What was found
CORROSION AT FWD WET AREA AFT LEFT SILL AT FR 19, Y-43 (MARKED) (MAJOR REPAIR) (LEVEL 2 CORROSION). REMOVED CORROSION ON FWD LEFT SILL FR 19 Y-43 IAW E-175 SRM 51-10-03. ORIGINAL MATERIAL THICKNESS IS 0.196 DRAWING # 171-13958-003 MATERIAL REMOVED IS .010?. LOCATED AND DRILLED NEW FLOOR SUPPORT PN 171-13958-003 IAW EMB 175 SRM 51-40-02. TREATED AND PRIMED HOLES IAW EMB 175 SRM 51-23-04, EMB 175 SRM 51-23-05 AND ENVOY ETN-EJ-51-009. TRANSFERRED 2 EA ANGLE TO NEW FLOOR SUPPORT IAW EMB 175 SRM 51-40-08. PN 171-13958-003. RESTORED FINISH IAW E-175 SRM 51-23-06 AND ENVOY ETN-EJ-51-015, AND APPLIED CIC IAW E-175 CPM PART 1 51-25-00. REMOVED AND REPLACED LH FLOOR BEAM BETWEEN FR19 & FR20 AT Y-43 PER EMB-175 SRM 51-40-08.