What was found
CLT-MSY - FLT 1035 - AFTER TAKEOFF, THE PRESSURIZATION FLOW LIGHT ILLUMINATED. THE FLIGHT ATTENDANT REPORTED AN EXTREMELY LOUD AIR NOISE AT THE AFT SERVICE DOOR. THE AIRCRAFT RETURNED TO THE FIELD AND LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE AFT SERVICE DOOR NOT CLOSED PROPERLY. THE DOOR WAS PROPERLY CLOSED AND THE DOOR OPERATION AND THE DOOR WARNING LIGHT WAS VERIFIED AS OPERATING PROPERLY. (M)