X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Thu, 17 Jan 2013 08:02:33 -0500 Message-ID: X-Original-Return-Path: Received: from nm29.bullet.mail.bf1.yahoo.com ([98.139.212.188] verified) by logan.com (CommuniGate Pro SMTP 6.0.1) with ESMTPS id 6016142 for lml@lancaironline.net; Wed, 16 Jan 2013 23:28:51 -0500 Received-SPF: none receiver=logan.com; client-ip=98.139.212.188; envelope-from=mcmess1919@yahoo.com Received: from [98.139.212.150] by nm29.bullet.mail.bf1.yahoo.com with NNFMP; 17 Jan 2013 04:28:17 -0000 Received: from [76.13.13.223] by tm7.bullet.mail.bf1.yahoo.com with NNFMP; 17 Jan 2013 04:28:17 -0000 Received: from [127.0.0.1] by smtp102-mob.biz.mail.ac4.yahoo.com with NNFMP; 17 Jan 2013 04:28:16 -0000 X-Yahoo-Newman-Id: 939285.10734.bm@smtp102-mob.biz.mail.ac4.yahoo.com X-Yahoo-Newman-Property: ymail-3 X-YMail-OSG: brTaHtsVM1msmgzOmn8nZbJDNdUl8bPQH2DeZtPmh3wNKPr GRM_d2634nss69qx7MUPgE_nRyCWFW83aFNyLcZ4UsyvdKou1LxcKu5kqDQR Mz1x9QEQye_Yq4YfxTbWUOuRLhpvpr9D5FFMmzfuspNih_ypWppXy.pT0h8j n.RODzow6Fi15othwdBP_Q5nj9SS5B6XAtlFR5Nim0ZYHEXsMmz4W6wRm5ri whIOEZc2VKDp8SKDwnNne2_cc03x74FwcngWog5uAKLUzDs9SbMwJpYysItT s_9p6vs6XzQAfwBYE1TkdM.lSE82Qm7MNYzX_wxkJOCs5neIFoZ.xpFvKYnk KE4lrjcbUVIXlqQ0aOZN9fLE_nFBUzFN2Le6chi30UXzNkvJ0O.osNyOTDky LT9J3rRRl20HRvnb8xkXZF_ob4qklnlpcC2o27Y3kBz1Sg2aCykHfcYCBT40 xFzyqZlNgWmD7vSKCyCkcMZwwmVzzDU5TqXRP9uHgfRdUwgpC5OCQRx9h5X2 ZFJxvvNOTcuE3O3cUa6lJdjh1tNdR4uXbz8G5qrykII.EvQtx0zYeYka4Puy owBDehEFXOrtRYRH0dA-- X-Yahoo-SMTP: rK4i7HqswBC7mDE8.sOiWQeO4CeReXc- Received: from [192.168.0.46] (mcmess1919@50.73.242.181 with xymcookie) by smtp102-mob.biz.mail.ac4.yahoo.com with SMTP; 16 Jan 2013 20:28:16 -0800 PST Subject: Re: [LML] Re: Nasal canula, 18,000 feet, and the FARs References: From: Steve Colwell Content-Type: multipart/alternative; boundary=Apple-Mail-251FEF5A-317A-4C7F-8A77-1FDD5060AB88 X-Mailer: iPad Mail (9B206) In-Reply-To: X-Original-Message-Id: <083606A3-B1C0-4653-B64A-C4ABBA327A3F@yahoo.com> X-Original-Date: Wed, 16 Jan 2013 23:28:15 -0500 X-Original-To: Lancair Mailing List Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (1.0) --Apple-Mail-251FEF5A-317A-4C7F-8A77-1FDD5060AB88 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii We were flying 15.5 to 17.5 a lot and I got hypoxic three times before I fig= ured it out. =20 First: Our original set up was the mustache with a floating ball flow meter.= Thinking the ball set to float at or slightly above indicated altitude wou= ld get it. Not for me, but my wife was fine. Second try: Upgraded to Mountain High two place electronic Portable Pulse D= emand. This is the gold standard for automatic altitude adjustment and Oxyg= en conservation, more comfortable too with the small cannula. =20 Third refinement: I was still getting headaches and feeling tired after som= e flights. Then I discovered the pulse oximeter that measures blood oxygen l= evel. Now I adjust the flow for 92% and everything is all better. I feel f= resher than a one hour flight at 8500' after three plus hours at 17,500' whi= le enjoying cool cockpit temp, usually smooth air, next to no traffic, occas= ional strong tailwinds and 10 to 11 GPH fuel burns. Additional refinement: I have done several flights with a mask above 10,500= '. Looks like that will be even more effective than a cannula for me. Steve Colwell Legacy 550 Sent from my iPad On Jan 16, 2013, at 4:43 PM, Sky2high@aol.com wrote: > =20 > Tom, > =20 > Ok, you asked for regulation. It would seem that's it. I won't search for i= t now, but because I am well acquainted with creeping hypoxia, there is info= rmation that relates to density altitude (just like the engine), age, physic= al condition, etc. and the effect on O2 absorption, and where gas pressure d= ifferentials start to resist the transfer of O2. Thus, in certain environmen= ts a mask is required to force the O2 pressure high enough to cause the tran= sfer to occur in the lungs. > =20 > The FAA requirements are minimal. When the O2 saturation levels drop to ar= ound 89%, an individual is impaired. Night vision is dramatically affected b= y even minimal reduction in blood O2 saturation. > =20 > Perhaps you should experiment by getting a pulse oximeter (http://www.aero= medixrx.com/Nonin-9590-Fingertip-Pulse-Oximeter.html) and measure how altitu= de affects your personal O2 levels. > =20 > BTW, recognition of impairment may be hindered by euphoria. > =20 > Scott > =20 > PS My 700 MSL home location gives my old fat body O2 results that vary fro= m 95% to 97%. Young healthy folks should be showing 99%-100%. > =20 >=20 >=20 >=20 > For questions or comments regarding e-CFR editorial content, features, or d= esign, em >=20 > =3D --Apple-Mail-251FEF5A-317A-4C7F-8A77-1FDD5060AB88 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8
We were flying 15.5 to 17.= 5 a lot and I got hypoxic three times before I figured it out.  
<= div>
First: Our original set up was the mustache with a flo= ating ball flow meter.  Thinking the ball set to float at or slightly a= bove indicated altitude would get it.  Not for me, but my wife was fine= .
Second try:  Upgraded to Mountain High two place elect= ronic Portable Pulse Demand.  This is the gold standard for automatic a= ltitude adjustment and Oxygen conservation, more comfortable too with the sm= all cannula.  
Third refinement:  I was still gettin= g headaches and feeling tired after some flights.  Then I discovered th= e pulse oximeter that measures blood oxygen level.  Now I adjust the fl= ow for 92% and everything is all better.  I feel fresher than a one hou= r flight at 8500' after three plus hours at 17,500' while enjoying cool cock= pit temp, usually smooth air, next to no traffic, occasional strong tailwind= s and 10 to 11 GPH fuel burns.
Additional refinement:  I= have done several flights with a mask above 10,500'.  Looks like that w= ill be even more effective than a cannula for me.

Steve Colwell   Legacy 550

=
Sky2high@aol.com wrote= :

 =20
Tom,
 
Ok, you asked for regulation. It would seem that's it. I won't search f= or=20 it now, but because I am well acquainted with creeping hypoxia, there is=20 information that relates to density altitude (just like the engine), age,=20= physical condition, etc. and the effect on O2 absorption, and where gas pres= sure=20 differentials start to resist the transfer of O2. Thus, in certain environme= nts=20 a mask is required to force the O2 pressure high enough to cause the transfe= r to=20 occur in the lungs.
 
The FAA requirements are minimal. When the O2 saturation levels drop to= =20 around 89%, an individual is impaired. Night vision is dramatically affected= by=20 even minimal reduction in blood O2 saturation.
 
Perhaps you should experiment by getting a pulse oximeter (http:/= /www.aeromedixrx.com/Nonin-9590-Fingertip-Pulse-Oximeter.html)=20 and measure how altitude affects your personal O2 levels.
 
BTW, recognition of impairment may be hindered by euphoria.
 
Scott
 
PS My 700 MSL home location gives my old fat body O2 results that vary f= rom=20 95% to 97%. Young healthy folks should be showing 99%-100%.
 

For=20 questions or comments regarding e-CFR editorial content, features, o= r=20 design,=20 em

=3D
= --Apple-Mail-251FEF5A-317A-4C7F-8A77-1FDD5060AB88--