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That string of 4 ground faults in one shift at DFW last month
I was pulling a G650 through a Phase 4 check at DFW and hit 4 separate ground faults on the same LRU tray in 6 hours. Each time I re-terminated, checked the harness, and swapped the module, it still tripped until I found a tiny nick in the shield drain wire near the backshell. Has anyone else had a run of bad luck like that on a single bird?
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nancy2752d ago
Man, that sounds like a nightmare! A buddy of mine had a similar thing on a Hawker where the same ground fault kept popping up no matter what he did. He finally found a tiny piece of metal shaving stuck under the backshell that was just barely touching the wrong pin, took him almost two whole shifts to track it down. Stuff like that really makes you double check every little thing.
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johnson.ryan2d ago
A couple years ago I would've said a single wire nick couldn't cause four separate faults in one shift. Then I had a Gulfstream where the drain wire on a LRU tray had a hairline break inside the boot. Every time I moved the harness it made contact then lost it again. Drove me nuts for a full day until I borrowed a borescope and saw the actual fracture. Changed my whole approach to chasing intermittent faults.
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