As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INFLT T564, DURING CLIMB. CREW REPORTED UNSAFE NLG INDICATION ON RETRACTION. RECYCLED AND RECEIVED 3 GREEN LIGHT FOR NLG DOWN. ON RETRACTION RECEIVED UNSAFE LIGHT AGAIN. LANDED WITHOUT INCIDENT. REPLACED NLG UP PROXIMITY SENSOR ELECTRONIC UNIT AS PRECAUTION. REPLACED NLG SHOCK STRUT AND NLG RETRACTION ACTUATOR. GROUND CHECKED NORMAL.