X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Tue, 09 Sep 2014 13:45:11 -0400 Message-ID: X-Original-Return-Path: Received: from Tiger.zaltanatech.com ([66.18.11.40] verified) by logan.com (CommuniGate Pro SMTP 6.0.9e) with ESMTPS id 7136366 for lml@lancaironline.net; Tue, 09 Sep 2014 12:30:08 -0400 Received-SPF: error receiver=logan.com; client-ip=66.18.11.40; envelope-from=jay@presagesolutions.com Received: from Tiger.zaltanatech.com ([10.3.162.40]) by Tiger.zaltanatech.com ([10.3.162.40]) with mapi; Tue, 9 Sep 2014 11:23:59 -0500 From: Jay Hamilton X-Original-To: Lancair Mailing List X-Original-Date: Tue, 9 Sep 2014 11:23:58 -0500 Subject: 28,000 feet -- Nowhere to go Thread-Topic: 28,000 feet -- Nowhere to go Thread-Index: Ac/MS0sfmLyMiXIKS5CYNOCvZJ1cIQ== X-Original-Message-ID: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US x-tm-as-product-ver: SMEX-10.5.0.1057-7.500.1017-20538.004 x-tm-as-result: No--34.013600-5.000000-31 x-tm-as-user-approved-sender: No x-tm-as-user-blocked-sender: No Content-Type: multipart/alternative; boundary="_000_EBA67802C13CE448AE4EA386F38AA4CD7350ADCABATigerzaltanat_" MIME-Version: 1.0 --_000_EBA67802C13CE448AE4EA386F38AA4CD7350ADCABATigerzaltanat_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable I have never replied to any posting to the LML but I think this is one time= I can really offer some insight. I have 17 years of military flying expe= rience -- I flew as a door gunner on CH-46 Helicopters (800 hours) in the = USMC and as loadmaster on C-130H2 in the US Air Force (2500 hours), with th= e latter being a pressurized aircraft. Furthermore, I also have another 20= 00 hours as pic in pressurized aircraft -- Beechcraft Dukes and Lancair 4P'= s. As part of my C130 qualification, I was required to go through the pressuri= zation chamber every 4 years. The purpose of the pressurization chamber is= to identify our individual hypoxic symptoms. For some people it becomes c= onfusion and other become nauseous. We attended a ground school prior to e= ntering the pressurization chamber so that we would stay current on what hy= poxia is, how it happens, and what are the symptoms -- we didn't just walk = into the pressurization chamber. While in the pressurization chamber we we= re required to execute repetitive tasks while they instructor drop the "air= craft" pressure. As I just wrote, confusion is the most common symptom for= most people but nausea can occur in others, too. As we conducted our repe= titive tasks it soon became clear that the simplest tasks were becoming inc= reasingly difficult to concentrate and execute as well as remembering the n= ext task. We had been trained to recognize the symptom so the next immedia= te thing to do was to go on oxygen. Hypoxia is insidious so it is very, very important that everyone who flies = a pressurized aircraft understand their individual symptoms. Ultimately, i= f you don't recognize the symptom and take corrective action, you will lose= consciousness. At the altitude this gentleman was flying he only had seco= nds to recognize his symptoms before he was unable to think and act coheren= tly -- you won't get two minutes to recognize your hypoxic symptom. It's = easy to speculate on what he did or didn't do but I suspect that he wasn't = aware of his own symptoms as they relate to hypoxia and he quickly went int= o a state of confusion before he could make coherent decisions. My recommendation is that EVERYONE who flies a pressurized aircraft experie= nce the pressurization chamber -- not just once -- but on a regular interva= l because as you age, even if you are very fit, the onset of hypoxia will h= appen quicker resulting in the symptoms will occurring sooner. It's impera= tive that a pilot know when they're suffering from hypoxia; otherwise, they= 're rolling the dice when they fly a pressurized aircraft at the flight lev= els. Jay Hamilton -----Original Message----- From: Lancair Mailing List [mailto:lml@lancaironline.net] Sent: Tuesday, September 09, 2014 5:00 AM To: Lancair Mailing List Subject: lml Digest #4737 Lancair Mailing List Digest #4737 1) Prop Boots by "jwilless@itd-nc.com" > 2) 28,000 feet NO WHERE TO GO BUT DOWN by PETER WILLIAMS > 3) TIME TO PASSING OUT by PETER WILLIAMS > 4) 28,000 feet NO WHERE TO GO BUT DOWN? #2 by PETER WILLIAMS > 5) FLIGHT LEVEL REALITY OX MASK by PETER WILLIAMS > 6) Re: Right Fuel Tank Probe by > 7) Crossbow ADAHRS Manual by Robert R Pastusek > 8) Re: Crossbow ADAHRS Manual by > 9) Re: Crossbow ADAHRS Manual by "Jay Phillips" > 10) Re: Crossbow ADAHRS Manual by Steve Richard > 11) Re: Crossbow ADAHRS Manual by John Barrett <2thman1@gmail.com> 12) Re: Crossbow ADAHRS Manual by Robert R Pastusek > This digest is sent to you because you are subscribed to the mailing list >. For archives and help click http://mail.lancaironline.net:81/Lists/lml/List= .html LML website: http://www.lancaironline.net/maillist.html --_000_EBA67802C13CE448AE4EA386F38AA4CD7350ADCABATigerzaltanat_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

I hav= e never replied to any posting to the LML but I think this is one time I ca= n really offer some insight.   I have 17 years of military flying= experience  -- I flew as a door gunner on CH-46 Helicopters (800 hour= s) in the USMC and as loadmaster on C-130H2 in the US Air Force (2500 hours= ), with the latter being a pressurized aircraft.  Furthermore, I also = have another 2000 hours as pic in pressurized aircraft -- Beechcraft Dukes = and Lancair 4P's. 

 <= /o:p>

As part of my C130 qualification, I was re= quired to go through the pressurization chamber every 4 years.  The pu= rpose of the pressurization chamber is to identify our individual hypoxic s= ymptoms.  For some people it becomes confusion and other become nauseo= us.  We attended a ground school prior to entering the pressurization = chamber so that we would stay current on what hypoxia is, how it happens, a= nd what are the symptoms -- we didn't just walk into the pressurization cha= mber.  While in the pressurization chamber we were required to execute= repetitive tasks while they instructor drop the "aircraft" press= ure.  As I just wrote, confusion is the most common symptom for most p= eople but nausea can occur in others, too.  As we conducted our repeti= tive tasks it soon became clear that the simplest tasks were becoming incre= asingly difficult to concentrate and execute as well as remembering the nex= t task.  We had been trained to recognize the symptom so the next imme= diate thing to do was to go on oxygen.

 

Hypoxia is insidious so it = is very, very important that everyone who flies a pressurized aircraft unde= rstand their individual symptoms.  Ultimately, if you don't recognize = the symptom and take corrective action, you will lose consciousness.  = At the altitude this gentleman was flying he only had seconds= to recognize his symptoms before he was unable to think and act coherently= -- you won't get two minutes to recognize your hypoxic symptom.  = ; It's easy to speculate on what he did or didn't do but I suspect that he = wasn't aware of his own symptoms as they relate to hypoxia and he quickly w= ent into a state of confusion before he could make coherent decisions. = ; 

 

My recommendation is that EVERYONE who flies a pressurized= aircraft experience the pressurization chamber -- not just once -- but on = a regular interval because as you age, even if you are very fit, the onset = of hypoxia will happen quicker resulting in the symptoms will occurring soo= ner.  It’s imperative that a pilot know when they’re suffe= ring from hypoxia; otherwise, they’re rolling the dice when they fly = a pressurized aircraft at the flight levels.

 

Jay Hamilton

 

-= ----Original Message-----
From: Lancair Mailing List [mailto:lml@lancair= online.net]
Sent: Tuesday, September 09, 2014 5:00 AM
To: Lancair Ma= iling List
Subject: lml Digest #4737

&nb= sp;

      &n= bsp; Lancair Mailing List Digest #4737

 

1) Prop Boots

    by "jwil= less@itd-nc.com" <jwilless@itd-nc.com<= /span>>

2) 28,000 feet NO WHE= RE TO GO BUT DOWN

    = by PETER WILLIAMS <peterpawaviation@hotmail.c= om>

3) TIME TO PASSING= OUT

    by PETER WILL= IAMS <peterpawaviation@hotmail.com= >

4) 28,000 feet NO WHERE TO GO B= UT DOWN? #2

    by PET= ER WILLIAMS <peterpawaviation@hotmail.com>

5) FLIGHT LEVEL REALITY&= nbsp; OX MASK

    by P= ETER WILLIAMS <peterpawaviation@hotmail.com>

6) Re: Right Fuel Tank= Probe

    by <marv@lancair.net>

7) Crossbow ADAHRS Manual

&nbs= p;   by Robert R Pastusek <rpastusek@htii.com= >

8) Re: Crossbow ADAH= RS Manual

    by <<= a href=3D"mailto:marv@lancair.net">marv@lancair.net>

9) Re: Crossbow ADAHRS Manual

    by "Jay Phillips" <= jayph@fastairplane.net>

10) Re: Crossbow ADAHRS Manual

 = ;   by Steve Richard <steve@oasissoluti= ons.com>

11) Re: Crossb= ow ADAHRS Manual

    b= y John Barrett <2thman1@gmail.com>

12) Re: Crossbow ADAHRS Manual

    by Robert R Pastusek <rpastusek@htii.com>

 

This digest is sent to= you because you are subscribed to

&n= bsp; the mailing list <lml@lancaironline.net<= /a>>.

For archives and help click = http://mail.lancaironline.net:8= 1/Lists/lml/List.html

LML = website: http://www.lancaironline.net/mai= llist.html

= --_000_EBA67802C13CE448AE4EA386F38AA4CD7350ADCABATigerzaltanat_--