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Posted 6/24/2009 Printable Fact Sheet
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Lockheed C-40A
Lockheed C-40A 3/4 front view (S/N 38-547). (U.S Air Force photo)
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After the initial evaluation of the Lockheed Model 12, the Air Corps ordered ten additional production Electra Juniors in the fall of 1938. The planes were delivered in the first quarter of 1939 and were designated C-40A.

The C-40A was externally identical to the C-40, but featured a hybrid passenger/cargo interior. In the original configuration, the C-40A carried a crew of two, up to three passengers and a light cargo load of about 1,000 pounds maximum. The gross weight of the C-40A was about 400 pounds higher than the C-40 and was slightly faster also. During operational service, the C-40A interior was often configured in the field depending on the specific mission. In most respects, the C-40 and C-40As were indistinguishable from each other.

During 1939 and early 1940s, most C-40As were assigned directly to operational groups and squadrons for use in support, liaison, transport and light cargo carrying missions. These "squadron hacks" were replaced by newer aircraft in the mid-World War II era. Most C-40As were declared surplus by mid-1943 and many were sold to foreign air forces.

Type Number built/
C-40 3 Model 12 Electra Junior
C-40A 10 Production C-40
C-40B 1 Tricycle landing gear testbed
C-40C 0 Designation not used
UC-40D 11 Impressed Electra Juniors

Engines: Two Pratt & Whitney R-985-17 radials of 450 hp each
Maximum speed: 220 mph
Cruising speed: 210 mph
Range: 800 miles
Service ceiling: 22,900 ft.
Span: 49 ft. 6 in.
Length: 36 ft. 4 in.
Height: 9 ft. 9 in.
Weight: 9,600 lbs. maximum gross weight
Crew: Two (pilot and co-pilot)
Passenger capacity: Three
Serial numbers: C-40: 38-536 to 38-538; C-40A: 38-539 to 38-548; C-40B: 38-582; UC-40D: 42-22249, 42-38280, 42-38346 to 42-38352, 42-57504, 42-66386

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