What was found
AFT CARGO COMPARTMENT FLOOR STRUCTURE STA 767+3; RBL 13 AND WL 155 RAIL HAS CORROSION AT NUTPLATE HOLE. / BLENDED CORROOSION ON AFT CARGO FLOOR STRUCTURE AT STA 767+3 RBL 13 WL 155 VERIFIED MATERIAL LOSS ORIG 'T' .080 REMAINING 'T' .057 LOSS OF .023 FOUND TO BE OUT OF LIMITS. ACCOMPLISHED B737-800 SRM 53-00-53-2R-3 REPAIR 3 ALTERNATIVE 3. TOOL #36644 CAL DUE 08/24/21 P/N BAC1509-1006887050T7 ATAG A42022 P/N 146A7501-41