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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 ...
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)
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)
I don't know about PAN-PAN, but SEELONCE, MAYDAY, PRU-DONCE, and FEENEE are English respellings of French silence (silence), m'aidez (help me), prudence (prudence, cautiousness, discretion), and fini (finished, done), respectively. MAYDAY from m'aidez is well known, but I'm not familiar with the others. Such respelling makes sense in a code ...
On February 13, 2018, around noon local time, a Boeing 777-222 [a] airplane, operating as United Airlines Flight 1175 (UA1175), experienced an in-flight separation of a fan blade in the No. 2 (right) engine while over the Pacific Ocean en route from San Francisco International Airport to the Daniel K. Inouye International Airport, Honolulu, Hawaii. [1]
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]
Also known as a radio telegram or radio telegraphic message, radiograms use a standardized message format, form and radiotelephone and/or radiotelegraph transmission procedures. These procedures typically provide a means of transmitting the content of the messages without including the names of the various headers and message sections, so as to ...