The Boeing 747 is a large, long-range, wide-body airliner and cargo aircraft manufactured by Boeing Commercial Airplanes in the United States. On September 30, 1968, the first 747 was rolled out of the custom-built Everett Plant , the largest building in the world by volume. The first flight took place on February 9, 1969, and the 747 was certified that December. Entering service with Pan Am on January 22, 1970, it was the first airplane dubbed a "Jumbo Jet". The 747 is a quadjet , with ten-abreast economy seating typically accommodating 366 passengers. It has a pronounced 37.5° wing sweep , allowing a Mach 0.85 (490 kn; 560 mph; 900 km/h) cruise speed . Boeing introduced the 747-200 in 1971, with more powerful engines for a heavier maximum takeoff weight and a longer range. The heavier 747-400 was introduced in 1989 and is the most common variant. By June 2020, 1,556 aircraft had been built. As of 2020, 61 Boeing 747s have been lost in accidents , in which 3,722 people have died. ( Full article... )


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