4 fatalities

Cargo Flight Strikes Mount Aag Amid Navigation Error and Strong Winds (CCCP-84448)

Khalaktyrka, RussiaFlight

On October 2, 1959, a Lisunov LI-2 (registration CCCP-84448) operated by Aeroflot - Russian International Airlines was involved in an aviation accident near Khalaktyrka, Russia in flight. 4 people were killed. Investigators recorded the probable cause as: Strong winds at 60 km/h caused the airplane to deviate 12° from the prescribed route. Due to clouds, the crew was unable to distinguish the mountain. Lack of ATC assistance was considered as a contributing factor. This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A); 4 related events involving the same aircraft type or operator are linked below.

Sourcesthe Bureau of Aircraft Accidents Archives (B3A)Primary reportUpdated 2026-06-12Data APIEditorial standards

A cargo flight from Milkovo to Khalaktyrka struck Mount Aag at 2,100 m, killing all four crew members. Strong winds caused a 12° route deviation, and clouds obscured the mountain.

Accident Overview

On a cargo flight from Milkovo to Khalaktyrka, an aircraft carrying a crew of four and a load of 46 bags of potatoes weighing 2,536 kilograms encountered a fatal accident. The crew began the descent in cloud cover and failed to follow the assigned route for Khalaktyrka. At an altitude of 2,100 meters, the airplane struck the north face of Mount Aag, a peak 2,319 meters high located 42 kilometers north of Khalaktyrka. The wreckage was discovered a day later, and all four crew members were killed.

Investigation Findings

The official investigation determined that strong winds blowing at 60 kilometers per hour caused the aircraft to deviate 12 degrees from the prescribed route. Due to the presence of clouds, the crew was unable to visually distinguish the mountain. The lack of air traffic control assistance was also considered a contributing factor.

Probable Cause

The probable cause of the accident was the deviation from the prescribed route due to strong winds, combined with reduced visibility from clouds that prevented the crew from seeing the mountain. The absence of ATC assistance contributed to the outcome.