DFC90/DFC100 Digital Autopilot - Loose knob on DFC 90

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Loose knob on DFC 90

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=2566
Printed Date: 26 Mar 2026 at 2:12pm
Software Version: Web Wiz Forums 12.07 - https://www.webwizforums.com

Topic: Loose knob on DFC 90

Posted By: Qwerty123
Subject: Loose knob on DFC 90
Date Posted: 28 Aug 2023 at 4:07am

My vertical speed knob fell off.

I put it back on but it is loose.

It appears to have a very small set screw which is missing.

Unable to locate it.

Does anyone know the size of the set screw or a source for a replacement knob.

I guess I could buy a small one and drill an appropriate hole in the know to make it work but I would prefer the first two options.