JetBlue has agreed to buy 86 PW1100G geared turbofans to power and provide spares for the 40 Airbus A320NEOs the low-fare carrier is buying.

A total of seven A320NEO customers have opted for the PW1100G, one fewer than rival CFM International has secured for the Leap-1A (some lessors are buying engine from both). CFM also holds the edge of the number of NEOs it is currently set to power, although many customers have yet to make their engine choice.

The JetBlue deal, which is still a memorandum of understanding, includes a long-term support agreement. The airline should receive its first NEOs in 2018.

Pratt & Whitney was the front runner in the competition, since the airline already uses International Aero Engines V2500s on its current A320 fleet.

The PW1100G will be the lead engine Airbus uses for the NEO certification process, with entry-into-service planned with Qatar Airways in 2015.