CRJ200 flight crew has EICAS warning 'engine oil.' flight crew performs the appropriate QRH procedur...

Attributes
ACN	686980
Time
Date	200602
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	msl single value : 34000
Environment
Flight Conditions	IMC
Weather Elements	Snow
Light	Night
Aircraft 1
Controlling Facilities	artcc : zzz.artcc
Operator	common carrier : air carrier
Make Model Name	Regional Jet 200 ER&LR
Operating Under FAR Part	Part 121
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Experience	flight time last 90 days : 2000 flight time total : 6500
ASRS Report	686980
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	aircraft equipment other aircraft equipment : eicas warning other flight crewa other flight crewb
Resolutory Action	controller : issued new clearance flight crew : declared emergency flight crew : diverted to another airport
Supplementary
Problem Areas	Company Flight Crew Human Performance Aircraft
Primary Problem	Aircraft

Narrative:

Upon reaching FL340 we were in process of accelerating to cruise speed and completing the cruise check when the triple chime 'engine oil' with left oil pressure warning message illuminated. The left engine oil pressure was fluctuating between approximately 23-28 psi. First officer completed the QRH. The left engine thrust was reduced to idle per QRH and the oil pressure raised to 33-38 psi and oil temperature of 112 degrees. We requested FL280 from ATC and were cleared to FL280; which allowed a slow descent needed because of the single engine situation. I was able to maintain no more than 74% N1 and still have oil pressure 30-33 psi. We got ATC clearance direct to ZZZ after telling ATC that we had a left engine low pressure indication and had to operate at reduced thrust but both engines were operating. Our approach and landing was normal and we landed within 30 mins. I also briefed the flight attendants and the passenger after our clearance was received. During the approach briefing; the first officer and I discussed that if we had to go around; we would plan a single engine go around scenario; due to the reduced thrust available on the left engine.

Original NASA ASRS Text

Title: CRJ200 FLT CREW HAS EICAS WARNING 'ENG OIL.' FLT CREW PERFORMS THE APPROPRIATE QRH PROCS AND DIVERTS TO THE MOST SUITABLE FIELD. THE TWR DECLARED AN EMER.

Narrative: UPON REACHING FL340 WE WERE IN PROCESS OF ACCELERATING TO CRUISE SPD AND COMPLETING THE CRUISE CHK WHEN THE TRIPLE CHIME 'ENG OIL' WITH L OIL PRESSURE WARNING MESSAGE ILLUMINATED. THE L ENG OIL PRESSURE WAS FLUCTUATING BTWN APPROX 23-28 PSI. FO COMPLETED THE QRH. THE L ENG THRUST WAS REDUCED TO IDLE PER QRH AND THE OIL PRESSURE RAISED TO 33-38 PSI AND OIL TEMP OF 112 DEGS. WE REQUESTED FL280 FROM ATC AND WERE CLRED TO FL280; WHICH ALLOWED A SLOW DSCNT NEEDED BECAUSE OF THE SINGLE ENG SITUATION. I WAS ABLE TO MAINTAIN NO MORE THAN 74% N1 AND STILL HAVE OIL PRESSURE 30-33 PSI. WE GOT ATC CLRNC DIRECT TO ZZZ AFTER TELLING ATC THAT WE HAD A L ENG LOW PRESSURE INDICATION AND HAD TO OPERATE AT REDUCED THRUST BUT BOTH ENGS WERE OPERATING. OUR APCH AND LNDG WAS NORMAL AND WE LANDED WITHIN 30 MINS. I ALSO BRIEFED THE FLT ATTENDANTS AND THE PAX AFTER OUR CLRNC WAS RECEIVED. DURING THE APCH BRIEFING; THE FO AND I DISCUSSED THAT IF WE HAD TO GO AROUND; WE WOULD PLAN A SINGLE ENG GAR SCENARIO; DUE TO THE REDUCED THRUST AVAILABLE ON THE L ENG.

Data retrieved from NASA's ASRS site as of January 2009 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.

CRJ200 flight crew has EICAS warning 'engine oil.' flight crew performs the appropriate QRH procedures and diverts to the most suitable field. The tower declared an emergency.