With 20 percent more wing area than the current fleet ... For the new 777 to operate with the size constraints of modern airport, Boeing's engineers had to design a unique folding wingtip.

It's unique, but not a new design, and will allow the aircraft to serve both Category E and Category F airports.

The source said there is a unique element to the Boeing 777’s flaperon, a wing component ... 7 crashes and there haven’t been any in this area,” said CNN aviation analyst Mary Schiavo.

Still, the Boeing 777-9 version of the X is almost 15 feet ... However, the unique folding wing design proved a pivotal element in the 777X's development because the jet's full width made it ...

Boeing announced the first order for its upcoming BBJ 777-9 business aircraft on Monday ... Source: Boeing, The folding wing tips on Boeing's massive new 777X are a first in commercial aviation.