As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU GENERATOR FEEDER WIRE DAMAGE, CAUSED SHORT CIRCUIT TO GROUND, RESULTING ARCHING TO WIRE AND CLAMP AT STA 1788 RIGHT. REPLACED THE FEEDER WIRE FROM THE NEARBY SPLICE TO APU SHROUD CONNECTOR D 4016J, AND CLAMP. OPS CHECKED GOOD IAW B767 MM.