As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ABE-FLIGHT 3519 CREW REPORTED NR 2 HYDRAULIC PUMP LIGHT ILLUMINATED IN FLIGHT ALONG WITH RUDDER FULL PRESSURE, AND HYDRAULIC RUDDER CAUTION LIGHTS. EMERGENCY WAS DECLARED. AIRCRAFT LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE INSPECTED AIRCRAFT AND FOUND NO SIGN OF HYDRAULIC LEAKS. AIRCRAFT WAS GROUND RAN WITH CREW. ALL HYDRAULIC PRESSURE AND QUANTITIES INDICATED NORMAL. BOTH HYDRAULIC SYSTEMS WERE BLED. AIRCRAFT RETURNED TO SERVICE.