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 CENTER FUSELAGE 3 PAX FLOOR STRUCTURE CORROSION ON GUSSET @FR 89 RBL 23. REPLACED GUSSET PN 170-60259-001 IAW SRM 51-41-02. SEE AAR NRC# 4500867-2000-0070 FOR WORK PERFORMED. AC REMAINS IN YQG FOR COMPLETION.