What was found
AIRCRAFT WAS GROUNDED: IMMEDIATELY AFTER TAKEOFF RECEIVED LE EDGE FLAP TRANSIT LIGHT. HIGH SPEED AND LOW SPEED AWARENESS TAPES APPEARED. PLI CAME DOWNWITH FLAPS 1 AND AIRSPEED BETWEEN 158. FIRST OFFICER NOTICED A SLIGHT STICK SHAKER MOMENTARILY. EVEN WHEN LOWERING NOSE AND INCREASE AIRSPEED PLI NEVER DISAPPEARED. COMPLIED WITH LE EDGE FLAPTRANSIENT PROCEDURE AND RETURNED TO CLT. EMERGENCY DECLARED AND AIRCRAFT LANDED OVERWEIGHT WITHOUT INCIDENT. MAINTENANCE REPLACED F2 EXTEND PROX SENSOR S171 IAW AMM 27-88-11.