Volaris (Y4, México City International) has signed a Letter of Intent with an unnamed aircraft lessor for 16 aircraft, comprising ten new A320neo and six new A321neo. The Airbus (AIB, Toulouse Blagnac) neo aircraft will be powered by Pratt Whitney's PW1100G motors. In terms of deliveries, two A320neos are due in 2016 with an additional four each due in 2017 and 2018 respectively. The A321neos are scheduled to commence delivery in 2017 with two aircraft followed by four in 2018. The transaction is subject to the conclusion of satisfactory final documentation and customary corporate approvals. These aircraft are in addition to the 50 aircraft under Volaris' existing order and operating lease arrangements that are scheduled for delivery between 2014 and 2020.