The Boeing 737 series
With its comparatively low price and good fuel efficiency, the 737 series had emerged as Boeing’s most successful model family. The company offers the 737-Max and Next-Generation 737 series. There are four variants of the 373-Max series, while the Next-Generation 737 family comprises the following models: 737-700, 737-800, and 737-800. The 737 family accounted for almost one third of Boeing’s revenue in the 2018 fiscal year. After a sequence of crashes between October 2018 and March 2019, virtually all 737-MAX planes were grounded, sending Boeing shares tumbling. In the aftermath of the groundings, Boeing's orders for 737 models fell from 837 in 2018 to only 69 in 2019.