Thanks for that .. I'll review later on today during a coffee break.
I don't have a problem if the box is still helping out sensibly as what is important is what the pilot is presented with in the worst certification degraded mode ...
However, some of the posts appear to be suggesting that the degradation can extend to nil box assistance and a statically unstable aeroplane.. that's my problem at the moment.
Either such
(a) isn't the case
(b) wasn't considered because the estimated MTBF suggested the probability of occurrence was up there with the other very small numbers .. ?
I probably should have bid onto the A320 when I had the opportunity rather than staying on the FLUF.