Return-Path: Sender: "Marvin Kaye" To: lml@lancaironline.net Date: Tue, 08 Feb 2005 11:53:57 -0500 Message-ID: X-Original-Return-Path: Received: from superman.pns.networktel.net ([216.83.236.232] verified) by logan.com (CommuniGate Pro SMTP 4.3c1) with ESMTP id 720221 for lml@lancaironline.net; Tue, 08 Feb 2005 08:45:45 -0500 Received-SPF: none receiver=logan.com; client-ip=216.83.236.232; envelope-from=walter@advancedpilot.com Received: from jor-l.pns.networktel.net (jor-l.pns.networktel.net [216.83.236.236]) by superman.pns.networktel.net (8.12.9/8.12.6) with ESMTP id j18DiE4u074390 for ; Tue, 8 Feb 2005 13:44:14 GMT (envelope-from walter@advancedpilot.com) Received: from [10.0.1.3] (216-107-97-170.wan.networktel.net [216.107.97.170]) by jor-l.pns.networktel.net (8.12.11/8.12.11) with ESMTP id j18Dgofe034202 for ; Tue, 8 Feb 2005 13:43:04 GMT (envelope-from walter@advancedpilot.com) Mime-Version: 1.0 (Apple Message framework v619.2) In-Reply-To: References: Content-Type: text/plain; charset=US-ASCII; format=flowed X-Original-Message-Id: <63616675445134d83a81ad808071db3e@advancedpilot.com> Content-Transfer-Encoding: 7bit From: Walter Atkinson Subject: Re: [LML] follow up on detonation, annual, backup instruments IV-P X-Original-Date: Tue, 8 Feb 2005 07:43:58 -0600 X-Original-To: "Lancair Mailing List" X-Mailer: Apple Mail (2.619.2) X-AntiVirus: checked by Vexira Milter 1.0.6; VAE 6.29.0.7; VDF 6.29.0.103 On Feb 7, 2005, at 10:13 PM, Dr Andre Katz wrote: we had one detonation for a milisecond at 18,000 feet despite rpm 2550 and 31 inches. I'm not positive what DID happen, but I'm 99.99% SURE it was NOT detonation. It was more likely and afterfire POP in the exhaust. You cannot hear detonation in an aircraft engine. Walter