Narrative:

After takeoff, oil quantities were checked and found to be normal (12-16 quarts). Approximately 1 hour later, the right engine was indicating 8 quarts of oil. In the next 20 mins, the oil quantity declined to 4 quarts. A radio patch to maintenance was established and our problem discussed. During the 10 min conversation, the oil further declined to 1 quart. Maintenance advised that there would be oil remaining in the right engine even after the gauge read 0 quarts. As we were still losing oil, the QRH was referenced and complied with. We elected to continue to our original destination as we were at the top of descent by then. We pulled the power to idle and declared an emergency. We requested expedited handling to runway 27L. We elected to leave the right engine running but only in idle as the oil pressure and oil temperature were within limits. When we turned final, we used only left engine thrust. At 5 mi on final, the first indication of low oil pressure was announced. We landed on runway 27L without incident. When we cleared the runway, we secured the right engine and taxied to the gate on the left engine. At the gate we shut the aircraft down.

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Original NASA ASRS Text

Title: FLT CREW OF MD80 EXPERIENCE LOSS OF OIL QUANTITY AND SUBSEQUENTLY OIL PRESSURE AT TOP OF DSCNT TO DEST. DECLARED EMER AND LANDED, SECURING ENG AFTER LNDG.

Narrative: AFTER TKOF, OIL QUANTITIES WERE CHKED AND FOUND TO BE NORMAL (12-16 QUARTS). APPROX 1 HR LATER, THE R ENG WAS INDICATING 8 QUARTS OF OIL. IN THE NEXT 20 MINS, THE OIL QUANTITY DECLINED TO 4 QUARTS. A RADIO PATCH TO MAINT WAS ESTABLISHED AND OUR PROB DISCUSSED. DURING THE 10 MIN CONVERSATION, THE OIL FURTHER DECLINED TO 1 QUART. MAINT ADVISED THAT THERE WOULD BE OIL REMAINING IN THE R ENG EVEN AFTER THE GAUGE READ 0 QUARTS. AS WE WERE STILL LOSING OIL, THE QRH WAS REFED AND COMPLIED WITH. WE ELECTED TO CONTINUE TO OUR ORIGINAL DEST AS WE WERE AT THE TOP OF DSCNT BY THEN. WE PULLED THE PWR TO IDLE AND DECLARED AN EMER. WE REQUESTED EXPEDITED HANDLING TO RWY 27L. WE ELECTED TO LEAVE THE R ENG RUNNING BUT ONLY IN IDLE AS THE OIL PRESSURE AND OIL TEMP WERE WITHIN LIMITS. WHEN WE TURNED FINAL, WE USED ONLY L ENG THRUST. AT 5 MI ON FINAL, THE FIRST INDICATION OF LOW OIL PRESSURE WAS ANNOUNCED. WE LANDED ON RWY 27L WITHOUT INCIDENT. WHEN WE CLRED THE RWY, WE SECURED THE R ENG AND TAXIED TO THE GATE ON THE L ENG. AT THE GATE WE SHUT THE ACFT DOWN.

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.