What was found
DURING HEAVY CHECK, INSPECTIONS OF THE INTERNAL FUSELAGE FLOOR STRUCTURE AT CFIII, CORRODED FLOOR SUPPORT GUSSET AT FR 90 UH, LBL 10 REMOVED AND REPLACED WITH NEW IAW ERJ 175 SRM 51-41-02, NRC# 4502703-2000-0287 REV 45 DATED MAY 28-2021.