![]() ![]() This change reduces fuel burn and extends the airplane's range. The 747-400's most noticeable aerodynamic enhancement over previous 747s is the 6-foot (1.8-m) longer wing with a 6-foot-high winglet angled upward and slightly outward. The composite and aluminum winglet saves 60 pounds (27 kg) per airplane compared to an all-aluminum structure. These winglets are made of graphite-epoxy materials, at this time being used on the all modern Boeing aircrafts. The winglet gives the effect of having an even greater wingspan without outgrowing the standard airport slot. The wingtip extension and winglet offer a fuel mileage improvement of about 3 percent. US certification (with PW-4000s) was awarded in January 1989. This was a delivery flight with no commercial passengers or freight aboard.īeing considered the latest, longest ranging and best selling model of the 747 family, the 747-400 externally look like the -300, but it is a considerably superior aircraft.īoeing launched the 747-400 in October 1985 and the first development aircraft first flew on April 29 1988. In 1989, a Qantas 747-400 flew non-stop from London to Sydney, a distance of 9,720 nmi (11,190 mi, 18,001 km) in 20 hours and 9 minutes, to set a commercial aircraft world distance record. The 747-400 passenger version features a stretched upper deck (SUD) like the 747-300 as a standard feature. The 747-400 is an improved version of the 747-300 with improved wingspan, revised engines, winglets and a glass cockpit that removed the need for a flight engineer. The 747-400 is a premier long-range aircraft, having the right size for both airlines and passengers, also it offers value-added technology and additional payload range capability in the 747-400ER. The 747-400 is available in passenger and freighter arrangements, giving the maximum flexibility for the customers. The last four -400s on order were cancelled by Philippine Airlines (which switched to the 777-300ER). ![]() Production of the 747-400 passenger version officially ceased on March 15, 2007. The Boeing 747 is the world's favorite aircraft as well as the world's only 400-seat airplane. The 747's longevity, durability and reputation are based on its low trip costs, leadership in high-density markets, unmatched comfort, and flexibility to serve short-, medium- and long-range routes. It has a dispatch-reliability rate of nearly 99 percent. The 747-400 has a range of approximately 7,260 nautical miles (13,450 km), and the lowest cost per seat-mile of any twin-aisle airplane in service today. So, the 747-400 aircraft will deliver more range, lower noise, better fuel economy and lower operating costs. These improvements reduce fuel burn and extend the airplane's range. The 747-400's has also the most visible aerodynamic enhancements - the 6-foot (1.8 m) longer wing with a 6-foot-high winglet angled upward and slightly outward. The Boeing 747-400 airplanes offer their services at over 210 airports around the world also it is called “the world's best freighter” and the world's fastest commercial jetliner. ![]()
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