Lessor CIT Aerospace has firmed up its order with Airbus for 50 A320neos.
The company signed a memorandum of understanding for the aircraft during the Paris air show in June.
CIT selected the Pratt & Whitney PW1100G to power 30 of the aircraft when it signed the MoU in June. It selected CFM International's Leap-X1A to power another 15 Neos.
CIT could not immediately be reached to comment on whether an engine selection had been made for the remaining five aircraft.
Source: Air Transport Intelligence news