Video Why People On Planes Say “Mayday” in an Emergency?

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In this video:

In 1923, a senior radio officer, Frederick Stanley Mockford, in Croydon Airport in London, England was asked to think of one word that would be easy to understand for all pilots and ground staff in the event of an emergency.

Want the text version?: http://www.todayifoundout.com/index.php/2014/01/planes-ships-used-word-mayday-distress/

Sources:

http://www.marine-knowledge.com/marine-safety/mayday-distress-signal.html
http://en.wikipedia.org/wiki/Mayday
http://www.thelinguafile.com/2013/05/the-etymology-of-mayday-and-voice.html
http://www.etymonline.com/index.php?term=mayday
http://en.wikipedia.org/wiki/United_Airlines_Flight_93
http://en.wikipedia.org/wiki/British_Airways_Flight_5390
http://en.wikipedia.org/wiki/Pan-pan
http://en.wikipedia.org/wiki/Frederick_Stanley_Mockford