Marc Ramsey wrote:

Cellular telephones installed in or carried aboard airplanes, balloons or
any other type of aircraft must not be operated while such aircraft are
airborne (not touching the ground). When any aircraft leaves the ground, all
cellular telephones on board that aircraft must be turned off. "

Yes, except for the fact that the "cellphones" nearly all of us have
these days are actually licensed under Title 47 Part 24 "Personal
communications services". I've never been able to find a prohibition
against use of Part 24 phones in flight (aside from FAA restrictions on
"cellphone" use in commercial aircraft), can you?

I agree with Mark. The FCC told the FAA to prohibit the use of cellular
telephones (probably for a variety of reasons). However, strictly
speaking, modern digital phones are considered by the FCC to be "Personal
Communication Service" devices, *NOT* cellular phones. Although I've never
heard of any court cases, or even anyone from the FAA or FCC weighing in
on this, I believe that it is legal to operate a PCS phone in an airborne
aircraft (as long as the PIC permits it -- the FAA still prohibits the
operation of any electronic device without permission from the PIC, in
otherwords, don't try this on an airliner).

dan