The Robinson R-44 is two-bladed, 4 seat light helicopter made by Robinson Helicopter Company, based off their R-22 design. The R44 was designed in 1980s by Frank Robinson, and had its first flight in March 1990. After further testing, the first production model of the R-44 was delivered on February 1993. The R44 is powered by a Lycoming IO-540-AE1A5 6 cylinder flat engine with fuel injection rated at 245 bhp.
Over 5600 R-44 helicopters have been produced, and it has become a popular choice for helicopter flight schools. The R-44 is used for the majority of rotorcraft training at Upper Limit Aviation.