Three calls of pan-pan in radiotelephone communications, is used to signify that there is an urgency on board a boat, ship, aircraft, or other vehicle but that, for the time being at least, there is no immediate danger to anyone`s life or to the vessel itself. This is referred to as a state of urgency. This is distinct from a Mayday call, which m.
Found on http://en.wikipedia.org/wiki/Pan-pan
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