Boeing has been buffeted by more than five years of problems with its airplanes, including two fatal crashes of the 737 Max in 2018 and 2019 that killed 346 people, and most recently a door plug that blew out of the side of an Alaska Airlines 737 Max in January, leaving a gaping hole in the side of the plane. The problems have led to multiple groundings for safety issues and more than $31 billion in cumulative losses.