Fuel Config
Just a thought. On the 747-400 at the end of a sector in the normal fuel config, you basically have the four engines each feeding off four independent tanks.
Don't know the tank layout of the 777 but the basic philosophy would still hold true, each engine would be feeding off its own independent tank.
If you are suggesting fuel contamination or water droplets, it would mean that this manifested itself at virtually the same time in each tank?
As an aside, I agree with the suggestions that if it had happened further up the slope the keeping 200 plus kts and intermediate flap and gear up would allow you to basically fly the glide slope or more sensibly, a few dots high, and drop the gear at 500ft.
For this to happen at 600ft, gear down and land flap, there are very few options......sometimes god is a real ****.
See ya