Originally Posted by
bearfoil
Not the mayonnaise end of the traces, the other end. Distinctly show the elevators going NOSE DOWN, The THS trace remaining flat.
That could equally easily be explained by the lack of time for the nose-down inputs to take effect. Looking at the traces (if I understand them correctly), the elevators never return to neutral completely, but begin to move towards "nose-down" twice - once in response to the PF's brief nose-down input at about 2:13:32, and again when the PNF begins pushing nose-down at about 2:13:45 (which correlates with the CVR). This begins with a full-authority push, but gradually tends back towards neutral over the next 15 seconds ("I'm pitching up?") - not enough to move the THS.
During this time the PF returns his stick to neutral, but then begins pulling again at 2:13:52 or thereabouts. At 2:14:05 he makes the statement "We should be pulling, we're at 4,000 ft", at which point the PNF gives up pushing and starts pulling - by this point they are seconds from sea level.
At no point is there a commeasurate nose-down input capable of counteracting the full-authority nose-up command made by the PF at around 2:11:40 (or thereabouts) and subsequently held for over a minute.