What was found
AFT CARGO PIT THRESHOLD WEB HAS CORROSION. GROUNDED - YES. REMOVED CORROSION ON AFT CARGO THRESHOLD WEB, ORIGINAL MATERIAL THICKNESS .050, REMOVED .020, REMAINING .030, FOUND TO BE OUT OF LIMITS IAW B737-800 SRM 53-60-15-1A-1. REMOVED DAMAGED WEB, LOCATED AND DRILLED NEW WEB PN- 146A8123-25...... PO-1113144.7, AND INSTALLED WEB IAW B737-800 SRM 51-40-02, SRM 51-40-05, AND BAC DWG 146A8340 REV. G.