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Engine Failure Forces Emergency Landing Near Kirensk; Nine Occupants Injured (RA-67701)

Kirensk, RussiaFlight

On October 2, 2010, a Cessna 208B Grand Caravan (registration RA-67701) operated by Weltall-Avia was involved in an aviation accident near Kirensk, Russia in flight. No fatalities were reported. Investigators recorded the probable cause as: Engine failure due to damage of the bearings of the planetary gear from the first stage of the compressor, leading to vibration and destruction of the turbine. It is possible the damage to the bearings was caused by the presence of aluminum or silicon oxide. This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A).

Sourcesthe Bureau of Aircraft Accidents Archives (B3A)Primary report: the Interstate Aviation Committee (MAK)Updated 2026-07-04Data APIEditorial standards

A single-engine aircraft experienced an engine failure while cruising over a cloud layer, leading to an emergency landing 37 km west of Kirensk. All nine occupants were injured and the aircraft was destroyed.

Event

The single-engine aircraft departed Lensk at 0813 local time on a flight to Bratsk. While cruising at an altitude of 4,200 meters over a cloud layer, the engine failed. The crew elected to divert to Kirensk Airport but was unable to maintain a safe altitude. Subsequently, the captain attempted an emergency landing. The aircraft impacted trees and crashed in a wooded area located 37 kilometers west of Kirensk. All nine occupants sustained injuries, and the aircraft was damaged beyond repair.

Investigation

The official investigation was conducted to determine the cause of the accident.

Probable Cause

The investigation determined that the engine failure was due to damage of the bearings of the planetary gear from the first stage of the compressor, leading to vibration and destruction of the turbine. It is possible that the damage to the bearings was caused by the presence of aluminum or silicon oxide. However, it was not possible to determine the source of this contamination.

Engine failure

Frequently asked questions

What happened in the 2 Oct 2010 Cessna 208B Grand Caravan accident near Kirensk, Russia?

A single-engine aircraft experienced an engine failure while cruising over a cloud layer, leading to an emergency landing 37 km west of Kirensk. All nine occupants were injured and the aircraft was destroyed.

Were there any fatalities in the 2 Oct 2010 Cessna 208B Grand Caravan accident?

No fatalities were recorded in this accident.

What aircraft was involved and where did it happen?

The accident on 2 Oct 2010 involved a Cessna 208B Grand Caravan, registration RA-67701, operated by Weltall-Avia, at Kirensk, Russia.

What was the probable cause of the accident?

Engine failure due to damage of the bearings of the planetary gear from the first stage of the compressor, leading to vibration and destruction of the turbine. It is possible the damage to the bearings was caused by the presence of aluminum or silicon oxide. However, it was not possible to determine the source of…

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