As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING DESCENT, AIRSPEED 230, UPON EXTENDING THE FLAPS TO 5 DEGREES RECEIVED LE FLAP TRANSIT LIGHT ON FWD PANEL WITH NR 4 SLAT TRANSIT LIGHT ON OVERHEAD PANEL. CLEARED ITSELF WHEN AIRSPEED WAS BELOW 180. MAINTENANCE REPLACED THE NR 4 SLAT INBOARD PROXIMITY SENSOR IAW AMM 27-88. LEADING EDGE FLAP AND SLAT PROXIMITY SENSOR TESTED GOOD IAW AMM 27-88-11.