What was found
AFT PIT DOOR CUTOUT LOWER SILL WEB HAS CORROSION OVER PREVIOUS BLENDOUT. GROUNDED - YES. REMOVED CORROSION AND FOUND BEYOND LIMITS IAW SRM 53-60-15-1A-1. ORIGINAL MATERIAL THICKNESS IS 0.045 IN, MINIMUM REMAINING THICKNESS ID 0.039 IN, REMOVED 0.006 IN. REMOVED AND REPLACED WEB IAW SRM 51-40-02 AND BAC DWG 146A8340 SH 26 REV- AND SH 28 REV-. REMOVED AND INSTALLED AFT CARGO SCUFF PLATES FOR ACCCESS IAW AMM 53-11-02.