What was found
CORROSION ON AFT RH BEAM AT FR 87, Y= 10.748 ". (MAJOR REPAIR) (LEVEL 2 CORROSION) CORROSION FOUND TO BE 0.075" DEEP. ORIGINAL THICKNESS OF PART IS 0.075" THIS IS FOUND TO BE OUT OF LIMITS PER EMB-175 SRM 51-10-02. LOCATED, DRILLED, AND TREATED HOLES IN NEW AFT RH BEAM PN 170-65669-004 PER EMB-175 SRM 51- 40-02, EMB-175 SRM 51-23-05. RESTORED ORIGINAL FINISH IAW E-175 SRM 51-23-04, 51-23-05, AND 51-23-06. REMOVED AND REPLACED DAMAGED AFT RH BEAM AT FRS 85-89 PER EMB-175 SRM 51-40-08.