What was found
AFT CARGO DOOR CUT OUT AREA UNDER SCUFF PLATE HAS CORROSION. GROUNDED - YES. REMOVED CORROSION ON AFT CARGO DOOR AREA WEB UNDER SCUFF PLATE IAW B737-900 SRM 51-10-02. ORIG THK =0.050" IAW B737NG SRM 53-60-15-07-1, MAT RMV=0.020", REM THK=0.030" AND FOUND OUT OF LIMITS IAW B737NG SRM 53-60-15-1A-1 FIG.103 DET D, REMOVED, LOCATE & DRILLED AND INSTALLED IAW B737NG SRM 51-40-02 AND BAC DWG 146A8123, PN:146A8123-25, PO#:1115002.2.