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The Boeing 747-400 is a large, long-range wide-body airliner produced by Boeing Commercial Airplanes, an advanced variant of the initial Boeing 747.The "Advanced Series 300" was announced at the September 1984 Farnborough Airshow, targeting a 10% cost reduction with more efficient engines and 1,000 nautical miles [nmi] (1,900 km; 1,200 mi) of additional range.
Nose section Center section Example 717, 727, 737: 6 wheels [1x2]+[2x2] A Boeing 737 from Southwest Airlines: 747: 18 wheels [1x2]+[4x4] A Boeing 747-400's main landing gear. Note the toes-up bias angle of the bogies on the wing gear, to ensure correct stowage upon retraction: 707, 720, 757, 767, 787: 10 wheels [1x2]+[2x4]
The Boeing Dreamlifter, a modified 747-400, first flew on September 9, 2006. The 747-400 Dreamlifter [196] (originally called the 747 Large Cargo Freighter or LCF [197]) is a Boeing-designed modification of existing 747-400s into a larger outsize cargo freighter configuration to ferry 787 Dreamliner sub-assemblies.
A diagram of the aft pressure bulkhead of the Boeing 747 used on Japan Airlines Flight 123. Multiple instances of damage to the aft pressure bulkhead have occurred; while a few cases have led to serious failures leading to aircraft losses, others have proven to be survivable.
The Boeing Dreamlifter, officially the 747-400 Large Cargo Freighter (LCF), is a wide-body cargo aircraft modified extensively from the Boeing 747-400 airliner. With a volume of 65,000 cubic feet (1,840 m 3 ) [ 1 ] it can hold three times that of a 747-400F freighter. [ 2 ]
On June 28, 1998, United Airlines Flight 863, a Boeing 747-400 flying United's regularly scheduled transpacific service from San Francisco International Airport to Sydney Airport was forced to shut down one of its right-wing engines and nearly collided with San Bruno Mountain while recovering from the engine failure.
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As of November 2024, there were 429 Boeing 747 aircraft in active airline service, comprising 1 747-100, 2 747SPs, 16 747-200s, 1 747-300, 258 747-400s, and 151 747-8s. [1] These aircraft are listed by airline operators and variant in the following table.