The maintenance crew were working on the engines of an An-26B, identification No. EW-246TG, when the accident occured, Ukrainian news broadcaster TSN reported with reference to the Aerovokzal online information resource.
While checks were underway, the engines were put on full throttle by mistake, and the plane began moving across the aircraft parking area, where it collided with a Yak-40 UR-MIG.
The incident is under investigation. The aircraft parking area where the collision occurred is located in Boryspil, not far from Boryspil International Airport.