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kchz336 kchz336 26-30, M 3 Answers Jan 26, 2012

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1. It is called 3 times to make sure that someone hears the emergency call when there is back noise.<br />
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2. It is used as a emergency distress signal.<br />
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I am a pilot and have used this only once, and I know that it works..<br />
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GOOD QUESTION.....MASTER GILEY

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it is also called 3 times to make sure it is not part of a normal conversation... same applies to similar calls like pan-pan

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It would sound weird calling, December day December day!!

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