Flight Crew Commercial
Aircraft Equipment Problem Critical
Flight Crew Inflight Shutdown; Flight Crew Landed in Emergency Condition; General Declared Emergency
Aircraft
On descent through about 11;000 FT into [destination]; Captain pulled power to idle to begin slowing. We received an 'Engine Oil' aural warning along with master warning; triple chime; and left engine oil pressure message. Captain continued to fly the airplane; and we discovered that the engine was spooling down. I pulled out the QRH and ran the 'Single Engine' procedures checklist. We didn't declare an emergency right away; the Captain continued to fly and did the radios; while I ran the checklist. We decided to attempt a relight since we were on a downwind. I completed the single engine procedures; determined that no damage was suspected. I then complied with the relight procedures in the QRH. When I pressed the start button; nothing happened; the N2 never spooled; and it remained at 0 the entire time. I pressed the button for about 10 seconds; decided it wasn't to be. I completed the checklist; which then led to a Single Engine Landing checklist. At this point the Captain declared an emergency. I completed the Single Engine Landing checklist. I then called the Flight Attendant and we discussed the situation; and I gave her the details and instructions depending on what our outcome would be. I then made a quick PA alerting the passengers to the presence of the emergency vehicles that would be out as a precaution. We then entered about a 10 mile left base; landed and taxied to the gate without any further incident. Everyone seemed to be happy as they got off the airplane. I think we handled it well; tried to relight the engine; then decided that it was best to move on and prep for a single engine landing. We communicated well with each other as well as the passengers.
CRJ-200 First Officer reported on descent they received a left engine oil pressure warning; likely as a result of a flameout. A restart attempt was unsuccessful and the flight landed after declaring an emergency.