Originally Posted by
oldoberon
I ask the question again would those rapid degree of heading changes cause the VS to fail or and what do the they indicate ie what could be the cause.
You might want to bear in mind firstly that those are track, not heading, values (FR24 appears not to know the difference and uses both terms interchangeably).
Secondly, and more importantly, the track values are GPS-derived and are subject to the issues described in previous posts (for example at one point the FR24 GPS coordinates show the aircraft apparently going backwards, which clearly didn't happen).
So I don't think the data supports an AAL587 scenario here.