CRJ900 flight crew reported they shut down an engine due to loss of oil pressure during climb and returned to their departure airport.
Synopsis
CRJ900 flight crew reported they shut down an engine due to loss of oil pressure during climb and returned to their departure airport.
Narrative
The flight started out with a normal pushback at ZZZ. The Captain instructed me to start both engines and perform all normal checks and procedures. During the taxi the Captain pointed out a status message for oil quantity and verified the oil was a proper quantity. Take off and after takeoff included all normal procedures. While initiating a climb from 15000 ft. to 21000 ft. we received a L ENG OIL PRESS Warning message. We leveled off at 17000 ft. and the Captain designated roles and had me run the QRH. The L ENG OIL PRESS QRH led us to an in-flight engine shut down. We completed the associated checklists while receiving vectors back to ZZZ. We configured the airplane in accordance to the QRH and made a single engine approach and landing. After landing we stopped on the runway; asked the trucks to check for fire or external damage. Upon verification of no fire or damage we taxied to the gate and shut down the right engine then completed the shutdown procedure and checklists. This was my 3rd leg of initial operating experience with no PF experience. The Captain assigned me with tasks that he knew I could manage while he worked on flying the airplane and coordinating our return to ZZZ. L ENG OIL PRESS warning indicating loss of oil pressure.
Second reporter narrative
Flight ABCD on Aircraft X. Pushed out of Gate X in ZZZ. Started the left engine first and then the right with completely normal indications. No non-normal EICAS messages presented during engine start or immediately after. Taxied out to Runway XX on Taxiway 1. On the taxiway we received a L OIL LEVEL LO" status message. We checked the oil quantity on the aircraft and verified via QRH page 0-23 that while the oil was low; it was still within limitations. I made the decision to continue and we subsequently had a normal takeoff and initial climb out. At approximately 15000 ft. we received a "L ENG OIL PRESS" warning message. We immediately checked the oil quantity again and it now read 15%. I called for the QRH procedure for the warning message. The procedure called for us to idle the appropriate engine and then to cross reference the other engine oil indications.Upon seeing that our oil pressure was also now below limits we were directed to the "Engine Failure / In-Flight Engine Shutdown" checklist. As it was my FO's third leg of OE and had no PF experience yet; I made the decision to keep control of the aircraft and assume radio control while he worked the checklist. While he started the checklist; I [requested priority handling] with ZZZ Center and began to coordinate our return to ZZZ with dispatch and the flight attendants.Dispatch agreed with the call to return to ZZZ and the flight attendants were fully briefed on [priority handling]. As we flew back towards ZZZ; we completed the checklist followed by all normal procedures and checklists in preparation for approach and landing. We were vectored onto the visual approach to [Runway] YY which we briefed and backed up with the ILS. After the single engine approach and landing we stopped the aircraft on the runway just prior to the [Taxiway] 2 high speed. Airport Rescue and Firefighting met us on the runway and after completion of a full inspection; cleared us to continue to a gate. We taxied on taxiways 2; 3; and 4 to Ramp X and ultimately parked at XXX. The incident was written up and the aircraft left with maintenance. Slow leak undetectable to the crew. Adjust 'L OIL LEVEL LO' status message check procedure to include a trend check after initial quantity check"
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Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.