Aviator's Oxygen

stuckingfk

stuckingfk

Well-Known Member
Aviator\'s Oxygen

I was looking for a reference from the FAA stating that as pilots we must fill the O2 bottles with aviator grade oxygen.

Anyone have it? I can't seem to find it.
 
Re: Aviator\'s Oxygen

I was wondering about this the other day. I've had people tell me that its the same thing as medical O2 and I've been told that it's different...less moisture I believe. Until I find out from someone who actually knows, I'm sticking with aviator's O2. As far as where to find it...I'm not sure. Try checking an FBO or welding supply company. I think that's where the FBO I worked got it from.
 
Re: Aviator\'s Oxygen

Aviator's breathing oxygen has almost all of the moisture removed. I believe the specs are no more than 2 milliliters of water per liter of gas. That way, it doesn't freeze and stop supply to the pilot if it's being used.

If you look in the A/FD, Acu-qwik, etc. it usually tells which FBO's service oxygen systems.

Where I fly, it's not uncommon to see the mechanics filling the oxygen tank while the line guys fuel the plane. We use it quite a bit. I've never gotten it "on the road," usually a full tank is enough for a trip for one pilot.

[ QUOTE ]
Anyone have it? I can't seem to find it.

[/ QUOTE ]

It will be in Section 8 of the POH/AFM.
 
Re: Aviator\'s Oxygen

[ QUOTE ]
Aviator's breathing oxygen has almost all of the moisture removed. I believe the specs are no more than 2 milliliters of water per liter of gas. That way, it doesn't freeze and stop supply to the pilot if it's being used.

[/ QUOTE ]

That is what I had always heard. I don't remember who was trying to tell me it was the same as medical, but I was a bit skeptical. Thanks!
 
Re: Aviator\'s Oxygen

[ QUOTE ]
Aviator's breathing oxygen has almost all of the moisture removed. I believe the specs are no more than 2 milliliters of water per liter of gas. That way, it doesn't freeze and stop supply to the pilot if it's being used.

[/ QUOTE ]

The moisture hasn't been removed, there wasn't any in there in the first place. Moisture has to be added to medical oxygen to make it safe to breathe for long peroids of time.

[ QUOTE ]
That is what I had always heard. I don't remember who was trying to tell me it was the same as medical, but I was a bit skeptical.

[/ QUOTE ]

In the past there were some differences, but not any more.

Welding and Medical O2 is no diffrent than Aviators O2 regarding contamination and moisture content. They literally all come out of the same LOX tank at the distributing company. There is zero difference between these different "brands" of oxygen.



There is a statement in the Airframe and Powerplant Mechanics General Handbook (from the FAA) that says

"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."

The magic words are "or equivalant"

So you can fill your tanks with pure Oxygen regardless of what is printed on the bottle.

http://www.avweb.com/news/columns/182079-1.html


One other thing, filling an O2 bottle is considered "normal serviceing" under Pt 43 and does not require a mechanic or a logbook entry.

You need to know what you are doing, but you do not need an A&P on many aircraft.
 
Re: Aviator\'s Oxygen

This is what the book I received from the CAMI/FSDO in Oklahoma City says:
"Aviator's Breathing Oxygen (ABO) is designated Grade A, Type I Oxygen,...It must meet a minimum purity requirement, including moisture content, of 99.5% by volume and my not contain more than 0.005 mg of water vapor per liter at 760mm Hg and 68 degrees F. (20 degrees C). It must be odorless and free from contaminants, including drying agents. Do not confuse aviators breathing oxygen with "technical" oxygen or "medical" oxygen."

Hope that makes sense/
 
You must log in or register to reply here.
Back
Top