No fatalities

Overweight and Aft CG Lead to Stall and Crash in Snow Field (CCCP-04326)

Tadebyayakha, RussiaTakeoff (climb)

On May 21, 1985, an Antonov AN-2 (registration CCCP-04326) operated by Aeroflot - Russian International Airlines was involved in an aviation accident near Tadebyayakha, Russia during takeoff. No fatalities were reported. Investigators recorded the probable cause as: It was determined that the total weight of the aircraft at the time of the accident was 831 kilos above MTOW while the CofG was 6,8% aft the limit. This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A); 5 related events involving the same aircraft type or operator are linked below.

Sourcesthe Bureau of Aircraft Accidents Archives (B3A)Primary reportUpdated 2026-06-11Data APIEditorial standards

A single-engine aircraft on an oil exploration mission stalled shortly after takeoff and crashed in a snow-covered field. All 22 occupants survived, but the aircraft was destroyed. Investigators found the aircraft was 831 kg over maximum takeoff weight and the center of gravity was 6.8% aft of the limit.

Incident Overview

A single-engine aircraft conducting an oil exploration expedition crashed shortly after takeoff. The aircraft was carrying two pilots and 20 geologists and scientists. After becoming airborne, the aircraft encountered difficulties gaining altitude, stalled, and subsequently impacted a snow-covered field. All 22 occupants were rescued, and the aircraft sustained damage beyond repair.

Weight and Balance Findings

The official investigation determined that at the time of the accident, the total weight of the aircraft exceeded the maximum takeoff weight (MTOW) by 831 kilograms. Additionally, the center of gravity (CG) was found to be 6.8% aft of the aft limit. These conditions were identified as contributing to the aircraft's inability to climb and subsequent stall.

Rescue and Damage

Emergency responders successfully rescued all 22 individuals on board. The aircraft was declared damaged beyond repair due to the impact forces.

Probable cause

It was determined that the total weight of the aircraft at the time of the accident was 831 kilos above MTOW while the CofG was 6,8% aft the limit.