What was found
CORROSION ON SUBTHRESHOLD WEB AT FWD CARGO BAY BS456 - BS475 RBL28. MARKED<[01] EVALUATED CORROSION ON WEB; FOUND DEEPEST LOCATION AT BS 462 RBL 28 WL 156; FOUND 0.020 REMOVED FROM ORIG 0.045 IN NUMEROUS 1'X1' AREAS; FOUND TO BE OUT OF LIMITS PER SRM 53-30-15-1A-1 USING DIAL DEPTH GAUGE ATS 2473 DUE 08/2023;[02] LOCATED; DRILLED; DEBURRED AND INSTALLED NUT PLATES ON NEW SUBTHRESHOLD WEB BS 440-492 RBL 28 PER SRM 51-40-05-0G-0; SRM 51-40-02-0G-0; DWG 143A8330.;[03] VERIFIED CORRECTIVE ACTION 1 AND 2 AND MEASUREMENT TABLE