Originally Posted by
mtofell
Federal law requires you to follow all crew member instructions (at least that's what I've heard..... at the beginning of every flight I've ever been on

).
I thought the law actually said follow instructions during the conduct of their normal duties. A FA couldn't order you to stand on your head and then have you arrested for disobeying. In this case, I think the root question would be whether telling pax to put their hands on their head was part of the FA's normal duties.
But ... I can't find the actual law offhand.