PURPOSE: To hold a midget helicopter on a load-carrying platform certainly and enable the wheeled transport by mounting removably a sledge holding part covering the alighting sledges of the midget helicopter from the above through a fixture to a support plate capable of installing to the load-carrying platform floor board.

CONSTITUTION: To transport a midget helicopter 1 for dropping drugs with a vehicle, a support plate 12 is made capable of installation to the floor board 14 of a transporting device 11 such as a load-carrying platform with a bolt 15 having a handle 18. A holding part 28 covering a lateral pair of alighting sledges 4 of the midget helicopter 1 from the above is removably mounted to the support plate 12 through a fixture capable of engagingly locking by a handle 24 provided on a fixed plate 22. The helicopter end part is engagingly locked by a band 34 in the upper part of a strut 31. The helicopter is certainly held on the carrying device such as a load-carrying platform using the alighting sledge having a strength and can be transported with a vehicle.