92 fatalities

1970-02-06: Ilyushin II-18 (CCCP-75798) — Aeroflot - Russian International Airlines — Samarkand, Uzbekistan

Samarkand, UzbekistanLanding (descent or approach)

On February 6, 1970, an Ilyushin II-18 (registration CCCP-75798) operated by Aeroflot - Russian International Airlines was involved in an aviation accident near Samarkand, Uzbekistan during landing or approach. 92 people were killed. Investigators recorded the probable cause as: The accident resulted from a combination of incorrect ATC descent clearances based on inaccurate distance estimates and the crew's failure to verify their position during low visibility. This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A); 8 related events involving the same aircraft type or operator are linked below.

Sourcesthe Bureau of Aircraft Accidents Archives (B3A)Primary reportUpdated 1781236634Data APIEditorial standards

An aircraft crashed into a mountainside during its approach to Samarkand, resulting in 92 fatalities and leaving only two survivors.

What happened

During an approach to Samarkand Airport, the flight transitioned from a cruising altitude of 5,100 meters through successive descent clearances to 2,700 and 2,400 meters. As the aircraft approached the destination, the crew encountered low cloud cover and reduced visibility. While flying at a speed of 380 km/h and maintaining a 16-degree nose-down attitude at an altitude of 1,500 meters, the plane collided with a mountain slope situated approximately 32 km northeast of the airport. The impact resulted in the total destruction of the aircraft. Out of all those on board, there were 92 fatalities, while the co-pilot and 13 passengers were successfully rescued.

Findings

Investigations into the accident identified several contributing elements. A primary factor was inaccurate air traffic control instructions, as the approach controller provided a premature descent clearance based on an incorrect estimation of the aircraft's distance from the airport; the controller believed the plane was 31 km away when it was actually between 42 and 44 km from the field. Additionally, the flight crew did not verify their exact position following the descent instructions while operating within low-visibility cloud conditions.

Probable cause

The accident resulted from a combination of incorrect ATC descent clearances based on inaccurate distance estimates and the crew's failure to verify their position during low visibility.