What was found
LCQ - MAJOR REPAIR - DURING C-08 CHECK EXFOLIATION CORROSION WAS FOUND ON CABIN FLOOR SUPPORT HAT CHANNEL BS 375, LBL 55. MAINTENANCE BLENDED CORROSION AND FOUND MATERIAL LOSS BEYOND LIMITS; REMOVED DAMAGED FLOOR SUPPORT AT BS 375, LBL 55; FABRICATED A NEW REPLACEMENT FLOOR SUPPORT; AND INSTALLED REPAIR PART IAW DWG 141N5170, AND B757-200 SRM 51-40-01, PG. 3.