a. Except as provided in paragraph (b) of this
section, no person may operate, nor may any operator or pilot in command of an
aircraft allow the operation of, any portable electronic device on any of the
following U.S.-registered civil aircraft: 1. Aircraft operated by a holder
of an air carrier operating certificate or an operating certificate; or 2.
Any other aircraft while it is operated under IFR [Instrument Flight Rules].
Paragragh (a) of this section does not apply to -- 1. Portable voice
recorders; 2. Hearing aids; 3. Heart pacemakers; 4. Electric
Shavers; or 5. Any other portable electronic device that the operator of the
aircraft has determined will not cause interference with the navigation or
communication system of the aircraft on which it is to be used. 3. In the
case of an aircraft operated by a holder of an air carrier operating certificate
or an operating certificate, the determination required by paragraph (b)(5) of
this section shall be made by that operator of the aircraft on which the
particular device is to be used. In the case of other aircraft, the
determination may be made by the pilot in command or other operator of the