Lyman,
Except where airspeeds are erroneous due to either blockage of pitots or due to extreme AoA causing large errors in the pitot and static pressures, they correlate closely with groundspeed derived from IRS and GPS. That correlation excludes sudden large loss or increase of airspeed with meteorological origin.
Last edited by HazelNuts39; 12th October 2011 at 19:43.
Reason: large