X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Thu, 15 Mar 2012 08:34:34 -0400 Message-ID: X-Original-Return-Path: Received: from qmta15.emeryville.ca.mail.comcast.net ([76.96.27.228] verified) by logan.com (CommuniGate Pro SMTP 5.4.4) with ESMTP id 5442197 for lml@lancaironline.net; Wed, 14 Mar 2012 15:55:29 -0400 Received-SPF: pass receiver=logan.com; client-ip=76.96.27.228; envelope-from=j.hafen@comcast.net Received: from omta15.emeryville.ca.mail.comcast.net ([76.96.30.71]) by qmta15.emeryville.ca.mail.comcast.net with comcast id lXtu1i0021Y3wxoAFXuvqT; Wed, 14 Mar 2012 19:54:55 +0000 Received: from [10.0.1.5] ([76.104.242.96]) by omta15.emeryville.ca.mail.comcast.net with comcast id lXuu1i00X25W5K88bXuuqy; Wed, 14 Mar 2012 19:54:55 +0000 From: John Hafen Mime-Version: 1.0 (Apple Message framework v1257) Content-Type: multipart/alternative; boundary="Apple-Mail=_575CE19F-F818-473D-B704-41B1A28E3718" Subject: Re: [LML] Re: FW: Door seal 4P -- and blowing up over the Saw Tooth Mountains X-Original-Date: Wed, 14 Mar 2012 12:55:17 -0700 In-Reply-To: X-Original-To: "Lancair Mailing List" References: X-Original-Message-Id: X-Mailer: Apple Mail (2.1257) --Apple-Mail=_575CE19F-F818-473D-B704-41B1A28E3718 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii Amen to Bill's comments below. In my case, I had left too large a gap between the door and the fuselage = at the lower, forward point of the door. A 90 degree bend of the seal = (from horizontal to vertical) already causes considerable stretch in the = seal. And I had the "gap" between the door and the edge of the fuselage = ever so slightly too large. So after about 250 expansion / contraction = cycles, the rubber seal in that "corner" developed rubber fatigue, and = blew the hell up. Over the Saw Tooth Mountains at 17,500 are you = shitting me feet. It flat got our (My current wife and myself's) = attention. We did an emergency landing, got our wits about us, turned = up the radios, and headed home at 12,500 unpressurized. I now carry a couple of bags of Doritos Corn Chips, Nacho Cheese = flavored. If / when they blow up, I know its time to replace a seal. I also take Twinkies and red meat. I eat them while I fly. I want to = make sure I don't die because of an aircraft mishap. =20 Cheers, John Hafen N413AJ IVP On Mar 14, 2012, at 10:21 AM, Bill Hogarty wrote: Ralf Be careful determining what caused the leak. In my case, the valve stem = was chaffing as it passed through the door frame where I couldn't see = it. Expensive lesson. Regards, Bill H. On Mar 14, 2012, at 7:39 AM, Paul Bricker wrote: > Ralf, > For a repair procedure check the archives. Ron Galbraith post a detail = procedure and I believe others have as well. > Paul Bricker >=20 > From: > Reply-To: Lancair Mailing List > Date: Tue, 13 Mar 2012 08:26:29 -0400 > To: > Subject: [LML] FW: Door seal 4P >=20 > Dear subscribers, > =20 > I know we had this discussion several times already... At that time I = did not pay that close attention because I just replaced my inflatable = door seal with a new one and I thought I should be fine for a couple of = years. > =20 > Coming home last night I noticed the door seal pump cycling. The door = seal has been used for almost a year now with about 120 hrs on it. I = could hear it blowing from the door seal - I think it is coming from the = top of the door near my head from the seam where the door seal is glued = together. I will look at it closer tonight or tomorrow. > =20 > Is there a preferred method of repair (procedure/material) or should I = get a new one (probably 1500$ by now and a pain to do a nice job without = damaging the paint too much) > =20 > =20 > Thanks for your input > =20 > Ralf > =20 --Apple-Mail=_575CE19F-F818-473D-B704-41B1A28E3718 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=us-ascii Amen to Bill's comments = below.

In my case, I had left too large a gap between the door and = the fuselage at the lower, forward point of the door.  A 90 degree = bend of the seal (from horizontal to vertical) already causes = considerable stretch in the seal.  And I had the "gap" between the = door and the edge of the fuselage ever so slightly too large.  So = after about 250 expansion / contraction cycles, the rubber seal in that = "corner" developed rubber fatigue, and blew the hell up.  Over the = Saw Tooth Mountains at 17,500 are you shitting me feet.  It flat = got our (My current wife and myself's) attention.  We did an = emergency landing, got our wits about us, turned up the radios, and = headed home at 12,500 unpressurized.

I now carry a couple of bags of = Doritos Corn Chips, Nacho Cheese flavored.  If / when they blow up, = I know its time to replace a seal.

I also take Twinkies and red meat. =  I eat them while I fly.  I want to make sure I don't die = because of an aircraft mishap.  

Cheers,

John Hafen
N413AJ IVP




On Mar 14, = 2012, at 10:21 AM, Bill Hogarty wrote:

Ralf

Be careful = determining what caused the leak.  In my case, the valve stem was = chaffing as it passed through the door frame where I couldn't see it. =  Expensive lesson.

Regards, Bill = H.




On Mar 14, 2012, at 7:39 AM, = Paul Bricker <pbricker@att.net> = wrote:

Ralf,
For a repair procedure check the = archives. Ron Galbraith post a detail procedure and I believe others = have as well.
Paul Bricker

From: = <bronnenmeier@GROBSYSTEMS.COM<= /a>>
Reply-To: Lancair = Mailing List <lml@lancaironline.net>
Date: Tue, 13 Mar 2012 08:26:29 = -0400
To: <lml@lancaironline.net>
Subject: [LML] FW: Door seal = 4P

Dear subscribers,

 

I = know we had this discussion several times already... At that time I did = not pay that close attention because I just replaced my inflatable door = seal with a new one and I thought I should be fine for a couple of = years.

 

Coming home last night I noticed the door seal = pump cycling. The door seal has been used for almost a year now with = about 120 hrs on it.  I could hear it blowing from the door seal - = I think it is coming from the top of the door near my head from the seam = where the door seal is glued together. I will look at it closer tonight = or tomorrow.

 

Is = there a preferred method of repair (procedure/material) or should I get = a new one (probably 1500$ by now and a pain to do a nice job without = damaging the paint too much)

 

 

Thanks for your input

 

Ralf

 

= --Apple-Mail=_575CE19F-F818-473D-B704-41B1A28E3718--