Wednesday, Boeing announced plans to fit new more efficient CFM International Leap-X engines to members of its 737 family of aircraft, offering potential fuel savings of more than 10 percent on existing airframes. The new engines are not plug-and-play -- Boeing will have to re-engineer its planes to accept the engines and associated systems -- and Boeing's decision is not yet etched in stone. A final decision is expected by fall, but the option has reportedly been extended to American Airlines as part of the airline's massive order for at least 460 new aircraft split between Boeing and Airbus. The order is said to include 100 re-engined Boeings. And it may put pressure on certain other manufacturers' clean-sheet designs.
This is a companion discussion topic for the original entry at https://www.avweb.com/news/boeing-to-re-engine-737