Well done Hans, and thanks for giving the feedback on the solution, something so often not done.Best wishes,John

Hi All,Just to end this thread I thought it to be correct to post the solution to an additional problem which I only noticed now.I thought I had got this problem totally nailed because all my AI float planes were now landing etc. as they should but when "enjoying the sights" I noticed that no AIs were actually departing from their water parking positions but instead they just disappeared when their departure times came up. @$%+@%# !!My water runways were all specified as "water" and that was evidently the cause. So without changing anything else I specified them as "concrete" while keeping them at 1 foot high and 1 foot wide, which also kept them from being displayed on the water.Now EVERYTHING works as it should. Sorry for any inconveniances caused.RegardsHans