Helicopters F 28: Specifications Enstrom 280L Hawk Type - light utility helicopter Accommodation - 4 seats Powered by - 1 x 225hp Avco Lycoming HIO-360-G1AD 4-cylinder horizontally-opposed engine Performance Maximum speed - 117mph (188kmh) at sea level Maximum cruising speed - 106mph (170kmh) Maximum inclined climb - 1,000ft/min (5,1m/sec) Hovering ceiling (in ground effect) - 8,000ft (2438m) Maximum range - 203mls with no reserves Weights Standard empty weight - 1,562lbs (709kg) Maximum take-off weight - 2,600lbs (1250kg) Dimensions Rotor diameter - 34ft (10,36m) Length overall - 32ft4in (9,84m)