I am thinking that the procedure to fly unpressurized at 250 means that someone expects a fire to be suppressed enough to enable flight. However, I would sure like some more info on this. Even if 250 does work in suppressing the fire, eventually one has to descend...
At this time, we do not know when in the flight profile the smoke became so thick, or how much time was spent at lower altitudes, etc.
Last edited by F111UPS767; 3rd October 2010 at 19:23.