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 LEVEL 2 CORROSION WAS FOUND ON THE RIGHT SHEAR PANEL AT FRAME 87-88. MAINTENANCE REMOVED AND REPLACED THE RIGHT SHEAR PANEL AT FRAME 87-88 IAW EMB 170/175 SRM 51-42-01, 51-42-02 & 51-43-03. AIRCRAFT IS CURRENTLY STILL OUT OF SERVICE FOR HEAVY CHECK COMPLETION.