As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX - ON ARRIVAL OF FLT 453 - CREW REPORTED UPON DEPARTURE FROM SJC WHEN THE LANDING GEAR WAS RETRACTED, THE NOSE GEAR UNSAFE LIGHT ILLUMINATED. ACCOMPLISHED CHECKLIST WITH SAME RESULT. LANDED WITHOUT INCIDENT. REPLACED NOSE GEAR UPLOCK SENSOR. ACCOMPLISHED GEAR SWING AND OPERATED NORMALLY. (M)