As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE A/C WAS IN FOR HEAVY CHECK FOUND LEVEL 2 CORROSION ON HARDWARE ON NUMEROUS ADEL CLAMPS AT LEFT WING SPAR 3. MX REMOVED AND REPLACED HARDWARE AT LEFT SPAR 3 IAW EMB 170 AMM 24-00-03. P/N NAS1801-08-8 WASHER. A/C REMAINS IN CMH FOR HEAVY CHECK. COMPLETION.