Hi everyone,
Just a thought, I don't know if this has been raised previously as I don't have the time to read the last 200 pages of posts. Given the speculation on a departure from controlled flight due to either stalling or mach tuck, and the idea that this was due to the discrepancy between indicated airspeed and actual airspeed. Couldn't one consider upgrading the flight computer system to challenge the Air Data based on the aircrafts angle of attack and power settings.
For example, ice blocks the pitots slowly, CAS remains the same but the A/P slowly decreases AoA and increases power. Surely if a certain number of parameters are known ie. performance based on CAS AoA and power settings C of G, Trim etc. The aircraft would be able to tell if performance is not meeting what is expected and alerts the pilots.
Just a thought, I am no expert at all but it seems with so much automation and cross checking by the automation systems it could be wise to have this.
J