As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LAX - CREW REPORTED LEADING EDGE SLAT ASYMMETRY AND LEADING EDGE FLAP TRANSIT LIGHT WITH STICK SHAKER. EMERGENCY DECLARED FLIGHT RETURNED LAX LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED LEADING EDGE FLAP EXTEND PROXIMITY SENSOR F3. SYSTEM GROUND CHECK NORMAL OPERATION.