Analysis of information sources in references of the Wikipedia article "Pan-pan" in English language version.
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.
The origin of pan pan is from the French "en panne" meaning broken down.
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.
An international radio distress signal, of less urgency than a Mayday signal. Origin 1920s: pan from Fr. panne 'breakdown'.
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