That particular Airbus is subject to detachment of the rudder if full rudder is suddenly given at above a certain airspeed. This does not mean it is a bad aircraft.
If a Jihadist pilot wanted to take an aircraft down this is the way to do it. A high speed rudder input could account for the initial 90 degree turn, which would follow with the loss of the vertical stabilizer and a uncontrolled spiral dive of which it would be impossible to recover. If this happened we will find at least one and perhaps both turbines detached from the aircraft and some distance from the main wreckage.
1. Give full rudder input and yaw the aircraft to maximum
2. Give the opposite full rudder input
This will swing the aircraft past the critical point of structural failure and the vertical stabilizer will detach. Game over.
And loss of the vertical stabilizer will initiate an unrecoverable spin? Why?
I
I hope they'll be able to retrieve the CVR, too, where NSTB investigators heard either pilot of MS990 saying shahada as the 767 plunged in to steep dive?
Things have changed since 9-11, huh? Not that we taught when just starting from PPL, with so many mujahadin's masquareeding as refugees I hope we won't see here in America commercial flights also just exploding in the skies soon.