Mad(Flt)Scientist
In other words, the data probably are a decent representation of what the crew saw, but may have little relationship to the true aerodynamic conditions of the time.
I agree. But it's not, and IMO by far, the only picture of the events in this cockpit.
First of all, the first stall was probably (a big "probably" )announced by the # 3 AoA... But we don't know for certain what happened to that sensor and its behaviour -to me - is suspect :
Look at the report :
"
...At 15 h 45 min 19 s...The stall warning stopped...
At 15 h 45 min 20 s, the airplane’s pitch was 7°, its speed was 138 kt..." That stall warning was awfully long, wasn't it, seeing the acceleration of the airplane out of the low speed range ?
If, as I suspect, the # 1 and 2 AoA sensors were blocked by some sticky stuff and/or icing, the same should have, or could, rather, have happened to the # 3 which sits very close to #1...
So, at least on that first stall, we may have some conflicting informations presented to the crew : an IAS is the "safe" range and a stall warning...