As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED THE NOSE GEAR WOULD NOT RETRACT AFTER TAKEOFF FROM CAK. AIRCRAFT RETURNED TO CAK AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED AND FOUND THE NOSE LANDING GEAR (NLG) LOCKPIN INSTALLED. MAINTENANCE REMOVED THE NLG LOCKPIN PER THE AIRCRAFT MAINTENANCE MANUAL. NO FURTHER DEFECTS WERE NOTED. THE AIRCRAFT WAS RELEASED FOR SERVICE.