The 747-300M features cargo capacity on the rear portion of the main deck, similar to the -200M, but with the stretched upper deck it can carry more passengers. Besides the passenger model, two other versions (-300M, -300SR) were produced. The 747-300 first flew on October 5, 1982, and the type's first delivery went to Swissair on March 23, 1983. The variant revived the 747-300 designation, which had been previously used on a design study that did not reach production. Swissair placed the first order for the 747-300 on June 11, 1980. The -300 could be equipped with the same Pratt & Whitney and Rolls-Royce powerplants as on the -200, as well as updated General Electric CF6-80C2B1 engines. Minor aerodynamic changes allowed the -300's cruise speed to reach Mach 0.85 compared with Mach 0.84 on the -200 and -100 models, while retaining the same takeoff weight. The 747-300 introduced a new straight stairway to the upper deck, instead of a spiral staircase on earlier variants, which creates room above and below for more seats. An example for a retrofit were two UTA -200 Combis being converted in 1986, and an example for the option were two brand-new JAL -100 aircraft (designated -100BSR SUD), the first of which was delivered on March 24, 1986. After being made standard on the 747-300, the SUD was offered as a retrofit, and as an option to earlier variants still in-production. The stretched upper deck (SUD) has two emergency exit doors and is the most visible difference between the -300 and previous models. The 747 was the first airplane dubbed a "Jumbo Jet", the first wide-body airliner It entered service with Pan Am on January 22, 1970. The first flight took place on February 9, 1969, and the 747 was certified in December of that year. On September 30, 1968, the first 747 was rolled out of the custom-built Everett Plant, the world's largest building by volume. In April 1966, Pan Am ordered 25 Boeing 747-100 aircraft and in late 1966, Pratt & Whitney agreed to develop its JT9D engine, a high-bypass turbofan.
In 1965, Joe Sutter left the 737 development program to design the 747, the first twin aisle airliner. After introducing the 707 in October 1958, Pan Am wanted a jet 2+1/2 times its size, to reduce its seat cost by 30% to democratize air travel.
The Boeing 747 is a large, long-range wide-body airliner manufactured by Boeing Commercial Airplanes in the United States. Auto Credit Based on Annedzsrue's Boeing 747-400 Philippine Airlinesįor further information check out the original build
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