Reporting hazardous conditions
4.—(1) If any aircraft encounters hazardous conditions in the course of a flight, the commander of the aircraft shall send to the appropriate air traffic control unit, by the quickest means available to him, information containing such particulars of the hazardous conditions as may be pertinent to the safety of other aircraft.
(2) The information shall be sent immediately the aircraft encounters the hazardous conditions or as soon as it is possible to do so afterwards.