vee tee you are talking from the wrong end. Turn yourself upright and start again.
I remember a completely analogue Boeing losing air data and guess what it crashed.
I remember a 757 having a problem with only one speed source and not all 3.
Guess what...it crashed.
Aircraft are complex and inherently safe. When things go wrong however, regardless of manufacturer analogue/digital, all rules are null and void.
Now please come and join the real world.