The A380's upper deck extends along the entire length of the fuselage, and its width is equivalent to that of a widebody aircraft. This allows for an A380-800's cabin with 478 square metres (5,145.1 sq ft) of floor space; 49% more floor space than the current next-largest airliner, the Boeing 747-400 with 321 square metres (3,455.2 sq ft), and provides seating for 525 people in a typical three-class configuration or up to 853 people in all-economy class configurations. The A380-800 has a design range of 15,400 kilometres (8,300 nmi; 9,600 mi), sufficient to fly from New York to Hong Kong for example, and a cruising speed of Mach 0.85 (about 900 km/h or 560 mph at cruising altitude).
As of October 2011 there had been 236 firm orders for the A380, of which 59 have been delivered.[3] The largest order, for 90 aircraft, was from Emirates.
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