On Sat, 17 May 2014 06:53:49 -0400, Stormin Mormon wrote:

There were some system using carbon dioxide, and
those displace oxygen.

Halon works on the fourth side of the triangle,
sustained chemical reaction. Actually fire
tetrahedron.

Thank you Stormin' Mormon, for explaining that the proposed
supposition that halon displaced oxygen was not supported in the
literature.

I found a similar explanation to yours in this FAA book on
aircraft Fire Protection Systems:
https://www.faa.gov/regulations_poli...a/ama_Ch17.pdf

It's pretty troubling that some people believe stuff that has
absolutely zero references in the literature that backs up their
claims.

I'm glad you're not one of them!