What was found
DURING APPROACH UPON LANDING GEAR EXTENSION, NOSE GEAR UNSAFE INDICATION REMAINED ILLUMINATED. RECYCLED LANDING TO NO AVAIL. NOSE LANDING GEAR SAFE INDICATION STARTED TO SLOWLY FLASH. VERIFIED NOSE LANDING GEAR POSITION THROUGH VIEWING PORT. FLIGHT LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED S-93 AND S-96 (P/N'S H10-1015-4 AND -3) POSITION SWITCHES. OPERATIONAL CHECK NORMAL.