Originally Posted by
takata
...
But, more importantly, what you do understand from what was at stake in this report of A330-A340 Airprox event seems very far from AF447 case. The main issue was about the proximity of those two aircraft in turbulent weather. TCAS issues would be related with this 1st June 2009 catastrophe?
What was this AoA law incident reported?
...
It is strange to me that the violent manoeuvre by the A340 is assumed possible but very rare so the main recommendation was to not closely stack planes vertically just in case a lower one decides to climb without permission.
possible similarities are:-
Event triggered by encounter with turbulence affecting indicated speed causing a control system mode change from autopilot.
Manual action was required by pilot to recover aircraft - within 30s the aircraft was too high and unable to maintain speed even with (4 in this case) engines at full thrust.
Stretching a point maybe but if pitots were frozen on the way up - you have the classic simultaneous overspeed and stall warnings.