These models of passenger stairs with a variable geometry, are all designed to handle passengers disembarking of the aircrafts doors located at a height between 1800 to 3800/4000 mm. Each model is equipped with a PLC control which manages all the machine functions and the security as well. These models are equipped with a rigid front axle fixed to a towbar and a hook, with 240° total steering angle. This front axle is equipped with a brake pad, which raise automatically the towbar in avertical position in case of accidentally unhooking during towing. Upon a request of the customer, the equipment...