The largest and heaviest twin-engine aircraft to see service with the Army Air Forces, this transport gained its greatest fame in airlifting supplies over "the Hump" (the Himalaya Mountains) in the China-Burma-India theater in World War II, although it saw action in every theater. The C-46 began its career as a pressurized, 36-passenger airliner with twin rudders, but the Army saw greater utility for the aircraft as a transport. The AAF bought the prototype in 1941, modified it to have a single fin, and designated it C-55. Demand for the C-46 grew rapidly, and manufacturing began at the new Curtiss plants in Louisville, Ky., and Saint Louis, Mo. The aircraft division of Higgins Industries (the New Orleans, La.–based boatbuilder that constructed most of the landing craft used in World War II) was given a contract for 500 aircraft, but only two C-46As were completed. A total of 1,490 C-46As were built, which included 160 R5Cs for the Marine Corps. The other major variant was the C-46D, with 1,410 aircraft built. The C-46 could carry more payload than its more famous stablemate, the C-47, and it offered better high-altitude performance, which was one of the reasons it was used so extensively in the CBI. C-46 crews began flying the hazardous air route over the Himalayas in 1943 after the Japanese closed the Burma Road. However, as a result of the CBI's harsh conditions, the type had a relatively high loss rate, and maintenance was a problem. In Europe, the C-46 was used to drop paratroopers during the Rhein River crossing in March 1945. The C-46 could tow two CG-4 gliders. The C-46A, D, and F models were used in Korea, and a few aircraft were used by Air Force Special Air Warfare Center in the early years of the Vietnam War. C-46s were in limited Air Force service as late as 1969. Many went into civilian hands after World War II, and a fair number are still in use today.

Contractors:	Curtiss-Wright Corp.
	Higgins Aircraft Co.
Locations Built:	Buffalo, N. Y., Louisville, Ky., and St. Louis, Mo.
	New Orleans, La.
Number Built: (USAF)	3,182 (3,022)
First Flight:	March 26, 1940
First Flight Model:	Civilian CW-20T
First Flight Location:	St. Louis, Mo.
First Flight Pilot:	Edmund T. "Eddie" Allen (on loan from Boeing)
Models/Variants:	C-46A, D, E, F
Powerplant:	Two Pratt & Whitney R-2800-51 Double Wasp 18-cylinder, twin-row radials of 2,000 hp each
Wingspan:	108 ft 1 in.
Length:	76 ft 4 in.
Height:	21 ft 9 in.
Weight:	56,000 lb gross
Armament:	None
Accommodation:	Crew of four (pilot, copilot, navigator, and flight engineer/loadmaster) and 50 troops or 33 litters with four attendants or 15,000 lb of cargo
Cost:	$233,000
Max. Speed:	269 mph
Range:	1,200 mi.
Ceiling:	27,600 ft.