MOTOROLA
Thanks for that report. I hadn't seen it before and it is relevant. The crew in the linked report tried to get more performance from the aircraft than they should, but autotrim is what led them down the primrose path.
I wonder if we still had the trim buttons on the stick/wheel whether we would be having this type of accident?
Yes, trim runaways seem to be prevented with properly designed autotrim, but the surreptitious changing of trim without annunciation is clearly hazardous.
At the minimum, the Airbus needs some sort of loud clicker when it changes trim so that the crew is aware of what it is doing.
A whole string of loud clicks would be a warning to see what is going on.
But with the AF447 commotion in the cockpit, would it have been audible?
Over to you, Airbus, for some redesign work.