IndiGo has announced a 500-aircraft deal with Airbus, the largest in aviation history. The deal has topped the 470-aircraft deal recently signed by Air India. The order for 500 A320 Family aircraft sets the "record for the biggest single purchase agreement in the history of commercial aviation," Airbus said i a statement. "The latest agreement takes the total number of Airbus aircraft on order by IndiGo to 1,330, establishing its position as the world's biggest A320 Family customer, added the statement from Airbus.