Goto Section: 80.326 | 80.329 | Table of Contents
Revised as of October 1, 2019
Goto Year:2018 |
§ 80.327 Urgency signals and messages.
(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
(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
(e) The urgency signal and call, and the message following it, must be
sent on one of the international distress frequencies. Stations which
cannot transmit on a distress frequency may use any other available
frequency on which attention might be attracted.
(f) Mobile stations which hear the urgency signal must continue to
listen for at least three minutes. At the end of this period, if no
urgency message has been heard, they may resume their normal service.
However, land and mobile stations which are in communication on
frequencies other than those used for the transmission of the urgency
signal and of the call which follows it may continue their normal work
without interruption provided the urgency message is not addressed “to
(g) When the urgency signal has been sent before transmitting a message
“to all stations” which calls for action by the stations receiving the
message, the station responsible for its transmission must cancel it as
soon as it knows that action is no longer necessary. This message of
cancellation must likewise be addressed “to all stations”.
[ 51 FR 31213 , Sept. 2, 1986, as amended at 52 FR 35245 , Sept. 18, 1987;
73 FR 4485 , Jan. 25, 2008]
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Goto Section: 80.326 | 80.329
Goto Year: 2018 |
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