The long awaited Boeing new generation triple-seven, the 777X, is about to debut, the manufacturer has announced.

Boeing revealed the roll out of its first the first 777-9X will take place at their Everett facility in Seattle on March 13, 2019. The company shared the news on Twitter:

The flight tests for the 400-seat aircraft should begin later in the year, with the first delivery to Emirates expected for 2020. The longer range -8 variant will have to wait. Both aircraft are powered by the massive General Electric GE9X engines, which were fitted on the first plane in January 2019.

The debut of the biggest turbine engine in the world installed on the largest plane Boeing ever built is closer than you might think. Reports indicate the airframer has finally paired the gigantic GE9X engine with its highly anticipated 777X jet, the latest version of the long-haul wide-body 777 airliner. The flight test plane is set to roll out next month showcasing its massive power plant.

The Boeing 777X is expected to be “the largest and most-efficient twin-engine jet in the world,” according to the manufacturer, which also promises airlines a 12% lower fuel consumption and a 10% lower operating costs than “competing airplanes”.

In late February 28, 2019, Boeing announced new customer for the upcommer aircraft.  IAG, the parent company of British Airways, ordered 42 777Xs (18 orders and 24 options), worth $18.6 at list prices. The deal boosted 777X orderbook to 358 orders and commitments from eight customers.

After a shaky beginning of the year for its new jetliner, Boeing is putting all efforts to show the  777X program is well on track. A week ago it assembled the first flight test version of the new widebody, having completed the ground test model in September. The already famous folding wing tips gained the Federal Aviation Administration’s approval  back in May 2018. But as program testing appears to be on course for the launch date in 2020, the 777X order book remains stuck in 2017.