I tweaking the contrast and gamma in this video of the Bagram Afghanistan airfield crash. I zoomed in on the part where the 747 stalls and crashes. From this clip you can see the pilot had the aircraft in too-steep of ascent, which caused the aircraft to stall and plunge to the ground. Some are saying that a 'weight shift' was to blame, but the left wing drops down first, showing that lift have been lost, resulting in a stall due to too-steep ascent.