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 THE L1 DOOR EMERGENCY SLIDE SUPPORT BOLTS CORRODED. MAINTENANCE REMOVED AND REPLACED THE L1 DOOR EMERGENCY SLIDE SUPPORT BOLTS IAW EMB 170 AMM 21-10-01. THE AIRCRAFT IS OUT OF SERVICE IN HEAVY CHECK.