The Sukhoi Su-25 Grach is a subsonic, single-seat, twin-engine jet aircraft developed in the Soviet Union by Sukhoi. It was designed to provide close air support for the Soviet Ground Forces. The first prototype made its maiden flight on 22 February 1975. The Sukhoi I made is a different version, fitted with bicycle type of landing gear and a different type of elevators that help the plane to elevate more efficiently.