As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER GEAR SELECTED UP ON TAKEOFF, NOSE GEAR DOORS FAILED TO CLOSE. COMPLIED WITH ALT GEAR EXTENSION METHOD AND RETURNED TO FIELD. LANDING WAS WELL BELOW MAX LDG WEIGHT. ACFT TOWED OFF RUNWAY. FERRIED FOR REPAIRS. FOUND NO RELEVENT FAULTS IN PSEU, REPLACED NLG DOORS SOLENOID SEQUENCE VALVE AS A PRECAUTIONARY MEASURE, AND FLUSHED NLG HYD LINES. RETURNED TO SERVICE.