As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
***CORROSION*** ON FLOOR BEAM AT AFT CABIN BS986 RBL37 WL208. / BLENDED CORROSION ON BS986 FLOOR BEAM RBL37 WL208; 3' X .25' X .014' ORIGINAL THICKNESS .150' FOUND TO BE OUT OF LIMITS PER SRM 53-70-51-1A-1 REPAIRED PER EA 1-A53-8241 REV 3