Jeff Spitzer wrote:

George Moore wrote:

    In the case of an airplane cockpit, setting off a Halon system at
altitude could be worse than the fire, unless you are flying on oxygen
via mask.
It has always been my understanding, that Halon effectively kills the
oxygen, which starves the fire !  So, by the time the fire is dead, so
are you !

That's the beauty of Halon.  It doesn't need to remove the oxygen to kill
the fire.  I forget the actual numbers but something like 5% halon will
kill a fire and it takes something like 15%+ to feel any effect in humans.
Not particularly toxic in emergency situations if you know what I mean.

Jeff Spitzer

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