What was found
CORROSION; AFT CARGO DOORWAY SUB THRESHOLD WEB UPPER SURFACE; BS 794.5 + 3 TO BS 827 + 17; RBL 23 TO RBL 27 ; / [01] EVALUATED CORROSION ON SUBTHRESHOLD WEB BS 794.5+3 TO 827+17 RBL 23-27; FOUND 0.015 REMOVED FROM ORIG 0.045 FOUND TO BE OUT OF LIMITS PER SRM 53-60-15-1A-1 USING DIAL DEPTH GAUGE ATS 2678 S/N UNKNOWN; [02] VERIFIED CORRECTIVE ACTIONS STEP 1.; [03] LOCATED; DRILLED; AND INSTALLED NUTPLATES ON NEW ACB SUB THRESHOLD WEB. BS794-BS847; RBL 23. PER DWGS 146A8120; 146A8340 AND SRM 51-40-02-0G-0; [04] VERIFIED LOCATE AND DRILL UP; AND NUTPLATES INSTALLED PER SRM 51-40-02-0G-0 AND DWG 146A8120; 146A8340.