Goto Section: 80.1129 | 80.1133 | Table of Contents
Revised as of September 1, 2021
Goto Year:2020 |
§ 80.1131 Transmissions of urgency communications.
(a) In a terrestrial system the announcement of the urgency message
must be made on one or more of the distress and safety calling
frequencies specified in § 80.1077 using digital selective calling and
the urgency call format. A separate announcement need not be made if
the urgency message is to be transmitted through the maritime
(b) The urgency signal and message must be transmitted on one or more
of the distress and safety traffic frequencies specified in § 80.1077,
or via the maritime mobile-satellite service or on other frequencies
used for this purpose.
(c) The urgency signal consists of the words PAN PAN. In radiotelephony
each word of the group must be pronounced as the French word “panne”.
(d) The urgency call format and the urgency signal indicate that the
calling station has a very urgent message to transmit concerning the
safety of a mobile unit or a person.
(e) In radiotelephony, the urgency message must be preceded by the
urgency signal, repeated three times, and the identification of the
(f) In narrow-band direct-printing, the urgency message must be
preceded by the urgency signal and the identification of the
(g) The urgency call format or urgency signal must be sent only on the
authority of the master or the person responsible for the mobile unit
carrying the mobile station or mobile earth station.
(h) The urgency call format or the urgency signal may be transmitted by
a land station or a coast earth station with the approval of the
(i) When an urgency message which calls for action by the stations
receiving the message has been transmitted, the station responsible for
its transmission must cancel it as soon as it knows that action is no
(j) Error correction techniques, in accordance with ITU-R M.625-3
(incorporated by reference, see § 80.7), as specified in § 80.1101, must
be used for urgency messages by direct-printing telegraphy. All
messages must be preceded by at least one carriage return, a line feed
signal, a letter shift signal, and the urgency signal PAN PAN.
(k) Urgency communications by direct-printing telegraphy should be in
the ARQ mode when communicating directly to the Coast Guard or other
coast stations on channels which they normally guard. Other distress
communications, including those on simplex channels provided for that
purpose, should be in the broadcast forward error correction mode. The
ARQ mode may subsequently be used when it is advantageous to do so.
[ 57 FR 9065 , Mar. 16, 1992, as amended at 68 FR 46981 , Aug. 7, 2003; 76 FR 67618 , Nov. 2, 2011]
Goto Section: 80.1129 | 80.1133
Goto Year: 2020 |
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