What was found
MCN - MAJOR REPAIR - DURING C-17 CHECK EXFOLIATION CORROSION WAS FOUND ON AFT CARGO COMPARTMENT DOOR SILL WEB IN SEVERAL LOCATIONS BETWEEN BS 794.3 AND BS 847, RBL 20. MAINTENANCE REMOVED CORRODED SECTION OF AFT CARGO COMPARTMENT DOOR SILL WEB FROM BS 794.3 TO BS 847, AT RBL 20; FABRICATED A NEW REPLACEMENT SECTION OF WEB AND A REPAIR SPLICE; INSTALLED REPAIR PARTS IAW B737-300 SRM 51-70-11, FIG. 1.