As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED GEAR DISAGREE MESSAGE AND THAT NOSE GEAR FAILED TO COME UP AFTER TAKEOFF. CREW RETURNED TO FIELD AND LANDED WITHOUT INCIDENT. MAINTENANCE TROUBLESHOT AND CHECKED RIG OF NLG LOCK POSITION PROXIMITY SENSORS. RIG CHECKED GOOD. MAINTENANCE FOUND NLG UP POSITION PROXIMITY SENSOR WITHIN LIMITS, BUT AT HIGH END OF ADJUSTMENT. SENSOR WAS RESET. OPS CHECKS AND GEAR SWINGS WERE GOOD. ALL WORK ACCOMPLISHED BY MAINTENANCE IAW AMM. ACFT RELEASED FOR SERVICE.