After the start of World War II, the Army ordered more than 1,500 Beech Model C18S aircraft and designated them UC-45F. The F model was similar to the earlier types but was configured with a seven place interior. The nose section was lengthened by five inches to allow the cockpit to be moved slightly forward. The Army eventually accepted 1,137 aircraft, ordered 42 completed as F-2B photo-reconnaissance aircraft and diverted 343 to the U.S. Navy (designated JRB-3 and JRB-4 in Navy service.)
After the end of WWII, some UC-45Fs were declared surplus and sold on the civilian market; however, many were rebuilt in the early 1950s and redesignated as C-45G or C-45H.
Beech Model B18S
8 seat improvement
Seven place version
TECHNICAL NOTES: Engines: Two Pratt & Whitney R-985-25 Wasp Junior radials of 450 hp each Maximum speed: 206 mph Cruising speed: 197 mph Range: 1,000 miles Service ceiling: 20,000 ft. Span: 47 ft. 8 in. Length: 34 ft. 8 in. Height: 9 ft. 2 in. Weight: 8,725 lbs. loaded weight Crew: One or two (pilot and co-pilot) Passenger capacity: Five or six Serial numbers: 43-35668 to 43-35945; 44-47049 to 44-47748; 44-86898 to 44-87441