Originally Posted by JamesT73J
Knowing nothing about the lockout systems in the fuel for the CF6-80A or 767 I'd guess that until the fuel supply was shut-off there would have been a continual supply for the fire from the combustor(s).
I'm quite sure that fuel to the combustor stopped pretty quickly for two reasons:
1) Fuel limit schedules in any modern gas turbine are proportional to HPC exit pressure, and it was instantly dumped when the case was ruptured by HPT parts. Undoubtedly there was an instantaneous fireball, but I doubt the engine fire lasted more than a second or two.
2) The HP fuel pump is driven by the N2 gearbox, which came quickly to a halt.