Return-Path: Sender: (Marvin Kaye) To: lml Date: Mon, 14 Jul 2003 14:30:55 -0400 Message-ID: X-Original-Return-Path: Received: from apollo.email.starband.net ([148.78.247.132] verified) by logan.com (CommuniGate Pro SMTP 4.1b9) with ESMTP id 2474861 for lml@lancaironline.net; Mon, 14 Jul 2003 14:28:51 -0400 Received: from regandesigns.com (vsat-148-63-101-227.c002.t7.mrt.starband.net [148.63.101.227]) by apollo.email.starband.net (8.12.9/8.12.9) with ESMTP id h6EITpRi019294 for ; Mon, 14 Jul 2003 14:29:54 -0400 X-Original-Message-ID: <3F12F658.3080600@regandesigns.com> Disposition-Notification-To: Brent Regan X-Original-Date: Mon, 14 Jul 2003 11:28:40 -0700 From: Brent Regan User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.0.2) Gecko/20021120 Netscape/7.01 X-Accept-Language: en-us, en MIME-Version: 1.0 X-Original-To: Lancair Subject: Re: IV-P window blowout Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit IMHO it would be a good idea to try to compile some information on the window failures. There is NOT a good apparent reason why this is happening. We need the particulars of these incidents so as to develop a better theory for the failures. The goal would be to create a door inspection checklist to identify potential failures before they happen and to guide those building, repairing and maintaining doors. If you have information on window failures please post it. Useful information would include: Aircraft N number? TT to failure? Builder? Was the plane ground pressure tested? If so, to what differential pressure? If not ground tested, what was the highest flight differential pressure observed? What was the differential pressure at the time of the failure? OAT at the time of the failure? Altitude? Phase of flight (climb or cruise)? Was the door AD implemented? Where did the failure originate (corner, bolt hole, undetermined, etc.)? Questions about building the door: What solvents were used to clean the window? How was the window trimmed to size (saw or grinder)? Were the edges beveled or radiused? What grit abrasive was used to scuff the window for bonding? Were the holes in the window drilled with a negative rake bit? Was E-Glass or Carbon used for the inside layup? Please post any pictures of the failed window and any additional relevant information. If we get enough information to be useful I'll compile and present it at the Lancair Forum at OSH (if it is OK with Marv) as well as on the list. Regards Brent Regan 208 676 1922