As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAKE OFF, THE NR 1 HYDRAULIC LIGHT ILLUMINATED. THE PILOT FOLLOWED THE CHECKLIST AND LANDED ON HI 389. THE MECHANIC CHECKED THE NR 1 HYDRAULIC SYSTEM PRESSURE CONTROL AND WARNING SYSTEM COMPLIED WITH GROUND RUN AND OPS CHECK. NO DEFECT NOTED.