X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Tue, 09 Sep 2014 13:27:01 -0400 Message-ID: X-Original-Return-Path: Received: from fmailhost01.isp.att.net ([204.127.217.101] verified) by logan.com (CommuniGate Pro SMTP 6.0.9e) with ESMTP id 7136164 for lml@lancaironline.net; Tue, 09 Sep 2014 11:04:03 -0400 Received-SPF: none receiver=logan.com; client-ip=204.127.217.101; envelope-from=lancair1@bellsouth.net Received: from dougdesktop (adsl-98-71-198-40.jax.bellsouth.net[98.71.198.40]) by isp.att.net (frfwmhc01) with SMTP id <20140909150328H01004gklle>; Tue, 9 Sep 2014 15:03:28 +0000 X-Originating-IP: [98.71.198.40] From: "Doug Johnson" X-Original-To: "'Lancair Mailing List'" References: In-Reply-To: Subject: RE: [LML] time to passing out X-Original-Date: Tue, 9 Sep 2014 11:03:19 -0400 X-Original-Message-ID: <02f101cfcc3f$3147aaa0$93d6ffe0$@bellsouth.net> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_02F2_01CFCC1D.AA36CDF0" X-Mailer: Microsoft Outlook 14.0 Thread-Index: AQE5vpdbsnP3un7nLT6gNxpGGunxE50k/hnQ Content-Language: en-us This is a multipart message in MIME format. ------=_NextPart_000_02F2_01CFCC1D.AA36CDF0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Jon, we certainly should be carrying O2 as backup. The biggest problem = in these events revolves around one of the following: 1) the loss of = cabin pressure is gradual, and unrecognized for some time, 2) there is = no O2 in the system (leaks, prior use, etc.=E2=80=94we should all have = the gauge level check on our preflight list); the system doesn=E2=80=99t = work (loose hoses, etc.), 3) relating to the first item, if the = pressurization loss goes on for a while before recognized, the pilot can = lose common sense before consciousness=E2=80=94not remembering which way = to turn the valve on the tank under the seat, forgetting how to program = the auto-pilot for lower altitude, be more concerned with high fuel = consumption down low (turbine guys) leading to poor prioritization of = needs (save gas vs. save life) and poor cockpit resource management. As = pointed out in other posts, we lose tolerance to hypoxia as we age, as = well=E2=80=A6 =20 I have a rule that if flying above FL 200, I always have the mask out = and dangling around my neck; and yes, I always check the gauge under the = seat when I climb in=E2=80=A6 =20 Douglas W. Johnson, MD PA Ret. USAF Flight Surgeon, in another life=E2=80=A6 =20 My question to all the pressurized guys flying the flight levels is = don't you carry emergency oxygen? I would think that would be the first = thing to do with a pressurization problem as well as descending? I'm not = a flight level guy yet, but I've been on flights in the flight levels = and was briefed on emergency procedures for decompression.=20 Put the oxygen on and go down. --=20 AI Systems (541)815-7381 ------=_NextPart_000_02F2_01CFCC1D.AA36CDF0 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

Jon, we certainly should be carrying O2 as backup. The biggest = problem in these events revolves around one of the following: 1) the = loss of cabin pressure is gradual, and unrecognized for some time, 2) = there is no O2 in the system (leaks, prior use, etc.=E2=80=94we should = all have the gauge level check on our preflight list); the system = doesn=E2=80=99t work (loose hoses, etc.), 3) relating to the first item, = if the pressurization loss goes on for a while before recognized, the = pilot can lose common sense before consciousness=E2=80=94not remembering = which way to turn the valve on the tank under the seat, forgetting how = to program the auto-pilot for lower altitude, be more concerned with = high fuel consumption down low (turbine guys) leading to poor = prioritization of needs (save gas vs. save life) and poor cockpit = resource management. As pointed out in other posts, we lose tolerance to = hypoxia as we age, as well=E2=80=A6

 

I have a rule that if flying above FL 200, I always have the mask out = and dangling around my neck; and yes, I always check the gauge under the = seat when I climb in=E2=80=A6

 

Douglas W. Johnson, MD PA

Ret. USAF Flight = Surgeon, in another life=E2=80=A6

 

My = question to all the pressurized guys flying the flight levels is don't = you carry emergency oxygen? I would think that would be the first thing = to do with a pressurization problem as well as descending? I'm not a = flight level guy yet, but I've been on flights in the flight levels and = was briefed on emergency procedures for decompression. =

Put the oxygen on = and go down.

--

AI = Systems

(541)815-7381

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