The deal is worth 13.75 billion USD at catalogue prices and deliveries are due to start in 2018, Airbus said on the second day of the Farnborough airshow near London.
Plans for the neo, a new version of the long-standing A330 with upgraded Rolls-Royce engines, were launched by Airbus at the key industry event on Monday.
"AirAsia X, the long-haul affiliate of Asia's largest low-cost airline (Air Asia), has signed a memorandum of understanding with Airbus for 50 A330-900neo aircraft," said a statement.
"The agreement sees the airline become a launch customer for the latest version of the best-selling widebody. AirAsia X will also be one of the first operators of the aircraft," Airbus added.


Latest News  from Business News Desk