Huge Boost: Boeing Fires Up 4th 737 MAX Assembly Line, 1st In Everett Mega-Factory

American plane manufacturer Boeing has celebrated the opening of a new assembly line at its Everett plant July 6. This will become the second manufacturing site for the Boeing 737 MAX family of planes, and supports Boeing’s long-term plan to dedicate the Everett line for the MAX 10, once the plane receives its certification, hopefully by the end of this year.