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IAS to TAS formula
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8th Feb 2001, 11:00
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BOING
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If you want a quick mental conversion that works quite well at lower altitudes.
TAS = IAS + (IAS/60 x Ht (in thousands of feet))
IE TAS = 240 + (240/60 x 10)
= 280
Try it and see if the answers are close enough for your use.
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