What was found
MCN - MAJOR REPAIR - DURING C-18 CHECK EXFOLIATION CORROSION WAS FOUND ON LOWER SURFACE OF WEB AT R-2 DOOR LOWER SILL BS 990, RBL 49, WL 208. MAINTENANCE REMOVED CORRODED WEB BS 990, RBL 49, WL 208; FABRICATED A NEW REPLACEMENT WEB PER DWG 65-45855; INSTALLED REPAIR PART IAW B737-300 SRM 53-60-01.