With the new order from Airbus for 300 copies of the A320neo family, IndiGo becomes the largest customer of Airbus History with a total of 830 aircraft ordered, far ahead of the lessors Gecas (608) and ILFC (600), all models included. Behind this record order, the engine manufacturers CFM International and Pratt & Whitney are fighting a merciless battle. To propel its first Airbus A320neo aircraft from previous contracts, IndiGo chose the Pratt & Whitney PW1100G. Then, at the last Paris Air Show, the Indian airline switched to CFM Leap-1A to equip another 280 Airbus A320neos and A321neos. A contract worth $20 billion, list price, in favor of the engine designed and developed by General Electric and Safran Aircraft Engines. Hence, these additional 300 Airbus single-aisle aircraft become crucial in the commercial battle, concerning the European medium-haul, the two engine manufacturers are engaged on. CFM International is intent on maintaining its advantage while Pratt & Whitney wants to regain lost ground. “The choice of engine manufacturer for this order will be made at a later date”, said Riyaz Peermohamed, Chief Aircraft Acquisition and Financing Officer of IndiGo