Originally Posted by
CONF iture
Another big question mark is how the protections could come into play and eventually interfere in the overall process ... The scenarios are multiple and some are scary. Airbus is absolutely silent on that matter.
That is because the protections are gone. Look at the BEA report - every one of the 30+ unreliable airspeed incidents documented included swtich to alternate law.
That means the protections drop out in this event, by design.
I can't see any better way to design it really - if the sensors are giving known-bad data then the system shouldn't fly, or restrict the flight of, the plane based on that data.