As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKE OFF, RECEIVED A GEAR DISAGREE WARNING MESSAGE. NOSE GEAR DID NOT RETRACT. RAN QRH AND RETURNED TO FIELD. ADJUSTED NLG CENTERED NR1 PROXIMITY SENSOR PX8 IAW AMM. PERFORMED AN OPS CHECK OF THE NOSE LANDING GEAR EXTENSION AND RETRACTION SYSTEM IAW AMM. OPS CHECK GOOD. NO FAULTS NOTED AT THIS TIME.