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On initial climbout; B757 flight crew observed EICAS messages for left pack off & left engine bleed off. The switches are turned off per the QRH and shortly after the right pack & right bleed began cycling on & off and also the right center fuel tank pump. The crew elects to return to the departure airport.
| Attributes | |
| ACN | 1216904 |
| Time | |
| Date | 201411 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZZZ.TRACON |
| State Reference | US |
| Aircraft 1 | |
| Make Model Name | B757-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Climb |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Pneumatic Valve/Bleed Valve |
| Person 1 | |
| Function | Captain Pilot Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Person 2 | |
| Function | Pilot Not Flying First Officer |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
On initial climbout; observed EICAS messages 'left pack off' & 'left engine bleed off' with corresponding off lights in respective switches. Turned switches off per QRH. Shortly thereafter the right pack & right bleed began cycling on & off; with the right center fuel tank pump cycling on & off. Notified ATC of our intention to return and declared emergency due to intention of making an overweight landing. Notified flight attendants; pax; station & dispatch. Landing accomplished normally with 200 fpm descent at touchdown at 216.0 gw. Utilized long rollout; no auto-brakes; minimal braking below 60 kts. Terminated emergency with ATC upon clearing runway for normal taxi to gate. No further issues.
Original NASA ASRS Text
Title: On initial climbout; B757 flight crew observed EICAS messages for L PACK OFF & L ENG BLEED OFF. The switches are turned off per the QRH and shortly after the R PACK & R BLEED began cycling on & off and also the R CTR FUEL TANK PUMP. The crew elects to return to the departure airport.
Narrative: On initial climbout; observed EICAS messages 'L PACK OFF' & 'L ENG BLEED OFF' with corresponding OFF lights in respective switches. Turned switches OFF per QRH. Shortly thereafter the R PACK & R BLEED began cycling on & off; with the R CTR FUEL TANK PUMP cycling on & off. Notified ATC of our intention to return and declared Emergency due to intention of making an overweight landing. Notified flight attendants; pax; station & dispatch. Landing accomplished normally with 200 fpm descent at touchdown at 216.0 GW. Utilized long rollout; no auto-brakes; minimal braking below 60 kts. Terminated emergency with ATC upon clearing runway for normal taxi to gate. No further issues.
Data retrieved from NASA's ASRS site 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.