What was found
FWD SERVICE DOOR CUT OUT STRUCTURE THRESHOLD LOWER HORIZONTAL BEAM HAS SPOTS OF CORROSION BETWEEN FRAMES 20 AND 22. BLENDED CORROSION ON LOWER SILL IAW SRM 51-10-03, DETERMINED TO BE OUT OF SRM LIMTS. REMOVED LOWER SILL IAW SRM 51-40-02. INSTALLED NEW LOWER SILL IAW SRM 51-40-02. PRIMED AND TOPCOATED FASTENERS AND APPLIED CIC IAW EMB CPM 51-20-05, 51-21-06 , ETN EM-51-091 AND CPM 51-61-00.