As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB ON LEADING EDGE FLAP AND SLAT RETRACTION, NR 1 KRUEGER FLAP INDICATED STILL DOWN. FLIGHT RETURNED TO MSP. PERFORMED FUEL DUMP AND LANDED WITHOUT INCIDENT. MAINTENANCE ADJUSTED NR 1 KRUEGER FLAP SWITCH AND PERFORMED OPERATIONAL CHECK, SYSTEM CHECKED OK.