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 UPPER BOLT CORRODED ON THE FORWARD LATCH PIN FITTING AFT CARGO DOOR. MAINTENANCE REMOVED AND REPLACED THE BOLT ON FORWARD LATCH PIN FITTING AFT CARGO DOOR IAW EMB 170 AMM 20-10-01. THE AIRCRAFT IS OUT OF SERVICE IN HEAVY CHECK.