport to Simferopol Airport, Crimea collided in the air on 23 June 1969 with an Antonov An-12BP of the Soviet Air Force over the Yukhnovsky district of Kaluga Oblast, in the Russian SFSR of the Soviet Union.

The Antonov An-12 belonging to the Soviet Air Force that was involved in the accident (callsign 08525) was part of a formation of four aircraft demonstrating tactical flight maneuvers to the Minister of Defense, Andrei Grechko.

Two of the aircraft were transporting equipment; the other two, including the one involved in the crash, was carrying paratroopers of the 7th Guards Mountain Air Assault Division.

The cockpit crew consisted of the following pilots: Major Alexei Ryabtsev, Junior lieutenant Vladimir Priplov, and Captain Nikolai Mikhailovich Maslyuk.

At 14:40:55 the crew of Il-14 contacted air traffic control and requested permission to climb to 3,300 m (10,800 ft) due to severe turbulence and cumulus clouds.

The investigation into the crash found that the pilots of the Ilyushin Il-14 disobeyed instructions from air traffic control and climbed to the altitude of 3,000 m (9,800 ft) to avoid the clouds and turbulence, where the formation of Antonov An-12s were flying.