As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING P4-LAS SCHEDULED C-3 CHECK UNDER JOB CARD HC5314, FOUND THE FS 277.0E UNDERFLOOR BULKHEAD CORRODED BEYOND LIMITS UNDER RBL 40 ANCHOR NUT AT WL146. REPAIR BY REPLACEMENT ACCOMPLISHED, IAW LOCKHEED SMP583 SRM, CH. 51-60 & 51-70 NR 1000302514.