X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Wed, 19 Aug 2009 18:03:25 -0400 Message-ID: X-Original-Return-Path: Received: from fed1rmmtao106.cox.net ([68.230.241.40] verified) by logan.com (CommuniGate Pro SMTP 5.2.16) with ESMTP id 3818565 for lml@lancaironline.net; Wed, 19 Aug 2009 16:18:31 -0400 Received-SPF: none receiver=logan.com; client-ip=68.230.241.40; envelope-from=bobaloof16@cox.net Received: from fed1rmimpo02.cox.net ([70.169.32.72]) by fed1rmmtao106.cox.net (InterMail vM.8.00.01.00 201-2244-105-20090324) with ESMTP id <20090819201755.BTPR21192.fed1rmmtao106.cox.net@fed1rmimpo02.cox.net> for ; Wed, 19 Aug 2009 16:17:55 -0400 Received: from RCGPC ([68.106.51.63]) by fed1rmimpo02.cox.net with bizsmtp id WLHv1c0011MoxFo04LHvrm; Wed, 19 Aug 2009 16:17:55 -0400 X-VR-Score: 20.00 X-Authority-Analysis: v=1.0 c=1 a=p_HJail-TjAA:10 a=8pif782wAAAA:8 a=Ia-xEzejAAAA:8 a=fLuM78UsAAAA:8 a=C_IRinGWAAAA:8 a=4AZZMesXpaoKSF2-uLMA:9 a=vogdi2_39psuRB67WPwA:7 a=UiavvJnWi3TfoE7ghzuPnziAjM0A:4 a=EzXvWhQp4_cA:10 a=3jk_M6PjnjYA:10 a=si9q_4b84H0A:10 a=UoHBGJUBq0zQDfEW:21 a=zMu7zjvZeIJRKvWT:21 a=yMhMjlubAAAA:8 a=SSmOFEACAAAA:8 a=ELYz05hneOytAij46oUA:9 a=eCT8h6dp8wl4AWVZFb4A:7 a=8H7MMcTS3mVgNL2X9PM2VymsPncA:4 X-CM-Score: 0.00 From: "Bob Rickard" X-Original-To: "'Lancair Mailing List'" References: In-Reply-To: Subject: RE: [LML] Re: What may have caused Kaboom at 16.5 X-Original-Date: Wed, 19 Aug 2009 13:17:56 -0700 X-Original-Message-ID: <013a01ca210a$23ee9bb0$6bcbd310$@net> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_013B_01CA20CF.778FC3B0" X-Mailer: Microsoft Office Outlook 12.0 Thread-Index: Acog8CR+XoYhdhRLT26kTUoUzXV5+gAGfXHQ Content-Language: en-us This is a multi-part message in MIME format. ------=_NextPart_000_013B_01CA20CF.778FC3B0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable =20 Do what the old guys did, and what they do in the altitude chamber - use = a balloon or a latex glove. Tie it closed at SLP (or at 8k cabin = pressure), and if you lose cabin pressure it gets BIG! And no chips to get in your = eyes while screaming downhill. And don't worry either. Unless you are = above FL250, your time of useful consciousness (TUC) is plenty long enough to = get your mask on and O2 going (http://en.wikipedia.org/wiki/Time_of_Useful_Consciousness ). I = wouldn't fly above that high because you are very susceptible to the bends if you have rapid-D above that height as well. I in fact had rapid-D at 210 a = few months back (accidentally hit the door seal switch) and my training in = the chamber over the years finally paid off! =20 The guys up at RDD Enterprises have a guy who is really good at filling = in this exact part in the IV-P door, you might want to get in touch with = them (in Redmond). =20 Bob Rickard (current F-16 guy too) L-IVP =20 =20 From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of marv@lancair.net Sent: Wednesday, August 19, 2009 10:12 AM To: lml@lancaironline.net Subject: [LML] Re: What may have caused Kaboom at 16.5 =20 Posted for John Hafen : As I looked at the seal and its distance to the door frame at various places around the frame, I could see that it was fairly close all around (1/8 = to 1/4 inch) except for where it blew (right by the stick). In that area, there was a gap of 1/2 inch to perhaps 5/8ths inch. The thought is = that as the seal rounds the 90 degree corner, it is already =B3stretched=B2 = (because of the 90 degree bend) and has less expansion capacity than it would in a straight or flat area. So the area was raised (see below) to narrow = the gap, that hopefully will support the new $450 seal better (limit the expansion required). =20 Meanwhile, based on posts from many of you, I=B9ve decided to = permanently hang a bag of corn chips from the middle of the Rosen Sun Visors. If I ever lose cabin pressure again, I anticipate the bag will blow, providing both an audible and visual warning of cabin depressurization (my father=B9s = idea, actually). I=B9m trying to figure out a way to have the exploding corn = chip bag automatically turn on the emergency oxygen supply, but I haven=B9t figured that our out quite yet. =20 Cheers =20 John Hafen N413AJ IV (soon to be P) 160 hours ------=_NextPart_000_013B_01CA20CF.778FC3B0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

 

Do what the old guys did, and what they do in the = altitude chamber - use a balloon or a latex glove.=A0 Tie it closed at SLP (or at = 8k cabin pressure), and if you lose cabin pressure it gets BIG! And no chips to = get in your eyes while screaming downhill.=A0=A0=A0 And don't worry either.=A0 = Unless you are above FL250, your time of useful consciousness (TUC) is plenty long = enough to get your mask on and O2 going (http://en.wikipedia.org/wiki/Time_of_Useful_Consciousness ).=A0 I = wouldn't fly above that high because you are very susceptible to the bends if you = have rapid-D above that height as well.=A0=A0 I in fact had rapid-D at 210 a = few months back (accidentally hit the door seal switch) and my training in the = chamber over the years finally paid off!

 

The guys up at RDD Enterprises have a guy who is really = good at filling in this exact part in the IV-P door, you might want to get in = touch with them (in Redmond).

 

Bob Rickard (current F-16 guy too)

L-IVP

 

 

From:= Lancair = Mailing List [mailto:lml@lancaironline.net] On Behalf Of = marv@lancair.net
Sent: Wednesday, August 19, 2009 10:12 AM
To: lml@lancaironline.net
Subject: [LML] Re: What may have caused Kaboom at = 16.5

 

Posted for John Hafen <j.hafen@comcast.net>:

 As I looked at the seal and its distance to the door frame at = various places
 around the frame, I could see that it was fairly close all around = (1/8 to
 1/4 inch) except for where it blew (right by the = stick).  In that area,
 there was a gap of 1/2 inch to perhaps 5/8ths inch.  The thought is that as
 the seal rounds the 90 degree corner, it is already = =B3stretched=B2 (because of
 the 90 degree bend) and has less expansion capacity than it would = in a
 straight or flat area.  So the area was raised (see = below) to narrow the
 gap, that hopefully will support the new $450 seal better (limit = the
 expansion required).
 
 Meanwhile, based on posts from many of you, I=B9ve decided to = permanently hang
 a bag of corn chips from the middle of the Rosen Sun Visors.  If I ever lose
 cabin pressure again, I anticipate the bag will blow, providing = both an
 audible and visual warning of cabin depressurization (my = father=B9s idea,
 actually). I=B9m trying to figure out a way to have the exploding = corn chip
 bag automatically turn on the emergency oxygen supply, but I = haven=B9t figured
 that our out quite yet.
 
 Cheers
 
 John Hafen
 N413AJ  IV (soon to be P) 160 hours

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