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Posted 6/25/2009 Printable Fact Sheet
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Boeing B-17B
Boeing B-17B. (U.S. Air Force photo)
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The Boeing B-17B was an improved version of the B-17A. The major changes in the B model included a larger rudder, a larger set of flaps and a redesigned nose. The nose-mounted turret was replaced by a Plexiglas nose making the B-17B about seven inches shorter than the A. The Army Air Corps ordered 39 B-17Bs in 1938-1939.

In October 1942 the B-17Bs were redesignated as RB-17B (R for restricted). These aircraft were used for non-combat training, transport, messenger and liaison duties.

Type Number built/
B-17B 39 Improved B-17A

Note: Boeing Model 299M; became RB-17B in October 1942.

Armament: One .30-cal. and six .50-cal.) machine guns and four 1,100-lb. bombs
Engines: Four Wright R-1820-51 turbo-supercharged radials of 1,000 hp each
Maximum speed: 292 mph at 25,000 ft.
Cruising speed: 181 mph
Service ceiling: 36,000 ft.
Range: 3,600 miles (maximum ferry range)
Span: 103 ft. 9 in.
Length: 67 ft. 11 in.
Height: 15 ft. 0 in.
Weight: 38,000 lbs. design gross weight
Serial numbers: 38-211 to 223; 38-258 to 38-270; 38-583 to 38-584; 38-610; 39-1 to 39-10 

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