As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING GROUND OPERATION IT WAS NOTED THAT THE AIRCRAFT WOULD NOT ACCEPT EXTERNAL GOUND POWER, TROUBLESHOOTING OF THE EXTERNAL POWER ELECTRICAL SYSTEM FOUND THE EXTERNAL POWER GROUND LEAD TO AIRCRAFT RIB TO BE AT FAULT. CARRIED OUT GROUND (G45) REPAIR AND REPLACEMENT IAW GULFSTREAM SB 100-24-304 AND AC43-13-2B. SYSTEM TESTED AND AIRCRAFT RETURNED TO SERVICE.