@mainichi
"Carbon-composite fiber fuselage burned..." ....like charcoal, perhaps...because that is the functional description of charcoal.

What needs to be determined is what exactly fueled the jet's fire--was it 100% jet fuel or was the carbon fiber contributing to the fire, as if it were charcoal?

And then there's the matter of fiber acting as a wick to distribute uncontained jet fuel, too, without the carbon part of the fiber composite being flammable--just a conveyance.

There's no doubt in my mind that the carbon component didn't cause any toxic fumes--that would be the other composite components.

Hmmm!