Originally Posted by
Notanatp
Perhaps this was a symptom of being overweight? Not only did the captain ask to continue runway heading and say flight control problems, but the DFDR data looks a little odd (at least to me). There's a pretty steep pitch up initially (yanking it off at the end of the runway?), a shallow climb profile, and then a bit of sink when flaps retract.
Normal takeoff profile would consist of a relatively steep climb followed by a slight power reduction from takeoff thrust to climb thrust with decrease in climb rate to accelerrate and retract the flaps followed by an increase climb once climb speed was achieved. There is a tendency for the 737 to sink during flap retraction which needs to be countered with appropriate control inputs. If the Captain was not used to hand flying through the clean up phase and was distracted by the stick shaker it is entirely possibly that he was tardy with making the appropriate control inputs to keep from sinking. As far as the overweight question Im sure that is one of things that the investigation will look at but it does not appear that the aircraft was underperforming.