A position correcting mechanism sandwiches, from both sides, a horizontal leg portion of a flying vehicle that has landed on a takeoff/landing surface of a stage, and moves the flying vehicle on the takeoff/landing surface to a position along a centerline. A grip mechanism grips a supporting leg portion of the flying vehicle. The flying vehicle is moved toward a securing device provided at an edge part of the stage, and an end portion of the horizontal leg portion is inserted into an insertion hole of an insertion part. The flying vehicle is thereby secured on the takeoff/landing surface.