One example of a damaged engine still pulling strongly is the unfortunate Brit Midland 734 diverting into EMF. IIRC, the engine with the fire showed no other signs and operated as normal?
If I may, a fire-related question. When you discharge the bottle, where does it go?
Reason for question is: If airborne, and the bottle discharges into the core, then I would imagine that the extinguishant will be blown out of the back a split second later and not have time to have an effect?
Paxboy, your comments were so astounding to me that I fear I may be misreading them, but I'll try an answer.
I believe the Brit Midland 734 you are relating was the one that started with a flutter fatigued and relase of a fan blade in flight followed by surge sparks and vibration which greatly diminished as the pilot pulled this engine back a mite. Unfortunately he shut down the other engine feeling it was the bad un.
Subsequently when he tried using the broken engine during landing with throttle dithering the vibration broke a fuel line and it caught fire
The fire extunguisher bottles are there to protect the pylon and wing not the engine and as such they discharge outside of the engine within the nacelle area while at the same time shuting off fuel to the engine.
Does this answer your question or have I missed it?