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On Tue, 29 Jan 2013 18:31:09 -0500, "Jim Wilkins"
wrote:

And there was no reason under the sun (or stars) for an A3 to be
flying anywhere CLOSE to 60 kt. Minimum landing soeed is over twice
that speed EMPTY. And it goes up the heavier the plane is.

It is virtually impossible to "stall" a functioning A3X plane - it
will just descend like an elevator, under full control. The GPS will
show a rapid rate of descent even when the static port is totally
blocked.

And yet they did stall it, at extreme altitude in "coffin corner", and
then fell flat with an indicated forward airspeed below the 60kt
threshold until they pitched down, which triggered the stall warning
for the wrong reason. The altimeter tape showed them that they were
falling, but not why.

Now they know and that particular accident is extremely unlikely to
repeat, but what other unusual condition wasn't predicted or tested by
the programmers?

http://en.wikipedia.org/wiki/Aeroflot_Flight_593

http://en.wikipedia.org/wiki/Aeroper%C3%BA_Flight_603