X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Mon, 07 Feb 2011 12:31:57 -0500 Message-ID: X-Original-Return-Path: Received: from mail.glasair.org ([65.75.24.102] verified) by logan.com (CommuniGate Pro SMTP 5.4c2a) with ESMTPS id 4840763 for lml@lancaironline.net; Mon, 07 Feb 2011 08:38:08 -0500 Received-SPF: none receiver=logan.com; client-ip=65.75.24.102; envelope-from=BGray@glasair.org Received: from gray1 by mail.glasair.org (VisNetic.MailServer.v9.1.4.1) with ESMTP id QPS04631 for ; Mon, 07 Feb 2011 08:37:31 -0500 From: "Bruce" X-Original-To: "'Lancair Mailing List'" Subject: RE: [LML] LNC2 Hydraulic Landing Gear Pressure Switch Wear Issues X-Original-Date: Mon, 7 Feb 2011 08:37:29 -0500 X-Original-Message-ID: <1AEF640CD761441D99384B7D0BEBC21B@gray1> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_00D7_01CBC6A2.41C34930" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.2627 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5994 Importance: Normal In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_00D7_01CBC6A2.41C34930 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Several of our guys (including me) have junked our mechanical pressure switches and moved to solid state adjustable switches. http://www.automationdirect.com/adc/Search/Search?searchquery=PSD25-OP-5 800H &cmd=Search&fctype=adc.falcon.search.SearchFormCtrl&TxnNumber=-1 Bruce WWW.Glasair.org -----Original Message----- From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of Don Gordon Sent: Monday, February 07, 2011 7:45 AM To: lml@lancaironline.net Subject: [LML] LNC2 Hydraulic Landing Gear Pressure Switch Wear Issues I have recently replaced both my high pressure and low pressure switches in the hydraulic system for the landing gear. These switches began to have trouble providing a positive and discrete on/off event when the hydraulic pressure reached the prescribed limits. I began to hear strange crackling and static noises in my headset just prior to the hydraulic pump running (though it would just run for a fraction of a second to re-pressurize). These strange sounds in my headset began to occur longer and longer prior to the pump tripping on. I also began to notice some other odd electrical issues with the aircraft. Finally, I began to suspect these switches were faulty are replaced both of them. The problem went away and so did my electrical issues I experienced. ------=_NextPart_000_00D7_01CBC6A2.41C34930 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Several of our guys (including me) = have junked our mechanical pressure switches and moved to solid state = adjustable switches.

 

http://www.automationdirect.com/adc/Search/Search= ?searchquery=3DPSD25-OP-5800H&cmd=3DSearch&fctype=3Dadc.falcon.se= arch.SearchFormCtrl&TxnNumber=3D-1

 

 

Bruce
WWW.Glasair.org

-----Original = Message-----
From: Lancair Mailing = List [mailto:lml@lancaironline.net] On = Behalf Of Don Gordon
Sent: Monday, February = 07, 2011 7:45 AM
To: = lml@lancaironline.net
Subject: [LML] LNC2 = Hydraulic Landing Gear Pressure Switch Wear Issues

 

I have recently replaced both my high = pressure and low pressure switches in the hydraulic system for the landing gear.  = These switches began to have trouble providing a positive and discrete on/off = event when the hydraulic pressure reached the prescribed limits.  I began = to hear strange crackling and static noises in my headset just prior to the hydraulic pump running (though it would just run for a fraction of a = second to re-pressurize).  These strange sounds in my headset began to occur = longer and longer prior to the pump tripping on.  I also began to notice = some other odd electrical issues with the aircraft.  Finally, I began to suspect these switches were faulty are replaced both of them.  The = problem went away and so did my electrical issues I = experienced.

 

 

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