The first model to emerge from the program, the 777-300ER, was launched with an order for ten aircraft from Air France, along with additional commitments.
Smaller folding wingtips of 11 feet (3.35 m) in length will allow 777X models to use the same airport gates and taxiways as earlier 777s.
New flight control software will eliminate the need for the tail skid by keeping the tail off the runway surface regardless of the extent to which pilots command the elevators. The cabin will have bigger windows, higher ceilings, more humidity, and reduce cabin height to 1,800 m. Interior cabin open LED modern ceiling.Boeing 777-9X is equipped with a large cabin window, which is larger than the window found on other types of aircraft. The aircraft are fitted with private jet cabins by third party contractors, and completion may take 3 years. The 777's windows were the largest of any current commercial airliner until the 787, and measure 15-inch (380 mm) by 10-inch (250 mm) in size (all models outside the 777-8 and 777-9). Boeing made use of work done on the canceled Boeing 7J7 regional jet, which utilized similar versions of the chosen technologies. Nine aircraft fitted with General Electric, Pratt & Whitney, and Rolls-Royce engines were flight tested at locations ranging from the desert airfield at Edwards Air Force Base in California to frigid conditions in Alaska, mainly Fairbanks International Airport.
The 5.96 m wide modern cabin has large windows, new lighting and new architecture that will increase passenger comfort during flights. The mid-size 757 and 767 launched to market success, due in part to 1980s extended-range twin-engine operational performance standards (ETOPS) regulations governing transoceanic twinjet operations. China Airlines ordered ten 777-300ER aircraft to replace 747-400s on routes between Taipei and Los Angeles and New York City, telling Aviation Week and Space Technology that the 777-300ER's per seat cost is about 20% lower than the 747's costs (varying due to fuel prices). Boeing 777 8 and Boeing 777 9. The airframe incorporates the use of composite materials, which comprise nine percent of its original structural weight (all models outside the 777-8 and 777-9). The aircraft is primarily used on US transcontinental and Hawaii flights. Because of the aircraft's length, the 777-300 is equipped with a tailskid and ground maneuvering cameras to aid pilots during taxi. Subsequent to the capacity number, designations may or may not append the range identifier (e.g., 777-300ER as "773ER", "773B", "77W", or "B77W"). By April 2014, with cumulative sales surpassing those of the 747, the 777 became the best-selling wide-body airliner; at existing production rates, the aircraft was on track to become the most-delivered wide-body airliner by mid-2016.
Boeing is also redesigning the inboard flap fairings to reduce drag by reducing pressure on the underside of the wing. In the same month, Boeing also received orders for 358 777X aircraft worth more than $ 100 billion from eight international airlines around the world.
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The test was so successful that additional mock-ups were canceled.
The earlier 777-200, 777-200ER and 777-300 versions are equipped with GE90, Pratt & Whitney PW4000, or Rolls-Royce Trent 800 engines.
Nine different 777-200 customers have taken delivery of 88 aircraft, with 79 in airline service as of July 2015. Program sales accounted for an estimated US$400 million of Boeing's pretax earnings in 2000, US$50 million more than the 747. When referring to different variants, Boeing and airlines often collapse the model number (777) and the variant designator (777-200 or 777-300) into a truncated form (e.g., "772" or "773").
The production process included substantial international content, an unprecedented level of global subcontracting for a Boeing jetliner, later exceeded by the 787. International contributors included Mitsubishi Heavy Industries and Kawasaki Heavy Industries (fuselage panels), Fuji Heavy Industries, Ltd. (center wing section), Hawker de Havilland (elevators), and Aerospace Technologies of Australia (rudder). Prior to returning to power as Prime Minister of Lebanon, Rafic Hariri acquired a 777-200ER as an official transport. 777s have served as official government transports for nations including Gabon (VIP-configured 777-200ER), Turkmenistan (VIP-configured 777-200LR), and the United Arab Emirates (VIP-configured 777-200ER and 777-300ER operated by Abu Dhabi Amiri Flight).
On October 14, 1990, United Airlines became the 777's launch customer when it placed an order for 34 Pratt & Whitney-powered aircraft valued at US$11 billion with options on an additional 34.
Using two engines produces a typical operating cost advantage of around 8-9% for the 777-300ER over the A340-600. The company has been in discussion with several airline customers, including FedEx Express, UPS Airlines, and GE Capital Aviation Services, to provide launch orders for a 777 BCF program.
These regulations allowed twin-engine airliners to make ocean crossings at up to three hours' distance from emergency diversionary airports.
The aircraft is scheduled to enter service in 2020.The Boeing 777-9X design was carried out by the Boeing engineering team based in Charleston, Huntsville, Long Beach, Philadelphia and St. Louis, USA, with the help of the Boeing Design Center in Moscow.
The main purpose has been for VIP transport, including as an air transport for heads of state, although the aircraft has also been proposed for other military applications.