Outline the tragedy that occurred between March 2019 and December 2020, when two Boeing planes mysteriously crashed, causing the deaths of 346 people. As a result, the Boeing 737 MAX passenger airliner was grounded. While the U.S. Federal Aviation Administration resisted grounding the planes initially, they quickly discovered evidence of similar accidents, and by March 18th, 2019, all 387 aircraft were grounded.
