Originally Posted by Hunter58
The pilots recognized the unavailability of information of the speed information. What they did not due is to follow with the appropriate actions.
The pilots recognized the disappearance of some speed
symbols, not a disappearance of the indicated airspeed. They would have been much better served with such disappearance of the all speed scale. That some speed symbols disappear is NOT a cue to trigger the UAS memory items.
The system knew something was wrong with the indicated airspeeds as it decided to disconnect AP but did not think as necessary to advise the pilots for the reason it had disconnected that AP.
The most difficult part in a scenario of UAS is to realize first that there is a UAS.
As soon it is a recognized, the pilot switch to the requested procedure, in this case a memory item – No guessing.
Pilots are trained to apply procedures and are pretty good at it – It helps so much if they are given the appropriate GO signal that will guide them in the right direction.
The system knew but did not inform – What a waste.