What was found
(CAN) ON TAKEOFF DURING FLAP RETRACTION LEADING EDGE FLAP ASYMMETRY ANNUNCIATED AND LE FLAP LOCK OUT BETWEEN ZERO AND 1. QRH PROCEDURE CARRIED OUT. AIRCRAFT RETURNED TO BLOCKS. ON FINAL APPROACH, LE FLAP ASYMMETRY AND DISAGREE ANNUNCIATED INTERMITTENTLY AFTER MASTER CAUTION CANCELLED FOLLOWED AGAIN BY RANDOM ILLUMINATION. REPLACED NR 9 LE FLAP SLAT POSITION SENSOR.