What was found
PASSENGER FLOOR STRUCTURE AFT WET AREA, BEAM AT FRAME 86 TO FRAME 87 AND Y=+10.75 INCHES HAS CORROSION IN TWO LOCATIONS. (MAJOR REPAIR) (LEVEL 2 CORROSION). PASSENGER FLOOR BEAM AT AFT WET AREA FRAME 86 TO FRAME 87 AND Y+10.75 HAS 100% MATERIAL LOSS PART REQUIRES REPLACEMENT P/N 17065669-004 PER REF E-175 SRM 53-23-10/AD2. REMVOED PASSENGER FLOOR STRUCTURE AFT WET AREA, BEAM AT FRAME 86 TO FRAME 87 AND Y=+10.75" PER EMB 175 SRM 51-40-08. ORDERED AND RECEIVED NEW PASSENGER FLOOR STRUCTURE AFT WET AREA, BEAM AT FRAME 86 TO FRAME 87 AND Y=+10.75" PN# 170-65669-004. LOCATED AND DRILLED NEW PASSENGER FLOOR STRUCTURE AFT WET AREA, BEAM AT FRAME 86 TO FRAME 87 AND Y=+10.75" PN# 170-65669-004 PER EMB 175 SRM 51-40-02. INSTALLED FASTENERS ON NEW PASSENGER FLOOR STRUCTURE AFT WET AREA, BEAM AT FRAME 86 TO FRAME 87 AND Y=+10.75" PN# 170-65669-004 PER EMB 175 SRM 51-40-08. TOPCOATED FASTENERS ON BEAM AT FRAME 86 TO FRAME 87 AND Y=+10.75" IAW E-175 SRM 51-23-06 AND ENVOY ETN-EJ-51-015. REMOVED AND REPLACED PASSENGER FLOOR STRUCTURE AFT WET AREA, BEAM AT FRAME 86 TO FRAME 87 AND Y=+10.75" PER EMB 175 SRM 51-40-08.SEE WIPS AND TASK FOR ALL WORK ACCOMPLISHED