Indian low-cost airline Go Air signalled Tuesday its intention to buy 72 Airbus A320neos worth $7.7 billion at list prices, making it the biggest deal so far at the Farnborough airshow.

The order, worth the equivalent of 6.9 billion euros, takes Go Air's total order to 144 of the single-aisle fuel-efficient airplanes, Airbus said in a statement. Airlines tend to command steep discounts on such large purchases.