Boeing is preparing to launch a battery of systems tests inside its very first 777X test jet and install interiors after powering up the aircraft.

The tests and a series of other equipment installations must be completed before the new 777X rolls out of the factory in Everett for its very first flight sometime in 2019.

“We are super excited to finish our functional tests and see the airplane fly,” Samantha Jarema, an industrial engineering manager on the 777X low-rate initial production line, said…

Seattle Biz Journal
Boeing starts key 777X tests to prepare for the new jetliner's first flight