As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
*** WHILE AIRCRAFT WAS OUT OF SERVICE FOR HEAVY CHECK *** LEVEL 2 CORROSION WAS FOUND ON SHEAR PANEL 170-91919-001 @ CABIN AFT WET AREA . SHEAR PANEL WAS REMOVED AND REPLACED IAW EMB170/175 SRM 51-41-02 REV 45. AIRCRAFT REMAINS OUT OF SERVICE FOR HEAVY CHECK COMPLETION