What was found
DURING APPROACH, NOSE GEAR DID NOT INDICATE EXTENDED, GREEN SAFE OR RED UNSAFE LIGHTS DID NOT ILLUMINATE. PERFORMED COCKPIT OPERATING MANUAL PROCEDURES AND USED EMERGENCY GEAR EXTENSION. GEAR THEN INDICATED DOWN. FLIGHT CONTINUED INTO IND AND LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED THE NOSE LANDING GEAR ACTUATING CYLINDER. CYCLED GEAR SEVERAL TIMES, OPERATIONAL CHECK OK.