The Boeing 737 MAX is the fourth generation of the Boeing 737, a narrow-body airliner manufactured by Boeing Commercial Airplanes (BCA), a division of American company Boeing. It succeeds the Boeing 737 Next Generation (NG) and competes with the Airbus A320neo family. The new series was announced on August 30, 2011. It took its maiden flight on January 29, 2016 and was certified by the United States Federal Aviation Administration (FAA) in March 2017. The first delivery was a MAX 8 in May 2017 to Malindo Air, with which it commenced service on May 22, 2017.

The 737 MAX is based on earlier 737 designs, with more efficient CFM International LEAP-1B engines, aerodynamic changes, including distinctive split-tip winglets, and airframe modifications. The 737 MAX series has been offered in four variants, offering 138 to 204 seats in typical two-class configuration, and a range of 3,300 to 3,850 nautical miles (6,110 to 7,130 km). The 737 MAX 7, MAX 8 (including the 200–seat MAX 200), and MAX 9 are intended to replace the 737-700, -800, and -900 respectively, and a further-stretched 737 MAX 10 is available. As of September 2022, the 737 MAX has 4,166 unfilled orders and 926 deliveries.

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