JOURFIXE

The Boeing B-50 Superfortress was a post-World War II revision of the wartime United States B-29 Superfortress with larger Pratt & Whitney R-4360 radial engines, a taller vertical stabilizer, and other improvements.

Lucky Lady II is a United States Air Force B-50 Superfortress that became the first airplane to circle the world nonstop, when it made the journey in 1949, assisted by refueling the plane in flight. As of 2009[update] it is one of only four B-50 Superfortresses still in existence.

A basic definition of a world circumnavigation would be a route which covers at least a great circle, and in particular one which passes through at least one pair of points antipodal to each other. In practice, different definitions of world circumnavigation are used, in order to accommodate practical constraints depending on the method of travel....
For powered aviation, the course of a round-the-world record must start and finish at the same point and cross all meridians; the course must be at least 36,787.559 kilometres (22,858.729 mi) long (which is the length of the Tropic of Cancer). The course must include set control points at latitudes outside the Arctic and Antarctic circles.