 | Law:no - Rule:yes The general principal in science is that the defacto state is non-existence.
Without some sort of tangible evidence that cellular rf causes an unacceptable risk to aircraft safety, the government is *supposed* to stay out of it.
They have no more right to ban cellular use by aircraft passengers than they do banning smoking outdoors.
On the other hand, the airlines do have the right to require passengers refrain from many perfectly legal behaviors that are detrimental to the flight experience of fellow passengers.
If cell phones in flight were allowed by airline X, I would choose airline Y.
Otoh, a federal ban does relieve me of the obligation to answer my phone in flight. |