As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE NR 3 HYD PRESSURE LIGHT CAME ON AND THERE WAS NO PRESSURE SHOWING IN THE SYSTEM. AFTER CONSULTING WITH MAINTENANCE, CREW RETURNED TO DEPARTURE AND ATC DECLARED AN EMERGENCY FOR CREW. PASSENGERS DID NOT BRACE AND CREW LANDED AND TAXIED TO GATE WITHOUT INCIDENT. MAINTENANCE INSPECTED AND FOUND THE PUMP SLOW TO PRESSURIZE. MAINTENANCE R & R THE NR 3 HYD PUMP IAW AMM AND OPS CHECKED GOOD. ACFT IS GOOD FOR SERVICE.