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 ON TAKEOFF. NOSEWHEEL WOULD NOT RETRACT. CREW RETURNED TO FIELD AND LANDED WITHOUT INCIDENT. MAINTENANCE TROUBLESHOT, ADJUSTED NLG UPLOCK SENSOR AND PERFORMED CHECKS IAW AMM. ACFT RELEASED FOR SERVICE.