The Cessna 120-140 Association Forum

I've had intermittent issues with ADSB out failures over the past 5 years. It has been a long and complex nightmare and at times I was just about ready to pull my hair out. But, I finally got everything resolved. The journey included everything from a new voltage regulator, changing from a Uavionix Tail Beacon to a Stratus ESG...wire and switch replacement, cleaning up grounds, changing out anti-collision lights...ad nauseam.

A couple key (and elusive) points for those that may be experiencing similar issues:

1. Do NOT install a non-shielded USB charger in your airplane. It will blast the transponder.
2. If you have a secondary GPS antenna like I do for my GNC250 NAV/COM, and if it fails, it can blast all other GPS antennas including a Sentry or Stratus ADSB IN receiver and a WAAS antenna if you have a panel mounted ADSB/Transponder like the ESG.

Obviously there are other potential issues that may need to be addressed, but these were two biggies for me. Thought I would share.

Thank you Mike. Was the USB charger the type you plug into the cigarette lighter or hardwired? I've been using one that plugs into the cigarette lighter. As far as I know I haven't had any adsb-out issues. But I do randomly lose adsb-in. Seems to happen in the pattern more than anywhere else for some reason.
Josh

Hi Josh.

It was hardwired, panel mounted. This one from Aircraft Spruce.

https://www.aircraftspruce.com/catalog/ ... dapter.php