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Flight crew of a B767 declared an emergency and returned right after leveling off at cruise altitude due to a hydraulic leak warning.
| Attributes | |
| ACN | 449696 |
| Time | |
| Date | 199909 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : ord.airport |
| State Reference | IL |
| Altitude | msl single value : 31000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zau.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B767 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 449696 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument pilot : multi engine |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : hydraulic quantity warning other flight crewa other flight crewb |
| Resolutory Action | flight crew : declared emergency flight crew : landed in emergency condition |
| Consequence | other |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
Location: 80 mi north of ord. We had just leveled at FL310 when EICAS message for center hydraulic quantity came on. We checked and confirmed a leak in the center system. We ran all procedures and declared an emergency to return to ord. We dumped around 34000 pounds of fuel before landing. Crash fire rescue equipment was available and normal landing made. Aircraft was then tugged to the gate, passenger deplaned, and another aircraft obtained. Overweight landing made at 325000 pounds.
Original NASA ASRS Text
Title: FLC OF A B767 DECLARED AN EMER AND RETURNED RIGHT AFTER LEVELING OFF AT CRUISE ALT DUE TO A HYD LEAK WARNING.
Narrative: LOCATION: 80 MI N OF ORD. WE HAD JUST LEVELED AT FL310 WHEN EICAS MESSAGE FOR CTR HYD QUANTITY CAME ON. WE CHKED AND CONFIRMED A LEAK IN THE CTR SYS. WE RAN ALL PROCS AND DECLARED AN EMER TO RETURN TO ORD. WE DUMPED AROUND 34000 LBS OF FUEL BEFORE LNDG. CFR WAS AVAILABLE AND NORMAL LNDG MADE. ACFT WAS THEN TUGGED TO THE GATE, PAX DEPLANED, AND ANOTHER ACFT OBTAINED. OVERWT LNDG MADE AT 325000 LBS.
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.