A design flaw is the inhibition of the stall warning based on airspeed, instead of the weight-on-wheel switches. If the WoW switches are saying it is flying, then the aircraft must be flying, right??? Is this too obvious??
To invalidate the stall warning on airspeed alone is stupid.
There are three parameters:
* WoW switches (FLYING)
* Airspeed (STALL, though invalid)
* AoA (STALL)
3 out of 3 says it is stalled, even though the airspeed is invalid in this case.
If any of the other two parameters were not stalled:
* WoW switches (FLYING)
* Airspeed (STALL, though invalid)
* AoA (FLYING)
with the speed being unreliable (and the system knowing this), chances are it is flying! This of course ignores the fact there are MULTIPLE AoA vanes sensing a stall condition.
Last edited by ECAM_Actions; 5th Jul 2012 at 17:48.