Narrative:

Aborted takeoff after we were unable to determine the proper N1 setting for takeoff. Abort was called at approximately 50 knots. Prior to takeoff; we taxied out single engine to the runway and performed a left engine start prior to reaching the runway. The right cowl engine anti-ice was selected on for the taxi with active snow conditions. During the left engine start; I left the right cowl anti-ice in the on position and subsequently received a bleed misconfigure caution. To remedy the situation; I turned the right engine cowl off. After completing the left engine start; we ran a before take-off check to the line. Upon entering the runway; the below the line portion of the checklist was completed. I selected the wing anti-ice to the on position; and realized the cowl anti-ice was off. I positioned the switches in the on position and we were cleared for takeoff. After we began the initial takeoff roll; we realized that the N1 takeoff performance carrot was not visible. Instinctively; I reset the OAT in the performance data which was blank after selecting the thrust limit page. The captain called for the abort during this sequence; and we exited the runway without incident.there are two possible causes for the missing performance data. Either we forgot to input the OAT prior to start; or the sequencing of the anti-ice equipment (wings before cowls taking the runway) confused the performance computer.being more vigilant to the performance data as the anti-icing equipment was selected on would have prevented this event from occurring.

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Original NASA ASRS Text

Title: CRJ-200 First Officer reported a rejected takeoff after N1 takeoff performance data was not displayed.

Narrative: Aborted takeoff after we were unable to determine the proper N1 setting for takeoff. Abort was called at approximately 50 knots. Prior to takeoff; we taxied out single engine to the runway and performed a left engine start prior to reaching the runway. The right cowl engine anti-ice was selected on for the taxi with active snow conditions. During the left engine start; I left the right cowl anti-ice in the on position and subsequently received a Bleed Misconfigure caution. To remedy the situation; I turned the right engine cowl off. After completing the left engine start; we ran a before take-off check to the line. Upon entering the runway; the below the line portion of the checklist was completed. I selected the wing anti-ice to the on position; and realized the cowl anti-ice was off. I positioned the switches in the on position and we were cleared for takeoff. After we began the initial takeoff roll; we realized that the N1 takeoff performance carrot was not visible. Instinctively; I reset the OAT in the performance data which was blank after selecting the thrust limit page. The Captain called for the abort during this sequence; and we exited the runway without incident.There are two possible causes for the missing performance data. Either we forgot to input the OAT prior to start; or the sequencing of the anti-ice equipment (wings before cowls taking the runway) confused the performance computer.Being more vigilant to the performance data as the anti-icing equipment was selected on would have prevented this event from occurring.

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.