Abstract: A vehicle for transporting on the ground an aircraft that has front and rear undercarriage legs and wheels on at least the rear undercarriage legs. The vehicle comprises a rolling structure shaped and sized to support the aircraft with the front and rear undercarriage legs on corresponding cradles on the rolling structure. Structure (30, 34) is provided for raising and lowering the cradles. Mechanisms (44, 48, 58) are provided on only the cradles of the rear undercarriage legs, for encompassing and locking the wheels of the rear undercarriage legs without moving the plane horizontally. Each cradle (24) corresponding to a rear undercarriage leg comprises a base (44) against which the wheels on the rear undercarriage leg are applied. At least one mobile support bar (48) is adapted to be placed parallel to the base under the rear undercarriage wheels, this base (44) and bar (48) being disposed on opposite sides of a line (46) along which the rear undercarriage wheels bear on the ground.