Re: ARLA/CLUSTER: Socorro Urgência e Segurança
José Luís Proença
ct1gzb gmail.com
Segunda-Feira, 23 de Outubro de 2017 - 15:11:29 WEST
Boa partilha, obrigado.
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Sem
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73 de José LuÃs Proença, Operador do Posto Emissor CT1GZB
ARVM #53, REP #1418, SKCC #8178, CT-QRP #058, NRA PN#077, ARRLx #054, GPCW
#007
http://ct1gzb.blogspot.com
2017-10-22 1:35 GMT+01:00 Gmt <ct1czt gmail.com>:
> Para quem nunca conheceu e tenha curiosidade de conhecer, eis aqui aquilo
> que é (era) o procedimento Internacional de Socorro, Urgência e Segurança.
>
>
> *INTERNATIONAL DISTRESS PROCEDURES *
>
> *Applicability*
>
> The procedures in this Chapter are in accordance with ITU radio
> regulations and are obligatory in the Maritime Mobile Service and for
> communications between aircraft stations and stations of the Maritime
> Mobile Service.
>
>
>
> *Authority*
>
> The distress call and message shall be sent only on the authority of the
> master or person responsible for the ship, aircraft or any other vehicle
> carrying the mobile station.
>
>
>
> *Distress Procedure*
>
> Distress procedure comprises all communications relating to the immediate
> assistance required by the mobile station in distress. Distress procedure
> consists of:
>
>
>
> *a. In CW:*
>
> (1) The alarm signal; followed in order by:
>
> (2) The distress call and an interval of two minutes;
>
> (3) The distress call;
>
> (4) The distress message;
>
> (5) Two dashes of ten to fifteen seconds duration each;
>
> (6) The call sign of the Station in distress.
>
>
>
> *b. In voice:*
>
> (1) The alarm signal (whenever possible) followed by;
>
> (2) The distress call;
>
> (3) The distress message.
>
>
>
> *c. In RATT/NBDP:*
>
> (1) The distress call;
>
> (2) The distress message.
>
> When time is vital, the second step of the CW procedure (or even the first
> and second steps) may be omitted or shortened. These two steps of the
> distress procedure may also be omitted in circumstances where transmission
> of the alarm signal is considered unnecessary.
>
>
>
> *Distress Signal*
>
> The distress signal consists of:
>
> a. In CW - the group SOS, transmitted as a single signal in which the
> dashes are emphasised so as to be clearly distinguished from the dots.
>
> b. In voice - the word MAYDAY, pronounced as the French expression
> “m’aiderâ€.
>
> c. In RATT - the signal SOS is to be typed.
>
>
>
> *Alarm Signal*
>
> The alarm signal consists of:
>
> 1. In CW - A serious of 12 dashes sent in one minute, the duration of
> each dash being four seconds with an interval of one second between each
> dash.
> 2. In voice - Two substantially sinusoidal audio frequency tones
> transmitted alternatively. One tone has a frequency of 2200 Hz and the
> other 1300 Hz. The duration of each tone is 250 milliseconds. The signal is
> to be sent continuously for a period of from 30 seconds to one minute.
>
> The purpose of the alarm signal is to alert the operators on watch or to
> activate 2182khz watchkeeping receivers to warn operators that a distress
> call or message is to follow.
>
>
>
> *Note:* With the introduction of GMDSS, Digital Selective Calling (DSC)
> entered service. DSC is a paging technique used to automate the initial
> call between two stations. It operates on MF, HF and VHF marine bands for
> distress, urgency and safety alerting.
>
>
>
> *Distress Call*
>
> The distress call consists of:
>
> *a. In CW:*
>
> (1) The distress signal SOS, sent three times.
>
> (2) The prosign DE.
>
> (3) The call sign of the mobile station in distress sent three times.
>
>
>
> *b. In voice:*
>
> (1) The distress signal MAYDAY, spoken three times.
>
> (2) The proword THIS IS.
>
> (3) The call sign or other identification of the mobile station in
> distress, spoken three times.
>
> *c. In RATT/NDPB:*
>
> (1) The distress signal SOS, typed three times.
>
> (2) The prosign DE.
>
> (3) The call sign of the mobile station in distress sent three times.
>
> The distress call shall not be addressed to a particular station and
> acknowledgement of receipt shall not be given before the distress message
> which follows it is sent.
>
>
>
> *Distress Message*
>
> The distress message shall consist of:
>
> 1. The distress signal SOS, or MAYDAY as appropriate.
> 2. The name, or other identification, of the mobile station in
> distress.
> 3. Particulars of its position.
> 4. The nature of the distress and the kind of assistance desired.
> 5. Any other information which might facilitate the rescue The
> distress message, preceded by the distress call (and the alarm signal if
> necessary), shall be repeated at intervals, until an answer is received.
> The intervals shall, however, be sufficiently long for stations preparing
> to reply to start their sending apparatus.
>
>
>
> *Aircraft Distress Message*
>
> Aircraft distress procedures are detailed in chapter 3. Under normal
> circumstances an aircraft distress message will be transmitted on the
> Aeronautical Mobile Service frequency in use, however, an aircraft
> transmitting in the Maritime Mobile Service shall as a general rule, and if
> time permits, include in its distress message the following information:
>
> 1. Estimated position and time of estimate.
> 2. Heading in degrees (state whether magnetic or true).
> 3. Indicated air speed.
> 4. Altitude.
> 5. Type of aircraft.
> 6. Nature of distress and type of assistance required.
> 7. Any other information which might facilitate the rescue (including
> the intention of the person in command, such as forced alighting on the sea
> or crash landing).
>
>
>
> *Position*
>
> As a general rule, a ship signals its position in latitude and longitude,
> with the numerals suffixed by NORTH or SOUTH, and EAST or WEST. In CW the
> prosign AAA is used to separate the degrees from the minutes. When known,
> the true bearing and the distance (in nautical miles) from a known
> geographical point may be given.
>
>
>
> *Distress Frequency*
>
> 1. 500 kHz. The frequency 500 kHz is the International Distress
> Frequency for CW. The distress message, preceded by the distress call, must
> be repeated at intervals on this frequency, especially during the periods
> of silence. The periods of silence in all ITU regions have a duration of
> three minutes, commencing at 15 and 45 minutes past each hour.
>
> *Note*: With effect from 1 February 1992, monitoring of 500 kHz is no
> longer required.
>
>
>
> 1. 2182 kHz. The frequency 2182 kHz (and its supplementary frequencies
> 4125 and 6215 kHz) is the International Distress frequency for voice. The
> silence periods for this frequency in ITU regions 1 and 3 have a duration
> of three minutes commencing on the hour and half hour.
>
> *Note:* Although in ITU region 2, Canadian coast stations observe the
> above silence periods.
>
>
>
> 1. 156.8 MHz. The frequency 156.8 MHz is the International Distress,
> Safety and Calling frequency for the maritime mobile VHF radiotelephone
> service. To facilitate the receptions of distress calls all transmissions
> on 156.8 MHz shall be kept to a minimum and shall not exceed one minute.
>
>
>
> 1. When the mobile station in distress receives no answer to a
> distress message sent on a distress frequency, the message may be repeated
> on any other available frequency on which attention might be attracted. If
> time permits, the mobile station should transmit an appropriate phrase or
> operating signal (Q signal) before shifting frequency.
>
>
>
> *Direction Finding*
>
> 1. In CW, to permit direction-finding stations to determine the
> position of the station in distress, the transmission of two 10 to 15
> seconds dashes followed by the station call sign may be repeated at
> frequent intervals if necessary.
>
>
>
> 1. Immediately before a crash landing or a forced landing (on land or
> sea) of an aircraft, as well as before total abandonment of a ship or an
> aircraft, the radio equipment should be set for continuous emission.
>
>
>
> *Receipt of Distress*
>
> Stations of the mobile service which receive a distress message which is,
> beyond any possible doubt, in their vicinity, shall obtain the approval of
> the local commander before acknowledging receipt, wherever practicable.
> However, in areas where reliable communications with one more coast
> stations are practicable, mobile stations should defer this acknowledgement
> for a short time so that a land or coast station may acknowledge receipt.
>
> The acknowledgement of receipt of a distress message shall be given in the
> following format:
>
> *a. In CW:*
>
> (1) The distress signal SOS.
>
> (2) The call sign of the station sending the distress message, sent three
> times.
>
> (3) The prosign DE.
>
> (4) The call sign of the station acknowledging receipt, sent three times.
>
> (5) The group RRR.
>
> (6) The distress signal SOS.
>
>
>
> *b. In voice:*
>
> (1) The distress signal MAYDAY.
>
> (2) The call sign or other identification of the station sending the
> distress message, spoken three times.
>
> (3) The proword THIS IS.
>
> (4) The call sign or other identification of the station acknowledgement
> receipt, spoken three times.
>
> (5) The word RECEIVED (or RRR spoken as ROMEO in case of language
> difficulties).
>
> (6) The distress signal MAYDAY.
>
>
>
> *c. In RATT/NBDP:*
>
> (1) The distress signal SOS.
>
> (2) The call sign of the station sending the distress message, sent three
> times.
>
> (3) The prosign DE.
>
> (4) The call sign of the station acknowledging receipt, sent three times.
>
> (5) The group RRR.
>
> (6) The distress signal SOS.
>
>
>
> Stations of the mobile service which receive a distress message from a
> mobile station which, beyond any possible doubt, is not in their vicinity,
> shall allow a short interval of time to elapse before acknowledging receipt
> of the message in order to permit stations nearer to the station in
> distress to acknowledge receipt without interference.
>
> However, stations which received a distress message from mobile station
> which, beyond any possible doubt, is a long distance away need not
> acknowledge receipt (see paragraph 218).
>
>
>
>
>
> *Control of Distress Traffic*
>
> The control of distress traffic is the responsibility of the mobile
> station in distress or the station originating or relaying the distress
> message, on behalf of the station in distress. These stations may, however,
> delegate control to another station.
>
>
>
> *Silence*
>
> The station in distress or the station controlling distress traffic may
> impose silence either on all stations of the mobile service in the area or
> on any station which interferes with the distress traffic. It shall address
> these instructions "to all Stations" (CQ) or to one station only, according
> to the circumstances. In either case the form of the signal will be:
>
> 1. By CW - The signal QRT SOS.
> 2. By voice - The words SEELONCE MAYDAY.
> 3. By RATT/NBDP - The signal QRT SOS.
>
>
>
> *Silence Imposed by Mobile Station Near the Distress*
>
> If it is believed to be essential, any station on the mobile service near
> the ship, aircraft or other vehicle in distress may also impose silence. In
> this case the distress signal is substituted by the word DISTRESS followed
> by imposing station's call sign as follows:
>
> 1. In CW - QRT DISTRESS followed by the transmitting station's call
> sign.
> 2. In voice - SEELONCE DISTRESS followed by the transmitting station's
> call sign.
> 3. In RATT/NBDP - QRT DISTRESS followed by the transmitting station's
> call sign.
>
>
>
> *Station Monitoring Distress Traffic*
>
> Any station of the mobile service which has knowledge of distress traffic
> and which cannot itself assist the station in distress shall continue to
> follow such traffic until it is evident that assistance is being provided.
> Until they receive a message indicating that normal working may be resumed
> all stations which are aware of the distress traffic, and which are not
> taking part in it, are forbidden to transmit on the frequencies on which
> the distress traffic is being passed.
>
>
>
> *Follow-up Message*
>
> Every mobile station which acknowledges receipt of a distress message
> must, on the order of the person in command, transmit as soon as possible
> the following information in the order shown:
>
> 1. Its identification.
> 2. Its position.
> 3. The speed at which it is proceeding towards, and the approximate
> time it will take to reach, the mobile station in distress.
> 4. If the position of the station in distress appears doubtful, the
> true bearing of that station preceded by the operating signal QTE.
>
>
>
> Before transmitting this message, the station shall ensure that it will
> not interfere with the emissions of other stations better situated to
> render immediate assistance to the station in distress.
>
>
>
> *Action by Station not itself in Distress*
>
> A mobile station or land station which learns that a mobile station is in
> distress shall transmit a distress message in any of the following cases:
>
> 1. When that station in distress is not itself in a position to send a
> distress message.
> 2. When the master or person responsible for the ship, aircraft or
> other vehicle not in distress, considers that further help is necessary.
> 3. When, although not in a position to render assistance, it has heard
> a distress message which has not been acknowledged.
>
>
>
> The transmission of a distress message under these conditions shall be
> made on one or more of the international distress frequencies (500 kHz
> (AM), 2182 kHz (USB), 156.8 MHz (FM), or on any other frequency that may be
> used in case of distress. The station transmitting the message shall take
> all necessary steps to notify the authorities who may be able to render
> assistance.
>
>
>
> *Relayed Distress Message*
>
> The relayed distress message shall be preceded wherever possible by the
> alarm signal.
>
> In addition, the transmission of the distress message will always be
> preceded by the following call:
>
> *a. In CW:*
>
> (1) The signal DDD SOS SOS SOS DDD;
>
> (2) The prosign DE.
>
> (3) The call sign of the transmitting station, sent three times.
>
>
>
> *b. In voice:*
>
> (1) The signal MAYDAY RELAY spoken three times;
>
> (2) The proword THIS IS.
>
> (3) The call sign or other identification of the transmitting station
> spoken three times.
>
>
>
> *c. In RATT/NBDP:*
>
> (1) The signal DDD SOS SOS SOS DDD;
>
> (2) The prosign DE.
>
> (3) The call sign of the transmitting station, sent three times.
>
>
>
> *Cessation of Distress Traffic*
>
> When distress traffic has ceased on a frequency which has been used for
> distress traffic, the station which has controlled this traffic shall
> transmit on that frequency a message addressed "to all stations" (CQ)
> indicating that normal working may be resumed. This message consists of:
>
> a*. In CW*:
>
> (1) The distress signal SOS.
>
> (2) The call "to all stations" (CQ), sent three times.
>
> (3) The prosign DE.
>
> (4) The call sign of the station sending the message.
>
> (5) The time of handing in the message.
>
> (6) The name and call sign of the mobile station which was in distress.
>
> (7) The operating signal QUM ("normal working may be resumed").
>
> (8) The prosign AR.
>
>
>
> *b. In voice:*
>
> (1) The distress signal MAYDAY.
>
> (2) The call "HELLO ALL STATIONS" or CQ (SPOKEN AS CHARLIE QUEBEC) spoken
> three times.
>
> (3) The proword THIS IS.
>
> (4) The call sign or other identification of the station sending the
> message.
>
> (5) The time of handing in of the message.
>
> (6) The name and call sign of the station which was in distress.
>
> (7) The words SEELONCE FEENEE.
>
> (8) The proword OUT.
>
>
>
> *c. In RATT/NBDP:*
>
> (1) The distress signal SOS.
>
> (2) The call "to all stations" (CQ), sent three times.
>
> (3) The prosign DE.
>
> (4) The call sign of the station sending the message.
>
> (5) The time of handing in the message.
>
> (6) The name and call sign of the mobile station which was in distress.
>
> (7) The operating signal QUM ("normal working may be resumed").
>
> (8) The prosign AR.
>
> When a station in distress has delegated control of distress working to
> another station, the person in charge of the station in distress should,
> when he considers silence no longer justified, immediately inform the
> controlling station, who will act in accordance with the above.
>
>
>
>
>
> *Cessation of Silence*
>
> When complete silence is no longer necessary on a frequency which is being
> used for distress traffic, the station controlling the traffic shall
> transmit on that frequency a message addressed "to all stations" (CQ)
> indicating that restricted working may be resumed. This message has the
> same format as detailed in para 220 with the Operating Signal QUZ replacing
> QUM or the words PRU-DONCE (pronounced as the French word "prudence")
> replacing SEELANCE FEENEE in the CW and VOICE messages respectively.
>
>
>
> *AIRCRAFT DISTRESS PROCEDURES*
>
> *Applicability*
>
> The procedures detailed in Chapter 2 are generally applicable to aircraft
> in distress and shall be employed in communications between aircraft
> stations and stations in the maritime mobile service. However, the
> following procedures will normally be employed by stations within the
> aeronautical mobile service, and will be used by aircraft operating on
> military communications network.
>
>
>
> *Action by Aircraft in Distress*
>
> An aircraft commander should have no hesitation in declaring a state of
> distress if there is any indication that such exists. As soon as distress
> conditions arise, all installed automatic emergency equipment (e.g. IFF
> etc.) should be switched on. When the distress conditions cease to exist, a
> message is to be sent cancelling the distress condition.
>
>
>
> *Distress Signal*
>
> The distress signal shall be used at the commencement of the first
> distress communication. It shall also be used, if it is considered
> necessary, at the commencement of any subsequent distress communication.
>
>
>
> *Distress Message*
>
> In addition to being preceded by the distress call (SOS or MAYDAY,
> depending on the mode of communication), preferably transmitted three
> times, the distress message sent by an aircraft in distress should:
>
> 1. Be on the air-ground frequency in use at the time.
> 2. Consist of as many as possible of the following elements, in the
> following order:
>
> (1) Position and time
>
> (2) Heading
>
> (3) Air speed
>
> (4) Altitude
>
> (5) Aircraft type
>
> (6) Nature of distress
>
> (7) Captain's intentions
>
> (8) Any other information that may facilitate rescue
>
> 1. ICAO distress message should consist of as many as possible of the
> following elements, in the following order:
>
> (1) Nature of Distress
>
> (2) Captains Intentions
>
> (3) Position
>
> (4) Heading
>
> (5) Altitude
>
> (6) Any other information that may facilitate rescue
>
>
>
> *Distress Message*
>
> The provision above are not intended to prevent:
>
> 1. The distress message of an aircraft in distress being made on
> another aeronautical mobile frequency, if considered necessary or
> desirable. In many areas, a continuous watch by aeronautical stations is
> maintained on 121.5 MHz and/or 243MHz.
> 2. The distress message of an aircraft in distress being broadcast, if
> time and circumstances make this course preferable.
> 3. The aircraft transmitting on the maritime mobile international
> distress frequencies.
> 4. The aircraft using any means at its disposal to attract attention
> and make known its condition (including the activation of the appropriate
> IFF mode and code).
> 5. Any station taking any means at its disposal to assist an aircraft
> in distress.
> 6. Any variation of the elements of the distress message when the
> transmitting station is not itself in distress, provided that such
> situation is clearly stated in the distress message.
>
>
>
>
>
> *Action by Station Addressed*
>
> The station addressed by the station in distress, or the first station
> acknowledging the distress message
>
> shall:
>
> 1. Immediately acknowledge the distress message.
>
>
> 1. Take control of the communications, or specifically and clearly
> transfer that responsibility, advising the aircraft if a transfer is made.
> 2. Take immediate action to ensure that all necessary information is
> made available as soon as possible to:
>
> (1) The Air Traffic Service (ATS) unit concerned.
>
> (2) The aircraft operating agency concerned, or its representative,
> in accordance with pre-established arrangements. (This requirement does not
> have priority over any other action which involves the safety of the flight
> in distress, or of any other flight in the area, or which might affect the
> progress of the expected flights in the area.)
>
> 1. Warn other stations as appropriate, in order to prevent the
> transfer of traffic to the frequency of the distress communication.
>
>
>
> *Imposition of Silence*
>
> The station in distress, or the station in control of the distress
> traffic, may impose silence, either on all stations of the mobile service
> in the area or on any station which interferes with the distress traffic.
> It shall address these instructions "to all stations" or to one station
> only, according to circumstances. In either case the form of the signal
> will be:
>
> 1. By CW - QRT SOS
> 2. By voice - STOP TRANSMITTING - MAYDAY
> 3. By RATT - QRT SOS
>
> The use of these signals is reserved for the aircraft station in distress
> and for the station controlling the distress traffic.
>
>
>
> *Action by all Other Stations*
>
> Distress communications have absolute priority over all other
> communications, and a station aware of them shall not transmit on the
> frequency concerned, unless:
>
> 1. The distress is cancelled or the distress traffic is terminated.
> 2. All distress traffic is transferred to other frequencies.
> 3. It had itself to render assistance.
>
> Any station which has knowledge of distress traffic, shall nevertheless
> continue listening to such traffic until it is obvious that assistance is
> being provided.
>
>
>
> *Termination of Distress*
>
> When an aircraft is no longer in distress, it shall transmit a message
> cancelling the distress condition.
>
> When the station which has controlled the distress communication traffic
> becomes aware that the distress condition is ended, it shall take immediate
> action to ensure that this information is made available, as soon as
> possible, to:
>
> 1. The ATS unit concerned.
> 2. The aircraft operating agency concerned, or its representative, in
> accordance with preestablished arrangements.
>
>
>
> *Termination of Silence*
>
> The distress communication and silence condition shall be terminated by
> transmitting a message, on the frequency or frequencies being used for
> distress traffic. This message shall be transmitted in the shown format.
>
> This message shall be originated only by the station controlling the
> communications when, after reception of the message cancelling the distress
> condition, it is authorised to do so by the appropriate authority
>
>
>
> *Acknowledging Receipt of a Distress Message*
>
> *RATT CW VOICE*
>
> 1. Distress Signal SOS (if considered necessary)
>
> 1. Distress Signal SOS (if considered necessary)
>
> 1. Distress Signal MAYDAY (if considered necessary)
>
> 2. Call sign of station sending message sent three times
>
> 2. Call sign of station sending distress messages sent three times
>
> 2. Call sign or other identification of station in distress - spoken three
> times
>
> 3. The prosign DE 3. The prosign DE 3. The proword THIS IS
>
> 4. The call sign of station acknowledging receipt - sent three times
>
> 4. The call sign of station acknowledging receipt - sent three times
>
> 4. The call sign or other identification of station acknowledging receipt
> - three times
>
> 5. The group RRR 5. The group RRR 5. The word ROGER
>
> 6. The distress signal SOS 6. The distress signal SOS 6. The distress
> signal MAYDAY
>
> 7. The prosign AR 7. The prosign AR 7. The proword OUT
>
>
>
> *Message Format for Cessation of Distress Traffic*
>
> *RATT CW VOICE*
>
> 1. Distress signal SOS (if considered necessary)
>
> 1. Distress signal MAYDAY (if considered necessary)
>
> 2. Call CQ 2. Call CQ ("to all stations") 2. The call HELLO ALL STATIONS
> three times
>
> 3. Prosign DE 3. Prosign DE 3. Proword THIS IS
>
> 4. Call sign of station sending message (once) 4. Call sign of station
> sending message (once) 4. Identification of station transmitting message
> (once)
>
> 5. Time of handing in of message 5. Time of handing in of message 5. Time
> of handing in of message
>
> 6. Identification and call sign of station which was in distress
>
> 6. Identification and call sign of station which was in distress
>
> 6. Identification and call sign of station which was in distress
>
> 7. Operating signal QUM 7. Operating signal QUM (Normal working may be
> resumed).
>
> 7. The words DISTRESS TRAFFIC ENDED
>
> 8. The prosign AR 8. The prosign AR 8. The proword OUT
>
>
>
> *Examples of Aircraft Distress Traffic*
>
> *Traffic RATT CW VOICE*
>
> Distress Call SOS SOS SOS DE PQ6F PQ6F PQ6F AR
>
> SOS SOS SOS DE PQ6F PQ6F PQ6F AR
>
> MAYDAY MAYDAY MAYDAY THIS IS SOLENT ONE SIX SOLENT ONE SIX SOLENT ONE SIX
> OUT
>
> Distress Message SOS SOS SOS DE PQ6F PQ6F PQ6F QTH 15 NM SE DOVER 1212Z
> QTL 270 QTJ 200 QAH 8000 FT B-29 ENGINE FAILURE DITCHING PQ6F K
>
> SOS SOS SOS DE PQ6F PQ6F PQ6F QTH 15 NM SE DOVER 1212Z QTL 270 QTJ 200 QAH
> 8000 FT B-29 ENGINE FAILURE DITCHING PQ6F K
>
> MAYDAY MAYDAY MAYDAY THIS IS SOLENT ONE SIX SOLENT ONE SIX SOLENT ONE SIX
> – POSITION ONE FIVE NAUTICAL MILES SOUTH EAST DOVER ONE TWO ONE TWO ZULU
> HOURS – HEADING (stating whether magnetic or true) TWO SEVEN ZERO
> -INDICATED AIR SPEED TWO HUNDRED KNOTS - EIGHT THOUSAND FEET - BRAVO TWO
> NINE - ENGINE FAILURE - DITCHING - SOLENT ONE SIX OVER
>
>
>
> *Relay Distress Message*
>
> DDD SOS SOS SOS DDD AFA3 DE RY7Z BT PQ6F ENGINE FAILURE DITCHING QTH 3821N
> 07345W QAH 16000 QTL 260 BT K
>
> DDD SOS SOS SOS DDD AFA3 DE RY7Z BT PQ6F ENGINE FAILURE DITCHING QTH 3821N
> 07345W QAH 16000 QTL 260 BT K
>
> MAYDAY RELAY MAYDAY RELAY MAYDAY RELAY ANDREWS THIS IS FIREBRAND TWO
> ZEROBREAK SOLENT ONE SIX ENGINE FAILURE DITCHING POSITION THREE EIGHT TWO
> ONE NORTH ZERO SEVEN THREE FOUR FIVE WEST FLIGHT LEVEL ONE SIX ZERO HEADING
> TWO SIX ZERO OVER
>
>
>
> *Acknowledgement of Distress Message*
>
> (SOS) PQ6F DE AFA3 RRR SOS AR
>
> (SOS) PQ6F DE AFA3 RRR SOS AR
>
> (MAYDAY) SOLENT ONE SIX THIS IS ANDREWS ANDREWS ROGER MAYDAY OUT (The word
> RECEIVED is prescribed for maritime mobile service vice ROGER)
>
> Imposing Silence (SOS) CQ CQ CQ DE AFA3 QRT SOS AR
>
> (SOS) CQ CQ CQ DE AFA3 QRT SOS AR
>
> (MAYDAY) ALL STATIONS ALL STATIONS ALL STATIONS THIS IS ANDREWS STOP
> TRANSMITTING - MAYDAY OUT
>
>
>
> *Cancellation of Distress*
>
> (SOS) AFA3 DE PQ6F QTA DISTRESS ENGINES OPERATING QRF BASE K
>
> (SOS) AFA3 DE PQ6F QTA DISTRESS ENGINES OPERATING QRF BASE K
>
> (MAYDAY) ANDREWS THIS IS SOLENT ONE SIX CANCEL DISTRESS ENGINES OPERATING
> AM RETURNING BASE OVER
>
>
>
> *Terminating Silence*
>
> (SOS) CQ CQ CQ DE AFA3 1421Z PQ6F QUM AR
>
> (SOS) CQ CQ CQ DE AFA3 1421Z PQ6F QUM AR
>
> (MAYDAY) ALL STATIONS ALL STATIONS ALL STATIONS THIS IS ANDREWS - TIME ONE
> FOUR TWO ONE ZULU - SOLENT ONE SIX – DISTRESS TRAFFIC ENDED - OUT
>
>
>
> *URGENCY AND SAFETY COMMUNICATIONS*
>
> *Urgency Signal*
>
> 1. The URGENCY SIGNAL (XXX OR PAN PAN) indicates that the calling
> station has a very urgent message to transmit concerning the safety of a
> ship, aircraft, or other vehicle, and/or the safety of personnel. It has
> priority over all other communications except distress. All stations which
> hear it shall take care not to interfere with the transmission which
> follows the URGENCY SIGNAL. The composition of the signal is:
>
> (1) CW - Three transmissions of group XXX, sent with the letters of
> each group and each successive group clearly separated from each other.
>
> (2) VOICE - Three transmissions of the group of words PAN PAN,
> pronounced as the French word "PANNE".
>
> (3) RATT - Three transmissions of group XXX, sent with the letters of
> each group and each successive group clearly separated from each other. The
> URGENCY SIGNAL is transmitted before the call.
>
> b. The URGENCY SIGNAL may be sent only on the authority of the
> person in command of the ship, aircraft or other vehicle carrying the
> mobile station. It may be transmitted by a land station only with the
> approval of the responsible authority. Within the aeronautical Mobile
> Service the Urgency Signal shall be sent at the commencement of the first
> Urgency communications, and should be used if it is considered necessary at
> the commencement of any subsequent communications.
>
> 1. The automatic alarm signal may be used preceding the urgency signal
> and message concerning the loss of a person or persons overboard when
> assistance of other ships is required and cannot be obtained satisfactorily
> by the use of the urgency signal only.
>
>
>
> *Frequencies*
>
> 1. Maritime Mobile Service. The Urgency Signal and the message
> following it shall be sent on one or more of the international distress
> frequencies (refer to chapter 6) or any other frequency which may be used
> in case of distress. However, the message shall be transmitted on a working
> frequency:
>
> (1) In the case of a long message or a medical call; or (2) In areas of
> heavy traffic when repeating the message transmitted on any of the
> international distress frequencies.
>
> 1. Aeronautical Mobile Service. In the aeronautical mobile service the
> Urgency Signal and the message which follows it should be sent on the
> air-ground frequency in use at the time. If unsuccessful, contact should be
> attempted on any of the SAR assistance frequencies indicated
>
>
>
> *Urgency Messages*
>
> In the aeronautical mobile service an Urgency Message should:
>
> 1. Be preceded by the Urgency Signal (XXX or PAN) preferably
> transmitted three times.
> 2. Consist of as many of the following elements spoken distinctly and,
> if possible, in the following order:
>
> (1) Name of Station Addressed or "All Stations"
>
> (2) Identification of Aircraft
>
> (3) Request for Navigation Assistance (If Required)
>
> (4) Position and Time
>
> (5) Heading
>
> (6) Air speed
>
> (7) Altitude
>
> (8) Aircraft Type
>
> (9) Available Flight Time
>
> (10) Nature of Emergency
>
> (11) Captain's Intentions
>
> In the maritime mobile service, urgency messages may be addressed either
> to all stations or to a particular station.
>
>
>
> *Action by Station Addressed*
>
> Within the aeronautical mobile service the station addressed will normally
> be the station communicating with the aircraft or in whose area of
> responsibility the aircraft is operating. The station addressed by an
> aircraft reporting an Urgency condition shall:
>
> a. Acknowledge the Urgency message.
>
> b. Take immediate action to ensure that all necessary information is
> made available, as soon as possible, to:
>
> . (1) The ATS unit concerned.
>
> (2) The aircraft operating agency concerned.
>
> c. If necessary, exercise control of communications concerned
>
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