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Boeing 737-400

Boeing 737-400
Boeing 737-400

The Boeing 737 is a narrow-body aircraft Created by Boeing Commercial Airplanes at its Renton Factory in Washington.

Developed to supplement the Boeing 727 on short and thin paths, the twinjet keeps the 707 fuselage cross-section and nose with two underwing turbofans. Envisioned in 1964, the first 737-100 made its first flight in April 1967 and entered service in February 1968 with Lufthansa. The lengthened 737-200 entered service in April 1968. It evolved through four generations, offering several variations for 85 to 215 passengers. The -100/200 original versions were powered by Pratt & Whitney JT8D low-bypass motors and provided seating for 85 to 130 passengers. Launched in 1980 and introduced in 1984, the 737 Classic -300/400/500 versions were re-engined with CFM56-3 turbofans and provided 110 to 168 seats. Launched in 1997, the 737 Next Generation (NG) -600/700/800/900 versions have updated CFM56-7s, a larger wing and an upgraded glass cockpit, and seat 108 to 215 passengers. The most recent generation, the 737 MAX -7/8/9/10, powered by improved CFM LEAP-1B high bypass turbofans and accommodating 138 to 204 people, entered service in 2017. Boeing Business Jet models are produced since the 737NG, as well as military models. As of December 2019, 15,156 Boeing 737s are ordered and 10,571 delivered. Initially, its main competitor was the McDonnell Douglas DC-9, followed by its MD-80/MD-90 derivatives. It was the highest-selling business aircraft until being surpassed by the competing Airbus A320 family in October 2019, but keeping the record in total deliveries. The 737 MAX, designed to compete with the A320neo was grounded worldwide in March 2019 following two fatal crashes. After system improvement required by FAA, the aircraft had completed a series of recertification test flights aim for ungrounding in the midyear 2020.

Source: Wikipedia