The TB-47B was a conversion of the standard B-47B as a transition
trainer for pilots and navigators. It was basically similar to the
B-47B but had a fourth crew position added for an instructor. All armament and
ECM equipment was removed. 48
B-47Bs were modified to TB-47B configuration at Douglas-Tulsa, and 18
were modified by the USAF at Oklahoma City
Sources:
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American Combat Planes, Third Enlarged Edition, Ray Wagner, Doubleday,
1982.
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Post World War II Bombers, Marcelle Size Knaack, Office of Air Force
History, 1988.
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The Boeing B-47, Peter Bowers, Aircraft in Profile, Doubleday, 1968.
-
Boeing Aircraft Since 1916, Peter M. Bowers, Naval Institute Press,
1989.
-
United States Military Aircraft Since 1909, Gordon Swanborough and
Peter M. Bowers, Smithsonian, 1989.
-
Boeing B-47 Stratojet--Variant Briefing. Bill Yenne, International Air Power Review, Vol 6, 2002.