Operation of radio in aircraft
10.—(1)  A person must not operate a radio station in a relevant aircraft, whether or not the aircraft is in flight, unless —
(a)the person is duly licensed or otherwise permitted to operate the radio station under the law of the State of Registry or the State of the Operator; and
(b)the radio station is operated in accordance with the conditions of the radio station licence issued under the law of the State of Registry or the State of the Operator, as applicable.
(2)  When any relevant aircraft is in flight in circumstances that require the aircraft to be equipped with radio communication equipment, a person assigned duty as a flight crew member for the flight must keep a continuous radio watch by listening to the signals transmitted upon the frequency designated by a message received from the appropriate aeronautical radio station for use by that station.
(3)  Despite paragraph (2) —
(a)the radio watch may be discontinued, or continued on another frequency, for reasons of safety or to the extent that a message received from the appropriate aeronautical station permits; and
(b)the radio watch may be kept by a device installed in the aircraft if —
(i)the appropriate aeronautical radio station has been informed to that effect and has raised no objection; and
(ii)the aeronautical radio station is designated as being capable of transmitting a signal suitable for that purpose.
(4)  A person must not operate a radio station in any relevant aircraft in a way that causes interference which would impair the efficiency of aeronautical telecommunications or navigational services.
(5)  A person operating a radio station in a relevant aircraft may not make any emissions from the radio station unless —
(a)in accordance with general international aeronautical practice —
(i)the emissions are of the class and frequency in use in the airspace in which the aircraft is flying at the time of flight;
(ii)the emissions are messages and signals of distress, urgency or safety; or
(iii)the emissions are messages and signals relating to the flight of the aircraft; or
(b)the emissions are such public correspondence messages as may be permitted by or under the aircraft radio station licence mentioned in paragraph (1).