X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Tue, 02 Aug 2011 10:49:26 -0400 Message-ID: X-Original-Return-Path: Received: from wolverine.webiness.com ([65.61.103.66] verified) by logan.com (CommuniGate Pro SMTP 5.4.0) with ESMTPS id 5071547 for lml@lancaironline.net; Tue, 02 Aug 2011 10:17:47 -0400 Received-SPF: none receiver=logan.com; client-ip=65.61.103.66; envelope-from=brent@regandesigns.com DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=default; d=regandesigns.com; h=Received:Message-ID:Date:From:User-Agent:X-Accept-Language:MIME-Version:To:Subject:Content-Type; b=b3p6b8GYttUAZxrogC3xRYYMtibLccqE2HM9sZlLUwaXZsufgF8fu8OdnZZHvUvHpzULyMvtDKysdAr6C19s5VdAnBtyJjvob9j6sVsJ+YoxU+7zmBsXCUpxNjzXXeXo; Received: from 207-170-226-178.static.twtelecom.net ([207.170.226.178] helo=[192.168.1.101]) by wolverine.webiness.com with esmtpa (Exim 4.69) (envelope-from ) id 1QoFm0-00074W-4W for lml@lancaironline.net; Tue, 02 Aug 2011 07:16:44 -0700 X-Original-Message-ID: <4E3806E8.9060907@regandesigns.com> X-Original-Date: Tue, 02 Aug 2011 07:17:12 -0700 From: Brent Regan User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.2) Gecko/20040804 Netscape/7.2 (ax) X-Accept-Language: en-us, en MIME-Version: 1.0 X-Original-To: Lancair Mailing List Subject: Re: Re-doing my panel Content-Type: multipart/alternative; boundary="------------020009090701000706060705" X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - wolverine.webiness.com X-AntiAbuse: Original Domain - lancaironline.net X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - regandesigns.com This is a multi-part message in MIME format. --------------020009090701000706060705 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit In my "Glazed and Confused" presentation on "Glass Cockpits" I say that flying an aircraft with a non-certified, non TSO'ed glass standby (Dynon et al) is like jumping out of an airplane with only your main parachute and your standby plan is the fact you are wearing real soft socks. Jeff referred to one of my earlier posts where I said. "Regarding the question of backup systems, the more isolated your backup is from your primary, the less likely they will both be killed by the same event. If you wanted to guard against one of the windows in your house from being shattered by a miscreant juvenile with a penchant for throwing rocks you probably wouldn't put a second pane of glass behind the first as a single litho-projectile would destroy both. A spinning mass gyro is still the best standby for your EFIS system. They operate on different physics than the MEMS AHRS, they can, with internal or external battery, be independent of ship's power, they are familiar to all pilots and they are a cheap way to have TSO'ed gyro instrumentation." Here is the link for the full posting from the archives: http://mail.lancaironline.net:81/lists/lml/Message/45144.html?Language= Regards Brent Regan --------------020009090701000706060705 Content-Type: text/html; charset=us-ascii Content-Transfer-Encoding: 7bit In my "Glazed and Confused" presentation on "Glass Cockpits" I say that flying an aircraft with a non-certified, non TSO'ed glass standby (Dynon et al) is like jumping out of an airplane with only your main parachute and your standby plan is the fact you are wearing real soft socks.

Jeff referred to one of my earlier posts where I said.

"Regarding the question of backup systems, the more isolated your backup is from your primary, the less likely they will both be killed by the same event. If you wanted to guard against one of the windows in your house from being shattered by a miscreant juvenile with a penchant for throwing rocks you probably wouldn't put a second pane of glass behind the first as a single litho-projectile would destroy both.

A spinning mass gyro is still the best standby for your EFIS system. They operate on different physics than the MEMS AHRS, they can, with internal or external battery, be independent of  ship's power, they are familiar to all pilots and they are a cheap way to have TSO'ed gyro instrumentation."

Here is the link for the full posting from the archives:

http://mail.lancaironline.net:81/lists/lml/Message/45144.html?Language=

Regards
Brent Regan
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