Regional Jet 200 ER/LR (CRJ200)
Flight Crew Air Transport Pilot (ATP)
Aircraft Equipment Problem Critical
Flight Crew Diverted; Flight Crew Landed in Emergency Condition; General Maintenance Action; General Declared Emergency
Aircraft
During the climb through FL250; we received an amber 'HYD 2 LO PRESS' caution message.  Since the Captain was the PM; the First Officer took the controls and radios and the Captain ran the proper QRH procedure.  At first; the quantity in system two was exactly 5% and pressure was 2;900 PSI; so I turned the HYD 2B pump on; and monitored the system parameters; per the QRH.  About five minutes later; with the system two quantity still at 5%; the system two pressure dropped to zero.  Accompanying this was a noticeable shift; perhaps a roll; in the aircraft attitude. The shift was noticeable; but not extreme.  I then reran the QRH with the pressure at zero PSI; and this instructed me to turn the pump off.  I immediately turned HYD pump 2B off.  Continuing with the QRH; we declared an emergency and headed to the nearest suitable airport.  I knew that a nearby airport; in addition to being the closest airport; also had long runways and was a company station.  We completed the QRH; headed to the airport; and prepared for a visual approach.  With the wind at 360 at five KTS; we requested the longest north facing runway; even though the traffic flow was to the south runways.  We chose the longest runway; and declared an emergency; because the QRH revealed an increase in landing distance.  I then notified the Flight Attendant; and the passengers.  I performed a landing distance assessment; and we continued the approach.  Due to my First Officer's relatively low time in the CRJ-200 compared to my time; I assumed the controls for the visual approach and landing.  We landed without incident; and proceeded to the gate with the escort from the emergency vehicles.  Overall the situation was handled in a safe; professional manner by all people involved.
CRJ-200 had a 'HYD 2 LO PRESS' caution message climbing through FL250.  The crew complied with QRH procedures and diverted to the nearest suitable airport; landing with the number two hydraulic system failed due to loss of fluid.