As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE AC WAS IN FOR HVY CK FOUND AFT WASTE SERVICE PANEL CORRODED BTWN FR 86-89 STR 24RH-26RH. REPLACED WASTE SERVICE PANEL PN 170-86668-403 IAW SRM 51-41-02. SEE AAR NRC#4500901-1000-0104 FOR WORK PERFORMED. AC REMAINS IN YQG FOR COMPLETION.