Enormous engines like the GE90 had to be developed to power the 777, primarily because it has two turbofans rather than four.

However, the engines on neither of these two aircraft are the most powerful in our skies today, as that honor would uniquely ...

The cost of a new 777X is in the low hundreds of millions, while the cost of a mid-life 777-300ER is in the tens of millions.

GE Is Checking Final Boxes As 777-9 Approval Nears is available to both Aviation Week & Space Technology and AWIN subscribers. Get free aerospace news, insight and analysis from our award-winning ...