What was found
AFTER TAKEOFF, NOSE GEAR UNSAFE LIGHT REMAINED ON AFTER GEAR RETRACTION. RECYCLED GEAR, LIGHT REMAINED ON, INDICATION NORMAL WITH GEAR DOWN. FLIGHT CONTINUED TO ORD AND LANDED WITHOUT INCIDENT. FOUND NOSE GEAR DOWNLOCK PROXIMITY SWITCH WITH DELAMINATED FACE. REPLACED SWITCH PROXIMITY SENSOR, OPERATIONAL CHECK OK.