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пассажирский трап (Passenger boarding stairs, sometimes referred to as "air-stairs", 'boarding ramps', 'stair car" or 'aircraft steps', provide a mobile means to traverse between aircraft doors and the ground. Because larger aircraft have door sills 5 to 20 feet high, stairs facilitate safe boarding and deplaning. While smaller units are generally moved by being towed or pushed, larger units are self-powered. Most models have adjustable height to accommodate various aircraft. Optional features may include canopy, heat, supplementary lighting and red carpet.  victorygse.com Alexander Demidov) |
