What was found
SLC-FLIGHT 7672, DURING PREFLIGHT INSPECTION THE CREW REPORTED THAT THE FORWARD EMEGENCY EXIT SIGN WAS INOPERATIVE. MAINTENANCE OPERATIONALLY CHECKED THE EMERGENCY LIGHTING WITH NO DEFECTS NOTED AND THE ACFT WAS APPROVED FOR RETURN TO SERVICE. DURING POST FLIGHT INSPECTION ON FLIGHT 7672 IN MCI, THE DISCREPANCY REPEATED. MAINTENANCE REMOVED AND REPLACED THE NR 6 EMERGENCY LIGHT INVERTER, OPERATIONALLY CHECKED WITH NO DEFECTS, AND THE ACFT WAS APPROVED FOR RETURN TO SERVICE. (S)