What was found
AFT CARGO COMPARTMENT FLOOR STRUCTURE Z-ANGLE LBL 20; WL 156; STA 727D TO 807 HAS MULTIPLE AREAS OF CORROSION ON UPPER AND LOWER SURFACES; MARKED. / AFT CARGO COMPARTMENT FLOOR STRUCTURE Z ANGLE LBL 20; WL156; STATION 727D TO 807 HAS MULTIPLE AREAS OF CORROSION ON UPPER AND LOWER SURFACES REMOVED CORROSION FOUND MATERIAL LOSS ON STAT. 727I BETWEEN STAT 767-807. VERIFIED MATERIAL LOSS MORE THAN 10% OUT OF LIMITS. USED AAR TOOL # 36644 DUE 08DEPT20 IAW SRM 53-00-53-1A-2 AND SRM 53-60-33-01-2 REPAIRED Z ANGLE WITH VERIFIED MATERIAL BAC1496-377 7075-762 ATAG A42356 IAW B737 SRM 53-00-53-2R-5 AND B737 DWG 146A7500. REV- Z ANGLE P/N 146A7502-31