<item><hi format=bold>Rotor system:</hi> main rotor diameter 53 ft 8 in (16.36 m); tail rotor diameter 11 ft 0 in (3.35 m). Main rotor disc area 2.261.0 sq ft (210.05 m<su>2</su>); tail rotor disc area 95.0 sq ft (8.83 m<su>2</su>)
<item><hi format=bold>Fuselage and tail:</hi> length overall, rotors turning 64 ft 10 in (19.76 m) and fuselage including retracted flight refueling probe 57 ft 0.25 in (17.38 m); height overall, rotors turning 16 ft 10 in (5.13 m) and to top of rotor hub 12 ft 4 in (3.76 m); tailplane span 14 ft 4.5 in (4.38 m); wheel base 29 ft 0 in (8.84 m)
<item><hi format=bold>Powerplant:</hi> two General Electric T700-GE-700, each rated at 1,560 shp (1,163 kW)
<item><hi format=bold>Weight:</hi> maximum take-off 22,000 lb (9,979 kg)
<item><hi format=bold>Fuel and load:</hi> internal fuel 360 US gal (1,361 liters); auxiliary internal fuel 117 US gal (443 liters); external fuel two 450- or 230-US gal (1,703- or 871-liter) drop-tanks; maximum payload 8,000 lb (3,629 kg)
<item><hi format=bold>Speed:</hi> maximum level speed 'clean' at sea level about 184 mph (296 km/h)
<item><hi format=bold>Range:</hi> endurance with maximum fuel 4 hours 51 minutes
<item><hi format=bold>Performance:</hi> maximum vertical rate of climb at sea level more than 450 ft (137 m) per minute; service ceiling 19,000 ft (5,790 m)
