As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN DECK CARGO COMPARTMENT FLOOR ALONG CTR SEAT TRACK Y0 AT FR78, CORROSION FOUND AT TRACK CROWN. CORROSION REMOVED AS PER SRM 51-74-10 REV 20 MATERIAL REMOVED 0.039" (L-25" W-0.5") AND FOUND OUT OF LIMIT AS PER SRM 53-10-16 REV 20 FIG 102. REPAIR CARRIED OUT AS PER SRM 53-10-16 FIG 201 REV 20. REPAIR CLASSIFIED AS MAJOR PER GMM 6-2-100 REV 112.