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 CORROSION FOUND ON CENTER FUSELAGE 3 FLOOR SUPPORT STRUCTURE IB GUSSETT PLATE AT FR 90 RT SIDE. REPLACED GUSSETT PLATE PN 170-60259-001 IAW SRM 51-41-02. SEE AAR NRC#4500901-1000-0071 FOR WORK PERFORMED. AC REMAINS IN YQG FOR COMPLETION.