An aircraft has an aircraft part with driving means and a body, and an impact reducing device which is movable between an inoperative position in which it is located close to the body and an operative position in which it is moved away from the body so as to first be subjected to impact against the ground and to dampen the impact, wherein the impact reducing device is formed as a plate-shaped element extending in a longitudinal direction of the body in a direction from a rear end to a front end, the plate-shaped element being pivotally connected with the aircraft body at one end so that it can pivot about a substantially horizontal axis and the other end of the plate-shaped element in the inoperative position is located near the aircraft body, while in the operative position it moved away from the aircraft body.