Sender: <marv@lancaironline.net> (Marvin Kaye)
To: lml@lancaironline.net
Date: Mon, 01 Dec 2003 19:45:04 -0500
Message-ID: <redirect-2779749@logan.com>
From: "Ted Stanley" <ted@vineyard.net>
Subject: Safety Bulletin - Chelton EFIS 
MIME-Version: 1.0
Content-Type: text/plain;
	charset="iso-8859-1"
Content-Transfer-Encoding: 7bit

Thought I'd pass this story along knowing that a number of you use this
system. Perhaps most owners are already aware of it.

Ted Stanley


Safety Bulletin Addresses Chelton Synthetic-vision EFIS

A software flaw in the FlightLogic EFIS developed by Chelton Flight Systems
gives pilots dangerously misleading guidance when flying certain nonstandard
departure and missed-approach procedures, according to the FAA. As a result,
Chelton has issued a pair of Service Bulletins (150-04592, Rev. A and
150-045973, Rev. A) to address the discrepancies in the software, which
mainly affect instrument procedures with climb requirements of greater than
300 feet per nautical mile. Chelton expects to release a software update to
FlightLogic users in January that the company said would eliminate the
design errors. In the meantime, pilots must take extra precautions to be
sure they comply with all published departure and missed-approach
procedures. Used extensively by operators involved in the Alaska Capstone
program, FlightLogic is the first EFIS certified with synthetic-vision and
highway-in-the-sky guidance cues. Chelton Flight Systems is based in Boise,
Idaho.