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Instrument Approach Procedure Lettering?
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11th Sep 2007, 06:36
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global707
Join Date: Jan 2004
Location: UAE
Age: 59
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So if X, Y and Z do not stand for anything, why do they not call them P, S and T? I am trying to understand the logic behind the change from P, S and T to X, Y and Z.
Thanks to all so far for contributions
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