On Thu, 18 Aug 2005 18:50:06 GMT, "Steven P. McNicoll"
wrote:


"GeorgeB" wrote in message
.. .

What would have been the effect if the O2 bottle for the cockpit had
been inadvertently filled with breathing air rather than O2?


From what would the oxygen system be serviced in your scenario? A
compressor?

I've far more experience with industrial compressed gasses than with
aircraft oxygen, and see much more "compressed breathing air" than
BREATHING compressed O2. (Oxygen for oxyacetelyne is to different
standards, but I think it is just as good; several college buddies
would spend some time breathing it after having too much to drink the
night before. Ah, the REAL hangover cure.

Firefighters and scuba divers use it in large quantiies. Bottles are
common with gas suppliers. What I don't know is how the fittings
compare.

Nor do I know how a plane's bottles are filled; via compressor from
low pressure sources, high pressure via cascade bottles, or ???

I do know that the fittings need to be clean of oxydizable materials;
storoes of a little oil on gauge threads, if true, keep one careful.