
1) Annual appeal for help 2) Arista Nashville single 3) BBC television drama 4) Call for help 5) Coronation time 6) Distress call 7) Distress signal 8) Distress signal 9) Emergency communication 10) French word used in English 11) Help wanted word 12) International call for help 13) Parade time in Moscow
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https://www.crosswordclues.com/clue/mayday

1) Distresscall
Found on
https://www.crosswordclues.com/clue/mayday

The ultimate international radio distress call, indicating imminent danger to the life of the occupants onboard and requiring immediate assistance. Its slightly less prioritary equivalent is Pan Pan. The anecdote says it comes from a French pilot who said over the radio
Found on
http://airodyssey.net/reference/glossary/

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 mariners and aviators, but in some countries local organizations such as police forces, firefighters, and transportation organizations also use the term. The call is...
Found on
http://en.wikipedia.org/wiki/Mayday
[TV show] ===User:Haham hanuka=== ...
Found on
http://en.wikipedia.org/wiki/Mayday_(TV_show)

(from the article `distress signal`) ...gun or rocket fired at regular intervals, or a continuous sounding of a fog-signal apparatus; and (3) radio signals such as the Morse group SOS, ...
Found on
http://www.britannica.com/eb/a-z/m/54

The internationally recognized radio distress signal, must only be used to indicate a life threatening situation.
Found on
http://www.diy-wood-boat.com/Boating-terms.html

[
n] - an internationally recognized distress signal via radiotelephone (from the French m`aider)
Found on
http://www.webdictionary.co.uk/definition.php?query=Mayday

International distress call, derived from the French «M’aidez» literal translation «help me».
Found on
https://en.wiktionary.org/wiki/Appendix:Glossary_of_aviation,_aerospace,_an
noun an internationally recognized distress signal via radiotelephone (from the French m`aider)
Found on
https://www.encyclo.co.uk/local/20974
No exact match found.