DFC90/DFC100 Digital Autopilot - Approach Roll Steering

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Approach Roll Steering

Printed From: Avidyne
Category: Avidyne General
Forum Name: DFC90/DFC100 Digital Autopilot
Forum Description: Topics on the Avidyne DFC Digital Autopilots
URL: https://avidynelive.com/forum_posts.asp?TID=2134
Printed Date: 26 Mar 2026 at 10:42am
Software Version: Web Wiz Forums 12.07 - https://www.webwizforums.com

Topic: Approach Roll Steering

Posted By: daveS
Subject: Approach Roll Steering
Date Posted: 05 Jan 2021 at 7:17am

In IFD software 10.2.3.1 there was a new setting on the Main System Config page called 'Appr Roll Steer'. The default is enabled. I believe this is the default to emulate the GNS. The techsupport article description ( https://techsupport.avidyne.com/kb/article/284-approach-roll-steering-setting-on-main-system-config-page/" rel="nofollow - https://techsupport.avidyne.com/kb/article/284-approach-roll-steering-setting-on-main-system-config-page/ )is a bit unclear to me:

Approach Roll Steering
Enabled: Default setting.
Disabled: Invalidates GPSS Roll Steering output during FMS approaches. Should be disabled for autopilots that fly GPSS during approach mode to force the autopilots to switch to Left/Right deviation data.

I have dual IFD440's and a DFC90. It would seem I should disable this. Right?

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dave