What was found
DURING CLIMBOUT FROM MSP, NOSE LANDING GEAR UNSAFE LIGHT REMAINED ON AT SPEED ABOVE 238 KNOTS. RECYCLED GEAR AND LIGHT OPERATED NORMALLY. FLIGHT CONTINUED TO DESTINATION (ONT) AND LANDED WITHOUT INCIDENT. PERFORMED BITE CHECK OF PROXIMITY CONTROL UNIT AND CHECKED WIRING TO NOSE GEAR INDICATION SENSORS. ALL CHECKED OK. ALSO, JACKED AIRCRAFT AND CYCLED GEAR SEVERAL TIMES. DISCREPANCY COULD NOT BE DUPLICATED. AIRCRAFT RETURNED TO SERVICE.