X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sat, 09 Nov 2013 13:04:29 -0500 Message-ID: X-Original-Return-Path: Received: from mail-ie0-f169.google.com ([209.85.223.169] verified) by logan.com (CommuniGate Pro SMTP 6.0.7) with ESMTPS id 6582510 for lml@lancaironline.net; Fri, 08 Nov 2013 20:42:28 -0500 Received-SPF: pass receiver=logan.com; client-ip=209.85.223.169; envelope-from=weinsweigd@gmail.com Received: by mail-ie0-f169.google.com with SMTP id ar20so4681928iec.28 for ; Fri, 08 Nov 2013 17:41:54 -0800 (PST) X-Received: by 10.50.128.137 with SMTP id no9mr4784321igb.36.1383961314457; Fri, 08 Nov 2013 17:41:54 -0800 (PST) X-Original-Return-Path: Received: from [10.146.8.74] (mobile-198-228-225-247.mycingular.net. [198.228.225.247]) by mx.google.com with ESMTPSA id hv5sm6113402igb.9.2013.11.08.17.41.50 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Fri, 08 Nov 2013 17:41:53 -0800 (PST) Subject: TKS and ice From: David Weinsweig Content-Type: text/plain; charset=us-ascii X-Mailer: iPhone Mail (11A501) X-Original-Message-Id: <38BFE628-AA92-43FF-9ACE-90DE49DA11E8@gmail.com> X-Original-Date: Fri, 8 Nov 2013 20:41:50 -0500 X-Original-To: Lancair Mailing List Content-Transfer-Encoding: quoted-printable Mime-Version: 1.0 (1.0) I cannot say with certainty whether it was light or moderate ice or worse as= the only ice that I picked up in 20 minutes descending through continuous i= mc with tops at 17000 to ceiling of 2000 feet(all of which below freezing) w= as 1/4" on my landing light lenses which I only noticed after putting the pl= ane away. However, a Mooney in the same vicinity was in serious trouble and c= ould not maintain altitude though fortunately emerged unscathed.=20 My TKS system just works. I have it installed on wings and HStab with a slin= ger ring on the prop which also bathes the windshield and fuselage including= presumably the air intake. It is important to get it working before enteri= ng the moisture. I would not want to hang out indefinitely in icing but for i= nadvertent and the need to get through layers it just seems to work though I= am always looking at the wings with a heightened level of awareness.=20 I have never used boots but the few folks that I have talked to who have had= experience with TKS and boots on the same m/m particularly one very knowled= gable p210 pilot/instructor seem to far prefer TKS.=20 I have no experience with Thermawing but intuitively I have trouble believin= g that it works as well as TKS.=20 Obviously the downsides to TKS are limited volume though I have never run ou= t, fluid weight(heavier than fuel), potential limited availability at airpor= ts, and it's messy constantly "weeping"(hence the nickname weeping wing) and= leaving "puddles" on the hangar floor.=20 FWIW David Weinsweig N750DW TKS Deiced Propjet For those that have either TKS or thermawing on their airplanes have you eve= r been in anything more than trace or light icing? If so how did the system= and the airplane perform? The key with boots or any system that cycles if you're not able to regain so= me of the airspeed loss that occurred before the boots cycled it's time to g= o down.