-- AirAsia X (KLSE:AAX) unit Asia Aviation Capital agreed to buy 150 Airbus A220-300 aircraft from Airbus in a deal valued at about $19 billion, according to a Thursday Malaysian bourse filing.
Shares fell over 2% in Friday's midday trade.
The aircraft are scheduled for delivery from 2028 through 2039, with the group retaining an option to increase the order to 300 aircraft to meet future demand.
AirAsia X said the A220 aircraft will support its transition into a low-cost network carrier by enabling it to serve smaller and high-growth markets more efficiently.
The airline added the jets are expected to reduce fuel burn and emissions by about 20% compared with previous-generation aircraft.
The group also entered into engine supply and maintenance agreements with Pratt & Whitney for the aircraft's PW1521G-3 engines, the filing said.