As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING MAINTENANCE INSPECTION, 1 OF THE LT AC GENERATOR OUTPUT WIRES WAS FOUND CHAFED/SHORTING TO A FRAME NEAR THE LT AC CONTACTOR BOX CONNECTOR 2421-P29 NR 1 NACELLE. IT HAD BURNED A SIGNIFICANT NOTCH IN THE FRAME AT THE AREA OF CONTACT. A SEARCH OF THE ACFT DEFECT HISTORY DID NOT FIND AND ASSOCIATED DEFECTS. THE WIRING AND THE FRAME WILL BE REPAIRED IAW APPROVED REFERENCES.