Originally Posted by
mross
According to the AD bulletin, one of the effects of an AoA sensor failure is 'stick shaker on the affected side only'. So the computers can use 'logic' to determine this.
The stick shaker is simply caused by a high AoA reading, regardless of its validity, which,
in this particular case can be a symptom of a faulty sensor, when otherwise there are no indications of a stall. The stick shaker is not used as a fault-condition indicator by design.
So rather than deciding that it is faulty, the stick shaker activating on an erroneously high-reading AoA input means that the stick shaker logic does
not decide that it is erroneous, but takes it at face value and activates the shaker. It's probably deliberately a very simple system: fewer things to go wrong.
Bernd