CRJ-900 air carrier crew reported an engine oil malfunction during cruise flight. The crew diverted to an alternate airport and landed and a hydraulic leak was discovered as well.
Synopsis
CRJ-900 air carrier crew reported an engine oil malfunction during cruise flight. The crew diverted to an alternate airport and landed and a hydraulic leak was discovered as well.
Narrative
We pushed back and took off with no abnormal conditions or leaking fluid left behind that we could see. About 15 minutes after takeoff we noticed that the right engine oil quantity low level had turned on. There after we started noting time and amount loss. Maintenance Control and dispatch was notified through ACARS of our loss of oil and status of the plane. Losses appeared to be at first about a percent every 5 minutes that quickly turned into a percent loss per minute. There were no abnormal other indications. Through dispatch and maintenance it was decided that diverting to ZZZ was the best option at that time and we were the closest to ZZZ at that time. Oil indication for the number 2 engine were at 15 percent on short final. Initially hydraulic levels were fine but as we found on the ground our quantity with the engine off was 10% with no hydraulic low caution messages appearing.Cause: This was caused due to maintenance previously done on the aircraft's engine driven oil pump. This was also due to incorrect installation or a damaged part being installed on the aircraft is what we heard from maintenance as well as a cut return hydraulic line.
Second reporter narrative
While conducting a very flight from ZZZ2 to ZZZ1 we experienced a substation loss of engine oil on the right engine. Approximately .5% to 1% per minute. We communicate with dispatch and maintenance control and we're instructed to divert to ZZZ. Upon landing there was a hydronic leak discovered as well. Cause: Maintenance in ZZZ said the hydraulic pump was likely damaged when it was installed in ZZZ2 causing it to fail in flight.
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Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.