X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Wed, 26 Sep 2007 16:31:53 -0400 Message-ID: X-Original-Return-Path: Received: from elasmtp-kukur.atl.sa.earthlink.net ([209.86.89.65] verified) by logan.com (CommuniGate Pro SMTP 5.1.12) with ESMTP id 2353377 for lml@lancaironline.net; Wed, 26 Sep 2007 14:24:30 -0400 Received-SPF: none receiver=logan.com; client-ip=209.86.89.65; envelope-from=colyncase@earthlink.net DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=dk20050327; d=earthlink.net; b=ryawEeDH+w1HjiX48LJAEIaBT0SnN0sbUlFfw7umkiK/Fx5/0QixlxO4cNc6EcgP; h=Received:Message-ID:From:To:References:Subject:Date:MIME-Version:Content-Type:X-Priority:X-MSMail-Priority:X-Mailer:X-MimeOLE:X-ELNK-Trace:X-Originating-IP; Received: from [216.57.118.64] (helo=ccaselt2) by elasmtp-kukur.atl.sa.earthlink.net with asmtp (Exim 4.34) id 1IabY8-00021a-K5 for lml@lancaironline.net; Wed, 26 Sep 2007 14:23:52 -0400 X-Original-Message-ID: <05f701c8006a$a06758c0$8c721c0c@nvidia.com> From: "Colyn Case on earthlink" X-Original-To: "Lancair Mailing List" References: Subject: Re: [LML] Airspeed Indicator Consult X-Original-Date: Wed, 26 Sep 2007 14:25:32 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_05F4_01C80049.18A26E50" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3138 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3138 X-ELNK-Trace: 63d5d3452847f8b1d6dd28457998182d7e972de0d01da940fe0eb851f1f57b0203f9f87ecf8c02ad350badd9bab72f9c350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 216.57.118.64 This is a multi-part message in MIME format. ------=_NextPart_000_05F4_01C80049.18A26E50 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable questions I would have: 1) is static side correct? could it be seeing higher than ambient = pressure (via a leak through some plumbing) causing the gauge to see a = lower differential. 2) is there a leak which is only activated when the plane is moving? If I were debugging I would: a) block off everything on the pitot side except the a/s indicator = itself (aoa, gear lockout etc.) b) temp attach static side of indicator to cabin and don't pressurize c) try a different indicator ------=_NextPart_000_05F4_01C80049.18A26E50 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
questions I would have:
1) is static side correct?   = could it be=20 seeing higher than ambient pressure (via a leak through some plumbing) = causing=20 the gauge to see a lower differential.
2) is there a leak which is only = activated when the=20 plane is moving?
 
If I were debugging I = would:
a) block off everything on the pitot = side except=20 the a/s indicator itself (aoa, gear lockout etc.)
b) temp attach static side of indicator = to cabin=20 and don't pressurize
c) try a different = indicator
 
------=_NextPart_000_05F4_01C80049.18A26E50--