As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB ON FLAP/SLAT RETRACTION, THE NR 4 LEADING EDGE SLAT STILL INDICATED IN TRANSIT. AIRCRAFT RETURNED TO MSP AND LANDED WITHOUT INCIDENT. REPLACED NR 4 LEADING EDGE FLAP/SLAT POSITION SWITCH AND FLAP/SLAT ANNUNCIATOR INDICATION PANEL, SYSTEM CHECKED OK.