In article ,
"C J Campbell" wrote:

Shifting winds and tailwinds should have no effect on your airspeed
indicator.

They would while in the early part of the takeoff roll...it will take
"longer" to notice the airspeed alive when you have a tailwind...GS
would have to exceed the tailwind before you'd get any indication.

--
Dale L. Falk

There is nothing - absolutely nothing - half so much worth doing
as simply messing around with airplanes.

http://home.gci.net/~sncdfalk/flying.html