My instructor said to always trust the built-in test on the G1000, but that cost me a full day.

I had a GNS 430 showing a weird nav flag, and the BIT said it was fine. Turned out a corroded pin in the back connector was the real issue. Anyone else run into BIT giving a false pass?

3 comments

3 Comments

claire_davis311mo ago

Yeah, my buddy had something like that happen with his GTN 650. The thing kept dropping signal, but the built-in test came back clean every single time. He was about to ship the whole unit out for a super expensive bench check. Then his mechanic, just on a hunch, wiggled the tray and the data port cable. Found a bunch of green fuzz on one of the pins, corrosion from getting wet somehow. Cleaned it up and it was perfect. Makes you wonder what the BIT is actually checking, you know?

jamief671mo ago

Reminds me of a guy who fixed his radio static by just reseating a fuse.

daniel_gonzalez1mo ago

Cleaning the antenna connector fixed my intermittent GPS too.

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