As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LCQ - MAJOR REPAIR - DURING C-12 CHECK EXFOLIATION CORROSION WAS FOUND AROUND NUT PLATES ON FLOOR SUPPORT CHANNEL AT R-1 DOOR THRESHOLD BS 332 TO BS 360, RBL 59. MAINTENANCE REMOVED CORRODED FLOOR SUPPORT CHANNEL FROM BS 332 TO BS 360, RBL 59; FABRICATED A NEW REPLACEMENT SUPPORT CHANNEL PER DWG 141N1560; INSTALLED REPAIR PART IAW B757 SRM 51-40-02 FIG 8 PG 1.