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Why Is 'Mayday' the International Distress Call?

If your pilot calls "Mayday!" on the communications system, you know you're in big trouble. But where did this call come from and why not use the standard "SOS"? Plus, the global language of pilots, why airplane windows are round and more about planes and flying.

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Why Is 'Mayday' the International Distress Call?
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    Why Is 'Mayday' the International Distress Call?

    Why Is 'Mayday' the International Distress Call?

    In May 2020, the pilot of Pakistan International Airlines Flight PK 8303 reported technical problems and uttered the dreaded "mayday" alert. "We have …

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