A dash 8 flight crew rejected the takeoff when the autofeather system failed to arm.

Attributes
ACN	897109
Time
Date	201007
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Dash 8-300
Operating Under FAR Part	Part 121
Flight Phase	Takeoff
Flight Plan	IFR
Component
Aircraft Component	Propeller Autofeather System
Person 1
Function	Pilot Flying First Officer
Qualification	Flight Crew Commercial
Events
Anomaly	Aircraft Equipment Problem Less Severe

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.

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.