Prologos - I think you've got me on the weight to drag ratio. Of course weight is the downwards force and drag the upward. The point I was atempting to make, however poorly and I should know better, was that the drag is in relation to the square of the surface area, and the large parts of wing and cabin even though they weight more than a human body will fall at a lower terminal velocity due there surface area. I was also considering that wing sections will also produce lift as will most flat objects, which is an additional upward force with the drag. The additional distance the larger parts travelled compared to the bodies was only 2658 metres off the original track, which equates to an additional northern wind componate of approx 27.5 knots.
The stall speed of the 777 at FL 33 would be around 530 Knots dependant on temperature and pressure on the day. Airliners all fly within a very narrow evelope at these levels as the speed of sound and stall speeds are relatively close to each other.
Anyway thanks for pointing out that error, and I hope my points is clearer now.
BB