What was found
DURING HEAVY CHECK, INSPECTIONS OF THE INTERNAL FUSELAGE FLOOR STRUCTURE AT CF 111, CORRODED FLOOR SUPPORT GUSSET PLATE AT FR 90 R/H, RBL 24, REMOVED AND REPLACED WITH NEW IAW ERJ 175 SRM 51-41-01. NRG# 4502703-2000-0286. REV 45 DATED MAY 28-2021.