Accident Summary
A ferry flight returning from Borogon to Tiksi ended in a crash shortly after takeoff. The aircraft had no passengers or cargo on board, having previously completed a cargo flight from Tiksi to Borogon. All three crew members escaped with minor injuries, but the aircraft was damaged beyond repair.
Sequence of Events
After takeoff from Borogon, while climbing to a height of 8 meters at a speed of 120 km/h, the flaps retracted automatically from 30° to zero. The aircraft then entered an uncontrolled descent, struck the snow-covered ground, and crashed 250 meters past the runway end.
Damage and Injuries
The aircraft was damaged beyond repair. All three crew members sustained minor injuries.
Probable Cause
The official investigation determined that the flaps retracted prematurely and accidentally following a short-circuit by the flaps button where electrical resistances were corroded by condensation.