Hi,
Tell me... if the computer knows it is getting "varying erroneous airspeed from 3 sources" and does not know which one to believe, what should the computer do... keep flying the plane itself basing it's judgments on known bad data or hand the job to a human?
Did ya even think that comment through before you made it?
Methink .. if I understand the idea of the poster....
The autopilot can't rely on bad datas of course ... but it's possible to have another law for the autopilot in this case:
Immediately .. when bad data detected .. autopilot keep speed and altitude attitude (freeze settings) and warn the pilot for check what is wrong .....
The plane continue to fly with same settings as before all go bad ....
It's almost what AF ask in their procedure ......
Actually .. seem's that the autopilot is used as a alarm (by disconnecting) for warn something is wrong ......