"Ramapriya" wrote:
No Jim, I actually know that report, and the statements of both the
airline and Airbus too. The surprise is in knowing that such action,
which I think is natural,

Rapid, opposite deflections of the rudder are not "natural,"
particularly in a jet transport aircraft.

isn't automatically built into in the design
of an aircraft. Why do you think that's so?

Because designers cannot allow for every conceivable misuse of the
equipment.

Aren't such boat-turns
normal?

Not in that kind of airplane--besides, he wasn't just making a rudder
turn, he was wagging the rudder back and forth.

Should be, isn't it?

Not necessarily. Airplanes are designed for performance that meets a
particular mission. Airliners are not the same as aerobatic aircraft,
for instance.
--
Dan
C172RG at BFM