IFD 5 Series & IFD 4 Series Touch Screen GPS/NAV/COM

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UTC mismatch IFD540

Printed From: Avidyne
Category: Avidyne General
Forum Name: IFD 5 Series & IFD 4 Series Touch Screen GPS/NAV/COM
Forum Description: Topics on Avidyne's IFD 5 Series and IFD 4 Series Touch Screen GPS/NAV/COM
URL: http://forums.avidyne.com/forum_posts.asp?TID=2769
Printed Date: 07 Aug 2025 at 2:06pm
Software Version: Web Wiz Forums 12.01 - http://www.webwizforums.com

Topic: UTC mismatch IFD540

Posted By: larco
Subject: UTC mismatch IFD540
Date Posted: 06 Aug 2025 at 4:28pm

IFD540 is showing a flag UTC mismatch when turned on and shows an incorrect time the unit. after a reboot the flag goes away and the time is correct. was doing this after sitting for a couple of weeks, now every startup requires a reboot to get the proper time match. Is this a common problem?

Replies:

Posted By: nrproces
Date Posted: 07 Aug 2025 at 9:49am

This has been an issue for a long time. I have found it depends on the length of time, between sorties. If it is a couple of days, it doesn't happen, but more than that all bets are off...

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Sauce

Posted By: larco
Date Posted: 07 Aug 2025 at 11:03am

Thanks for the reply. A real disappointment for sure having to reboot during taxi on almost every flight now. I emailed AVI a while back and didn't get a response. I guess the next move is a call to support>

Posted By: HenryM
Date Posted: 07 Aug 2025 at 1:00pm

I seem to remember an issue like this was corrected in one of the software updates. I'm not sure if it was the most recent update now a year or ore ago, or the one before that. What is the firmware level in your IFD540?