The Aero Eli Servizi Yo-Yo 222 (sometimes written YoYo) is an Italian helicopter designed and produced by Aero Eli Servizi of L'Aquila.
[1] The Yo-Yo 222 was initially designed for a higher gross weight of 495 kg (1,091 lb), but later versions were lightened to allow a gross weight of 450 kg (992 lb) 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 172 hp (128 kW) Lycoming O-320 engine.
[1] 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.
"[1] For lightness the aircraft fuselage is made with extensive use of carbon fiber reinforced polymer and fibreglass.