From another website,,
A message from a friend:
Gusty takeoff, heavy rain, heavy plane, short runway, and at night. Used flaps 20.
At accel height, CA (PF) called for flaps 5. FO went through the gate and selected flaps 1. When climb rate dissipated, CA looked over to see the lever and unknowingly banked over as well. CA became disoriented and neither pilot noticed the dive until the GPWS warning. 2.7Gs at 775’ AGL to recover.