THanks for the info.
Looks like , built in flaws are there
to remind us to be pilots.
I have also seen a 744F 'misbehave'
on the decend.
Probably because the landing weight was
299T.
Vnav decend, took the a/c deep into
'barber-pole' before a/p decided to
pitch up.
GOT a FDAP inquiry for that incident.