As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING A HEAVY MAINTENANCE VISIT, A VISUAL INSPECTION FOUND THAT WIRE FBG8398-22 SHOWED SIGNS OF OVERHEATING. NO SIGN OF CHAFING. THIS WIRE WAS FOR THE AFT GALLEY 4 OPTION, HOWEVER, THAT IS NOT INSTALLED ON THIS ACFT. WIRE WAS REPAIRED.