What was found
CLT - FLT 1979 - ON DESCENT INTO CLT, WHEN LANDING GEAR LOWERED,CREW RECEIVED THREE GEAR RED LIGHTS AND THREE GEAR GREEN LIGHTS. THE GEARHORN SOUNDED AT FLAPS 15. CREW RECYCLED GEAR AND RECEIVED THREE GEAR GREENLIGHTS ONLY. THE FLIGHT LANDED WITH NO FURTHER INCIDENT. MAINTENANCEJACKED AIRCRAFT AND CYCLED GEAR SEVERAL TIMES. UNABLE TO DUPLICATE.CLEANED AND LUBED GEAR HANDLE. CYCLED GEAR SEVERAL MORE TIMES AND WAS STILLUNABLE TO DUPLICATE. SYSTEM OPS CHECK GOOD.(M)