As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MAINTENANCE INSPECTION FOUND THE LEFT ENGINE LOWER COWL AFT HINGE BOLT SEVERELY CORRODED. THE AIRCRAFT WAS REMOVED FROM SERVICE. INSTALLED NEW BOLT IN LEFT ENGINE LOWER COWLING IAW EMB 140 AMM 71-12-0. THE AIRCRAFT WAS RETURNED TO SERVICE.