As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPPER LAV PAN SUPPORT INTERCOSTAL CORRODED. LOC STA 1540 TO 1560 BETWEEN STR 27R AND 29R. NEW INTERCOSTAL FABRICATED. MATCH DRILLED PER MFG DWG 146N3650 OK TO ASSEMBLE PAN PARTS OFF AC INSTALLED UPPER LAV PAN SUPPORT TO LAV PAN LAV PAN INSTALLED ON NR001.