As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
JUST AFTER TAKEOFF, THE 'RUDDER FULL PRESSURE', 'RUDDER PRESSURE', AND 'NR 2 RUDDER HYDRAULIC' CAUTION LIGHTS CAME ON. HYDRAULIC QUANTITIES WERE NORMAL. THE AIRCRAFT WAS RETURNED TO THE FIELD. MAINTENANCE REPLACED THE DUAL PRESSURE REGULATOR. LEAK AND OPS CHECKS WERE GOOD AND THE AIRCRAFT WAS THEN RELEASED FOR SERVICE.