As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE LANDING GEAR HANDLE WOULD NOT RAISE TO THE UP POSITION AFTER TAKEOFF. FUEL WAS DUMPED AND THE AIRCRAFT WAS RETURNED TO HNL WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE RT MLG TRIM CYLINDER HYDRAULIC LINE RUPTURED. THE HYDRAULIC LINE WAS REMOVED AND REPLACED AND OPERATION OF THE GEAR HANDLE CHECKED GOOD.