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Thread: Why 2/3 of the cruising altitude for TAS
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Old 14th Jul 2015, 10:10
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mirkoni
 
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Why 2/3 of the cruising altitude for TAS
Hi chaps,

Just wandering if anyone knows why we use 2/3 of the cruising altitude for calculating average TAS during climbing (and why we use 1/2 for descent). Why this value? Where is it derived from?
Thanks in advance.

Mirkoni.
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