The Antonov An-2 hit a concrete post and power lines during an aerial application flight and crashed. Both occupants died from injuries sustained in the crash. The plane caught fire after the crash. The cause of the accident with the An-2 RA-40851 aircraft was the collision of the aircraft with a reinforced concrete support and power transmission lines in a controlled flight while performing the aerial application at an extremely low altitude. The contributing factors most likely were: – field processing when the sun is less than 15ø above the horizon and the sun’s heading angle is less than 30ø; – insufficient prudence of the PIC when performing a VFR flight for aerial application; – failure of the pilot to take into account the presence of artificial obstacles in the flight area; – lack of marking of power lines.