The Boeing 767 is a wide-body airliner developed and manufactured by Boeing Commercial Airplanes. 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.
To complement the larger 747, it has a seven-abreast cross-section, accommodating smaller LD2 ULD cargo containers. The 767 is Boeing's first wide-body twinjet, powered by General Electric CF6, Rolls-Royce RB211, or Pratt & Whitney JT9D turbofans. JT9D engines were eventually replaced by PW4000 engines. 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 159-foot-long (48.5 m) 767-200 typically seats 216 passengers over 3,900 nmi (7,200 km), while the 767-200ER seats 181 over a 6,590 nautical miles (12,200 km) range. 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). Military derivatives include the E-767 for surveillance, the KC-767 and KC-46 aerial tankers. Passenger 767-200s and 767-300s have been converted for cargo use.
The 767-300F, the production freighter version of the 767-300ER, entered service with UPS Airlines in 1995. The 767-300F can hold up to 24 standard 88-by-125-inch (220 by 320 cm) pallets on its main deck and up to 30 LD2 unit load devices on the lower deck, with a total cargo volume of 15,469 cubic feet (438 m3). The freighter has a main deck cargo door and crew exit, while the lower deck features two starboard-side cargo doors and one port-side cargo door. A general market version with onboard freight-handling systems, refrigeration capability, and crew facilities was delivered to Asiana Airlines on August 23, 1996. As of August 2019, 767-300F deliveries stand at 161 with 61 unfilled orders. Airlines operated 222 examples of the freighter variant and freighter conversions in July 2018.