Return-Path: Received: from pop3.olsusa.com ([63.150.212.2] verified) by logan.com (CommuniGate Pro SMTP 3.4.5) with ESMTP id 777730 for rob@logan.com; Sat, 12 May 2001 20:49:16 -0400 Received: from imo-r17.mx.aol.com ([152.163.225.71]) by pop3.olsusa.com (Post.Office MTA v3.5.3 release 223 ID# 0-71175U5500L550S0V35) with ESMTP id com for ; Sat, 12 May 2001 20:27:13 -0400 Received: from N934td@cs.com by imo-r17.mx.aol.com (mail_out_v30.10.) id k.f3.a4182bc (4424) for ; Sat, 12 May 2001 20:33:57 -0400 (EDT) From: N934td@cs.com Message-ID: Date: Sat, 12 May 2001 20:33:57 EDT Subject: Re: Am I wrong? To: lancair.list@olsusa.com MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-Mailing-List: lancair.list@olsusa.com Reply-To: lancair.list@olsusa.com <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> << Lancair Builders' Mail List >> <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> >> Greg Nelson <> Sounds like you have a good pitot/static system. The GPS altitude these days is derived from the 5th Satellite in the GPS array. Since the selective availability has been removed by the USAF, the GPS altitude is very accurate. Your transponder is set to 29.92 and the ground station decodes at the current QNH (altimeter setting). So if the area altimeter setting happens to be 29.92, you will transmit what your barometric altimeter shows. If they are both showing the same, you are in great shape, especially if accurate at high altitude (flight levels). Regards, Tony Durizzi >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> LML website: http://www.olsusa.com/Users/Mkaye/maillist.html LML Builders' Bookstore: http://www.buildersbooks.com/lancair Please send your photos and drawings to marvkaye@olsusa.com. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>