X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Thu, 20 Sep 2007 19:36:59 -0400 Message-ID: X-Original-Return-Path: Received: from mail.stoel.com ([198.36.178.142] verified) by logan.com (CommuniGate Pro SMTP 5.1.12) with SMTP id 2342420 for lml@lancaironline.net; Thu, 20 Sep 2007 15:26:11 -0400 Received-SPF: pass receiver=logan.com; client-ip=198.36.178.142; envelope-from=JJHALLE@stoel.com Received: from gateway1.stoel.com ([198.36.178.141]) by mail.stoel.com (SMSSMTP 4.1.9.35) with SMTP id M2007092012252416357 for ; Thu, 20 Sep 2007 12:25:24 -0700 Received: from PDX-SMTP.stoel.com (unknown [172.16.103.137]) by gateway1.stoel.com (Firewall Mailer Daemon) with ESMTP id B6961AF083 for ; Thu, 20 Sep 2007 12:26:18 -0700 (PDT) Received: from PDX-MX6.stoel.com ([172.16.103.64]) by PDX-SMTP.stoel.com with Microsoft SMTPSVC(5.0.2195.6713); Thu, 20 Sep 2007 12:25:39 -0700 X-MimeOLE: Produced By Microsoft Exchange V6.5 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01C7FBBC.074B7407" Subject: RE: Reno-- the good, the bad and the ugly X-Original-Date: Thu, 20 Sep 2007 12:25:39 -0700 X-Original-Message-ID: <17E9FE5945A57A41B4D8C07737DB6072067BA05D@PDX-MX6.stoel.com> In-Reply-To: X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: Reno-- the good, the bad and the ugly Thread-Index: Acf7vAW/vjbru3xvQDmGDlP1lGbY4g== From: "Halle, John" X-Original-To: X-OriginalArrivalTime: 20 Sep 2007 19:25:39.0911 (UTC) FILETIME=[0759FD70:01C7FBBC] This is a multi-part message in MIME format. ------_=_NextPart_001_01C7FBBC.074B7407 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Responses below ________________________________ From: asw20747@aol.com [mailto:asw20747@aol.com]=20 Sent: Tuesday, September 18, 2007 5:13 PM To: lml@lancaironline.net Subject: Re: Reno-- the good, the bad and the ugly John: GREAT write-up!! =20 Glad to hear you and the airplane are OK. It is also REALLY encouraging to see how much support you got, especially at such a busy time as race week at Reno. If you don't mind, a couple of follow-up questions to you and/or the group: * What kind of Lancair were you flying?=20 =20 Legacy=20 * Are all Lancairs prone to this problem that, if I understand correctly, the pads wear out.... the brake bottoms out.... you loose ALL your fluid and braking? (!!!)=20 =20 If the pads wear very thin or, as in my case, disappear into the ether, the piston is able to protrude from its housing enough that the o-ring is exposed and there goes your fluid (and the o-ring). The consensus view is that the pads came off because they were allowed to get critically thin. I can't refute that but, based on prior experience, long before they got that thin, I should have been getting rivet gouges in the disc (which I did not get.) So, like most things in aviation it is a mystery to me .=20 * Is there anything you will do (or we could do) differently to keep this from happening?=20 =20 Obviously, check brake pads regularly. Cleveland has a gapper tool (piece of plastic) that you can use to determine if there is enough remaining pad. The night before in the middle of braking on landing, the brake failed completely but pumped right back up. The next morning I inspected carefully and there was no sign of hydraulic leakage so I suspected an air bubble in the system. Brakes worked fine on start, taxi and t/o. In retrospect, it was a sign. Biggest thing I did wrong was not shutting down as soon as I got off the runway. There was no need to test the system at that point and, with an obvious control problem there was just no decent reason to do what I did. Isn't hindsight neat? Thanks again for the report. Regards, Erik Larson ________________________________ Email and AIM finally together. You've gotta check out free AOL Mail ! ------_=_NextPart_001_01C7FBBC.074B7407 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable
Responses below

From: asw20747@aol.com = [mailto:asw20747@aol.com]=20
Sent: Tuesday, September 18, 2007 5:13 PM
To:=20 lml@lancaironline.net
Subject: Re: Reno-- the good, the bad = and the=20 ugly



John:

GREAT write-up!!  =

Glad=20 to hear you and the airplane are OK.  It is also REALLY encouraging = to see=20 how much support you got, especially at such a busy time as race week at = Reno.

If you don't mind, a couple of follow-up questions to you = and/or=20 the group:

*  What kind of Lancair were you flying? 
 
Legacy 

*  Are all Lancairs = prone to this=20 problem that, if I understand correctly, the pads wear out.... the brake = bottoms=20 out.... you loose ALL your fluid and braking? (!!!) 
 
If the pads wear very thin or, as in my case, disappear into = the ether,=20 the piston is able to protrude from its housing enough that the o-ring = is=20 exposed and there goes your fluid (and the o-ring).  The consensus = view is=20 that the pads came off because they were allowed to get critically = thin.  I=20 can't refute that but, based on prior experience, long before they got = that=20 thin, I should have been getting rivet gouges in the disc (which I did = not=20 get.)  So, like most things in aviation it is a mystery to me=20 . 

*  Is=20 there anything you will do (or we could do) differently to keep this = from=20 happening? 
 
Obviously, check brake pads regularly.  Cleveland has a = gapper=20 tool (piece of plastic) that you = can use to=20 determine if there is enough remaining pad.  The night before  = in the=20 middle of braking on landing, the brake failed completely but pumped = right back=20 up.  The next morning I inspected carefully and there was no sign = of=20 hydraulic leakage so I suspected an air bubble in the system.  = Brakes=20 worked fine on start, taxi and t/o.  In retrospect, it was a = sign. =20 Biggest thing I did wrong was not shutting down as soon as I got off the = runway.  There was no need to test the system at that point and, = with an=20 obvious control problem there was just no decent reason to do what I = did. =20 Isn't hindsight neat?

Thanks again for the=20 report.

Regards,

Erik Larson


Email and AIM finally together. You've gotta check out free AOL Mail!
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