Boeing’s 737 Max is a more fuel-efficient version of the American aerospace company’s popular 737, the best-selling airliner ever. Airlines have flown Max jets for just seven years, but in that short time two of them crashed, killing 346 people, and the plane has become a symbol of safety concerns swirling around Boeing. Regulators around the world grounded all Max jets in March 2019, after the second crash. That led to the ousting of Boeing’s CEO. His successor announced plans to step down after the Federal Aviation Administration grounded a particular model of the Max in January, when a panel covering an unused emergency exit blew off an Alaska Airlines Max in flight.
