Boeing 737 MAX certification flight test expected soon

A key step in the return to service of the grounded Boeing 737 MAX could take place as soon as early next week, two people briefed on the matter said on Friday. Boeing Co's best-selling plane has been grounded since March 2019 after two fatal crashes killed 346 people. A certification flight test, which is expected to last at least two days, is likely to take place starting as early as Tuesday but has not been finalized.