As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY MAINTENANCE MAIN CABIN -(MAJOR REPAIR) CORROSION ON FLOOR SUPPORT AROUND FASTENER HOLE FR 19 LOCATED UNDER PREVIOUS CUTOUT REPAIR AT AISLE SEAT TRACK. REPAIRED CROSSBEAM IAW ETD2020-170-025365. AIRCRAFT REMAINS IN HEAVY MAINTENANCE.