Emergency landing, skid on contact.

Attributes
ACN	98593
Time
Date	198811
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : lvk
State Reference	CA
Altitude	msl bound lower : 397 msl bound upper : 5500
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : oak tower : lvk
Operator	general aviation : personal
Make Model Name	Small Aircraft, Low Wing, 1 Eng, Retractable Gear
Flight Phase	cruise other
Route In Use	enroute : on vectors
Flight Plan	None
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : private
Experience	flight time last 90 days : 50 flight time total : 150
ASRS Report	98593
Person 2
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa
Resolutory Action	flight crew : declared emergency none taken : unable other
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

Northbound, 20 minutes after departure from san jose reid hillview , engine oil pressure began to drop slowly into the yellow caution mark. I requested vectors to the closest airport for immediately landing from ATC. I was given vectors to livermore airport which was 8-10 miles south of our position. An emergency was not declared. Engine oil pressure continued to drop as I began my approach to land, but pressure never entered the red warning mark. The engine was never shut down. As I touched down, the plane began to skid to the left. Though the plane's nose was parallel with the runway centerline, it still skidded to the left. Correction was given and the plane skidded to the right. As the plane's speed decreased, the plane became more ctlable and I safely taxied off the runway. Post flight inspection revealed a broken propeller governor oil line which spewed oil out of the cowling across the plane belly. Also noticeable was oil on the two main and front landing gear. It appears the oil on the tires caused the plane to skid on landing. After the plane slowed I was able to control the skid.

Original NASA ASRS Text

Title: EMERGENCY LNDG, SKID ON CONTACT.

Narrative: NBOUND, 20 MINUTES AFTER DEP FROM SAN JOSE REID HILLVIEW , ENGINE OIL PRESSURE BEGAN TO DROP SLOWLY INTO THE YELLOW CAUTION MARK. I REQUESTED VECTORS TO THE CLOSEST AIRPORT FOR IMMEDIATELY LANDING FROM ATC. I WAS GIVEN VECTORS TO LIVERMORE ARPT WHICH WAS 8-10 MILES SOUTH OF OUR POSITION. AN EMER WAS NOT DECLARED. ENGINE OIL PRESSURE CONTINUED TO DROP AS I BEGAN MY APPROACH TO LAND, BUT PRESSURE NEVER ENTERED THE RED WARNING MARK. THE ENGINE WAS NEVER SHUT DOWN. AS I TOUCHED DOWN, THE PLANE BEGAN TO SKID TO THE LEFT. THOUGH THE PLANE'S NOSE WAS PARALLEL WITH THE RWY CENTERLINE, IT STILL SKIDDED TO THE LEFT. CORRECTION WAS GIVEN AND THE PLANE SKIDDED TO THE RIGHT. AS THE PLANE'S SPEED DECREASED, THE PLANE BECAME MORE CTLABLE AND I SAFELY TAXIED OFF THE RWY. POST FLT INSPECTION REVEALED A BROKEN PROP GOVERNOR OIL LINE WHICH SPEWED OIL OUT OF THE COWLING ACROSS THE PLANE BELLY. ALSO NOTICEABLE WAS OIL ON THE TWO MAIN AND FRONT LNDG GEAR. IT APPEARS THE OIL ON THE TIRES CAUSED THE PLANE TO SKID ON LNDG. AFTER THE PLANE SLOWED I WAS ABLE TO CONTROL THE SKID.

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