As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW - CREW REPORTED AIRCRAFT UNABLE TO PRESSURIZE AND A LOUD RUSH OF AIR WAS HEARD NEAR AFT GALLEY DOOR. RETURNED TO DFW WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REMOVED DEBRIS AND CLEANED AND LUBED ALL DOOR SILLS. PRESSURIZED AIRCRAFT AND NO LEAKS NOTED. SYSTEM GROUND CHECKED NORMAL OPERATION.