What was found
CORROSION ON FLOORBEAM Y512 IN AFT PAX CABIN, LOC AT FR66 MEASURED L=0.50", W=0.25", D=0.004" APPROX (1 POINT) SSI 534147. REPLACED FLOORBEAM Y512 IN AFT PAX CABIN, LOC AT FR 66 IAW SRM 51-42-11 AND SRM 51-72-11, DWG D53472815, JOB COMPLETE.