As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON CLIMBOUT AFTER BRINGING THE GEAR LEVER UP, RECEIVED A NOSE GEAR DOOR OPEN AND GEAR DISAGREE WARNNG MESSAGES. NOSE GEAR SYNOPTIC SHOWED DN AND GREEN WHILE MAINS WERE UP. CYCLED THE GEAR ONCE WITH NO RESOLUTION TO THE PROBLEM. RETURNED TO FIELD. (FLT 6463) INSPECTED AND FOUND OLEO CENTERING/EXTENDED PROXIMITY SENSOR MISALIGNED. ADJUSTED PROXIMITY SENSOR.