Boeing 737 MAX begins key certification test flights

SEATTLE/WASHINGTON (Reuters) - A Boeing Co 737 MAX took off on Monday at 12:55 p.m. EDT (0955 PDT/1655 GMT) from a Seattle-area airport on the first day of certification flight testing with U.S. Federal Aviation Administration and company test pilots, a crucial moment in the planemaker's worst-ever crisis.Boeing Flight 701 departed King County International Airport, which is also known as Boeing Field, the FAA confirmed, saying it will conduct three days of tests. The plane is scheduled to land..