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That ground loop issue on a G1000 took me 6 hours to track down
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xena3731mo ago
Maybe loose fasteners on the antenna ground plane cause a lot of those phantom issues.
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charlienelson1mo ago
Honestly, I used to think stuff like that was just forum lore, but @xena373 calling out loose fasteners on the antenna ground plane really got me. I had a weird intermittent radio dropout that drove me nuts for weeks, replaced the whole head unit and nothing fixed it. Then I remembered reading this exact thing, went out and snugged up the ground plane bolts on the belly. Problem vanished completely. Made me feel like a real dummy for not trusting the simple stuff first.
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the_piper1mo ago
Six hours on a ground loop? That's not even a real problem, that's just the plane being sassy. I bet half that time was you staring at the wiring diagram going "but it worked yesterday." Ground loops are the universe's way of saying "you didn't bond that panel screw properly, Karen." At least you didn't have to pull the whole avionics stack out, that's when they get really personal.
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