What was found
CORROSION ON WEB INTERCOSTAL UPPER SILL LOCATED BS 827 PLUS 2.5 INCH AT LEVEL S-18R AND WL 200 AFT CARGO BAY. REPLACED WEB INTERCOSTAL UPPER SILL LOCATED BS 827 PLUS 2.5 INCH AT LEVEL S-18R AND WL 200 AFT CARGO BAY IAW SRM 51-10-02, ITEM 9, AND DWG 146A8310, SHEET 16, REV A, DWG 146A8310, SHEET 15, REV A;