47 CFR § 2.405 - Operation during emergency.
The licensee of any station (except amateur, standard broadcast, FM broadcast, noncommercial educational FM broadcast, or television broadcast) may, during a period of emergency in which normal communication facilities are disrupted as a result of hurricane, flood, earthquake, or similar disaster, utilize such station for emergency communication service in communicating in a manner other than that specified in the instrument of authorization: Provided:
(a) That as soon as possible after the beginning of such emergency use, notice be sent to the Public Safety and Homeland Security Bureau of the Commission at Washington, D.C., stating the nature of the emergency and the use to which the station is being put, and
(b) That the emergency use of the station shall be discontinued as soon as substantially normal communication facilities are again available, and
(c) That the Public Safety and Homeland Security Bureau of the Commission at Washington, D.C., shall be notified immediately when such special use of the station is terminated: Provided further,
(d) That in no event shall any station engage in emergency transmission on frequencies other than, or with power in excess of, that specified in the instrument of authorization or as otherwise expressly provided by the Commission, or by law: And provided further,
(e) That any such emergency communication undertaken under this section shall terminate upon order of the Commission.
Part 73 of this chapter contains provisions governing emergency operation of standard, FM, noncommercial educational FM, and television broadcast stations. Part 97 of this chapter contains such provisions for amateur stations.