What happened
On the afternoon of the accident, a crew was conducting several aerial spraying operations for the Koptevsky sovkhoz. Following the completion of their scheduled missions, the aircraft departed from the airfield. During the initial climb phase, the pilot-in-command executed an abrupt left-hand turn. This maneuver caused the aircraft to bank at an angle of 60°, leading to an aerodynamic stall. The plane subsequently crashed into an open field situated approximately 4 km northwest of Koptevka.
A post-crash fire broke out upon impact, resulting in the total destruction of the aircraft. The incident resulted in one fatality and one serious injury. The copilot died at the scene, while the captain sustained severe injuries; the captain succumbed to his wounds one week after the crash.
Findings
Investigations into the accident identified that the primary cause was the execution of hazardous maneuvers during takeoff, specifically a turn that exceeded the safe banking limit of 30°. Additionally, investigators noted that fatigue among the crew played a role in the accident. The investigation also revealed that the copilot had a blood alcohol concentration of 0.9‰ at the time of the flight.