The accessories for diorama building in the 1/200 scale, hitherto consisting of figurines, catering vehicles, container vehicles, the Kögel KAMA Tow Bear as well as jetways and tractor is now complemented by a self-propelled jetway. The telescopic stairway can be extended to the lower section of an A380 in the 1/200 scale and is flexible enough to use on many airplane types. The undercarriage is equipped with rollable wheels.