@Yancey Slide:
I know it's a bit of a big ask, but I recommend going through the Tech Log discussions on AF447 before risking starting the old hamster wheel up again. The <60kts IAS limitation on the validity of AoA data has nothing to do with ground mode, but if you want more detail, then the threads are there for your perusal.
The long and the short of it is that the aircraft did not go into any unusual modes, and the only technical problem was the icing of the pitot tubes. Even that had cleared prior to the aircraft stalling. It should be pointed out that the stall was allowed to develop to a point where the aircraft was so far outside of the flight envelope that any instrumentation would likely have given readings that didn't make much sense.
Last edited by DozyWannabe; 15th Oct 2013 at 16:15.