Club Homepage Forums Classified Ads Buy & Sell - Everything But Airplanes WTB Child seat for 150

You are correct, there should be a seat belt with it. If fact the entire child seat consists of:

Back rest with two side brackets (this part bolts into the side of the cabin walls, there should be nut plates factory installed behind the plastic.
Seat with frame (bottom part you sit on)
two brackets to secure the seat with frame to the cabin floor.
Seat belt with end brackets.