Narrative:

Noticed a fluctuation in oil pressure along with an intermediate low oil pressure light and a decrease in oil quantity. After a short monitoring period, it was obvious the engine was rapidly losing oil so I shut it down just before it ran out or the pressure fell into the 'red' zone. ATC was advised of my diversion to dfw, the emergency was declared and the equipment alerted, and all emergency, abnormal and normal checklists were complied with. A normal, single engine landing was made on 17L at dfw. An after landing inspection of the engine showed that it had 1 quart of oil remaining and that a fitting was loose on an external high pressure oil line which was the source of the leak. Maintenance informed me that the shut down, just prior to the engine falling into a 'no oil pressure' situation during its 15 mins of windmilling, probably saved the engine. There was no incident or accident involved in this occurrence.

Google
 

Original NASA ASRS Text

Title: ACR LGT INFLT ENG SHUTDOWN DUE TO LOW OIL PRESSURE QUANTITY.

Narrative: NOTICED A FLUCTUATION IN OIL PRESSURE ALONG WITH AN INTERMEDIATE LOW OIL PRESSURE LIGHT AND A DECREASE IN OIL QUANTITY. AFTER A SHORT MONITORING PERIOD, IT WAS OBVIOUS THE ENG WAS RAPIDLY LOSING OIL SO I SHUT IT DOWN JUST BEFORE IT RAN OUT OR THE PRESSURE FELL INTO THE 'RED' ZONE. ATC WAS ADVISED OF MY DIVERSION TO DFW, THE EMER WAS DECLARED AND THE EQUIP ALERTED, AND ALL EMER, ABNORMAL AND NORMAL CHKLISTS WERE COMPLIED WITH. A NORMAL, SINGLE ENG LNDG WAS MADE ON 17L AT DFW. AN AFTER LNDG INSPECTION OF THE ENG SHOWED THAT IT HAD 1 QUART OF OIL REMAINING AND THAT A FITTING WAS LOOSE ON AN EXTERNAL HIGH PRESSURE OIL LINE WHICH WAS THE SOURCE OF THE LEAK. MAINT INFORMED ME THAT THE SHUT DOWN, JUST PRIOR TO THE ENG FALLING INTO A 'NO OIL PRESSURE' SITUATION DURING ITS 15 MINS OF WINDMILLING, PROBABLY SAVED THE ENG. THERE WAS NO INCIDENT OR ACCIDENT INVOLVED IN THIS OCCURRENCE.

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.