Flight Crew Air Transport Pilot (ATP)
Aircraft Equipment Problem Critical
Air Traffic Control Issued New Clearance; Flight Crew Diverted; Flight Crew Inflight Shutdown; Flight Crew Landed As Precaution
Aircraft
Enroute we received a RH OIL PRESSURE master warning message. I was the flying pilot and First Officer ran the QRH for the warning. The oil temp was in the normal range but the oil pressure was fluctuating from 50-25 PSI. The left side was around 70 PSI. After running the QRH for the low oil pressure message we were directed to perform the intentional shutdown of the right engine since the oil pressure was continuing to slowly drop lower. We advised ATC of the situation and that we would be diverting to [a nearby alternate]; since it was the closest usable airport. After advising the flight attendant; passengers and company of the situation we requested vectors to the longest runway available and asked to have emergency equipment standing by just in case. We landed single engine without further incident.
CRJ-200 Captain reported an inflight shutdown of right hand engine after receiving a low oil pressure warning message.