Originally Posted by
physicus
Read the AD. Loss/malfunction of a SINGLE AOA sensor can result in nose down trim input being automatically applied.
would rather we not get into an A versus B thing, those just add noise to no good end.
The point you mention there was raised in the LionAir thread about two versus three on the AoA gages: if only two, one's vote wins, the good one or the bad one?
If the "bad one's" vote wins, what then? The AD was issued with the understanding of the system (as you note) folded in.
We don’t know whether that was a factor in this accident until FDR/CVR are located and analysed.
Yes, we agree on that. What I was thinking was that with the recency of LionAir accident, MAX crews would tend to be aware of the procedure in the AD, so perhaps looking at that failure mode first is a red herring? No idea. Not enough info. One hopes the FDR/CVR data remain intact.