Boeing’s 777X moved a step closer to reality with GE Aviation receiving FAA approval for the GE9X engine. Having completed just less than 5,000 hours and 8,000 cycles, the GE9X, which is based on the GE90 and fitted with a larger first-stage fan, is said to be 10 percent more fuel efficient than the GE90 and 5 percent better than comparably sized engines. The largest commercial turbofan in the world, it produces 110,000 pounds of thrust.
This is a companion discussion topic for the original entry at https://www.avweb.com/aviation-news/ge9x-engine-certified