Air Carrier flight crew reported a 'Right Eng Oil Press' EICAS message during cruise due to oil pressure fluctuation. The flight crew requested special handling to a diversion airport where a safe landing was completed.
Synopsis
Air Carrier flight crew reported a 'Right Eng Oil Press' EICAS message during cruise due to oil pressure fluctuation. The flight crew requested special handling to a diversion airport where a safe landing was completed.
Narrative
We were level at FL280 at approximately XA:15 local time when the R ENG OIL PRESS warning message appeared. The oil pressure was fluctuating from red to green initially. Because we knew we may have to shut down that right engine at any time; we [requested priority handling]. We announced our intention to divert. The Captain had been there before and knew there were long enough runways for a single engine flaps 20 landing should the need have arisen.As we descended; the oil pressure in the right engine indicated green until we got quite close to the airfield. After considering all of the input from the materials and crew; we determined the safest course of action was to brief the approach as a flaps 20 landing and fly the aircraft accordingly; while monitoring the right engine oil pressure. I; nor the Captain felt it was safe to run another QRH that close in time to landing the aircraft. We felt the safest course of action was to get the aircraft on the ground as soon as possible. We also determined that we could safely keep the right engine running at idle in the event we had to do a go-around. I felt that a flaps 20 landing was the safest course of action because at any point in time we may have been forced to shut down that right engine and did not want to be at more than flaps 20 in the event that need arose. This was a ferry flight so there were no issues with any passengers. The landing was uneventful. [I suggest] we check oil pump on a ferry flight.
Second reporter narrative
We were level at FL 280 at approximately XA:15 local time when the R ENG OIL PRESS warning message appeared. The oil pressure was fluctuating from red to green initially. Because we knew we may have to shut down that right engine at any time; we [requested priority handling]. We announced our intention to divert. The Captain had been there before and knew there were long enough runways for a single engine flaps 20 landing should the need have arisen. As we descended; the oil pressure in the right engine indicated green until we got quite close to the airfield. After considering all of the input from the materials and crew; we determined the safest course of action was to brief the approach as a flaps 20 landing and fly the aircraft accordingly; while monitoring the right engine oil pressure. I; nor the Captain felt it was safe to run another QRH that close in time to landing the aircraft. We felt the safest course of action was to get the aircraft on the ground as soon as possible. We also determined that we could safely keep the right engine running at idle in the event we had to do a go around. I felt that a flaps 20 landing was the safest course of action because at any point in time we may have been forced to shut down that right engine and did not want to be at more than flaps 20 in the event that need arose. This was a ferry flight so there were no issues with any passengers. The landing was uneventful. [I suggest] we check oil pump on a ferry flight.
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Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.