Why Can’t The Boeing 737 MAX Be Powered By Any Other Engine Type?

The Boeing 737 MAX is one of the most commercially important airliners ever built. The MAX version is the latest evolution of the Boeing 737 series, whose lineage stretches back to 1967. Over the decades, Boeing refined the aircraft while retaining its low-slung stance and compact geometry. When Airbus launched the Airbus A320neo with dramatically more efficient engines, Boeing faced intense pressure to respond, but without reshaping the 737 from scratch.