As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAJOR REPAIR - DURING C-09 CHECK EXFOLIATION CORROSION WAS FOUND ON FLOORBEAM FORWARD UPPER T CAP BS 1681.8, AT NUT CLIP ATTACH POINTS FROM CUSP TO CUSP. MAINTENANCE REMOVED CORROSION AND FOUND MATERIAL LOSS OUT OF LIMITS; REMOVED FLOORBEAM FROM BS 1660 TO BS 1681; FABRICATED A NEW REPLACEMENT FLOORBEAM IAW DWG 146N5111; INSTALLED REPAIR PART IAW B757-200 SRM 51-40-20, PG. 10-12.