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Date: Mon, 2 Oct 1995 15:14:06 -0700
To: Carl Heinzl <cgh@ma*.ai*.mi*.ed*>
From: cherf@ci*.co* (Scott Cherf)
Subject: Re: Nitrox and Altitude Diving
Cc: fdc02@ix*.ne*.co*, techdiver@terra.net

At 1:11 PM 10/2/95, Carl Heinzl wrote:

>I have not seen ANY real physiological studies cited in any
>literature.  Unless someone can point me to such I think it's time for
>someone to get out the kneepads :^)

Hi Carl -

I can't point to specifics regarding O2 to air transitions at altitude,
but I would suggest starting with the fundamental work that went into
defining the NATOPS rules for aviators.  On observation I made privately
to Joan is that aviators are required to go to pure O2 at operational
altitudes (cabin pressures) above 12,500' MSL.  I don't know of any
rule that prohibits returning directly to air after the vehicle descends
below 12,500'.  Any Navy pilots out there?

Scott.

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