Boeing 777X, the world's longest plane, has taken to the skies for the first time ever, making aviation history in the process, the Independent newspaper has reported.
The newly-unveiled twin-engine plane can carry up to 426 passengers on board and has already been ordered by the British Airways to replace the 747 Jumbo.
"It made all of our employees proud one more time of who we are and what we get to do, by flying a brand new airplane that is going to change the world one more time," the chief executive of Boeing's commercial airplane unit, Stan Deal said as quoted by the Bangkok Post.
It took 7 years to build the plane which has a length of 77 metres, a world record.
According to a report by the Times newspaper, the plane took to the skies from Paine and made rounds over Washington in a 4-hour test flight.
The fuel-efficient plane flew amid the turmoil that its manufacturer Boeing is facing following the crashes of two Max 8 planes just within months of each other.
Boeing says that the plane's aerodynamics and the engine will enable it to consume fuel at a lower rate than the 747 Jumbo.
The 777X is expected to officially enter service next year.