As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IDG WIRE TB208-1 ROUTED AGAINST THE PYLON SEPARATOR PN 601R37138-20 ON PANEL 422DB CAUSING AN EVENTUAL ARC & HOLE THROUGH THE SEPARATOR & DAMAGE TO THE WIRE. WIRE & SEPARATOR WERE REPLACED. THIS WAS DISCOVERED WHILE PERFORMING A ROUTINE RT ENG CHANGE.