General Characteristics:

Crew: 2 pilots, 1 or more crew chiefs
Capacity: 37 troops (55 in alternate configuration) or 24 stretchers
Length: 88 ft 6 in (26.97 m)
Rotor diameter: 72 ft 2.7 in (22.01 m)
Height: 24 ft 11 in (7.6 m)
Empty weight: 23,628 lb (10,740 kg)
Loaded weight: 33,500 lb (15,227 kg)
Max takeoff weight: 42,000 lb (19,100 kg)
Powerplant: 2× General Electric T64-GE-413 turboshaft, 3,925 shp (2,927 kW) each
Width (stub wings): 28 ft 4 in (8.64 m)
Width (fuselage): 15 ft 6 in (4.7 m)
Rotor systems: 6 blades on main rotor

Performance:

Maximum speed: 170 knots (196 mph, 315 km/h)
Cruise speed: 150 kt (173 mph, 278 km/h)
Range: 540 nmi (1,000 km)
Ferry range: 886 nmi (1,640 km)
Service ceiling: 16,750 ft (5,106 m)
Rate of climb: 2,460 ft/min (12.5 m/s)

Armament:

Two door mounted .50 BMG XM218 machine guns.
Some have a ramp mounted .50 BMG GAU-21 machine gun.