CRJ200 first officer reports master warning and low engine oil pressure shortly after takeoff. The w...

Narrative:

Shortly after takeoff the master warning light and chime went off and an engine low oil pressure warning was displayed. After several seconds the warning disappeared; only to reappear moments later. The captain (pilot monitoring) elected to divert to our planned takeoff alternate airport; and declared an emergency. The warning disappeared again and did not reappear for the remainder of the flight. After going through the QRH the captain decided not to shut down the engine; as it was then indicating within normal limits; although the oil pressure was fluctuating. I continued flying and he communicated with the dispatcher (to the best of my knowledge). After just 18 minutes aloft I landed the aircraft (overweight). I was asked to file this report in case we did not communicate our diversion with our dispatcher. To the best of my recollection the captain did contact the dispatcher. Our landing was at our takeoff alternate.

Original NASA ASRS Text

Title: CRJ200 First Officer reports Master Warning and low engine oil pressure shortly after takeoff. The warning disappeared but the oil pressure continued to fluctuate prompting the crew to divert to their takeoff alternate.

Narrative: Shortly after takeoff the master warning light and chime went off and an engine low oil pressure warning was displayed. After several seconds the warning disappeared; only to reappear moments later. The Captain (Pilot Monitoring) elected to divert to our planned takeoff alternate airport; and declared an emergency. The warning disappeared again and did not reappear for the remainder of the flight. After going through the QRH the Captain decided not to shut down the engine; as it was then indicating within normal limits; although the oil pressure was fluctuating. I continued flying and he communicated with the Dispatcher (to the best of my knowledge). After just 18 minutes aloft I landed the aircraft (overweight). I was asked to file this report in case we did not communicate our diversion with our Dispatcher. To the best of my recollection the Captain did contact the Dispatcher. Our landing was at our takeoff alternate.

Data retrieved from NASA's ASRS site as of April 2012 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

Attributes
ACN	907109
Time
Date	201008
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Aircraft 1
Make Model Name	Regional Jet 200 ER/LR (CRJ200)
Operating Under FAR Part	Part 121
Flight Phase	Climb Initial Climb
Flight Plan	IFR
Component
Aircraft Component	Powerplant Lubrication System
Person 1
Function	Pilot Flying First Officer
Qualification	Flight Crew Commercial
Events
Anomaly	Aircraft Equipment Problem Less Severe

CRJ200 first officer reports master warning and low engine oil pressure shortly after takeoff. The warning disappeared but the oil pressure continued to fluctuate prompting the crew to divert to their takeoff alternate.