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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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Air carrier medium large transport in-flight engine shutdown due to zero indicated oil pressure. Post flight inspection revealed a popped circuit breaker that powers the oil pressure gauge.
| Attributes | |
| ACN | 175778 |
| Time | |
| Date | 199104 |
| Day | Sat |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : mke |
| State Reference | WI |
| Altitude | msl bound lower : 31000 msl bound upper : 31000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zau |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 163 flight time total : 13728 flight time type : 9494 |
| ASRS Report | 175778 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : declared emergency none taken : anomaly accepted |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
Narrative:
At FL310 right oil pressure went to zero. Followed cockpit operating manual and shut down engine. Procedure calls for zero oil pressure to shut down engine, go to failed engine checklist. However, next procedure calls for a check of annunciator light and if it test normally to operate normally. We followed procedure and shut engine down and landed without incident. The company needs to change this procedure and reverse order of 'communication so the annunciator light is checked first. After landing maintenance found a xfer circuit breaker popped which controled oil pressure, however, this circuit breaker controled the hydraulic gauges and they were normal in the air. I feel like the circuit breaker popped after the engine was shutdown or when maintenance was changing the gauges on the ground. We had no indication of any other malfunction in the air from this controling transformer.
Original NASA ASRS Text
Title: ACR MLG INFLT ENGINE SHUTDOWN DUE TO ZERO INDICATED OIL PRESSURE. POST FLT INSPECTION REVEALED A POPPED CIRCUIT BREAKER THAT POWERS THE OIL PRESSURE GAUGE.
Narrative: AT FL310 R OIL PRESSURE WENT TO ZERO. FOLLOWED COCKPIT OPERATING MANUAL AND SHUT DOWN ENG. PROC CALLS FOR ZERO OIL PRESSURE TO SHUT DOWN ENG, GO TO FAILED ENG CHKLIST. HOWEVER, NEXT PROC CALLS FOR A CHK OF ANNUNCIATOR LIGHT AND IF IT TEST NORMALLY TO OPERATE NORMALLY. WE FOLLOWED PROC AND SHUT ENG DOWN AND LANDED WITHOUT INCIDENT. THE COMPANY NEEDS TO CHANGE THIS PROC AND REVERSE ORDER OF 'COM SO THE ANNUNCIATOR LIGHT IS CHKED FIRST. AFTER LNDG MAINT FOUND A XFER CIRCUIT BREAKER POPPED WHICH CTLED OIL PRESSURE, HOWEVER, THIS CIRCUIT BREAKER CTLED THE HYD GAUGES AND THEY WERE NORMAL IN THE AIR. I FEEL LIKE THE CIRCUIT BREAKER POPPED AFTER THE ENG WAS SHUTDOWN OR WHEN MAINT WAS CHANGING THE GAUGES ON THE GND. WE HAD NO INDICATION OF ANY OTHER MALFUNCTION IN THE AIR FROM THIS CTLING TRANSFORMER.
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.