What was found
DURING CLIMB THE CREW RECEIVED A NOSE WHEEL STEERING MSG AND THE GEAR WOULD NOT RETRACT. THEY RETURNED TO IAD. THE AIRCRAFT LANDED SAFELY BUT IS BEING TOWED TO THE GATE AS A PRECAUTION. ATC DECLARED AN EMERGENCY AND TRUCKS ROLLED. THE AIRCRAFT IS CURRENTLY WAITING FOR A MAINTENANCE INSPECTION. PASSENGERS ARE BEING DEPLANED AS NORMAL AT THE TERMINAL. REMOVED & REPLACED NLG RETRACT ACTUATOR HOSE & SERVICED HYD SYS #3 IAW AMM. OPS & LEAK CHECK GOOD AT THIS TIME