Accident Overview
A training flight departing from Novosibirsk-Severny Airport ended in a crash after the crew conducted a simulated engine failure. While at cruising altitude, the crew simulated a failure of the left engine and applied maximum right rudder. This action caused an aerodynamic overbalancing, resulting in a side-slip from which the rudder could not be returned to neutral. The aircraft became uncontrollable, entered a dive, and struck terrain.
Location and Circumstances
The crash site was in a snow-covered swampy bushland near the village of Penyok. The location was approximately 91 kilometers from Novosibirsk-Tolmachevo Airport. All six crew members on board were killed.
Probable Cause
The probable cause, as stated by the investigation, is that the crew simulated a failure of the left engine and gave maximum right rudder, leading to an aerodynamic overbalancing and a side-slip where it was impossible to return the rudder to the neutral position.