Founded December 22, 1959 by Rudy Enstrom, Enstrom Helicopter Corporation manufactures a complete line of helicopters. The three-seat, piston-powered F28F and 280FX are popular training, sport, and light commercial aircraft. The larger turbine-powered 480B is available as a three-place advanced trainer and patrol aircraft, or as a three to five place executive transport. For law enforcement applications Enstrom produces a specialized variant of the 480B, known as the Guardian, and the F28F, called the Sentinel.