Avolon has ordered 140 CFM International Leap-1A engines to power 70 on-order Airbus A320neos.
The order, which Avolon notes has a list-price value of $2 billion, is the largest the lessor has made to date, and means that 105 of its A320neo-family jets will be Leap-powered.
Avolon notes that it has placed orders for a total of 240 A320neo-family aircraft, 42 of which have been delivered.
"We are delighted to continue our long-standing relationship with CFM," states chief executive Domhnal Slattery. "Our commitment to the Leap engine reflects our confidence in CFM's track-record of designing and building world-class engines."