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It may be complemented by a secondary attitude air data reference unit (SAARU), as in the Boeing 777 design. [ 3 ] This device is used on various military aircraft as well as civilian airliners starting with the Airbus A320 [ 4 ] and Boeing 777 .
United Airlines Airbus A320 (foreground) and Boeing 737-900 (background) on final approach 737 vs A320 family deliveries per model 1967–2018. Airbus sold the A320 family aircraft well to low-cost startups, and the choice of engines was offered to make it more attractive to airlines and lessors than the single-sourced Boeing 737 family.
The most well-known is the system of normal, alternate, direct laws and mechanical alternate control laws of the Airbus A320-A380. [3] The other is Boeing's fly-by-wire system, used in the Boeing 777, Boeing 787 Dreamliner and Boeing 747-8. [4] [6]
In 1978, Boeing unveiled three new models: the twin-engine or twinjet Boeing 7N7 (later named Boeing 757) to replace its 727, the twinjet Boeing 7X7 (later named 767) to challenge the Airbus A300, and a trijet "777" concept to compete with the DC-10 and L-1011.
The narrow-body fleet is composed of Boeing 737 Next Generation aircraft which will be replaced by Airbus A320neo family aircraft in 2024. Airbus A330, Boeing 777 and Boeing 787 Dreamliner wide-body aircraft are used on medium and long-haul flights. In September 2023, Air France-KLM announced an order for 50 Airbus A350s.
Airbus A321-200 Boeing 767-300ER: One hijacked and crashed into the North Tower of the World Trade Center as Flight 11, as part of the September 11 attacks. [28] 10 2013 2015 Airbus A330-200: Former US Airways fleet. Never flew under American brand name. Boeing 767-300ER: 67 1988 2020 Airbus A321XLR Boeing 777-300ER Boeing 787 Dreamliner
ETOPS-180 was only possible after one year of trouble-free 120-minute ETOPS experience. In 1990 Boeing convinced the FAA that it could deliver an airliner with ETOPS-180 on its entry into service. This process was called Early ETOPS. The Boeing 777 was the first aircraft to be introduced with an ETOPS rating of 180 minutes.
In the Airbus, the flight envelope protection cannot be overridden completely, although the crew can fly beyond flight envelope limits by selecting an alternate "control law". [4] [10] [11] [12] Boeing took a different approach with the 777 by allowing the crew to override flight envelope limits by using excessive force on the flight controls ...