Bertie the Bunyip wrote:
Mxsmanic wrote in
:

Andy Hawkins writes:

Just out of interest, how do you measure speed on the ground?
Obviously the airspeed indicator isn't much use in these
situations...
If you have fancy avionics, they'll tell you your actual ground speed,
as read from an IRU or GPS.

Says mr know nothing..


Bertie


But he is right