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Type: Troop and cargo transport
Origin: Curtis-Wright
Crew: N/A
Model: See variants list
First Flight:
    CW-20: March 26, 1940
Service Delivery: July 1942
Final Delivery: 1945
Number Produced: 3,000+
Engine:
CW-20T:
   Model: Pratt & Whitney R-2600 Twin Cyclone
   Type: Radial piston engine
   Number: Two       Horsepower: 1,700 hp

C-46:
   Model: Pratt & Whitney R-2800-43
   Type: Radial piston engine
   Number: Two       Horsepower: 2,000 hp

C-46A:
   Model: Pratt & Whitney R-2800-51
   Type: Radial piston engine
   Number: Two       Horsepower: 2,000 hp

XC-46B:
   Model: Pratt & Whitney R-2800-34W
   Type: Radial piston engine
   Number: Two       Horsepower: 2,100 hp

Projected AC-46K:
   Model: Pratt & Whitney R-3350-BD
   Type: Radial piston engine
   Number: Two       Horsepower: 2,500 hp
Dimensions:
Wing span: 108 ft. 0 in. (32.91m)
Length: 76 ft. 4 in. (23.26m)
Height: 21 ft. 9 in. (6.62m)
Lifting Surface Area: 1,360 sq. ft. (126.34m²)
   Weights:
Empty: 30,000 lb. (5945 kg)
Loaded: 45,000 lb. (7585 kg)

Performance: Estimated
Maximum Speed: 270 mph (435 kph) at 15,000 ft.
Cruising Speed: 173 mph (278 kph)
Service Ceiling: 24,500 ft. (7470m)
Range: 3,150 miles (5069 km) at cruising speed
Armament: None

Payload:
40 equipped troops.
Variants:
CW-20T: Original prototype.
CW-20A: Modification of original prototype with new tail. Evaluated by U.S. Army as C-55. Returned to Curtis and subsequently sold to BOAC.
CW-20B-1: Single conversion from a C-46A to evaluate a stepped windscreen. Designated XC-46B.
CW-20E: Project for AC-46K with new engines.
CW-20G: Testbed conversion from C-46G. Used to test GE TG-100 turboprop installed in starboard nacelle. Originally designated XC-46C but changed to XC-113.
CW-20H: Three aircraft equipped with R-3350 radials. Designated C-46L.
R5C-1: designation for 160 aircraft supplied to U.S. Marines, based on C-46A.
C-46D: Personnel version with extra cargo door on starboard side. 1,610 built.
C-46E: utility version with C-46A door configuration and stepped windscreen of XC-46B. 17 built.
C-46F: Cargo version with doors on both sides and square wingtips.
C-46G: Single example with stepped windscreen and square wingtips.
   
Sources:
The Complete Encyclodepia of World Aircraft, 1997, Barnes & Nobles Books, ISBN: 0 7607 0592 5