As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) ELECTRICAL ARCHING IN THE VICINITY OF GPU.WHILE CONNECTING GPU ON ARRIVAL. MAINTENANCE ADVISED. AS PER MOC INSTRUCTION CARRIED OUT INSP OF EXT PWR RECPT FROM INSIDE A/C NO DAMAGE FOUND. EXT PWR RECEPT NEED REPECEPLAMENT. AC EXTERNAL POWER RECEPTACLE REPLACED AND TESTED SERVICEABLE IAW AMM 24-42-03.