X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Mon, 07 Jun 2010 13:24:09 -0400 Message-ID: X-Original-Return-Path: Received: from a2s34.a2hosting.com ([74.126.18.170] verified) by logan.com (CommuniGate Pro SMTP 5.3.7) with ESMTPS id 4339104 for lml@lancaironline.net; Mon, 07 Jun 2010 12:43:38 -0400 Received-SPF: pass receiver=logan.com; client-ip=74.126.18.170; envelope-from=lorn@dynacomm.us DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=default; d=dynacomm.us; h=Received:From:Content-Type:Content-Transfer-Encoding:Subject:Date:Message-Id:To:Mime-Version:X-Mailer; b=EAfQ5WGQaPpXMRGpSiHyL2woBoz6EJ5tIzZH5FNnutwDaq/iscxhQ2ttNJQX4oQK17uR9VJjbATI6wv7aNTQGOHMi9PR3wtOIG4dT2/O79hzm+q9wO+COLHws17qG5gR; Received: from c-68-41-117-55.hsd1.mi.comcast.net ([68.41.117.55] helo=[192.168.1.130]) by a2s34.a2hosting.com with esmtpa (Exim 4.69) (envelope-from ) id 1OLfPg-0007iW-Qc for lml@lancaironline.net; Mon, 07 Jun 2010 12:43:01 -0400 From: Lorn H Olsen Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Subject: Re: UV Exposure in Cockpit through Acrylic Canopies X-Original-Date: Mon, 7 Jun 2010 12:42:57 -0400 X-Original-Message-Id: <37B55999-5DF3-433B-803B-6E1E08A83CD1@dynacomm.us> X-Original-To: Lancair List Mime-Version: 1.0 (Apple Message framework v1081) X-Mailer: Apple Mail (2.1081) X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - a2s34.a2hosting.com X-AntiAbuse: Original Domain - lancaironline.net X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - dynacomm.us Jeff, I have flown my 320 for up to 5.5 hours, at altitude, with no shirt and = in the sun. I have never been able to feel any effect of the sun. I am a fair skinned Dane-German but tan easily. Sun exposure, if not = excessive, is good for you. My canopy has just the slightest of tint. see: http://www.dynacomm.us/lorn/ Lorn > From: "Jeffrey Liegner, MD" > Date: June 5, 2010 10:10:22 PM EDT >=20 > ... >=20 > I noticed the other day that my transition lenses were ~half tinted = while flying in some sun inside my air conditioned LIVP at FL210, so UV = must be penetrating the thick acrylic canopy material. This is not the = case inside a car. >=20 > Being a fair skinned irish-german, I slather 85+ SPF Neutrogenia = lotion on regularly and daily, but always felt that inside the cockpit = (or car) that my exposure was minimum. This suggests that long flights = might justify reapplication of sun block. >=20 > Manufactures of acrylic canopies can choose to add UV filters to = enhance the filtration above 300nm. >=20 > Just sharing an observation to my fellow Lancair pilots. >=20 > Jeff L -- Lorn H. 'Feathers' Olsen, MAA, ASMEL, ASES, Comm, Inst DynaComm, Corp., 248-345-0500, mailto:lorn@dynacomm.us LNC2, FB90/92, O-320-D1F, 1,700 hrs, N31161, Y47, SE Michigan