X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sun, 18 Sep 2011 12:32:55 -0400 Message-ID: X-Original-Return-Path: Received: from raven.ravenwebhosting.com ([72.9.254.67] verified) by logan.com (CommuniGate Pro SMTP 5.4.1) with ESMTPS id 5128005 for lml@lancaironline.net; Sat, 17 Sep 2011 20:27:36 -0400 Received-SPF: none receiver=logan.com; client-ip=72.9.254.67; envelope-from=paul@tbm700.com Received: from s01060017ee00b6c0.cg.shawcable.net ([174.0.115.173]:64258 helo=[192.168.15.6]) by raven.ravenwebhosting.com with esmtpsa (TLSv1:AES128-SHA:128) (Exim 4.69) (envelope-from ) id 1R55Dp-0005In-Ct for lml@lancaironline.net; Sat, 17 Sep 2011 20:27:02 -0400 From: paul miller Mime-Version: 1.0 (Apple Message framework v1084) Content-Type: multipart/alternative; boundary=Apple-Mail-1-843478660 Subject: Re: [LML] Left Main strut ear weld (Hydraulic Actuator) failure X-Original-Date: Sat, 17 Sep 2011 18:26:51 -0600 In-Reply-To: X-Original-To: "Lancair Mailing List" References: X-Original-Message-Id: X-Mailer: Apple Mail (2.1084) X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - raven.ravenwebhosting.com X-AntiAbuse: Original Domain - lancaironline.net X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - tbm700.com X-Source: X-Source-Args: X-Source-Dir: --Apple-Mail-1-843478660 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii Tony: I'm not an expert on the assembly but on my Legacy I don't believe = the loads for extension or retraction would cause a double weld break = like that. The hydraulic stopping loads are not supposed to be = transmitted to the weld. The spacer on the hydraulic actuator takes the = load when dropping the gear and the retraction loads stop when the = cutoff valve is struck as the wheel comes into the well. Even if both = welds were somehow inferior I can't see how those loads would be = transmitted to the welds. Is it possible the hydraulics put an = unintended load on that assembly either through adjustment issues or = some other reason or that there is some other friction? Glad it worked = out in your favour. I'm anxious to learn what caused this. Paul Calgary=20 On 2011-09-17, at 2:32 PM, Tony Moradian wrote: > On my last flight after i put the gear up, the left main indicator = light was still on. The tower confirmed that the left main was still = down. I orbited overhead and put the gear handle down.... Check the = actuator connection to main strut ear on your Legacies. > =20 > Tony Moradian > Legacy L2K330 > N444HL --Apple-Mail-1-843478660 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=us-ascii Tony: = I'm not an expert on the assembly but on my Legacy I don't believe the = loads for extension or retraction would cause a double weld break like = that. The hydraulic stopping loads are not supposed to be = transmitted to the weld. The spacer on the hydraulic actuator = takes the load when dropping the gear and the retraction loads stop when = the cutoff valve is struck as the wheel comes into the well. Even = if both welds were somehow inferior I can't see how those loads would be = transmitted to the welds. Is it possible the hydraulics put an = unintended load on that assembly either through adjustment issues or = some other reason or that there is some other friction? Glad it = worked out in your favour. I'm anxious to learn what caused = this.

Paul

Calgary

On = 2011-09-17, at 2:32 PM, Tony Moradian wrote:

On my last = flight after i put the=20 gear up, the left main indicator light was still on. The tower=20 confirmed that the left main was still down. I orbited overhead = and put the gear handle down.... Check the actuator connection to main strut = ear on=20 your Legacies.

Tony = Moradian
Legacy = L2K330
N444HL

= --Apple-Mail-1-843478660--