As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 4074 THE CREW REPORTED WHEN OPENING THE MAIN CABIN DOOR, IT SEEMED TO CATCH ON SOMETHING PREVENTING IT FROM OPENING SMOOTHLY. THE AIRCRAFT WAS REMOVED FROM SERVICE. LUBED MAIN PASSENGER DOOR ROLLERS IAW EMB 53-21-02. PER MIC SHEET MAIN PASSENGER DOOR SCHEDULED FOR RE-ADJUSTMENT. THE AIRCRAFT WAS RETURNED TO SERVICE.