What was found
AFT CARGO; STA 767+5; RBL 21; LOWER DOOR SILL INTERCOSTAL HAS CORROSION ON UPPER AND LOWER SURFACE. / REMOVED CORROSION IAW SRM 51-10-02-0G-0 - VISUAL INSPECTION WITH A 10 MAG GLASS NO DEFECTS NOTED. ORIGINAL .071 REMAIN .020 LOSS .050 FOUND TO BE OUT OF LIMITS IAW SRM 53-60-15-1A-1. REMOVED AND REPLACED LOWER SILL INTERCOSTAL @ STA 767 + 5 RBL 21 IN AFT CARGO IAW BOEING DWG 146A8130 SHT 1 REV C AND SRM 51-40-02-0G-0. ATAG A77040 AAR TOOL 36647 CAL 10JUN19