As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE AIRCRAFT WAS IN HEAVY CHECK MAINTENANCE FOUND HARDWARE FOR THE LEFT AND RIGHT HORIZONTAL STABILIZER INBOARD TRAILING EDGE SEAL FAIRING 8 (EA) BOLTS CORRODED. MAINTENANCE REMOVED AND REPLACED BOLTS IAW EMB 170 AMM 55-21-11. THE AIRCRAFT IS OUT OF SERVICE IN HEAVY CHECK.