Watch out for the corrosion under the cannon plug on the #2 GPS antenna, found mine during a ramp check at KBOS

Grant Fisher · 2026-10-13T20:45:04.203218+00:00

I was doing a routine ramp check at KBOS on a G550 and spotted green corrosion under the seal of the #2 GPS antenna cannon plug that was so bad it had eaten through two pins and the whole thing was pinned at fault, so I cleaned it with contact cleaner, repinned it, and sealed it back up, but has anyone else seen this happen way more on the #2 than the #1, or is that just me overthinking a coincidental pattern?

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Watch out for the corrosion under the cannon plug on the #2 GPS antenna, found mine during a ramp check at KBOS | Avionics Technicians - Chatter Central