10 fatalities

Mountain collision near Baku due to navigation failure (CCCP-L1450)

Yevlakh, AzerbaijanFlight

On October 12, 1948, an Ilyushin II-12 (registration CCCP-L1450) operated by Aeroflot - Russian International Airlines was involved in an aviation accident near Yevlakh, Azerbaijan in flight. 10 people were killed. Investigators recorded the probable cause as: The crew failed to properly prepare for the flight and did not acquire adequate information about enroute weather conditions. 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)Source recordUpdated 2026-08-05Data APIEditorial standards

An aircraft crashed into a mountain slope approximately 250 km north of Baku after the crew lost situational awareness in deteriorating weather, resulting in the loss of all ten occupants.

What happened

Approximately one hour after departing from Baku-Bina Airport, the aircraft encountered worsening meteorological conditions while cruising at an altitude of 3,000 meters. The flight was taking place roughly 250 kilometers north of the capital city when visibility degraded significantly. Due to poor reception of local beacon transmissions, the captain initiated a return to Baku but struggled to determine the aircraft's precise position with certainty.

While navigating in these low-visibility conditions, the aircraft struck the slope of a mountain. Search and rescue operations were launched immediately following the incident. However, after several days of intensive efforts, the operation was suspended as no wreckage or survivors were located. All 10 occupants on board were presumed lost.

Findings

The official investigation concluded that the accident resulted from inadequate pre-flight preparation. Specifically, it was determined that the crew failed to obtain suitable information regarding the weather conditions expected along the route, which contributed to their inability to maintain situational awareness during the flight.

Probable cause

The crew failed to properly prepare for the flight and did not acquire adequate information about enroute weather conditions.