What was found
AFTER TAKEOFF NOSE WHEEL LANDING GEAR GREEN LIGHT REMAIN ILLUMINATED, DID NOT EXTINGUISH AFTER GEAR WAS RECYCLED. REMAINED ON FOR THE DURATION OF FLIGHT, UPON LANDING GEAR CYCLED DOWN, ALL 3 GREEN LIGHTS CAME ON. JACKED AIRCRAFT, COMPLIED WITH GEAR SWING AND CONFIRMED SQUAWK, FOUND UPLOCK SWITCH INOP. REMOVED AND REPLACED NOSE GEAR SWITCH. ACCOMPLISHED GEAR SWING AND OPS CHECK GOOD. BLED HYDRAULIC SYSTEM AND DOWN JACKED AIRCRAFT, WORK DONE IAW CESSNA MM CHAPTER 32-31-14.