The Aero Eli Servizi Yo-Yo 222 (sometimes written YoYo) is an Italian helicopter designed and produced by Aero Eli Servizi of L'Aquila. The aircraft is supplied complete and ready-to-fly.
The Yo-Yo 222 was initially designed for a higher gross weight of , but later versions were lightened to allow a gross weight of to qualify under the European Class 6 microlight helicopter rules. The aircraft features a single main rotor and tail rotor, a two-seats-in side-by-side configuration enclosed cockpit, skid landing gear and an American-made four-cylinder, air-cooled, four stroke Lycoming O-320 engine.
Greatly resembling the Robinson R22, reviewer Werner Pfaendler, describes it as "obviously the result of a close look at the world's bestselling two-seater helicopter, the R22."
For lightness the aircraft fuselage is made with extensive use of carbon fiber reinforced polymer and fibreglass. Its two-bladed rotor has a diameter of . The initial version of the aircraft has a typical empty weight of and a gross weight of , giving a useful load of . With full fuel of the payload for the pilot, passenger and baggage is .