What was found
AIR TURN BACK. FLIGHT CREW REPORTED AUTO PRESSURIZATION INOPERATIVE. RETURNED TO ATL WITHOUT INCIDENT. REPLACED OUTFLOW VALVE HEATER GASKET AND CHECKED OKAY.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIR TURN BACK. FLIGHT CREW REPORTED AUTO PRESSURIZATION INOPERATIVE. RETURNED TO ATL WITHOUT INCIDENT. REPLACED OUTFLOW VALVE HEATER GASKET AND CHECKED OKAY.