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A B737-800 in cruise at FL370 declared an emergency due to loss of 'B' hydraulic pressure and quantity. Caused by a failed #2 engine driven pump.
| Attributes | |
| ACN | 562490 |
| Time | |
| Date | 200210 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : zzz.artcc |
| State Reference | US |
| Altitude | msl single value : 37000 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zzz.artcc tower : sfo.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B737-800 |
| 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 | 562490 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | flight crew : declared emergency |
| Consequence | other other |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
At cruise engine #2 hydraulic pump failed. Shortly after that the 'B' system quantity went to zero. Completed abnormal procedures for loss of hydraulic pressure. Talked with dispatcher ZZZ1 on radio. Concurred that continuing to ZZZ2 was best. Advised ATC, declared emergency, requested arff equipment at ZZZ1. Landing and taxi in were uneventful. Callback conversation with reporter revealed the following information: the reporter stated the engine driven hydraulic pump on the right engine had a case crack or a fitting on the pump crack causing the loss of hydraulic pressure and quantity.
Original NASA ASRS Text
Title: A B737-800 IN CRUISE AT FL370 DECLARED AN EMER DUE TO LOSS OF 'B' HYD PRESSURE AND QUANTITY. CAUSED BY A FAILED #2 ENG DRIVEN PUMP.
Narrative: AT CRUISE ENG #2 HYD PUMP FAILED. SHORTLY AFTER THAT THE 'B' SYS QUANTITY WENT TO ZERO. COMPLETED ABNORMAL PROCS FOR LOSS OF HYD PRESSURE. TALKED WITH DISPATCHER ZZZ1 ON RADIO. CONCURRED THAT CONTINUING TO ZZZ2 WAS BEST. ADVISED ATC, DECLARED EMER, REQUESTED ARFF EQUIP AT ZZZ1. LNDG AND TAXI IN WERE UNEVENTFUL. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE ENG DRIVEN HYD PUMP ON THE R ENG HAD A CASE CRACK OR A FITTING ON THE PUMP CRACK CAUSING THE LOSS OF HYD PRESSURE AND QUANTITY.
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.