As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CENTER FUSELAGE III PASENGER CABIN FLOOR STRUCTURE, CORROSION FOUND AT PANEL SUPPORT FRAME 87 RBL 24" AREA. CENTER FUSELAGE III FRAME 87 RBL 24" PASSENGER CABIN FLOOR STRUCTURE PANEL SUPPORT REPLACE IAW SRM 51-41-01 PSE 53-23-005. A/C REMAINS OUT OF SERVICE FOR HEAVY CHECK COMPLETION.