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Old October 22nd 05, 04:13 AM
Doug
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Default Wherewhendid dual speed on ias come from

Yes, usually called Groundspeed now. This is what the GPS gives you.
Still Knots True is what gets you there, NOT Knots Indicated. Of course
you have to factor in the headwind component.

Of course the only difference between Knots True and Groundspeed (in
knots) is the headwind/tailwind component.