Small transport air taxi aircraft has oil pressure drop. Divert land.

Attributes
ACN	250448
Time
Date	199308
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : yip
State Reference	MI
Altitude	msl bound lower : 9000 msl bound upper : 9000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : dtw
Operator	common carrier : air taxi
Make Model Name	Small Transport, Low Wing, 2 Turboprop Eng
Flight Phase	cruise other
Route In Use	approach : visual enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air taxi
Function	flight crew : single pilot
Qualification	pilot : commercial pilot : instrument pilot : cfi
Experience	flight time last 90 days : 150 flight time total : 3700 flight time type : 25
ASRS Report	250448
Person 2
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

I departed fwa on a part 135 IFR trip going to yhm, hamilton, ontario. Upon reaching 9000 ft I reduced power. Oil pressure fell to 45 pounds from 92 pounds, 40 being 'minimum' for engine operation. I asked controller for direct yip and told them I had an oil pressure problem and wanted to go there to have my maintenance people look at it. I continued to willow run. Approximately 15 mi from airport, oil pressure went to 41 pounds. I was cleared for the visual then cleared to land when it went to 28 pounds. On my landing I feathered the propeller and shut the engine down. At no time did I declare an emergency - - I saw no need to.

Original NASA ASRS Text

Title: SMT AIR TAXI ACFT HAS OIL PRESSURE DROP. DIVERT LAND.

Narrative: I DEPARTED FWA ON A PART 135 IFR TRIP GOING TO YHM, HAMILTON, ONTARIO. UPON REACHING 9000 FT I REDUCED PWR. OIL PRESSURE FELL TO 45 LBS FROM 92 LBS, 40 BEING 'MINIMUM' FOR ENG OP. I ASKED CTLR FOR DIRECT YIP AND TOLD THEM I HAD AN OIL PRESSURE PROB AND WANTED TO GO THERE TO HAVE MY MAINT PEOPLE LOOK AT IT. I CONTINUED TO WILLOW RUN. APPROX 15 MI FROM ARPT, OIL PRESSURE WENT TO 41 LBS. I WAS CLRED FOR THE VISUAL THEN CLRED TO LAND WHEN IT WENT TO 28 LBS. ON MY LNDG I FEATHERED THE PROP AND SHUT THE ENG DOWN. AT NO TIME DID I DECLARE AN EMER - - I SAW NO NEED TO.

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.