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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.
Procedure words (abbreviated to prowords) are words or phrases limited to radiotelephony procedure used to facilitate communication by conveying information in a condensed standard verbal format. [1] Prowords are voice versions of the much older procedural signs for Morse code which were first developed in the 1860s for Morse telegraphy , and ...
Signals can be in the form of blasts on alarm bells, sounds on the ship's whistle or code names paged over the PA system. Alpha, alpha, alpha is the code for a medical emergency aboard Royal Caribbean and Norwegian ships. [1] Alpha Team, Alpha Team, Alpha Team is the code for a fire emergency aboard Carnival Cruise Line ships.
Using the codes eases coordination and improves understanding during multiservice operations. The codes are intended for use by air, ground, sea, and space operations personnel at the tactical level. Code words that are followed by an asterisk (*) may differ in meaning from NATO usage. There is a key provided below to describe what personnel ...
Code 1: A time critical event with response requiring lights and siren. This usually is a known and going fire or a rescue incident. Code 2: Unused within the Country Fire Authority. Code 3: Non-urgent event, such as a previously extinguished fire or community service cases (such as animal rescue or changing of smoke alarm batteries for the ...
(plain language to replace Ten Codes) [23] Phrase Word Brevity Code (c. 1979) [24] Procedure and Officer Details: 10-MAX AWOL - - - Corrupt Officer Officer not following orders Insubordination/ Rogue Officer Go Ahead Under Control In Pursuit Traffic Stop 10-0 — — — — Use caution 10-1 Receiving poorly. Unable to copy - change location
The international distress calls are standardised across land, sea, and air, and so the procedure for relaying a 'Mayday' in the air is the same as for maritime use, e.g., 'Mayday Relay, Mayday Relay, Mayday Relay ...' — Preceding unsigned comment added by 86.8.126.91 14:22, 5 September 2022 (UTC)
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]