What was found
AFT CARGO DOOR SURROUND LOWER MAIN SILL WEB IS CORRODED. GROUNDED - YES. REMOVED CORROSION AND FOUND BEYOND ALLOWABLE LIMITS IAW SRM 53-60-15-1A-1. ORIGINAL MATERIAL THICKNESS IS 0.045 IN, REMAINING THICKNESS IS 0.035 IN, REMOVED 0.010 IN. REMOVED AND REPLACED AFT CARGO DOOR SURROUND LOWER MAIN SILL WEB IAW SRM 51-40-02 AND BAC DWG 146A8340 SH 26 REV- AND SH 28 REV- INSTALLED THRESHOLD AND CORNER SCUFFPLATES, APPLIED LEVELING COMPOUND,SANDED, AND APPLIED TOPCOAT IAW AMM 53-11-02, AND AMM 51-21-73.