Originally Posted by -IBLB-
Says who? He can fly no problem, as long as there is a qualified pilot on board in a control-seat.
Well, it depends on your country's rules. In Australia you are not allowed to "manipulate the controls of an aircraft in flight" unless you are the "pilot assigned for duty in the aircraft" or "a student pilot assigned for instruction in the aircraft."
Everyone seems to do it of course, but it's illegal here all the same.
Edit: Had a quick look through the FARs and couldn't find a similar regulation, so he's probably fine as far as that goes, still a waste of time and money though.