Narrative:

Just before takeoff the heading and navigation buttons were armed. During takeoff; just after power was set and the aircraft began to roll; I noticed that the the green heading and pitch symbols on the primary flight display had a red line through them. I called for the abort and the sic notified tower. I executed a low speed abort using minimal breaking after determining that the sufficient breaking was available to slow. With an aircraft on the approach behind us we were told to exit on runway 1 with some expediency. We missed runway 1 then were told to exit [on taxiway] right which we accomplished. While holding short on taxiway Q we initiated a checklist. I noticed that there was an accompanying yellow att 2 flag on the primary flight display. The checklist indicated that the cross side attitude was displayed. Under action required it indicated that the autopilot would not be able to be engaged in this state. I then noticed that the ahrs 1/2 button was in the 2 position. I switched the tiny button back to 1 and the problem was solved. It is not known how the button came to be depressed though the aircraft did just get cleaned and have some maintenance done; though it could have just as easily been pilot error. This was caused by an insufficient pre-takeoff instrument scan. Fully incorporating the smaller buttons such as the ahrs 1/2 into the preflight instrument scan as well as the pre-takeoff instrument scan. Always setting the navigation mode to be used during the before taxi check so as to provide more time to confirm; verify; and incorporate the associated primary flight display annunciators into the scan. This is not always feasible as plans can change during the taxi.

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Original NASA ASRS Text

Title: BE400 flight crew reports rejecting a takeoff at low speed due to the Captain having red lines through heading and pitch readouts on his PFD. The AHRS 1/2 button was in the 2 position and switching back to the 1 position solved the problem.

Narrative: Just before takeoff the HDG and NAV buttons were armed. During takeoff; just after power was set and the aircraft began to roll; I noticed that the the green heading and pitch symbols on the Primary Flight Display had a red line through them. I called for the abort and the SIC notified Tower. I executed a low speed abort using minimal breaking after determining that the sufficient breaking was available to slow. With an aircraft on the approach behind us we were told to exit on Runway 1 with some expediency. We missed Runway 1 then were told to exit [on Taxiway] R which we accomplished. While holding short on Taxiway Q we initiated a checklist. I noticed that there was an accompanying yellow ATT 2 flag on the Primary Flight Display. The checklist indicated that the cross side attitude was displayed. Under action required it indicated that the autopilot would not be able to be engaged in this state. I then noticed that the AHRS 1/2 button was in the 2 position. I switched the tiny button back to 1 and the problem was solved. It is not known how the button came to be depressed though the aircraft did just get cleaned and have some maintenance done; though it could have just as easily been pilot error. This was caused by an insufficient pre-takeoff instrument scan. Fully incorporating the smaller buttons such as the AHRS 1/2 into the preflight instrument scan as well as the pre-takeoff instrument scan. Always setting the navigation mode to be used during the before taxi check so as to provide more time to confirm; verify; and incorporate the associated Primary Flight Display annunciators into the scan. This is not always feasible as plans can change during the taxi.

Data retrieved from NASA's ASRS site as of July 2013 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.