As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN CABIN DOOR WOULD NOT CLOSE COMPLETELY. STUCK IN AN INTERMEDIATE POSITION AND UNABLE TO CLOSE FURTHER. REMOVED FROM SERVICE. PERFORMED OPERATIONAL CHECK OF THE L1 ENTRY DOOR, NO FAULTS NOTED. REF SDS MANUAL 52-11-00. PERFORMED ARMED / DISARMED OF L1 DOOR REF SDS 52-11-00. NO FURTHER DEFECTS NOTED AFTER CYCLING DOOR OPEN / CLOSED. NO PARTS REPLACED. AIRCRAFT RETURNED TO SERVICE.