On October 11, 1984, Aeroflot Flight 3352, a Tupolev Tu-154B-1 registered CCCP-85243, was approaching Omsk Airport in the Soviet Union during a scheduled domestic journey from Krasnodar to Novosibirsk.
The aircraft carried 170 passengers and nine crew members. What should have been a routine stopover turned into a catastrophe because maintenance vehicles were occupying the runway.
The flight had proceeded without significant problems, but conditions at Omsk were challenging. It was dark and raining, with visibility reduced to approximately three kilometres.
Concerned about the wet runway, airport personnel had dispatched maintenance vehicles to dry its surface using powerful hot-air equipment. However, the runway remained in use, creating a deadly conflict between ground operations and arriving aircraft.
As Flight 3352 approached, the crew contacted air traffic control and received landing clearance. The controller responsible for ground movements had reportedly fallen asleep at his workstation and failed to ensure that the runway was clear.
The maintenance vehicles were not equipped with appropriate rotating warning beacons, and their occupants could not reliably monitor the tower frequency.
At approximately 5:39 a.m. local time, the aircraft touched down at around 270 km/h. Almost immediately, the captain spotted the vehicles ahead and attempted evasive action. It was too late.
The aircraft struck the maintenance equipment, lost control, veered off the runway and broke apart before bursting into flames.
The impact and subsequent fire killed 174 of the 179 people aboard. Only five people survived, including four crew members and one passenger. Four people on the ground also died, bringing the total death toll to 178.
The investigation determined that the disaster resulted from serious operational failures rather than a mechanical defect or a mistake by the flight crew.
Investigators found that the runway had not been properly declared occupied, communication procedures had failed, and air traffic control had cleared the aircraft to land without ensuring that maintenance operations were complete. Poor visibility prevented the pilots from identifying the obstruction in time to avoid the collision.
Several airport officials and controllers were subsequently convicted for negligence. The ground controller received a 15-year prison sentence, while other officials received prison terms ranging from 12 to 15 years.
Further inspections at Soviet airports uncovered similar safety violations, prompting disciplinary action against additional aviation officials.
Aeroflot Flight 3352 remains a devastating reminder that aviation safety depends not only on reliable aircraft and skilled pilots but also on strict runway procedures, effective communication and alert ground personnel. A failure to coordinate two ordinary airport operations turned a routine landing into a tragedy that claimed 178 lives.
