As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 4489 THE CREW REPORTED THE MAIN CABIN DOOR WAS VERY DIFFICULT TO OPEN. THE DOOR OPEN HANDLE NEEDED EXCESSIVE FORCE AT THE MIDWAY POINT. THE AIRCRAFT WAS REMOVED FROM SERVICE. LUBRICATED MAIN CABIN DOOR IAW EMB 135 AMM 52-18-00. NO PARTS REMOVED OR REPLACED. THE OPERATIONAL CHECK WAS GOOD IAW AMM 52-00-00. THE AIRCRAFT WAS RETURNED TO SERVICE.