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An MD80 crew experienced decreased left engine oil pressure; declared an emergency and returned to the departure airport with the engine at idle.
| Attributes | |
| ACN | 669688 |
| Time | |
| Date | 200508 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : zzz1.airport |
| State Reference | US |
| Altitude | msl single value : 24000 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zzz1.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Series (DC-9-80) Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| ASRS Report | 669688 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : low oil pressure light |
| Resolutory Action | flight crew : landed in emergency condition flight crew : declared emergency other |
| Consequence | other other |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
At approximately XA00 while climbing through FL240 the master caution light came on accompanied by the left oil press low light. Other indications included the oil pressure gauge dropping to zero and the oil temperature dropping to approximately 25 degrees. We requested and were cleared to level at FL240 and slow while we worked the checklist. I elected to operate with the left engine at idle and returned to ZZZ1. Due to WX building and the fact that we would be landing slightly overweight; I elected to declare an emergency. We touched down on runway 36L smoothly and uneventfully and cleared the runway. We then shut down the left engine and with all other indications normal; continued to the gate where we swapped aircraft and continued on to ZZZ2. I spoke with maintenance tech and they advised me that they replaced the number one engine. Callback conversation with reporter revealed the following information: reporter stated that oil quantity remained full. Air carrier maintenance reported to him that the oil pump failed.
Original NASA ASRS Text
Title: AN MD80 CREW EXPERIENCED DECREASED L ENG OIL PRESSURE; DECLARED AN EMER AND RETURNED TO THE DEP ARPT WITH THE ENG AT IDLE.
Narrative: AT APPROX XA00 WHILE CLBING THROUGH FL240 THE MASTER CAUTION LIGHT CAME ON ACCOMPANIED BY THE L OIL PRESS LOW LIGHT. OTHER INDICATIONS INCLUDED THE OIL PRESSURE GAUGE DROPPING TO ZERO AND THE OIL TEMP DROPPING TO APPROX 25 DEGS. WE REQUESTED AND WERE CLEARED TO LEVEL AT FL240 AND SLOW WHILE WE WORKED THE CHKLIST. I ELECTED TO OPERATE WITH THE L ENGINE AT IDLE AND RETURNED TO ZZZ1. DUE TO WX BUILDING AND THE FACT THAT WE WOULD BE LNDG SLIGHTLY OVERWEIGHT; I ELECTED TO DECLARE AN EMERGENCY. WE TOUCHED DOWN ON RWY 36L SMOOTHLY AND UNEVENTFULLY AND CLRED THE RWY. WE THEN SHUT DOWN THE L ENGINE AND WITH ALL OTHER INDICATIONS NORMAL; CONTINUED TO THE GATE WHERE WE SWAPPED ACFT AND CONTINUED ON TO ZZZ2. I SPOKE WITH MAINT TECH AND THEY ADVISED ME THAT THEY REPLACED THE NUMBER ONE ENGINE. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR STATED THAT OIL QUANTITY REMAINED FULL. ACR MAINT RPTED TO HIM THAT THE OIL PUMP FAILED.
Data retrieved from NASA's ASRS site as of January 2009 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.