C425 crew had #1 engine oil cooler fail in ZID class east airspace.

Attributes
ACN	508837
Time
Date	200104
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : lou.airport
State Reference	KY
Altitude	msl single value : 9500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zid.artcc artcc : zmp.artcc
Operator	general aviation : corporate
Make Model Name	Conquest I/Conquest II
Operating Under FAR Part	Part 91
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : corporate
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 50 flight time total : 11500 flight time type : 2200
ASRS Report	508837
Person 2
Affiliation	company : corporate
Function	flight crew : first officer
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : oil pressure indicator other flight crewa other flight crewb
Resolutory Action	flight crew : landed in emergency condition flight crew : diverted to another airport none taken : detected after the fact other
Consequence	other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

Going through 9500 ft MSL climbing to FL220, left engine oil pressure flickered 5 psi (90 psi to 85 psi). Going through 10000 ft, oil pressure fluctuated 60 psi to 90 psi, then fell to 60 psi. I then requested to return to lou. I was asked if I was declaring an emergency. I stated no, but would like for equipment standing by. By then, oil pressure was close to red line, so I shut down and secured left engine. (Oil cooler hose less than 2 yrs old had ruptured.)

Original NASA ASRS Text

Title: C425 CREW HAD #1 ENG OIL COOLER FAIL IN ZID CLASS E AIRSPACE.

Narrative: GOING THROUGH 9500 FT MSL CLBING TO FL220, L ENG OIL PRESSURE FLICKERED 5 PSI (90 PSI TO 85 PSI). GOING THROUGH 10000 FT, OIL PRESSURE FLUCTUATED 60 PSI TO 90 PSI, THEN FELL TO 60 PSI. I THEN REQUESTED TO RETURN TO LOU. I WAS ASKED IF I WAS DECLARING AN EMER. I STATED NO, BUT WOULD LIKE FOR EQUIP STANDING BY. BY THEN, OIL PRESSURE WAS CLOSE TO RED LINE, SO I SHUT DOWN AND SECURED L ENG. (OIL COOLER HOSE LESS THAN 2 YRS OLD HAD RUPTURED.)

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.