Section 97.403 states that no provision of the Rules prevents the use by an amateur station of any means of radiocommunication at its disposal to provide essential communications in connection with the immediate safety of human life and immediate protection of property when normal communication systems are not available.

Section 97.405 states that no provision of the Rules prevents the use by an amateur station in distress of any means at its disposal to attract attention, make known its condition and location, and obtain assistance. A sinking ship is a good example. It further states that no provision of the Rules prevents the use by a station, in that exceptional circumstance, of any means of radiocommunications at its disposal to assist a station in distress.