What was found
AFT CARGO DOOR THRESHOLD WEB HAS AREAS OF LIGHT SURFACE CORROSION FROM BS 787+16 THROUGH BS 847-9.<[01] REMOVED CORROSION AFT CARGO DOOR THRESHOLD WEB FROM BS 787+16 THROUGH BS 847-9. ORIGINAL THICKNESS IS 0.050?; MATERIAL LOSS IS 0.010?; MAX ALLOWED IS 0.005?; REMAINING THICKNESS IS 0.040? FOUND TO BE OUT OF LIMITS PER SRM 53-60-15-1A-1;[02] REMOVED DISCREPANT AFT CARGO THRESHOLD WEB IAW SRM 51-40-02;[03] LOCATED AND DRILLED AFT CARGO DOOR THRESHOLD WEB PER SRM 51-40-05; COUNTERSINK PER SRM 51-40-08; TREAT AND PRIME BARE METAL PER 51-20-01;[04] VERIFIED CORRECTIVE ACTIONS #1; #2 AND #3. INSPECTION C/W.;[05] REMOVED AND REPLACED AFT CARGO DOOR THRESHOLD WEB PER SRM 51-10-02 AND SRM 51-40-02-0G-0-B00069;[06] INSPECTED THE WORK PERFORMED ON C/A #5; NO DEFECTS NOTED.