What was found
MCN - MAJOR REPAIR - DURING C-17 CHECK EXFOLIATION CORROSION WAS FOUND UNDER FORWARD INBOARD CORNER OF AFT CARGO COMPARTMENT DOOR SILL WEB BS 794, RBL 30. MAINTENANCE REMOVED CORRODED AFT CARGO COMPARTMENT DOOR SILL WEB AT BS 794, RBL 30; FABRICATED A NEW REPLACEMENT STRAP PER DWG 65-47688; INSTALLED REPAIR PART IAW B737-300 SRM 51-40-02, FIG. 9.