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A B757 EICAS alerted a fuel pump failure; an engine bleed trip and a pack trip on takeoff. The crew continued but later diverted because after the bleed and pack reset the system failed again and fluctations continued in the remainging pack.
| Attributes | |
| ACN | 922937 |
| Time | |
| Date | 201012 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.ARTCC |
| State Reference | US |
| Aircraft 1 | |
| Make Model Name | B757-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise Takeoff |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Fuel Booster Pump |
| Person 1 | |
| Function | Pilot Flying |
| Experience | Flight Crew Last 90 Days 300 Flight Crew Total 12500 |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Procedural Maintenance |
Narrative:
Departing three EICAS caution messages were displayed on takeoff roll while accelerating above 80 KIAS (high speed phase). Takeoff continued and climbed out normally. EICAS messages were for: fuel pump left center tank; left engine bleed valve; and left pack (the aircraft had a history of these problems). The fuel boost pump was selected off and crossfeed valve opened per checklist. Also during climb the bleed valve and pack had automatically reset. When this happened the duct pressure began fluctuating rapidly. The bleed valve was selected off and later turned on as per checklist. After a short time the pressure fluctuations returned so the bleed valve and pack were turned off per checklist. At cruise (with single bleed operation) we noticed there was still a very minor pressure fluctuation noted on the cabin rate and outflow valve position indicators. We also noted the maximum EPR indicator displays on EICAS were fluctuating. After a conference call with dispatch and maintenance we elected to divert to an enroute airport and change planes. Initially we estimated the landing weight to be 198;000 (maximum) and on final we realized that we would be above this weight. Dispatch had sent landing data for an overweight landing and with all the problems that we had we decided to continue the approach and land 2;100 pounds above maximum.
Original NASA ASRS Text
Title: A B757 EICAS alerted a fuel pump failure; an engine bleed trip and a pack trip on takeoff. The crew continued but later diverted because after the bleed and pack reset the system failed again and fluctations continued in the remainging pack.
Narrative: Departing Three EICAS Caution Messages were displayed on takeoff roll while accelerating above 80 KIAS (high speed phase). Takeoff continued and climbed out normally. EICAS messages were for: Fuel pump left center tank; left engine bleed valve; and left pack (the aircraft had a history of these problems). The fuel boost pump was selected off and crossfeed valve opened per checklist. Also during climb the bleed valve and pack had automatically reset. When this happened the duct pressure began fluctuating rapidly. The bleed valve was selected off and later turned on as per checklist. After a short time the pressure fluctuations returned so the bleed valve and pack were turned off per checklist. At cruise (with single bleed operation) we noticed there was still a very minor pressure fluctuation noted on the cabin rate and outflow valve position indicators. We also noted the maximum EPR indicator displays on EICAS were fluctuating. After a conference call with Dispatch and Maintenance we elected to divert to an enroute airport and change planes. Initially we estimated the landing weight to be 198;000 (maximum) and on final we realized that we would be above this weight. Dispatch had sent landing data for an overweight landing and with all the problems that we had we decided to continue the approach and land 2;100 LBS above maximum.
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.