129.—(1) Every person in an aircraft must obey all lawful commands which the pilot-in-command or a member of the crew of that aircraft may give for the purpose of securing the safety of the aircraft and of the persons or property carried on board, or the safety, efficiency or regularity of air navigation.
(2) No person may operate on any aircraft any mobile or cell phone, computer or other electronic device that is designed to transmit or capable of transmitting electromagnetic energy otherwise than in accordance with the permission of the pilot-in-command of that aircraft.
(3) Paragraph (2) of this article does not apply to—
(a)hearing aids; or
(b)heart pacemakers; or
(c)portable voice recorders; or
(d)electric shavers; or
(e)electronic watches; and
(f)any other portable electronic device if the operator or pilot-in-command of the aircraft has determined that the said portable electronic device to be used will not cause interference with any aircraft system or equipment of the aircraft on which it is used.