Ten Years Of The Leap Engine Programme

The Leap engine that powers the Airbus A320neo and Boeing 737 Max families, is the result of a carefully crafted strategy worked out by its maker, CFM. Aware that it would sell in large numbers, the Leap production is robust and offers no single manufacturing choke point that could seriously hurt the production rate. A close look at the LEAP's rise to stardom.

On July 13, 2008, GE Aviation and Safran Aircraft Engines, partners in the 50/50 CFM International joint venture, made aviation history by launching the advanced LEAP-X engine programme. Ten years later, this engine is delivering everything that was promised that day and more.

“That was a great day for CFM and a bold move for GE and Safran Aircraft Engines,” said Gaël Méheust, President and CEO of CFM International. “That day, they committed to a multi-billion-dollar engine development programme that, at the time, did not have an airplane application. But the parent companies were so confident in the joint venture and its future that they also renewed the partnership agreement to the year 2040.”

The first engine application didn’t come until about 18 months later, when COMAC chose the LEAP engine to be the sole Western powerplant for its new 150-passenger C919 in December 2009.

A year later, Airbus chose the LEAP engine as an option for its A320 new engine option aircraft. In November 2011, Boeing made the LEAP engine the sole powerplant for its new 737 MAX programme.

All the while, CFM maintained a rigorous development schedule, ticking off milestones on schedule, if not ahead of schedule. In fact, all three engine models were certified within one year.

LEAP: The material advantage

Incorporating advanced, light-weight materials into its LEAP engine, CFM is leading a new technology revolution.

The foundation of CFM's advanced LEAP engine is heavily rooted in fourth-generation aerodynamic design and environmental technology, but it is the advanced materials the company is introducing in this engine – most of them industry firsts – that are changing the way aviation looks at jet propulsion and laying a solid technology pathway for the future engine developments.