Maybe some aviation experts out there can help me with this question. When a plane experiences turbulence, how dangerous is it? The plane feels as though it is dropping. How many feet does the plane drop in mild to medium turbulence? ALSO---on a scale from 1 to 10 (with 10 being the most difficult), how difficult is the average landing of a commercial airliner? These are some questions I've always had, but have never been able to ask a pilot.