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B757 flight crew experienced a left engine hydraulic ovht EICAS advisory message just prior to descent. Crew landed safely and was informed by maintenance that the pump is extremely hot and leaking fluid. Reporters lament the lack of guidance in the QRH as to the potential seriousness of the problem.
| Attributes | |
| ACN | 896981 |
| Time | |
| Date | 201006 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZZZ.ARTCC |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | B757-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Component | |
| Aircraft Component | Hydraulic System Pump |
| Person 1 | |
| Function | Pilot Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Person 2 | |
| Function | Pilot Not Flying First Officer |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe |
Narrative:
Just prior to top of descent; received EICAS advisory: left engine hydraulic ovht. Ran QRH procedure: 757 engine hydraulic ovht (left or right). First officer and I discussed possible related problems and possible subsequent failures. We also reviewed our systems knowledge. We decided to continually monitor the hydraulic quantities; use longer runway; configure early; use longer final; and not overtax the left hydraulic system in order to be prepared for a possible escalation of our apparently slightly degraded hydraulic system problem. We accomplished what we briefed with no noticeable decrease in left hydraulic quantity and all systems operations normal. After parking at the gate with all checklists done; maintenance informed us that left engine hydraulic pump was in fact extremely hot and had been apparently leaking hydraulic fluid.first officer and I discussed our mutual increase in concern over a checklist that could and maybe should have given us more insight or direction. In the procedure; a note or caution of possible related concerns might be helpful such as those we accomplished and reviewed as mentioned previously.
Original NASA ASRS Text
Title: B757 flight crew experienced a L ENG HYD OVHT EICAS advisory message just prior to descent. Crew landed safely and was informed by maintenance that the pump is extremely hot and leaking fluid. Reporters lament the lack of guidance in the QRH as to the potential seriousness of the problem.
Narrative: Just prior to top of descent; received EICAS advisory: L ENG HYD OVHT. Ran QRH procedure: 757 ENG HYD OVHT (L or R). First Officer and I discussed possible related problems and possible subsequent failures. We also reviewed our systems knowledge. We decided to continually monitor the hydraulic quantities; use longer runway; configure early; use longer final; and not overtax the left hydraulic system in order to be prepared for a possible escalation of our apparently slightly degraded hydraulic system problem. We accomplished what we briefed with no noticeable decrease in left hydraulic quantity and all systems operations normal. After parking at the gate with all checklists done; maintenance informed us that left engine hydraulic pump was in fact extremely hot and had been apparently leaking hydraulic fluid.First Officer and I discussed our mutual increase in concern over a checklist that could and maybe should have given us more insight or direction. In the procedure; a note or caution of possible related concerns might be helpful such as those we accomplished and reviewed as mentioned previously.
Data retrieved from NASA's ASRS site as of April 2012 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.