“Previous experience” doesn’t, unfortuantly, neccessarily mean its applicable to the extant scenario. Too many variables. That AF447 entered a “deep stall condition” is obvious from the data gleaned. But it leaves unanswered the particulars of the aircraft’s CG at the time of the accident vs those “successful recoveries”. Lets hope the recovery of the flight data and CP units resolves this.
Progress in aviation has always been earned in blood. >PS
One small point of disagreement, WRT a deep stall.
The pilots, per the report, generally provided input to the controls to keep the nose up. I infer from that THEY kept the plane stalled, as opposed to a disrupted airflow over the stabilator keeping the plane in a true deep stall.
Sure it looks like one, and indeed it may have been one. but it also could have been ‘caused’ by continued ‘stick back’ input from the crew.