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 REAR FUSELAGE FLOOR STRUCTURE AT FR 90 GUSSETS AT RBL 14 AND RBL 32 HAVE CORROSION. MX REMOVED AND REPLACED REAR FUSELAGE FLOOR STRUCTURE AT FR 90 GUSSETS PN 170-60257-001 AT RBL 14 AND RBL 32 IAW SRM 51-41-02. SEE AAR WC# 4500430-2000-0021 FOR WORK PERFORMED. AC REMAINS IN YQR FOR COMPLETION.