What was found
CORROSION ON LH BEAM AT FR 87, Y= -10.748". (MAJOR REPAIR) (LEVEL 2 CORROSION) BLENDED CORROSION ON LH BEAM AT FR 87, Y=-10.748" IAW E-175 SRM 51-10-03. ORIGINAL THICKNESS .063 IAW EMBRAER DRAWING 170-86100-001. MATERIAL REMOVED .040" MATERIAL REMAINING .023" PART FOUND TO BE OUT OF ALLOWABLE LIMITS IAW E-175 SRM 51-75-16. LOCATED, DRILLED, AND TREATED HOL ES IN NEW LH BEAM AT FR 87 (PN;170-65669-003) PER EMB-175 SRM 51-40-02. ALODINE PER EMB-175 SRM 51-23-04. RESTORED FINISH TO FASTENERS ON LH BEAM AT FR 87 PER EMB-175 SRM 51-23-06 , ETN-EJ-51-015. APPLIED CIC PER CPM 51-25-00. REMOVED AND REPLACED LH BEAM AT FR 87 Y-10.75" IAW E-175 SRM 51-40-08.