Technical Specs

Powerplant

• Two Allison T406-AD-400 engines
• Max and intermediate, shp (kW) -- 6,150 (4,,586)

Rotor System

• Blades per hub -- 3
• Construction -- graphite/fiberglass
• Tip speed, fps (mps) -- 661.90 (201.75)
• Diameter, ft (m) -- 38.00 (11.58)
• Blade area, ft2 (m2) -- 261.52 (24.30)
• Disc area, ft2, (m2) -- 2,268.00 (210.70)
• Blade folding - automatic, powered

Transmissions

• Takeoff [USMC], shp (kW) -- 4,570 (3,408)
• Takeoff [USN], shp (kW) -- 4,970 (3,706)
• Takeoff [USAF], shp (kW) -- 4,970 (3,706)
• 1 engine inoperative, shp (kW)
  5,920 (4,415)

Performance

• Max speed, SL, kts (km/h) -- 275 (510)
• Vert rate of climb, SL, fpm (m/m)
  1,090 (332)
• Max rate of climb, SL, fpm (m/m)
  2,320 (707)
• Service ceiling, ft (m) -- 26,000 (7,925)
• Service ceiling, one engine inop, ft (m)
  11,300 (3,444)
• HOGE, ft (m) -- 14,200 (4,328)

Range

• Amphib assault, nm (km) -- 515 (954)
• Max, self-deployment, nm (km)
  2,100 (3,892)

Crew

• Cockpit -- crew seats -- 2
• Cabin -- troop seats/litters -- 24/12

Dimensions -- Internal

• Length, max, ft (m) -- 24.17 (7.37)
• Width, max, ft (m) -- 5.92 (1.80)
• Height, max, ft (m) -- 6.00 (1.83)

Weights

• Empty, lbs (kg) -- 33,140 (15,032)
• Takeoff, vertical, max, lbs -- 47,500 (21,546)
• Takeoff, short running, max, lbs (kg)
  55,000 (24,948)
• Takeoff, self-deploy mission, lbs (kg)
  60,500 (27,443)
• Cargo hook, single, lbs (kg) -- 10,000 (4,536)
• Cargo hook, dual, lbs (kg) -- 15,000 (6,147 )

Dimensions -- External

• Length, fuselage, ft (m) -- 57.33 (17.48)
• Width, rotors turning, ft (m) -- 83.33 (25.55)
• Length, stowed, ft (m) -- 62.58 (19.08)
• Width, stowed, ft (m) -- 18.42 (5.61)
• Width, horizontal stabilizer, ft (m) -- 18.42 (5.61)
• Height, nacelles fully vertical, ft (m) -- 21.76 (6.63)
• Height, vertical stabilizer, ft (m) -- 17.65 (5.38)

Fuel Capacity

• Sponsons, gals (liters) -- 1,228 (4,649)
• Wings, gals (liters)-- 787 (2,979)
• Aux, self-deployment, gals (liters) -- 2,436 (9,221)