Boeing begins crucial certification test flights for grounded 737 MAX

SEATTLE/WASHINGTON (Reuters) - A Boeing Co 737 MAX took off on Monday 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, around 12:55 p.m. EDT (0955 PDT/1655 GMT). It was scheduled to land two hours later at Moses Lake airport in eastern Washington,..