What was found
CORROSION ON AFT WET AREA LH "FLOOR BEAM" AT FR 87 Y= -12" (MAJOR REPAIR) (LEVEL 2 CORROSION). BLENDED AREA ON AFT LH FLOOR BEAM AT FR87 AND Y= -12? PER EMB 175 SRM 51-10-03. LARGEST BLENDED AREA MEASURES (L: 1.20" W: .60" D: .050") BLENDED AREA FOUND TO BE OUT OF ALLOWABLE LIMITS PER EMB 175 SRM 53-23-10/AD02. PART REQUIRES REPLACEMENT. LOCATED AND DRILLED NEW AFT LH FLOOR BEAM (PN: 170-65669-003) PER EMB 175 SRM 51-40-02. TREATED USING ALODINE PER EMB 175 SRM 51-23-04. RESTORED FINISH TO FASTENERS ON AFT WET AREA LH FLOOR BEAM PER EMB-175 SRM 51-23-06 ETN-EJ-51-015. APPLIED CIC PER EMB-175 AND CPM 51-25-00. REMOVED AND REPLACED LH FLOOR BEAM AT AFT WET AREA FR 87 Y= -12" IAW EMB 175 SRM 51-40-08. LEVEL 2 CORROSION