About two years after a pair of deadly crashes, the Boeing 737 Max plane is returning to the skies above Los Angeles as part of its gradual return to worldwide commercial service. With a slew of investigations, tests, upgrades and regulatory approvals behind it, a 737 Max carrying passengers is set to take off Thursday from Los Angeles International Airport for the first time since March 2019, when the jetliner was grounded worldwide. For the record: 8:06 AM, Feb. 11, 2021An earlier version of this story said the first 737 Max flight at LAX was bound for Houston. It will arrive from Houston and head to Denver.