The Celier Xenon 4 (also referred to by the manufacturer as the Xenon IV) is a Maltese autogyro designed by Raphael Celier and produced by Celier Aviation of Safi, Malta. The aircraft is supplied complete and ready-to-fly.
The Xenon 4 is a development of the Celier Xenon 2 and Celier Xenon 3, with a newly designed fuselage and longer tailboom. It features a single main rotor, a two-seats-in side-by-side configuration enclosed cockpit, with some models offering a third seat. It has tricycle landing gear and a modified four cylinder, liquid and air-cooled, four stroke turbocharged Rotax 912 engine in pusher configuration.
The fuselage is a monocoque made from carbon fiber reinforced polymer and features a cabin internal width of . The two-bladed rotor has a diameter of and a chord of . The aircraft has a typical empty weight of and a maximum gross weight of , giving a useful load of . With full fuel of the payload for the pilot, passengers and baggage is .