That's all "Cover Your Ass" stuff that if not interpreted well enough
will tend to cost you more money. Why not check the numbers on the
modern gasses. You may find something interesting, and remember that
you're filling portable bottles, not system bottles. When was the
last time it was freezing inside your cabin?


On 24 Dec 2004 05:25:24 GMT, (Blanche Cohen)
wrote:

I quote from the FAA and related regulations (these are the only one's
I found that do not related to altitude, equipment, etc.)


AC 43-16A - Aviation Maintenance Alerts, #36, July 1981
"Do not confuse aviators breathing O2 with hospital/medical O2. The
latter is
pure enough for breathing but the moisture content is usually higher which
could freeze and plug the lines and valves of an aircraft O2 system)....
Aviators breathing oxygen going into aircraft oxygen systems should meet
the purity and moisture specifications as contained in Military
Specification MIL-0-27210: purity - 99.5 percent by volume (minimum);
moisture - 0.005 milligrams per liter of gas (maximum)."


AC 65-9A - A & P Powerplant Mechanics General handbook,
Chp 11. Ground servicing
" Only oxygen marked "Aviators Breathing Oxygen" which meets Federal
Specification BB-0-925a Grade A or equivalent may be used in aircraft
breathing oxygen systems."

SAE AS 8010 Aviators Breathing Oxygen Purity Standard.

So -- there are no mandatory regulations that I could find. So if
the supplier's O2 meets the MIL spec or Federal Spec, there should
be no argument.

*sigh*

I really got to get a life...