Narrative:

The event began while sitting. During the final boarding process (completing weight and balance form); the APU failed twice requiring a gpu to be attached. Current conditions were 31 degrees celsius as reported by the ATIS. The flight deck was approximately 5-10 degrees warmer with little to no air flow. The push back was performed. Once the engines were started; I performed the after start flow. The captain called for the checklist and we responded as appropriate. We then requested taxi and were given the short taxi to runway. All checklists preformed were normal. We were immediately cleared for take off as we were crossing from the ramp into the taxiway. Torque was 90% with no specials for the runway. On the take off roll; the captain advanced the throttles with out holding the brakes until 50% power to verify auto feather armed. I noticed the auto feather not arming and called 'reject; reject; reject' to tower. The speed was 90 kts. We notified them that no assistance was required and that we would like to taxi to the hard stand to contact maintenance/dispatch. Both the captain and I believe that due to the circumstances that occurred during the boarding process such as the multiple failures of the APU; the hot flight deck; and the quick taxi to the runway; that we did not truly give the focus that the checklist required in actually verifying some of the data. Both he and I believe that this was a chain reaction of little things that ended up building. Both the captain and I agreed that during my after start flow; when I had pressed the auto feather select button; the button did not fully engage.

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Original NASA ASRS Text

Title: Dash8 flight crew reports rejected takeoff after First Officer notices auto feather is not armed during the takeoff roll.

Narrative: The event began while sitting. During the final boarding process (completing weight and balance form); the APU failed twice requiring a GPU to be attached. Current conditions were 31 degrees Celsius as reported by the ATIS. The flight deck was approximately 5-10 degrees warmer with little to no air flow. The push back was performed. Once the engines were started; I performed the after start flow. The captain called for the checklist and we responded as appropriate. We then requested taxi and were given the short taxi to Runway. All checklists preformed were normal. We were immediately cleared for take off as we were crossing from the ramp into the taxiway. Torque was 90% with no specials for the runway. On the take off roll; the Captain advanced the throttles with out holding the brakes until 50% power to verify auto feather armed. I noticed the auto feather not arming and called 'reject; reject; reject' to Tower. The speed was 90 kts. We notified them that no assistance was required and that we would like to taxi to the hard stand to contact Maintenance/Dispatch. Both the Captain and I believe that due to the circumstances that occurred during the boarding process such as the multiple failures of the APU; the hot flight deck; and the quick taxi to the runway; that we did not truly give the focus that the checklist required in actually verifying some of the data. Both he and I believe that this was a chain reaction of little things that ended up building. Both the Captain and I agreed that during my after start flow; when I had pressed the auto feather select button; the button did not fully engage.

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.