Narrative:

This was a precautionary shutdown of the l-hand engine due to an indication of very high oil pressure. No emergency was declared.

Google
 

Original NASA ASRS Text

Title: A LEARJET 35 IN CRUISE AT FL430 SHUT DOWN #1 ENG DUE TO HIGH ENG OIL PRESSURE. CAUSE UNKNOWN.

Narrative: THIS WAS A PRECAUTIONARY SHUTDOWN OF THE L-HAND ENG DUE TO AN INDICATION OF VERY HIGH OIL PRESSURE. NO EMER WAS DECLARED.

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.