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An air carrier medium large transport lost half of its hydraulic system. It declared an emergency and landed en route.
| Attributes | |
| ACN | 249035 |
| Time | |
| Date | 199308 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : mlu |
| State Reference | LA |
| Environment | |
| Flight Conditions | Marginal |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zme |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | cruise other 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 : 180 flight time total : 8000 flight time type : 3820 |
| ASRS Report | 249035 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : flight engineer pilot : instrument |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : declared emergency none taken : unable other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
Narrative:
In cruise at FL310, left hydraulic pressure low light illuminated. Noticed pressure and quantity decreasing in left hydraulic system. Turned engine driven pump and transfer pump off for left hydraulic system. Followed pilots operating manual abnormal procedure, declared an emergency, and landed uneventfully at mlu. Taxied to the gate and deplaned. Problem was leaking fitting/hose in tail section.
Original NASA ASRS Text
Title: AN ACR MLG LOST HALF OF ITS HYD SYS. IT DECLARED AN EMER AND LANDED ENRTE.
Narrative: IN CRUISE AT FL310, L HYD PRESSURE LOW LIGHT ILLUMINATED. NOTICED PRESSURE AND QUANTITY DECREASING IN L HYD SYS. TURNED ENG DRIVEN PUMP AND TRANSFER PUMP OFF FOR L HYD SYS. FOLLOWED PLTS OPERATING MANUAL ABNORMAL PROC, DECLARED AN EMER, AND LANDED UNEVENTFULLY AT MLU. TAXIED TO THE GATE AND DEPLANED. PROB WAS LEAKING FITTING/HOSE IN TAIL SECTION.
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.