This Day in Aviation History.
March 2, 1949
B-50 completes first round the world nonstop flight.
The Boeing B-50 Superfortress was basically a post-World War II revision of the wartime B-29 Superfortress with new, more powerful (3,500-HP Pratt & Whitney R-4360-35) radial engines and numerous other improvements.
Boeing built 371 of these between 1947 and 1953, some serving until 1965. A reconnaissance variant, the RB-50B (a B-50B conversion) existed and played an important role in Cold War espionage. An aerial refueling tanker conversion designated KB-50 was used in the Vietnam War.
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