Originally Posted by
syseng68k
That sounds like a serious fault in the design, in that under such circumstances, the effect is a positive feedback loop that might be unexpected, not trained for and thus very difficult to recover from.
Hmm - we're talking about an infinitessimally small deviation over time, perceptible only because of the accuracy of modern instruments. I don't have the time or the wherewithal to crunch the numbers, but I suspect that the amount of time it would take for this anomaly to take the aircraft from Max cruising altitude into coffin corner would be longer than the A320 series' range could allow.
I remember someone saying early in this discussion that this anomaly was rectified in the A330/340 systems.
The evidence does not support AF447 being imperceptibly taken into coffin corner by the systems, it very clearly implies that the aircraft was controlled into the stall.