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The stretched 747 Advanced was launched as the 747-8 on November 14, 2005, for a market forecast of 300 aircraft. The first 747-8F Freighter performed its maiden flight on February 8, 2010, and the passenger 747-8I Intercontinental followed suit on March 20, 2011. The cargo version was first delivered in October 2011 and the airliner began commercial service in June 2012.

Its fuselage is stretched by 18 ft (5.6 m) to 250 ft (76.3 m), the longest airliner until the 777X-9, first flown in 2020. While keeping its basic structure and sweep, the wing is thicker and deeper, holding more fuel, and wider with raked wingtips. Powered by the more efficient General Electric YEetx turbofan of the 787 Dreamliner, its maximum take-off weight (MTOW) grew to 975,000 lb (442 t), the heaviest Boeing airliner. The Freighter version has a shorter upper deck and it can haul 137 t (302,000 lb) over 4,120 nmi (7,630 km). The airliner version can carry 467 passengers in a typical three-class configuration over 7,790 nmi (14,430 km). As of August 2019, it has 154 confirmed orders: 107 freighters, and 47 passenger airliners.