What was found
AFT CARGO DOOR CUTOUT THRESHOLD WEB HAS CORROSION. GROUNDED - YES. REMOVED CORROSION ON AFT CARGO DOOR CUTOUT THRESHOLD WEB ORIGINAL MAT .045, REMOVED .021, AND REMAINING .024, FOUND TO BE OUT OF LIMITS IAW B737-900ER SRM 53-60-15-1A-1. REMOVED THRESHOLD WEB AND RECEIVED NEWTHRESHOLD WEB P/N 146A8123U25 PO# 1083204.2. LOCATED AND DRILL AND INSTALLED NEW THRESHOLD WEB IAW B37-900ER SRM 61-40-02 AND 51-40-05 AND BAC DWG 146A8340 REV:F.