C501SP executed a precautionary engine shutdown after discovering low engine oil pressure.

Attributes
ACN	778091
Time
Date	200803
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	msl single value : 25000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zzz.artcc
Operator	general aviation : personal
Make Model Name	Citation I/SP
Operating Under FAR Part	Part 91
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	other
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi pilot : atp pilot : multi engine
Experience	flight time last 90 days : 90 flight time total : 17300 flight time type : 2850
ASRS Report	778091
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa other flight crewb
Resolutory Action	flight crew : diverted to another airport
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

My co-captain and I realized we were losing oil pressure on our r engine. All other engine parameters appeared normal but at approximately 60 psi I decided to make a precautionary shutdown of the engine. I was flying and my first officer advised ZZZ center of our situation. We did not declare an emergency but asked for priority handling at ZZZ1 as we felt we were under control and landed uneventfully. Our only concern (beyond the successful arrival into ZZZ1) was any delays or diversions our situation might have caused to other aircraft. From our standpoint; it was 'textbook' and everyone did their job very well.

Original NASA ASRS Text

Title: C501SP EXECUTED A PRECAUTIONARY ENGINE SHUTDOWN AFTER DISCOVERING LOW ENGINE OIL PRESSURE.

Narrative: MY CO-CAPT AND I REALIZED WE WERE LOSING OIL PRESSURE ON OUR r ENG. ALL OTHER ENG PARAMETERS APPEARED NORMAL BUT AT APPROX 60 PSI I DECIDED TO MAKE A PRECAUTIONARY SHUTDOWN OF THE ENG. I WAS FLYING AND MY FO ADVISED ZZZ CTR OF OUR SITUATION. WE DID NOT DECLARE AN EMER BUT ASKED FOR PRIORITY HANDLING AT ZZZ1 AS WE FELT WE WERE UNDER CTL AND LANDED UNEVENTFULLY. OUR ONLY CONCERN (BEYOND THE SUCCESSFUL ARR INTO ZZZ1) WAS ANY DELAYS OR DIVERSIONS OUR SITUATION MIGHT HAVE CAUSED TO OTHER ACFT. FROM OUR STANDPOINT; IT WAS 'TEXTBOOK' AND EVERYONE DID THEIR JOB VERY WELL.

Data retrieved from NASA's ASRS site as of May 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.