As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEADING EDGE FLAP LIGHTS STAYED ON DURING FLIGHT UNTIL CREW WENT FROM POSITION ONE, TO FLAP POSITION FIVE. GREEN LIGHT THEN CAME ON AND STAYED ON THROUGH LANDING. *S/D* LEADING EDGE FLAP DRIVE UNIT AT POSITION NR 1 LT FAILED. REPLACED LEFDU AND AIRCRAFT RETURNED TO SERVICE.