The aircraft would have combined the Boeing 767-300 with a Boeing 757 cross section mounted over the rear fuselage.The airliner was launched as the 7X7 project on July 14, 1978, the prototype first flew on September 26, 1981, and it was certified on July 30, 1982.The original 767-200 entered service on September 8 with United Airlines, and the extended-range 767-200ER in 1984.
It was stretched into the 767-300 in October 1986, followed by the 767-300ER in 1988, the most popular variant. The 767-300F, a production freighter version, debuted in October 1995. It was stretched again into the 767-400ER from September 2000. The 767 is Boeings first wide-body twinjet, powered by General Electric CF6, Rolls-Royce RB211, or Pratt Whitney JT9D turbofans. The aircraft has a conventional tail and a supercritical wing for reduced aerodynamic drag. Its two-crew glass cockpit, a first for a Boeing airliner, was developed jointly for the 757 a narrow-body aircraft, allowing a common pilot type rating. Studies for a higher-capacity 767 in 1986 led Boeing to develop the larger 777 twinjet, introduced in June 1995. The 180-foot-long (54.9 m) 767-300 typically seats 269 passengers over 3,900 nmi (7,200 km), while the 767-300ER seats 218 over 5,980 nmi (11,070 km). The 767-300F can haul 116,000 lb (52.7 t) over 3,225 nmi (6,025 km), and the 201.3-foot-long (61.37 m) 767-400ER typically seats 245 passengers over 5,625 nmi (10,415 km). Passenger 767-200s and 767-300s have been converted for cargo use. As of August 2019 update, Boeing has received 1,254 orders from 74 customers, with 1,161 delivered, while the remaining orders are for cargo or tanker variants. A total of 742 of these aircraft were in service in July 2018. Delta Air Lines is the largest operator with 77 aircraft. Competitors have included the Airbus A300, A310, and A330-200. The 300 and 300ER variants account for almost two-thirds of all 767s sold. However, in early 2018 Boeing Commercial Airplanes VP of marketing Randy Tinseth stated that the company did not intend to resume production of the passenger variant. This rate could rise to 3.5 per month in July 2020 and 4 per month in January 2021, before decreasing to 3 per month in January 2025 and then 2 per month in July 2025. The cargo market is the main target, but a passenger version could be a cheaper alternative to the proposed New Midsize Airplane. The wings are swept at 31.5 degrees and optimized for a cruising speed of Mach 0.8 (533 mph or 858 kmh). Each wing features a supercritical airfoil cross-section and is equipped with six-panel leading edge slats, single- and double-slotted flaps, inboard and outboard ailerons, and six spoilers. X Plane 11 777 300Er Plus Improved AluminumThe airframe further incorporates Carbon-fiber-reinforced polymer composite material wing surfaces, Kevlar fairings and access panels, plus improved aluminum alloys, which together reduce overall weight by 1,900 pounds (860 kg) versus preceding aircraft. The non-ER variants center tank is what is called cheek tanks; two interconnected halves in each wing root with a dry dock in between. The center tank is also used on the -300ER and -400ER variants. Deliveries for the type totaled 104 aircraft with no unfilled orders remaining. As of July 2018, 34 of the variant were in airline service. The types main competitor was the Airbus A300. Several military 767s have been derived from the 767-200ER, 156 157 the longest-range version of the aircraft.
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