As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY MAINTENANCE, CORROSION ON FLOOR SUPPORT Y1292 AT FR 66 LAV MOUNT HOLE STR 23L; REMOVED CORROSION 100% MATERIAL LOSS OF .110" ORIG. THICKNESS. OUT OF LIMITS PER SRM. REMOVED AND REPLACED FLOOR SUPPORT BEAM AT Y1292 FR 66 STR 23L IAW SRM 51-72-11 REFERENCE HAECO NR 440586-32439 FOR WORK ACCOMPLISHED.