Description" Thanks in part to use of advanced materials, like graphite, to replace heavy metals, and aluminum alloys used in wing skins, stringers, and lower-spar chords, the 747 realized considerable weight savings over the -300.
The 747-400 can travel 8,430 statute miles (13,570 km) without refueling. That, in addition to its large seating capacity, makes it the lowest cost per seat-mile of any twin aisle airplane offered. "
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The Virtual cockpit dials are functional - you can read them in flight.