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

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FLTA

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=1591
Printed Date: 15 May 2025 at 1:02am
Software Version: Web Wiz Forums 12.01 - http://www.webwizforums.com

Topic: FLTA

Posted By: Warrenwhis
Subject: FLTA
Date Posted: 30 Aug 2018 at 6:46am

My IFD540 says the FLTA is inhibited. I have no aural callouts. Oskrypuch suggested I post about an audio connection that I probably need. Can someone help me with this?

Replies:

Posted By: Gring
Date Posted: 30 Aug 2018 at 7:47am

You need to provide some additional information. FLTA is inhibited in certain areas such as the exclusion areas around an airport. It will be inhibited if the GPS signal is lost. You need to have it turned on in the user settings.

Perhaps you can provide some additional information.

Posted By: Warrenwhis
Date Posted: 30 Aug 2018 at 9:43am

I have had this unit and flown withit for over 2 yeats. Never had a call out. All thesettings for TA and FLTS are turned on

My nav/data, obstacles and terrain are current

Posted By: chflyer
Date Posted: 30 Aug 2018 at 1:26pm

That would seem to indicate a wiring problem. Do you get the 500' call-out (is independent of TA/FLTA setting)?

-------------
Vince

Posted By: Warrenwhis
Date Posted: 30 Aug 2018 at 5:04pm

i have never had a 500 ft callout

Posted By: Cruiser
Date Posted: 30 Aug 2018 at 6:11pm

from the install manual..... If the unit being replaced was not a TAWS-enabled device, or if the TAWS Audio output signals were not already connected to the aircraft audio panel(s), then some additional wiring will be required from the IFD5XX/4XX tray to the aircraft audio panel(s) as identified in Section 6.11.1 in order to supply IFD5XX/4XX terrain alerting audio (FLTA functionality) and TOD chime to the headsets.

Posted By: Warrenwhis
Date Posted: 31 Aug 2018 at 6:48am

thank you I will takr this info to my avionics shop that did the install

Posted By: DavidBunin
Date Posted: 01 Sep 2018 at 6:18am

Last year I had a flight where I was getting repeated FLTA Unavailable warnings while cruising at high altitude (17,500 I think). It was mentioned that the fault was resolved in the new software, which I have not yet installed.

Whatever caused it must have been spurious in the GPS, because I haven't seen it again.

There was a thread about it here, somewhere.

Posted By: rolfe_tessem
Date Posted: 01 Sep 2018 at 9:19am

If you replaced a Garmin 530, 99% of Garmin 530's did not have audio wired (unless they had TAWS, which maybe a few air carrier types did). Your shop needs to connect one wire to enable audio...

Rolfe

Posted By: DavidBunin
Date Posted: 02 Sep 2018 at 12:40pm

Technically it is three connections. There is a twisted wire pair (HI/LO) for audio inside a grounded shield. But visually, yes it looks like one wire.