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A Boeing 737 from Southwest Airlines: 747: 18 wheels [1x2]+[4x4] A Boeing 747-400's main landing gear. Note the toes-up bias angle of the bogies on the wing gear, to ensure correct stowage upon retraction: 707, 720, 757, 767, 787: 10 wheels [1x2]+[2x4] A Boeing 757-200 from British Airways: 777: 14 wheels [1x2]+[2x6] A Boeing 777-200 from ...
The landing gear represents 2.5 to 5% of the maximum takeoff weight (MTOW) and 1.5 to 1.75% of the aircraft cost, but 20% of the airframe direct maintenance cost. A suitably-designed wheel can support 30 t (66,000 lb), tolerate a ground speed of 300 km/h and roll a distance of 500,000 km (310,000 mi) ; it has a 20,000 hours time between overhaul and a 60,000 hours or 20 year life time.
The first generation of Boeing 777 models, the -200, -200ER, and -300 have since been known collectively as the Boeing 777 Classics. [70] These three early 777 variants had three engine options ranging from 77,200 to 98,000 lbf (343 to 436 kN): General Electric GE90, Pratt & Whitney PW4000, or Rolls-Royce Trent 800. [70]
This structure is typically considered to include the fuselage, undercarriage, empennage and wings, and excludes the propulsion system. [2] Airframe design is a field of aerospace engineering that combines aerodynamics, materials technology and manufacturing methods with a focus on weight, strength and aerodynamic drag, as well as reliability ...
The aircraft involved was a Boeing 777-222, the United Airlines specific variant of the original 777-200 series, registered as N773UA, (c/n 26929) and line number 4. It was powered by two Pratt & Whitney PW4000 engines and was 23.3 years old, having made its first flight on October 28, 1994. [5]
Sam Mohawk, a Boeing employee of 13 years, claimed on "60 Minutes" that some factory workers took flawed airplane parts from storage and installed them on airplanes in order to keep production ...
Flight path of United Airlines Flight 328. On February 20, 2021, United Airlines Flight 328 (UA328/UAL328), a scheduled U.S. domestic passenger flight from Denver to Honolulu, suffered what was technically ruled a contained engine failure [2] despite shedding large pieces of debris, approximately four minutes after takeoff from Denver International Airport (DEN).
Investigators have recovered a piece of fuselage that tore off the left side of an Alaska Airlines-operated Boeing 737 MAX 9 jet shortly after taking off from Portland, Oregon, on Friday that ...