As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY MAINTENANCE, CORROSION WAS DISCOVERED ON FR. 69 STR 31R EXT. SKIN AROUND LAV VENT; REF. WO 926635 & NRC 44066; INSTALLED REPAIR DOUBLER AND 2 EA FILLERS AT FR69 STR 31R EXT SKIN AROUND LAV VENT IAW SRM 53-41-11-300-004 FIG 001 (SHEET 1).