European planemaker Airbus said Hong Kong Airlines signed a memorandum of understanding to buy 51 planes in a deal worth some $5.6 billion at list prices.

The deal includes 30 A320 family narrowbody planes and 20 A330 widebody aircraft, Airbus told a news conference at the Paris air show on Thursday.

Hong Kong Airlines also agreed to buy an Airbus Corporate Jet, the planemaker added.

The carrier will choose engines for the aircraft at a later date, Airbus added.