Narrative:

After holding the brakes and advancing the power levers to 50% we continued our takeoff. The power was set in a timely manner. During the captain's scan; he found the autofeather did not arm; and called reject at approximately 80K. We executed the rejected takeoff without incident. I notified the tower we were rejecting; and noted the speed. We cleared the runway and contacted maintenance.if the power would be advanced above 50% before releasing the brakes; the rejected takeoff would be avoided.

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Original NASA ASRS Text

Title: A Dash 8 flight crew rejected the takeoff when the autofeather system failed to arm.

Narrative: After holding the brakes and advancing the power levers to 50% we continued our takeoff. The power was set in a timely manner. During the Captain's scan; he found the autofeather did not arm; and called reject at approximately 80K. We executed the rejected takeoff without incident. I notified the tower we were rejecting; and noted the speed. We cleared the runway and contacted maintenance.If the power would be advanced above 50% before releasing the brakes; the rejected takeoff would be avoided.

Data retrieved from NASA's ASRS site as of April 2012 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.