Spent 6 hours tracking a ground fault on a CRJ-700 that turned out to be a single bad pin

Last month I had a plane throwing intermittent bus failure codes. Checked all the usual suspects, swapped 3 modules, even rewired a connector. Pulled my hair out from 8 AM to 2 PM before I found it. It was a pin in a cannon plug that looked fine but wasn't making contact under vibration. Has anyone else had a ghost fault that took way longer to find than it should have?

2 comments

2 Comments

daniel_rivera3d ago

I heard a buddy say canon plugs are basically designed to hide faults like that.

rileygonzalez3d agoMost Upvoted

Can you just swap them out and test the circuit again without the canon plugs?