Jump to content
Sign in to follow this  
Doug G.

Transponder Fail

Recommended Posts

I put an Airgizmo into my 2010 CTLS. The first flight went fine, now, sitting in the hangar I get a "Transponder Fail" warning on both Dynon displays. I know the cable for the transponder has a 90 degree turn in the two inch space between the transponder and the firewall. I am thinking this is the source of the problem. Has anyone seen this before?

Thanks

Share this post


Link to post
Share on other sites

Doug, Is your transponder working? (Can ATC see you ok). Are you talking dual Dynon Skyviews or the older Dynon EFIS and EMS? Do you have a GTX 330? GTX 327? Need a little more to go on here...

Share this post


Link to post
Share on other sites

Agree with Adam - need more info.

I have had transponder problems when I upgraded my Dynon. Somehow a wrong setting did not allow mode C to work. Tranponder worked fine.Once correct setting on Dynon it all worked.

Another time the center stack was not going all the way in, so the plug was not quite making full contact. Filed down the edges of the opening so it went in more and all was well again.

Original support brackets for transponder were too short which allowed the weight of the unit to break the center panel.

Went thru two center panels before this was discovered.

Is the Airgizmo the angled one ?

Share this post


Link to post
Share on other sites

It is a dual Skyview D-1000s and a GTX 330. I have not rolled the plane out of the hangar to try ATC. No, the airgizmo is straight.

Is there any way it could have to do with the connectors at the GPS? Doesn't seem like that should cause a transponder issue.

 

Share this post


Link to post
Share on other sites

This is odd. I double checked the plugs on the 696 and everything now seems fine. It was too windy and low ceilings today so I did not fly to check things. I am quite certain that the problem was communication with the Dynon units - meaning it would not display the transponder info on the screens. If it returns I suspect the data line from the back of the transponder. I seem to have treated the symptom - and will find out if it was a cure.

Share this post


Link to post
Share on other sites

Doug, given you changed no avionics hardware, simply just installed (added) an airgizmo dock you must have one of two things going on... Marginal intermittent wiring connection (since this started after everything was disturbed during the airgizmo dock install) or just a case of the Dynon Skyview needing a reboot to resync. If the problem persists I'd reseat connectors first. While disconnecting and reconnecting each connector do a quick visual scan of the pins to make sure none are pushed back into the connector body causing an intermittent connection.

Share this post


Link to post
Share on other sites

Adam, that was what I had gone out to the hangar to do. But, rechecking the connections on the GPS made the message go away. Is should have added that the display did not show the error until I put the Garmin in the dock. I had flown locally without it a couple of days before and all was fine. I need to do an upgrade on both my 696 and Dynons tomorrow (regular life took up time today) and then go fly and see if the issue returns.

Thanks for the help - I'll keep you posted.

Share this post


Link to post
Share on other sites

Doug,

 

I had a problem with my 496 data wire not transmitting. Traced it to the automotive plugs. Those things are for 18+ gauge, but the data wire had to be 22 or less... I recrimped and added a bead of solder, solved it!

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  

×