Mindboggling stuff, as bad as advanced sailing theory. So presumably non of the boundary conditions for any of these swapover points are known for the A320, and so there is no way of knowing exactly when and how it will stall and or spin? especially if you include such things as changing CofG, weather etc.
If I recall the test regime for the 380 (I guess the 320 was similar) that consisted mostly of slowly going slower and slower as well as faster and faster until things got obviously dangerous, ceasing before you crashed and telling the computer not to let the AC go there. That with the background of fairly low g loading limts for the airframe which would make many escape strategies impossible anyway.
Last edited by DrPhillipa; 19th Jan 2015 at 04:50.