New answers tagged


This is a partial answer (allowed) that I'm making a community wiki. Source: Google Ngram Viewer The usage above shows that the term base leg came after traffic pattern, which was confirmed in a Flying Magazine issue (Jun 1948, p. 64): That linked issue shows that the base leg was also known as the crosswind leg (which today is the leg after the first turn ...


It comes from the French base, referring to the bottom of a triangle or rectangle. If you view the circuit as a rectangle, the étape de base (the base leg) is the bottom step.

Top 50 recent answers are included