What was found
PIT - FLT 1406 - FLIGHT EN ROUTE CMH TO TPA WHEN CREW REPORTED A PRESSURIZATION PROBLEM. AIR LEAK AND LOUD AIR NOISE HEARD FROM FORWARD ENTRY DOOR. FLIGHT DIVERTED TO PIT WHERE LANDING WAS WITHOUT FURTHER INCIDENT. MAINTENANCE REPOSITIONED HINGE PIN IN UPPER HINGE COVER. FOUND AFT OUTFLOW VALVE NOT COMPLETELY CLOSING. REPLACED OUTFLOW VALVE AND CONTROLLER. RESEALED INNER AREA AROUND EXTERNAL POWER RECEPTACLE. REFERENCE 95ZZZW422.