What was found
AFT CARGO THRESHOLD SILL HAS CORROSION. GROUNDED - YES. EVALUATED DAMAGE AND REMOVED CORROSION IAW B737-900ER SRM 53-00-53-1A-2 ORIGINAL MAT'L THKS .045 PER B737-900ER SRM 53-60-53-01-2 TABLE 2 REMOVED .022 MAT AND HAD .023 MAT'L, FOUND TO BE OUT OF LIMITS IAW B737-900ER SRM 53-00-53-1A-2 RECEIVED NEW WEB P/N 146A8123U25 PO# 1082624.1 LOCATED AND DRILLED WEB IAW B737-900ER SRM 51-40-05. ASSEMBLED AND INSTALLED WEB IAW ASA B737-900ER SRM 51-40-02 AND BAC DWG 146A8340 REV-