What was found
WHEN GEAR WAS LOWERED ON APPROACH, THE THREE GEAR RED UNSAFE LIGHTS ILLUMINATED. ALTERNATE GEAR EXTENSION WAS PERFORMED AND THREE GREEN LIGHTS WERE INDICATED FOR A NORMAL LANDING AT EWR. A SELF TEST OF THE PROXIMITY SWITCH ELECTRONIC BOX WAS PERFORMED WITH NO FAULT LIGHTS INDICATED. THE LANDING GEAR HANDLE ASSEMBLY WAS LUBRICATED, THE GEAR HANDLE WAS CYCLED SEVERAL TIMES WITH OPERATION AND INDICATIONS CHECKING GOOD.