PART 80--STATIONS IN THE MARITIME SERVICES
Subpart G--Safety Watch Requirements and Procedures
Sec. 80.327 Urgency signals.
(a) The urgency signal indicates that the calling station has a very
urgent message to transmit concerning the safety of a ship, aircraft, or
other vehicle, or the safety of a person. The urgency signal must be
sent only on the authority of the master or person responsible for the
mobile station.
(b) In radiotelegraphy, the urgency signal consists of three
repetitions of the group XXX, sent with the individual letters of each
group, and the successive groups clearly separated from each other. It
must be transmitted before the call.
(c) In radiotelephony, the urgency signal consists of three oral
repetitions of the group of words PAN PAN transmitted before the call.
(d) The urgency signal has priority over all other communications
except distress. All mobile and land stations which hear it must not
interfere with the transmission of the message which follows the urgency
signal.
[51 FR 31213, Sept. 2, 1986, as amended at 52 FR 35245, Sept. 18, 1987]