As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH - THE CREW REPORTED THAT THE MAIN CABIN DOOR WOULD NOT CLOSE NORMALLY. MAINTENANCE REMOVED AND REPLACED THE FORWARD PAX DOOR LOCK BOX ASSEMBLY, RIGGED AND OPERATIONALLY CHECKED WITH NO DEFECTS NOTED, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.