What was found
LCQ - MAJOR REPAIR - DURING C-08 CHECK CORROSION WAS FOUND ON CABIN FLOOR SUPPORT AT BS 330, RBL 11 TO RBL 39. MAINTENANCE REMOVED DAMAGED FLOOR SUPPORT AT BS 330 FROM BL O TO RBL 24; FABRICATED A NEW REPLACEMENT FLOOR SUPPORT PER DWG 141N5160; AND INSTALLED REPAIR PART IAW B757-200 SRM 51-40-02, PG. 4, 16-17, 39-40.