As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
*** WHILE AIRCRAFT WAS IN FOR HEAVY CHECK *** MAINTENANCE REPORTED LEVEL 2 CORROSION ON THE FLOOR SUPPORT STRUCTURE SHEAR PANEL AT FR87 RH SIDE. MAINTENANCE REMOVED AND REPLACED THE FLOOR SUPPORT STRUCTURE SHEAR PANEL AT FR87 RH SIDE IAW EMB SRM 51-42-01. AIRCRAFT IS CURRENTLY OUT OF SERVICE FOR HEAVY CHECK COMPLETION.