As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CMH - UNSCHEDULED LANDING - ENROUTE FROM EWR TO LAS THERE WAS A LOUD LOW FREQ. NOISE FROM THE RIGHT AFT OVERWING EMERGENCY EXIT AND THE AIRCRAFT DIVERTED TO CMH; ON DESCENT THROUGH 4.3 PSI DIFFERENTIAL PRESSURE THE NOISE STOPPED. IN CMH, THE EMERGENCY EXIT DOOR WAS REMOVED AND REINSTALLED ENSURING THE DOOR SEATED PROPERLY; THE AIRCRAFT WAS PRESSURIZED AND CHECKED FOR LEAKS AND NOISES - NONE WERE NOTED