As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RETURN TO FIELD FOR NOSE GEAR ISSUE. DECLARED AN EMERGENCY. NOSE GEAR DID NOT RETRACT WHEN GEAR SELECTOR IN UP POSITION. AFTER A FEW MINUTES, NOSE GEAR CAME UP ON ITS OWN. MAINTENANCE PERFORMED MULTIPLE GEAR SWINGS AND OPS CHECKS. OPS CHECKS SATISFACTORY AT THIS TIME. COULD NOT DUPLICATE FAULT.