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16th May 2005, 14:31

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+'ve ROC

Join Date: Mar 2005

Location: UK

Age: 39

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GS, IAS, Mach...

Could somebody 'in the know' explain the difference between IAS, GS and Mach?

Why does aviation use Kts instead of mph / kmph?

Im I wrong in assuming that Mach x is dependant on air pressure, altitude etc?

Cheers