As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 4121 THE FLIGHT ATTENDANT REPORTED THE CABIN DOOR WAS DIFFICULT TO OPEN AND CLOSE. THE AIRCRAFT WAS REMOVED FROM SERVICE. PERFORMED LUBRICATION OF DOOR IAW EMB-140 AMM 52-18-00. THE OPERATIONAL CHECK WAS GOOD, NO FURTHER DEFECTS NOTED. THE AIRCRAFT WAS RETURNED TO SERVICE.