Pan-pan explained

The radiotelephony message PAN-PAN is the international standard urgency signal that someone aboard a boat, ship, aircraft, or other vehicle uses to declare that they need help and that the situation is urgent,[1] [2] [3] but for the time being, does not pose an immediate danger to anyone's life or to the vessel itself.[4] This is referred to as a state of "urgency". This is distinct from a mayday call (distress signal), which means that there is imminent danger to life or to the continued viability of the vessel itself.[5] Radioing "pan-pan" informs potential rescuers (including emergency services and other craft in the area) that an urgent problem exists, whereas "mayday" calls on them to drop all other activities and immediately begin a rescue.

The exact representation of PAN in Morse code is the urgency signal XXX, which was first defined by the International Radiotelegraph Convention of 1927.[6]

Etymology

As with "mayday" (from French: venez m'aider, "come help me"), the urgency signal pan-pan derives from French. In French, a French: panne in French pronounced as /pan/ is a breakdown, such as a mechanical failure. In English, it is sometimes pronounced as and sometimes as .[7] [8] [9]

A three-letter backronym, "possible assistance needed" or "pay attention now" derives from pan. Maritime and aeronautical radio communications courses use those as mnemonics to convey the important difference between mayday and pan-pan.[10] [11] [12]

Usage

To declare pan-pan correctly, the caller repeats it three times: "Pan-pan, pan-pan, pan-pan,"[13] [14] then states the intended recipient, either "all stations, all stations, all stations," or a specific station, e.g. "Victoria Coast Guard Radio, Victoria Coast Guard Radio, Victoria Coast Guard Radio." Then the caller states their craft's identification, position, nature of the problem, and the type of assistance or advice they require, if any.[1] An equivalent Morse code signal was "X X X", with each letter sent distinctly.

Medical transports

The phrase "PAN-PAN MEDICAL" is reserved for medical transports. It is used to announce and identify medical transports.[15] [16]

Medical advice

One special case of "pan-pan" is to ask for medical advice. This is a normal "pan-pan" call that includes a phrase such as "request medical advice" and the craft identification, position, and nature of the medical problem. It should not be confused with the term "PAN-PAN MEDICAL" which is reserved for medical transports.[15] [16]

This type of call is specifically for getting a physician's advice for a medical problem that does not, in the opinion of the skipper or master of the vessel, seem life-threatening. The phrase "pan-pan medico" appears in some older reference books, but is not a correct usage.[17]

Once patched through, a physician or other medical expert on land or in another vessel typically asks the radio operator to detail the symptoms and history of the condition, and provide any available patient medical history. The physician typically recommends first aid treatment and gives other advice based on what resources are available on board. In some cases, the medical issue may be urgent enough to escalate the pan-pan to a mayday call for immediate intervention by rescuers, if possible.

Nautical uses

Examples of the correct use of a "pan-pan" call from a boat or ship may include the following cases, provided the skipper or master remains confident they can handle the situation, and that there is no current danger to the life of any person or to the safety of the vessel. Once the urgent situation that led to the pan-pan broadcast is resolved or contended with, conventional practice is for the station that initiated the pan-pan call to make a followup broadcast to all stations, declaring that the urgent situation no longer exists.

A call that originates as a "pan-pan" signal might be followed by a Mayday distress signal if the situation deteriorates to the point of "grave and imminent danger," thus warranting immediate action (intervention, assistance, response) on the part of listeners in accordance with standard operating practices for distress signaling.

Fouled propeller, engine failure or out of fuel: Provided the vessel is now either anchored or under sail and safe from any immediate danger of collision or stranding. The crew may plan to clear the propeller, refuel from an onboard supply, hoist sail, or use alternative propulsion. Alternatively, as part of the pan-pan call, the skipper may request a tow from a suitable vessel, if possible, but without immediate urgency.
  • Small fire on board – now extinguished: Fire is dangerous afloat, but if it was small and contained, and is now certainly put out, and with no injury to people, then a "pan-pan" call is appropriate to warn others that investigations are underway to establish the extent of the damage, clear the smoke from below, and re-establish passage as soon as possible.
  • Unsure of position: Provided there is no apparent danger of stranding or hitting rocks, a pan-pan call on marine VHF radio may allow nearby coast-stations, and perhaps other vessels, to triangulate the source of the transmissions and provide a fix and perhaps offer advice on the best course to safety.
  • Man-overboard recovery: In a man overboard situation, a pan-pan call on VHF makes other nearby vessels aware of the situation and ensures that they keep a lookout, avoid coming too close, avoid excessive wake or otherwise interfering. It also alerts them that the recovery vessel is manoeuvring for urgent life-saving, and therefore may not manoeuvre in accordance with International Regulations for Preventing Collisions at Sea (COLREGS). In a more critical situationthe recovery vessel has lost sight of the person overboard, the person overboard is unconscious, there is a danger of hypothermia, or other grave risk to lifea mayday call is more appropriate, so that other nearby vessels can help rather than keep clear.
  • Overdue vessel: The Canadian and U.S. Coast Guards (and likely similar maritime safety agencies in other countries) issue "urgent marine information broadcasts" concerning vessels reported overdue, as part of the process of a 'communications search' or 'pre-com' phase of uncertain, possible distress, as determined under the authority of a maritime rescue co-ordination centre or joint maritime-aeronautical rescue co-ordination centre.[18] The message content, a description of the vessel under the apprehension of being missing, its last known position, the date or time last heard from, and the supposed route or passage plan of the vessel, is preceded by the procedure words pan-pan and is addressed to "all stations." Any stations having information concerning the whereabouts of the named vessel are asked to communicate with and report same to the nearest coast guard station.
  • Imminent collision alert: A pan-pan call is warranted to attempt urgent radio contact with an approaching vessel that may be in danger or is approaching a dangerous close-quarters situation that would risk collision. This would be a 'bridge-to-bridge' communication, and could be combined with five or more short horn or whistle blasts, which is the "Your intentions are unclear or not understood" signal.[19] A short blast is one second long, compared to a prolonged blast of four to six seconds under the COLREGS. An urgent warning could also be given over the radio, for example, if the called vessel appears unaware that it is at risk of striking a person in a small boat or a swimmer. A loud hailer could also be used along with a radio warning.
  • Medical assistance: Any immediate risk to life makes a "mayday" call more appropriate. If the vessel is heading to shore and wants an ambulance crew at the dock, the local Coast Guard station can arrange this. A physician or other trained medical advisor may also be available on the radio, perhaps by patching through via telephone from ashore or from a nearby vessel.[20] The UK Radiocommunications Authority at one time promulgated a "pan-pan medico"[21] call for cases where someone needed medical help at sea. However, this was never an international procedure word and is not part of the ITU Radio Regulations or related international standards (e.g. International Maritime Organization or ICAO procedures).

    • Marine rescue organisations, such as Coastal Patrol, Coast Guard, and Search and Rescue listen on marine radio frequencies for all distress calls including "pan-pan". These organisations can coordinate or assist and can relay such calls to other stations that may be better able to do so.

    Aeronautical uses

    Aeronautical situations that require urgent assistance but do not pose an immediate threat to life include:

    Pan-pan calls may be made on the aircraft emergency frequency, but they are more often made on the frequency already in use, or another appropriate frequency.

    ICAO Annex 10, Volume V, § 4.1.3.1.1 states "the emergency channel (121.5 MHz) shall be used only for genuine emergency purposes". However, ICAO member states can deviate from this rule. In the United Kingdom, pilots may make "practice PAN" or "training fix" calls.[23] [24] Practice Mayday calls are not permitted.[25]

    See also

    Notes and References

    1. Web site: Safety and Distress Radiotelephone Procedures . Transport Canada . 28 June 2013 . 13 August 2013 . dead . https://web.archive.org/web/20130805145407/http://www.tc.gc.ca/eng/marinesafety/tp-tp9878-menu-662.htm . 5 August 2013 .
    2. Web site: District Eleven Response (dr) . Search and Rescue: Calling the Coast Guard . United States Coast Guard . 13 August 2013.
    3. 1st Coast Guard District . Special Notice To Mariners . United States Coast Guard . 6 September 2001 . 13 August 2013.
    4. Web site: RIC-22 – General Radiotelephone Operating Procedures. https://wayback.archive-it.org/all/20110811001724/http://www.ic.gc.ca/eic/site/smt-gst.nsf/eng/sf00033.html. 2011-08-11. ic.gc.ca.
    5. Web site: RIC-22 – General Radiotelephone Operating Procedures. https://wayback.archive-it.org/all/20110811005224/http://www.ic.gc.ca/eic/site/smt-gst.nsf/eng/sf01334.html. dead. 2011-08-11. ic.gc.ca.
    6. Web site: International Radiotelegraph Convention of Washington, 1927. 87–88. search.itu.int. 2021-01-09. PDF.
    7. Book: Sara Hopkinson. VHF Afloat. 14 November 2008. Fernhurst Books Limited. 978-1-912177-41-7. 53–. The origin of pan pan is from the French "en panne" meaning broken down..
    8. Book: Popular Electronics. 1974. Ziff-Davis Publishing Company. According to regulations, don't have an emergency unless you know the exact meaning of these three terms: Mayday, Pan and Security. They're of French origin and describe the exact degree of distress..
    9. Book: Angus Stevenson. Maurice Waite. Concise Oxford English Dictionary: Luxury Edition. 18 August 2011. OUP Oxford. 978-0-19-960111-0. 1035–. An international radio distress signal, of less urgency than a Mayday signal. Origin 1920s: pan from Fr. panne 'breakdown'..
    10. Web site: Aviation Radio (AVI30316). Part 1 – Aircraft Radio Operation . ausacademy.org . Australian Unmanned Systems Academy (AUSA) . 3 May 2021 . PAN – As a Three-Letter Acronym (TLA): “Possible assistance needed” “Pay attention now”. The TLA is derived from “pan” and is used in maritime and aeronautical radio communications courses as a mnemonic to radio and communications operators. Note: it is very important remember the difference between mayday and pan-pan emergency communications..
    11. Book: Capt. David Moriarty. Practical Human Factors for Pilots. 30 December 2014. Elsevier Science. 978-0-12-800786-0. 168–.
    12. Book: Mike Westin. Olle Landsell. Nina Olofsson. Seamanship 2.0: Everything you need to know to get yourself out of trouble at sea. 11 March 2021. Bloomsbury Publishing. 978-1-4729-7704-5. 122–.
    13. Transport Canada: ""
    14. Web site: Air Traffic Organization Policy, Order JO7110.65W . U.S. Department of Transportation, Federal Aviation Administration.
    15. Web site: Annex 10 to the Convention on International Civil Aviation: Aeronautical Telecommunications. Volume II: Communication Procedures including those with PANS status. Sixth Edition, October 2001 . ICAO . 17 February 2023.
    16. Book: Lees . Graham . Williamson . William . Handbook for Marine Radio Communication 5E . 4 July 2013 . Taylor & Francis . 978-1-134-46377-0 . 34 . 17 February 2023 . en.
    17. Book: Port . Andy Du . Reeds VHF Handbook . 18 May 2021 . Bloomsbury USA . 978-1-4729-8144-8 . 91 . 17 February 2023 . en.
    18. Web site: Marine Communications and Traffic Services. Government of Canada.
    19. Web site: Navigation Rules Online. uscg.gov.
    20. Book: VHF handbook. Tim Bartlett. The Royal Yachting Association. 2009. 53. Southampton. 978-1-905104-03-1.
    21. Web site: Non-GMDSS VHF Radiotelephone Procedures. https://web.archive.org/web/20151229182827/http://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra292.htm. dead. 2015-12-29. webarchive.nationalarchives.gov.uk. 2019-09-14.
    22. Web site: When to Call Mayday Versus Pan-Pan – ATC Communication . 15 June 2022 . 8 October 2022 . https://web.archive.org/web/20221008134535/https://atccommunication.com/mayday-versus-pan-pan/ . dead .
    23. https://www.raf.mod.uk/sites/raf-beta/assets/File/95E50AF2_D570_FF5F_478C01766B2F43C8(1).pdf
    24. Web site: Distress and Diversion Cell: A Practical Guide to Practice Pan and Training Fix | Get into Flying . 26 July 2021 .
    25. Radiotelephony Manual (CAP 413) https://publicapps.caa.co.uk/docs/33/CAP413%20E23%20A1%2026Nov2020.pdf

    This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Pan-pan".

    Except where otherwise indicated, Everything.Explained.Today is © Copyright 2009-2024, A B Cryer, All Rights Reserved. Cookie policy.