As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW - FLT 1821 - DURING CLIMB-OUT, SLATS WERE RETRACTED AND A SLAT DISAGREE LIGHT ILLUMINATED. CREW RAN CHECKLIST AND RETURNED TO DFW AND LANDED OVERWEIGHT WITHOUT FURTHER INCIDENT. MAINTENANCE FUOND SENSOR ON LEFT WING STUCK. SENSOR WAS LUBRICATED AND OPS CHECKED NORMAL. OVERWEIGHT LANDING WAS ACCOMPLISHED WITH NO ABNORMAL FINDINGS. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)