As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLT - FLT 1680 - FLIGHT RETURNED TO FIELD AT CLT DUE TO A LEFT MAIN LANDING GEAR RED LIGHT REMAINING ILLUMINATED WITH GEAR HANDLE IN UP OR OFF POSITION. ON GEAR EXTENSION, ALL INDICATIONS (THREE GREEN LIGHTS) WERE NORMAL. FLIGHT LANDED WITHOUT FURTHER INCIDENT AND TAXIED TO THE GATE. NO EMERGENCY WAS DECLARED. MAINTENANCE REMOVED AND REPLACED THE LEFT MLG UPLOCK SENSOR PER MM 32-61-21. GEAR SWING AND OPERATIONAL CHECK GOOD. (M)