What was found
(CAN) DURING APPROACH WHEN THE FLIGHT CREW SELECTED FLAPS 1, THE L/E FLAPS TRANSIT LIGHT REMAINED ILLUMINATED. SOME FLAP ASYMMETRY WAS ALSO INDICATED ON THE FLAP POSITION GAUGE FOR A SHORT TIME BUT WAS LESS THAN 1 DEGREE LEVELING OFF AT AROUND .5 DEGREES SEPARATION. ALTERNATE FLAPS WERE USED TO SUCCESSFULLY MOVE THE FLAPS TO 15 UNITS EVENLY. THE ACFT THEN MADE AN UNEVENTFUL LANDING. MAINTENANCE CARRIED OUT THE FOLLOWING ACTIONS, FLAP POSITION INDICATOR REPLACED IAW AMM 27-58-02. L/E FLAP SLAT POSITION INDICATING SYS TEST OK IAW AMM TASK 27-88-00-710-801. ACFT RETURNED TO SERVICE.