Here’s how much different the Boeing 777X’s engines are compared to the 777-300ER

The transition from the GE90 to the GE9X marks the end of the brute force era of engine design.
The Spokesman-Review

Boeing, GE analyzing potential durability issue on 777X engines

GE Aerospace said on Monday it is analyzing a potential durability issue with the GE9X engine that powers Boeing’s 777X. Company officials cautioned that it was too early to ‌draw conclusions about ...
Aviation Week

GE Studies 747 Flying Testbed ‘Dust Buster’ Plan For GE9X In Dubai

DUBAI—As part of extensive preparations for entry-into-service of the Boeing 777-9 in the Middle East, GE Aerospace is studying a potential deployment of its 747-400 flying testbed equipped with a ...