Had a D-sub pinout epiphany after 12 years in the hangar

I spent years chasing intermittent faults on a regional jet's flight control panel, always swapping out the whole connector assembly when readings went wonky. Last month I found the real culprit: I had been using the wrong crimp tool die for the #20 contacts, leaving them just loose enough to shift under vibration after a few hundred cycles. Has anyone else had a similar moment where the fix was in your hand the whole time, not in the harness?

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matthew_baker16d ago

Different tools totally matter, no argument there, but I've seen plenty of loose pins come down to the backshell not being torqued right or the strain relief doing nothing after a hot summer. That die issue could easily be a symptom of a bigger training gap where nobody checks the crimp pull test on the line. Maybe it's just my experience, but I'd still trace every joint before blaming the die, since vibration finds whatever is weakest first.