What was found
IAH - FLT 1485 - WHEN THROTTLES WERE RETARDED WITH FLAPS EXTENDED, THE HORN WOULD NOT SILENCE. THE LANDING GEAR WAS LOWERED WITH 3 GREEN AND 3 RED GEAR LIGHTS ILLUMINATING. A 'TOO LOW' GEAR ALERT WAS ALSO RECEIVED. THE GEAR WAS CYCLED AND INDICATIONS WERE NORMAL. THE AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND DEBRIS STICKING IN GEAR HANDLE. THE GEAR HANDLE WAS CLEANED AND LUBRICATED AND OPERATION CHECKED GOOD. (X)