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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]
Mayday: This is the most important call that can be made, due to the fact that it directly concerns a threat to life or the vessel. Some instances when this call would be made are, but not limited to death, collision, and fire at sea. When the Mayday call is made, the vessel is requiring immediate assistance. [1]: 36
Pan-pan (pronounced / ˈ p æ n ˈ p æ n /) [15] is the official urgency voice call. Meaning "I, my vessel or a person aboard my vessel requires assistance but is not in distress." This overrides all but a mayday call, and is used, as an example, for calling for medical assistance or if the station has no means of propulsion. The correct usage is:
Mayday is an emergency procedure word used internationally as a distress signal in voice-procedure radio communications.. It is used to signal a life-threatening emergency primarily by aviators and mariners, but in some countries local organizations such as firefighters, police forces, and transportation organizations also use the term.
A Mayday message consists of the word "mayday" spoken three times in succession, which is the distress signal, followed by the distress message, which should include: Name of the vessel or ship in distress; Its position (actual, last known, or estimated expressed in lat/long or in distance/bearing from a specific location)
PAN-PAN PAN-PAN PAN-PAN Urgent situations that are not life-threatening Immediate, unless there is an ongoing Mayday issue. This is considered to be IMMEDIATE precedence traffic. [39] If the condition is medical, use PAN-PAN MEDICAL, PAN-PAN MEDICAL, PAN-PAN MEDICAL. XXX XXX XXX 4: SÉCURITÉ SÉCURITÉ SÉCURITÉ Important safety information
If a station does use Ch. 16 during distress operations controlling station issues the command "silence mayday". Using a set of international "calling" procedures such as the " Mayday " distress call, the " Pan-pan " urgency call and " Sécurité " navigational hazard call.
The pan-pan call indicated that there was an urgency due to smoke in the cockpit but did not declare an emergency as denoted by a "mayday" call. The crew requested a diversion to Boston (234 nautical miles (433 km; 269 mi) away) before accepting Moncton ATC's offer of radar vectors to the closer Halifax International Airport in Enfield, Nova ...