Date: 201304
Local time of day: 1801-2400
Location: ZZZ.Airport, US
Flight conditions: VMC
Light: Daylight
Aircraft: Regional Jet 900 (CRJ900)
Operator: Air Carrier
Operating under: Part 121
Flight plan: IFR
Mission: Passenger
Flight phase: Taxi
ATC / advisory: Ground ZZZ
Aircraft component: Nosewheel Steering
Component problem: Failed
Reporter organization: Air Carrier
Reporter function: Captain; Pilot Flying
Reporter qualification: Flight Crew Air Transport Pilot (ATP)
Second reporter function: Pilot Not Flying; First Officer
Anomaly: Aircraft Equipment Problem Critical; Ground Event / Encounter Loss Of Aircraft Control; Ground Excursion Runway
Detector: Person Flight Crew
When detected: In-flight
Result: General Declared Emergency
Contributing factors: Aircraft
Primary problem: Aircraft

Narrative: After a normal flight we made a stabilized approach with an approach speed of 141 knots at a landing weight of 70;650 pounds. Weather conditions were good; VMC with winds 190/9. Touchdown was smooth and on centerline and the nose wheel was lowered smoothly to the runway. Thrust reversers were deployed. The aircraft started pulling to the right as the aircraft slowed. We received a nose wheel steering caution message. The tiller did not respond and left rudder was insufficient to stop the drift to the right; so I applied left braking. As the aircraft slowed the turn increased. Full left brake also did not stop the turn and I asked the First Officer to help me and we both applied hard left brake and then full braking as the aircraft didn't respond to the inputs and was heading for the grass. The nose wheel of the aircraft departed the runway at slow speed into the grass off the right side of the runway. The left and right main landing gear both remained on the runway. At this point I made a brief PA to the cabin to remain seated. APU power was established and both engines were shutdown. While the APU was spooling up I spoke with the flight attendants. I asked if they were okay and got a quick assessment from them that there seemed to be no injuries or immediate issues; and advised them that we would not be evacuating at that time; and that I would be back to them shortly. Appropriate checklists and procedures were complied with. SOC was notified. Once the engines were shut down I made another PA quickly summarizing our situation. The ARFF vehicles were approaching the aircraft from the front so I asked Number 1 Flight Attendant to open the main cabin door. There were no leaks; fires; flat tires; or other issues of immediate concern and we reported that we had no known injuries on board. We told them that we had not yet contacted local operations but that busing would be required and that we would be deplaning onto the runway. Cooling fans were placed on the brakes. Landing gear was pinned. Passengers were bussed to the terminal without incident. All checked and gate checked carry-on bags were left on board and passengers later retrieved them at baggage claim.


Second narrative: [Narrative 2 had no additional information]


Synopsis: CRJ-900 flight crew reported they lost nosewheel steering on landing roll and were unable to keep the aircraft on the runway. No damage or injuries were reported.