What was found
PIT - FLT 345 - DURING LANDING GEAR EXTENSION, GEAR CAME DOWN WITH 3 GREEN AND 3 RED LIGHTS. HYDRAULIC PRESSURE WAS NORMAL. CREW RECYCLED GEAR AND RECEIVED 3 GREEN LIGHTS WITH RED LIGHTS EXTINGUISHED. FLIGHT LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE CLEANED THE LANDING GEAR HANDLE S78 MICROSWITCH, PINNED THE LANDING GEAR AND OPERATED THE GEAR HANDLE SEVERAL TIMES. OPERATIONAL CHECK GOOD. REMOVED GEAR PINS. AIRCRAFT OK FOR SERVICE. (M)