As they are limited to 350 knots it seems unlikely that they would be calibrated much beyond that at any altitude.
The 757 cruises at 500+ knots at altitude. You should learn the definition of equivalent airspeed. Dynamic pressure does not effect
static pressure. Mach shockwaves, can (as pointed out above re: The Concorde). This is why the static system is based on Mach number and calibrated (errors removed) through an air data computer.
A320, you appear to be unaware that earlier in this thread it was pointed out that the ground elevation was determined at each position report, and added to the radalt height, so a proper radalt altitude was obtained. In the last few seconds before impact there are no buildings which can confuse the radalt.
You should check these threads.
Warren Stutt Decode Shows Altitude too high to Impact Pentagon
http://pilotsfor911truth.org/forum/index.p...&p=10778240
Warren Stutt's admitted lack of expertise with respect to FDR Investigation
http://pilotsfor911truth.org/forum/index.p...&p=10799563
RA - PA Correlation, proving the "Altitude Divergence" calculated by Legge/Stutt was due to RA measuring from an object higher than ground level. Fatal to the Legge/Stutt argument.
http://pilotsfor911truth.org/forum/index.p...&p=10794074
If Legge/Stutt "Altitude Divergence" calculations were correct, Aircraft would be slamming into the ground. IAD ILS RWY 01R Approach Analysis, Instruments required for IFR Flight Based on Regulation.
http://pilotsfor911truth.org/forum/index.p...&p=10793490
Calculations based on Stutt Theory with respect to RA Tracking Capability, proving Stutt's theory false.
http://pilotsfor911truth.org/forum/index.p...&p=10794159