B757-200
Flight Crew Air Transport Pilot (ATP)
Distraction; Other / Unknown
Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Rejected Takeoff
Human Factors; Weather
Due to weather; snow-covered taxiways; runway changes; and traffic distractions; we planned to delay configuring until just prior to taking the runway so as to not contaminate the control surfaces with ice. Our planned configuration was missed. We got a configuration warning and immediately executed an RTO at about 20 KIAS and exited the runway. We prevented this on a previous flight by placing a visible cue and reminder on the throttle quadrant. We should have used this technique this time.
B757 First Officer reports delaying flap extension during taxi for takeoff due to snow on the taxiways; then forgetting to extend them prior to initiating takeoff. A low speed rejection occurs after the takeoff warning sounds.