Narrative:

On a flight plan route over stl going north to alo, my copilot noticed that the right engine oil psi indication was wildly fluctuating in the mid 40 psi range (left was steady at 61 psi). Over alo VOR at +FL280, the right oil psi was down to mid 30 psi range. I called our maintenance control and they suspected this was not just an indicator problem. After alo on the kasper 2 STAR into minneapolis, still at FL280, the oil psi dropped to mid 20 psi range and we got an aural warning as well. Our QRH was consulted. Emergency section 'low oil psi,' after retarding the right thrust to idle, the oil psi was back up to the mid 30 psi range. We asked for lower and I asked for priority sequencing into minneapolis. Otherwise we would have a 10 min hold at kasper intersection. Over ziggy intersection we received another aural warning and the psi was again down to 25 psi, so we performed an engine shutdown checklist. Declared an emergency with crash fire rescue equipment standing by. Briefed my flight attendant, the passenger, called minneapolis operations and dispatch for new landing data. Ran the single engine approach checks and all other checklists. We landed on runway 30L. The mechanic svced the engine with 5 quarts oil with no signs of leaking and no smoking of the engine during starting and 40 mins of engine run had shut down. We got a ferry permit and flew back to cvg.

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Original NASA ASRS Text

Title: A CL65 FLC PERFORMS AN INFLT ENG SHUTDOWN AND DECLARES AN EMER AFTER THE #2 ENG LOW OIL PRESSURE WARNING COMES ON FOR THE SECOND TIME 50 NM S OF MSP, MN.

Narrative: ON A FLT PLAN RTE OVER STL GOING N TO ALO, MY COPLT NOTICED THAT THE R ENG OIL PSI INDICATION WAS WILDLY FLUCTUATING IN THE MID 40 PSI RANGE (L WAS STEADY AT 61 PSI). OVER ALO VOR AT +FL280, THE R OIL PSI WAS DOWN TO MID 30 PSI RANGE. I CALLED OUR MAINT CTL AND THEY SUSPECTED THIS WAS NOT JUST AN INDICATOR PROB. AFTER ALO ON THE KASPER 2 STAR INTO MINNEAPOLIS, STILL AT FL280, THE OIL PSI DROPPED TO MID 20 PSI RANGE AND WE GOT AN AURAL WARNING AS WELL. OUR QRH WAS CONSULTED. EMER SECTION 'LOW OIL PSI,' AFTER RETARDING THE R THRUST TO IDLE, THE OIL PSI WAS BACK UP TO THE MID 30 PSI RANGE. WE ASKED FOR LOWER AND I ASKED FOR PRIORITY SEQUENCING INTO MINNEAPOLIS. OTHERWISE WE WOULD HAVE A 10 MIN HOLD AT KASPER INTXN. OVER ZIGGY INTXN WE RECEIVED ANOTHER AURAL WARNING AND THE PSI WAS AGAIN DOWN TO 25 PSI, SO WE PERFORMED AN ENG SHUTDOWN CHKLIST. DECLARED AN EMER WITH CFR STANDING BY. BRIEFED MY FLT ATTENDANT, THE PAX, CALLED MINNEAPOLIS OPS AND DISPATCH FOR NEW LNDG DATA. RAN THE SINGLE ENG APCH CHKS AND ALL OTHER CHKLISTS. WE LANDED ON RWY 30L. THE MECH SVCED THE ENG WITH 5 QUARTS OIL WITH NO SIGNS OF LEAKING AND NO SMOKING OF THE ENG DURING STARTING AND 40 MINS OF ENG RUN HAD SHUT DOWN. WE GOT A FERRY PERMIT AND FLEW BACK TO CVG.

Data retrieved from NASA's ASRS site as of July 2007 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.