§  22.925   Prohibition on airborne operation of cellular telephones.

   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. The following notice must be posted on or near each cellular
   telephone installed in any aircraft:

   "The use of cellular telephones while this aircraft is airborne is
   prohibited by FCC rules, and the violation of this rule could result in
   suspension of service and/or a fine. The use of cellular telephones
   while this aircraft is on the ground is subject to FAA regulations."

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