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 RT SHEAR PLATE O/B SPLICE AT FRAME 87 TO FRAME 88. MAINTENANCE REMOVED & REPLACED SHEAR PLATE IAW EMB 170 SRM 51-42-02. A/C STILL OUT OF SERVICE FOR HEAVY CHECK COMPLETION.