What was found
AFT CARGO DOOR, THRESHOLD PLATE IS CORRODED. ACFT GROUNDED. BLENDED AWAY CORROSION AND CHECKED LIMITS IAW B737-800 SRM 53-60-15-1A-1. ORIG THICKNESS .045 AND REMOVED .006, REMAINING MAT'L .039 WHICH IS OUT OF LIMITS IAW SRM 53-60-15-1A-1. REMOVED THRESHOLD WEB IAW SRM 51-40-02. LOC'D AND DRILLED AND COUNTERSUNK FASTENER HOLES INTO NEW THRESHOLD WEB IAW DWG 146A8340 REV-, SRM 51-40-05, AND SRM 51-40-08. INSTALLED NUTPLATES ONTO NEW WEB AND INSTALLED NEW WEB IAW DWG 146A8340 REV-, AND SRM 51-40-02.