Cross country definition is a departure at point A, and landing at point B...
However
When obtaining experience for PPL, CPL, IR or ATP prerequisites, it is understood that cross country is that points A and B are separated by a distance in excess of 50 NM. Any problem for you...?
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I dont have the US FAA regulations at hand, but it should be listed and specified in FAR 1 (Definitions and Abbreviations) and FAR 61 (Certification of Pilots and Flight Instructors).
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Happy contrails