Crj-200 flight crew reported rejecting the takeoff just before V1 when they realized they had not co...

Narrative:

Prior to pushback; there was no freezing precipitation. After we pushed and started engines; light snow began. We proceeded to deice; and then to depart with anti-icing equipment on. After setting takeoff thrust; the first officer (who was pilot flying) realized the takeoff data was not calculated for anti-icing equipment on. He called out the error and elected to abort the takeoff. He made the call just prior to V1; but due to reaction times; it was slightly above V1 when the thrust was reduced and brakes applied. The rejected takeoff was completed safely in accordance with SOP. We alerted the tower; exited the runway safely; stopped the aircraft; and debriefed the situation. We then proceeded back to the deice pad as snowfall had become moderate. After de-icing again; resetting takeoff data to reflect anti-ice usage; and waiting for brake temperature monitoring system indications to reduce within limitations; we departed with no further issues.

Original NASA ASRS Text

Title: CRJ-200 flight crew reported rejecting the takeoff just before V1 when they realized they had not computed takeoff data to reflect their 'anti-ice on' configuration.

Narrative: Prior to pushback; there was no freezing precipitation. After we pushed and started engines; light snow began. We proceeded to deice; and then to depart with anti-icing equipment on. After setting takeoff thrust; the First Officer (who was pilot flying) realized the takeoff data was not calculated for anti-icing equipment on. He called out the error and elected to abort the takeoff. He made the call just prior to V1; but due to reaction times; it was slightly above V1 when the thrust was reduced and brakes applied. The rejected takeoff was completed safely in accordance with SOP. We alerted the Tower; exited the runway safely; stopped the aircraft; and debriefed the situation. We then proceeded back to the deice pad as snowfall had become moderate. After de-icing again; resetting takeoff data to reflect anti-ice usage; and waiting for brake temperature monitoring system indications to reduce within limitations; we departed with 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.

Attributes
ACN	1533133
Time
Date	201804
Local Time Of Day	1801-2400
Place
Locale Reference	DTW.Airport
State Reference	MI
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Make Model Name	Regional Jet 200 ER/LR (CRJ200)
Operating Under FAR Part	Part 121
Flight Phase	Takeoff
Flight Plan	IFR
Person 1
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Person 2
Function	First Officer Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Deviation - Procedural Published Material / Policy

Crj-200 flight crew reported rejecting the takeoff just before V1 when they realized they had not computed takeoff data to reflect their 'anti-ice on' configuration.