(Caveat - I have no specific FBW background)
I am a tad confused by some of the recent posts commenting on stability.
If the aircraft, in degraded modes, gets to the stage of having no computer protections, then it would appear to be unflyable for the typical pilot unless statically stable along with a dynamically stable SPO. If statically neutral or marginally unstable, still flyable if one knows what to do .. and then only for a short while until the fatigue levels take over any semblance of finesse.
However, I cannot imagine that it would have been certificated unless it were stable in the worst degraded mode ?
Has anyone any information regarding the matter ? Specifically,
(a) as modes degrade does the aircraft get to the point of having nil computer assistance ?
(b) if so, what are the stability characteristics ?
I am presuming that there is no flight test data relating the the AF447 extent of stalled flight ...