As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MULTIPLE ELECTRICAL FLUCTUATIONS EXPERIENCED IN FLIGHT. ARCING DAMAGE FOUND ON BOTH GROUND STUDS AND ATTACHING HARDWARE. REPLACED NR 1 ENGINE GENERATOR FEEDER CABLE GROUND STUDS AND SELF LOCKING NUTS REF GNMM 2-0-7-002. BONDING CHECKS GOOD. AIRCRAFT OK FOR SERVICE.