What was found
DEFECT WO 74688 NR00099: AFT CARGO SCUFF PLATE LWR SEAL WEB CORRODEDDOT 11/001 - - RESOLUTION: UPON FURTHER EVALUATION AT AFT CARGO LWR SILL WEB FOUND CORROSION 100% MATERIAL LOSS CORROSION IS LEVEL 2 IAW B737 SRM 53-60-15-1A. REMOVED AFT CARGO SCUFF PLATE LWR SEAL WEB IAW B737 SRM 51-40-02. LOCATED, DRILLED AND COUNTERSINK NEW WEB P/N 146A8123U25, PO # FS142351 AT AFT CARGO COMP. LOWER SILL AREA IAW B737 SRM 51-40-05; 51-40-08. APPLIED TREATMENT ON THE NEW OPEN FASTENER HOLES AT NEW WEB IAW B737 SRM 51-20-01. APPLIED PRIMER ON THE NEW FASTENERS HOLES IN THE NEW WEB IAW B737 SRM 51-20-01. APPLIED CIC IN THE INTERNAL SURFACE AREA AT AFT CARGO DOOR LOWER SILL IAW B737 AMM 51-00-59-201. INSTALLED NEW WEB P/N 146A8123U25, PO # FS142351 IN THE AFT CARGO COMP. LOWER SILL AREA IAW B737 SRM 51-40-02.