What was found
IAH- DURING FLIGHT 3798 THE CREW NOTED THAT NOSE GEAR UNSAFE LIGHT ON AFTER GEAR EXTENSION ON APPROACH, SYSTEM NR 1. SYSTEM NR 2 OK. MAINTENANCE ADJUSTED THE NOSE GEAR PRIMARY DOWNLOCK PROXIMITY SWITCH, PERFORMED A OPERATIONAL CHECK OF THE LANDING GEAR SYSTEM, NO DEFECTS NOTED. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.