Incident
On a local training flight at Tula Airport, a four-engine airplane with six crew members aboard was completing an approach in marginal weather conditions. It collided with a second aircraft, an Antonov AN-12BP belonging to the Soviet Air Force. The Antonov was inbound from Sestsha Airbase in Bryansk, carrying 14 passengers and six crew. Following the collision, both aircraft dove into a field several kilometers from the airport and were destroyed. All 27 occupants on both aircraft were killed.
Contributing Factors
The official investigation reported that a radar failed, leaving air traffic control unable to determine the exact positions of the two aircraft. Poor visibility due to marginal weather conditions was considered a contributing factor.
Aftermath
No further details regarding recovery or investigative actions were provided in the source.