As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLOOR SUPPORT STRUCTURE, FS409.0 TO FS409.0 +128 LH SEAT RAIL 'BL9' HAVE MULTABLE AREA'S OF CORROSION. (C-CHECK) RO: 11/3/2019 REMOVED CORROSION AND FOUND REWORKED AREA OUT OF LIMITS. REPLACED FLOOR SUPPORT STRUCTURE AT FS409 - FS409+128 LBL9.