What was found
MCN - MAJOR REPAIR - DURING C-05 CHECK EXFOLIATION CORROSION WAS FOUND ON UPPER SURFACE OF RT AFT OUTBOARD WEB BETWEEN BS 996 AND BS 1016, RBL 44 AND RBL 46. MAINTENANCE BLENDED OUT CORROSION ON UPPER SURFACE OF RT AFT OUTBOARD WEB FROM BS 996 TO BS 1016, RBL 44 TO RBL 46 AND FOUND MATERIAL LOSS OUT OF LIMITS BETWEEN BS 1006 AND BS 1016, RBL 44 AND RBL 46. REMOVED CORRODED AREA OF WEB FROM BS 1006 TO BS 1016, RBL 44 TO RBL 46; FABRICATED A NEW SECTION OF WEB PER DWG 65-45855; INSTALLED REPAIR PART IAW B737-300 SRM 51-40-02.