X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Mon, 04 Aug 2014 07:20:42 -0400 Message-ID: X-Original-Return-Path: Received: from mail-wi0-f180.google.com ([209.85.212.180] verified) by logan.com (CommuniGate Pro SMTP 6.0.9e) with ESMTPS id 7062228 for lml@lancaironline.net; Mon, 04 Aug 2014 03:14:21 -0400 Received-SPF: none receiver=logan.com; client-ip=209.85.212.180; envelope-from=bob@bmackey.com Received: by mail-wi0-f180.google.com with SMTP id n3so4397536wiv.13 for ; Mon, 04 Aug 2014 00:13:42 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:sender:date:message-id:subject:from :to:content-type; bh=4ESgJydX5mpNYw0Nas8hrDpQLJMCLw0eCDLszB7aD1M=; b=PeJlS7wnz1hq2xUYomzBQB0XeW8wqhzz7a33G61gQPmnawoB1SvEqK72Z0fokoehM5 RpqSznQ2OHyaX9C/6D72//4/DdemplTFTNm76OdP1PWmGtb3lkt+sW65hyby1dgaYUDb 06/RTdXcGq2QlyZXEQqbfbz+Puz7LhXNKF2GMV0gkFxwUtZJc8qG+9Z2yJ0It9pB3wtI +XubQgkXieJwLgeHDOKzk9ghU69gYVSsHTYR0afWyo9cEgDAeS3YLziQCscqiOKLeX2J w2X6e+I6Y6NQO3P1fSNr5fm2saWbYlj9Ij+Y+5yGjBtOdVqFaclnvp0xJvJxRUV+p9wd viRg== X-Gm-Message-State: ALoCoQlaO7he+Rbh7gY00bV7F0/BFJPH16P4RmOwR0ari+6Tm1BOj8C8PPN356GHvUcyePOwIQt9 MIME-Version: 1.0 X-Received: by 10.194.62.140 with SMTP id y12mr29009133wjr.27.1407136422052; Mon, 04 Aug 2014 00:13:42 -0700 (PDT) X-Original-Sender: bob@bmackey.com Received: by 10.216.36.8 with HTTP; Mon, 4 Aug 2014 00:13:42 -0700 (PDT) X-Originating-IP: [108.72.124.238] X-Original-Date: Mon, 4 Aug 2014 00:13:42 -0700 X-Google-Sender-Auth: 3eBCUcaPwiVh91C-sMOJZXmin9g X-Original-Message-ID: Subject: re: Gascolators and fuel lines. From: bob mackey X-Original-To: lml@lancaironline.net Content-Type: multipart/alternative; boundary=047d7bacb17696766004ffc87a21 --047d7bacb17696766004ffc87a21 Content-Type: text/plain; charset=UTF-8 Lots of people talk about the value of the gascolator in filtering out debris or catching water. But no one has mentioned that the gascolator can also increase risks. The system with a gascolator has one additional hose, two additional fittings, two additional gaskets, and a drain valve. All of those are potential failure points that could increase risk rather than reduce it. A leaky gasket can cause the engine-driven pump to suck air into the system resulting in fuel starvation. The same for an inadvertent drain opening. I don't have the numbers or data to support one side of the argument over the other. Anecdotally, I do know pilots that have had fuel system failures in flight that were caused by those last two gascolator defects. -bob mackey --047d7bacb17696766004ffc87a21 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Lots of people talk about the value of the gascolator in f= iltering out debris or catching water.=C2=A0
But no one has mentioned t= hat the gascolator can also increase risks. The system with a gascolator ha= s one additional hose, two additional fittings, two additional gaskets, and= a drain valve. All of those are potential failure points that could increa= se risk rather than reduce it. A leaky gasket can cause the engine-driven p= ump to suck air into the system resulting in fuel starvation. The same for = an inadvertent drain opening.=C2=A0

I don't have the numbers or data to support one sid= e of the argument over the other. Anecdotally, I do know pilots that have h= ad fuel system failures in flight that were caused by those last two gascol= ator defects.=C2=A0

-bob mackey
--047d7bacb17696766004ffc87a21--