Assuming you're at cruise altitude and there is not a runway available for an immediate descent and landing, the 767 (and maybe the other Boeings) Cargo Fire procedure is to starve the fire of oxygen by descending (or climbing) to FL250 while depressurizing the aircraft. The 767 is depressurized by going to a reduced flow on a single pack. (I assume the descent to 250 is for crew physiological reasons, but don't know that for a fact.)
We are given no data as to how long this procedure takes to attain a PA of 25,000 feet, but I think it might be helpful to turn off all packs for a while and fully open the outflow valve to hurry up the process. After attaining the pressure altitude of 25,000, turning on a pack for equipment cooling and crew heating would probably be required. (Being a cargo aircraft, we don't have to worry about the pax. However, in a pax aircraft, there are people in the container that hopefully would put out a fire before it got too big to manage.)
Any thoughts?
Last edited by F111UPS767; 3rd Oct 2010 at 23:25.