B757 Undifferentiated or Other Model
Flight Crew Last 90 Days 151; Flight Crew Total 7886; Flight Crew Type 651
Communication Breakdown; Human-Machine Interface
Deviation - Speed All Types; Deviation / Discrepancy - Procedural Published Material / Policy; Deviation / Discrepancy - Procedural Weight And Balance
Flight Crew Became Reoriented
Human Factors
During our preflight duties the final weights were printed off of the ACARS. The Captain tore it off of the printer and was reviewing it. Since I was already in the performance page I just asked him what the weight was. He gave me a number and I put it into the FMC. A short time later we got our takeoff data and we bugged the speeds. Once we began the takeoff roll and I had called rotate; I noted that the airplane did not seem to want to fly. The Captain simply allowed the airplane to fly itself off of the runway and we climbed out normally. A short time later it hit me what had happened. I looked at the final weight manifest and saw that instead of reading me the TOGW; I was instead given the ZFW. This number didn't raise a flag with me at the time since I primarily fly the 757-200. For a full 757-300; that number was entirely too low.
B757-300 First Officer reports being given the zero fuel weight by the Captain when requesting the takeoff weight for V speed calculation. The aircraft does not rotate or lift off at the predicted speeds; but does takeoff and climb normally once the required speed is obtained.