Thanks, A33Z.
ADIRU computes AOAi from sensor resolver cos. and sin. and calculates
AOAc as function of AOAi, FLAPSLAT CONFIG and Sensor position(LH/RH)
If CAS < 60 Kts AOAi & AOAc are set to 0° and SSM (System Status Matrix) is set to NCD (No Computed Data),
this is also valid for TAS 0 Kts if CAS < 60
If CAS < 30 Kts it declares itself invalid and outputs 0 Kts and NCD.
So if we have the confusers not believing speed, or if they sense low speed, they forget about AoA protection? Does this work if the speed is zero or 1000 kts due to iced up pitots?
I can understand a WoW switch and 60 knots on the ground, but inflight???
Guess the engineers designed the system according to spec.