As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SUPPORT TASK: MAIN CABIN FLOORBEAM STA 720 RBL24 UPPER SURFACE CORRODED. TRANSCRIBED FROM HAECO GSO NRC# 9282606 REMOVED CORROSION ON FLOORBEAM AT STA 720 PER B757-200 SRM 51-1 HAECO GSO MECH V934114 INSP QC470 0-02. ORIGINAL MATERIAL THICKNESS .125, MATERIAL REMOVED .035, M ATERIAL REMAINING .090 IS OUT OF LIMITS PER B757-200 SRM 53-00-5 1-1A-1. PERFORMED REPAIR OF FLOORBEAM PER UAL ECRA 5335-01119.