B757 Undifferentiated or Other Model
Flight Crew Multiengine; Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP)
Flight Crew Total 1600; Flight Crew Type 1053
Human-Machine Interface
Aircraft Equipment Problem Less Severe
Flight Crew Landed As Precaution; Flight Crew Returned To Departure Airport
Aircraft
At v1 our EICAS went blank. Messages began to appear on lower crt including: Right electric hyd pump; auto throttle disc; L Center Fuel pump inop; fuel config. Additionally we lost EPR indications on left engine. It seemed to both of us to be an electrical problem possibly a bus off or gen off so we started apu. Ran electric hyd pump QRH. Ran EICAS loss QRH. Neither of these helped out. We were unable to determine the root of our problem so we elected to air return to [our departure airport]. After landing the stress of the event was still present and we decided not to continue with the pairing.
At V1 the upper EICAS blanked. I continued takeoff and at rotation the autothrottle disconnected. We also had a left EPR failure. I turned the APU on. I continued a normal hand flown departure up to 27;000. I put the auto pilot on after we did the after takeoff checklist. Then we had a right electric hydraulic pump failure and a L center fuel pump failure. The FO (First Officer) ran the Right Hydraulic Pump failure checklist. Once he completed that we got a Fuel Imbalance EICAS. It appeared that we were having some electrical issue; possibly a BUS issue but we had no cockpit indications of an electrical system failure as the overhead panel looked normal. Starting the APU did not fix any of the messages. We decided the best course of action was to curtail running several checklists for each failure as we did not know what the underlying issue was. We coordinated with dispatch and ATC for a normal return and landing in [our departure airport]. We were below landing weight. The flight attendants and pax were advised of the situation. We landed and taxied to the gate with no further incident.
B757 flight crew reported several EICAS failure messages appeared after takeoff that necessitated a return to the departure airport.