What happened
During a local training session conducted at Vnukovo Airport, the crew was performing a series of maneuvers. After successfully completing four touch-and-go operations, the aircraft departed for another takeoff attempt. Shortly after leaving the ground, at an altitude of approximately 20 meters, the aircraft began experiencing intense vibrations and became unstable.
As the flight continued its climb to an altitude of 70 meters, both engine number 1 and engine number 3 experienced a simultaneous loss of power. In response to the sudden loss of thrust, the captain attempted an emergency landing. During this maneuver, the aircraft collided with treetops and crashed into a forested area, which resulted in a post-crash fire. The incident resulted in four minor injuries among the occupants, while the aircraft was completely destroyed.
Findings
Investigations into the accident highlighted a technical malfunction involving the slats, which reportedly deployed at an incorrect angle following rotation. While this mechanical issue was identified, the specific reason for the simultaneous power loss in both engines has not been determined.