Dhaka, May 6 -- Airbus is preparing for what it describes as a "historic" announcement for its A220 program, with multiple reports linking the event to a major order from Malaysian low-cost carrier AirAsia.

The announcement is scheduled for May 6 at the A220's Mirabel assembly facility in Quebec, where the type is assembled for non-US customers. Canadian Prime Minister Mark Carney is expected to attend, highlighting the program's significance to Canada's aerospace industry.

While Airbus has not formally identified the customer, multiple reports indicate AirAsia is poised to order approximately 150 A220 jets. A deal of that scale would rank among the most significant orders in the program's history and represent a major win for Airbus in...