CH-34 "Choctaw" Helicopter Powerplant: Engine Type : One Wright Cyclone R-1820-84B/D @ 1,525hp Dimensions: Main Rotor Span: 56 feet Fuselage Length: 46 feet 9 inches Height: 14 feet 3 inches Takeoff wt. empty/max. 7,577 lbs. / 13,000 lbs. Performance: Maximum speed : 138 mph Combat range: 260 miles Service ceiling : 9,596 feet Accommodations: 18 troops or 8 medical litters Production: Approx. 20..