When the PF made the "left-nose up input" (notice singular), it seemed to solve the (small) problem he had at AP cutout. The next time we are given is 11 seconds later and no further inputs have been made on the SS (that we know of) and the aircraft seems to have been in stable and level flight for that 11 seconds.
Question 1: So if it was such a drastic input to initiate a 7K/ft/mn 'zoom climb' wouldn't it have begun much quicker especially with the speed and altitude they were at?
At that 11 second point into the incident, the note is clear that "the pitch attitude increased and the plane began to climb" keeping in mind this is 11 seconds after the only known control input. Also, the wording (the pitch and the plane did X) leads me to think the aircraft did this as no other control inputs are mentioned.
Question 2: With the different protections removed in Alt law, how would the aircraft increase pitch to such a degree with no inputs? Could turbulence/updrafts be sufficient to induce such a pitch up?
About 15 seconds into the incident, "the PF made nose down inputs" (notice plural). This seems to indicate he made more nose down than up however, these multiple inputs only reduced the climb rate but did not end it. Keep in mind, the THS had not moved at this point, that comes later. The roll left and right indicate to me there was turbulence involved at this time.
Question 3: If one left nose-up input starts such a climb why were multiple nose down inputs not enough to completely arrest it? And since the PF noticed the climb and tried to correct it, why did he let it continue at 700ft/mn for the next 35 seconds?
At 45 seconds into the incident, the aircraft ran out of energy and the AoA increased, setting off the stall alarm. Thankfully, the speeds had returned to over 60K or that might not have happened either (see later on). "The thrust levers were positioned in the TO/GA detent and the PF maintained nose-up inputs."
Question 4: Is it possible, despite the PNF telling PF Alt Law, the PF (whose speeds may have been valid at this time) thought he was back in Normal Law?
That to me is the chain of events that led to the stall with PF holding nose-up and THS moving to max due to those commands. The note is so vague on the fall, almost impossible to raise questions as of yet. My pet theory is the Captain got back in the LHS and took over the last minute but no real evidence except not sure senior PF would have given the stick over to junior PNF.
Thanks to any/all that can shed any light on what I see as the chain of events that all have to happen to lead to an accident of this nature.