What was found
MCN - MAJOR REPAIR - DURING C-17 CHECK, EXFOLIATION CORROSION WAS FOUND ON UPPER AND LOWER SURFACE OF FLOOR SUPPORT AT BS 324, RBL 10, WL 208. MAINTENANCE REMOVED CORRODED FLOOR SUPPORT AT BS 324, RBL 10; FABRICATED A NEW REPLACEMENT FLOOR SUPPORT PER DWG 65-45834; INSTALLED REPAIR PART IAW B737-300 SRM 51-40-02, FIG 12.