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B757 flight crew experienced a high stage bleed light and EICAS during takeoff roll. QRH procedures are complied with and maintenance is contacted for guidance. Maintenance wants the crew to operate both packs from the right engine and continue. One hour later maintenance decides that only one pack can be operated from the right engine and the crew elects to divert.
| Attributes | |
| ACN | 976936 |
| Time | |
| Date | 201110 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.Tower |
| State Reference | US |
| Environment | |
| Flight Conditions | Marginal |
| Aircraft 1 | |
| Make Model Name | B757-200 |
| Operating Under FAR Part | Part 121 |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Engine Air |
| Person 1 | |
| Function | First Officer Pilot Flying |
| Experience | Flight Crew Last 90 Days 120 Flight Crew Total 13000 Flight Crew Type 3000 |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe |
Narrative:
On take-off roll we got a left high stage bleed light and EICAS. At a safe altitude we ran and completed the engine high stage checklist in the QRH. We climbed to FL340 and called maintenance and dispatch to confirm the procedure. The checklist was very confusing. Maintenance wanted us to run both packs from a single bleed but that is not what the checklist called for so we had him contact the duty manager for confirmation. An hour later he responded to us that we could not operate 2 packs off one bleed. After considering routing and problems we would have if we lost our other bleed over mountainous terrain we decided with dispatch that a diversion was best. We prepared for an overweight landing and declared an emergency as a precaution. We landed without incident and taxied to the gate.
Original NASA ASRS Text
Title: B757 flight crew experienced a high stage bleed light and EICAS during takeoff roll. QRH procedures are complied with and maintenance is contacted for guidance. Maintenance wants the crew to operate both packs from the right engine and continue. One hour later Maintenance decides that only one pack can be operated from the right engine and the crew elects to divert.
Narrative: On take-off roll we got a left high stage bleed light and EICAS. At a safe altitude we ran and completed the Engine High Stage checklist in the QRH. We climbed to FL340 and called Maintenance and Dispatch to confirm the procedure. The checklist was very confusing. Maintenance wanted us to run both PACKS from a single bleed but that is not what the checklist called for so we had him contact the Duty Manager for confirmation. An hour later he responded to us that we could not operate 2 PACKS off one bleed. After considering routing and problems we would have if we lost our other bleed over mountainous terrain we decided with Dispatch that a diversion was best. We prepared for an overweight landing and declared an emergency as a precaution. We landed without incident and taxied to the gate.
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.