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 MAIN CABIN DOOR WILL NOT OPEN FROM INSIDE. HANDLE STICKS AT 10:00 POSITION. THE AIRCRAFT WAS REMOVED FROM SERVICE. FOUND RETAINING RING ON FOLDING FLAP ACTUATING MECHANISM MISSING. INSTALLED RING IAW EMB 140 AMM 52-18-02. THE OPERATIONAL CHECK WAS GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.