A question I have always wondered :-
If you are heading west, what speed would you have to be travelling at to have the earth rotate beneath you whilst you remained stationary relative to the moving earth. Basically you take off and climb, then the earth rotates around beneath you until your destination arrives, then you decend and land.
Not sure I made that sound too clear but it's just one of those "always wondered" questions I have had and the ATPL notes don't really cover it.
