Originally Posted by MFS
its unfortunate that Ab don't appear to have a scheme to determine that a probe value is valid
There are at least two means to check 'reasonableness' of an AoA value:
a. the method apparently used by BEA to calculate AoA: from vertical speed, TAS and attitudes in pitch and roll;
b. the algorithm that presumably produces the "CHECK GW" message: from the GW calculated in the FMS, airspeed and accelerations.
regards,
HN39
P.S. Perhaps the 'monitoring system' should not be trusted to say which parameter is at fault, but at least it can indicate that there is an inconsistency between the parameters involved.