Enstrom F-28 - track version[/heading]
F-28 - lightweight three-digit helicopter engine Lycoming HIO-360-C1A; 15 pcs
F-28A - the main variant, different transmission and other adjustments; approximately 316 pcs
F-28C - a variant with an engine Lycoming HIO-360-E1AD and turbocharged Rajay; approx 130 pcs
F-28C-2 - analogue with a single-piece windshield and a new přístrojovkou; approx 50 pcs
F-28F Falcon - engine HIO-360-F1AD with Rajay turbocharged or Rotomaster, later reinforced transmission; 150+ pcs, still in production
280C Shark - similar to F-28C with a revised aerodynamic cab and up by a cylindrical flat; approx 230 pcs
the 280L Hawk - prototype čtyřmístvé variants
280F Shark - 280C with the modifications as u F-28F; 21? ks
280FX Shark - 280F with modified rails of the chassis, the cooling of the engine,the tail surfaces as on the 280L and other changes; 150+ pcs, still in production
480 - a three - to four-equivalent 280FX with turbohřídelovým engine Allison 250; 42 pcs
TH-28 - three-seat training variant of the 480, 6 pcs
480B - improved transmission, higher takeoff weight and other adjustments; 200+ pcs, still in production
TH-480B - the training equivalent of a 480B for Japan
Jackson, Paul. Jane's All the World's Aircraft 2004-2005. Jane's Information Group, Coulsdon 2004.
Taylor, John W. R. Jane's All the World's Aircraft 1979-80. Macdonald and Jane's, London 1979. ISBN: 0-531-03915-3.
Taylor, John W. R. Jane's All the World's Aircraft 1981-82. Jane's Publishing Company, London 1981. ISBN 0-7106-0729-6.
Lambert, Mark. Jane's All the World's Aircraft 1991-1992. Jane's Information Group, Coulsdon 1991. ISBN 0-7106-0965-5.
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Taylor, John W. R. Jane's All the World's Aircraft 1979-80. Macdonald and Jane's, London 1979. ISBN: 0-531-03915-3.
Taylor, John W. R. Jane's All the World's Aircraft 1981-82. Jane's Publishing Company, London 1981. ISBN 0-7106-0729-6.
Lambert, Mark. Jane's All the World's Aircraft 1991-1992. Jane's Information Group, Coulsdon 1991. ISBN 0-7106-0965-5.