The New Boeing 777X Has Wings That Fold Up and the World's Largest Twin-Engine

The plane boasts the world’s largest and most efficient twin-engine jet.
Loukia Papadopoulos

On Saturday, the new Boeing 777X took flight heading to Paine Field north of Seattle. It was the aircraft's first flight.


The new model is notably impressive due to its wings that fold up, but it actually has many other merits.

The largest, most efficient twin-engine jet

"The new Boeing 777X will be the world’s largest and most efficient twin-engine jet, unmatched in every aspect of performance. With new breakthroughs in aerodynamics and engines, the 777X will deliver 10 percent lower fuel use and emissions and 10 percent lower operating costs than the competition," says the plane's Boeing page.

That sounds pretty impressive, but what are the fold-up wings for? They serve to cut the aircraft's giant wingspan from 235 feet down to under 213 feetThe wings, therefore, make it possible for the 777X to fit on existing airport taxiways.

The 777X will come in two models: the 777-8 and the 777-9. The first will fit about 384 passengers while the second 426 passengers. The 777-9 can also boast that it is the longest commercial airplane.

"A true family, the 777X offers low-risk, profitable growth, industry-leading reliability and seamless integration with the 777 and 787 Dreamliner families for even more flexibility. But performance is just part of the story. With a spacious, wide cabin, new custom architecture and innovations from the 787 Dreamliner, the 777X will deliver the flight experience of the future," says the plane's Boeing page.

Although the plane is still awaiting approval from the Federal Aviation Administration and other aviation bodies worldwide, it already has orders from eight airlines, including British Airways, Cathay Pacific, Emirates, Lufthansa and Singapore Airlines.

This is good news for Boeing, who has suffered recently due to the 737 Max twin crashes. The incidents saw a total of 346 passengers and crew die.

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