U.S. regulator, Boeing complete 737 MAX certification test flights

The Federal Aviation Administration and Boeing Cohave completed certification test flights on the 737 MAX, a key milestone toward the plane's return to service, the U.S. regulator said on Wednesday.The MAX has been grounded since March 2019 after two fatal crashes in five months killed 346 people."The agency is following a deliberate process and will take the time it needs to thoroughly review Boeing's work," the FAA said.