My mind's wide open on the D to A error, though I'll remain interested.
Fzz, one post shortly before yours shows the AoA diverging from a commons zero with distinct slopes.
Ethiopian airliner down in Africa
I don't know what to make of that, inasmuch as vanes are flopped anywhere but zero while bouncing along the ground. If t=0 is at some point during the acceleration run then how come they are both zero? Rhetorical question.