A CL65 flight crew rejected their takeoff from LGA when they realized they had briefed a tweny degree flap setting but had extended only eight degrees.
Synopsis
A CL65 flight crew rejected their takeoff from LGA when they realized they had briefed a tweny degree flap setting but had extended only eight degrees.
Narrative
During our pre-takeoff briefing; the Captain; who was to be the flying pilot briefed that we would conduct a Flaps 20 takeoff. Upon nearing our turn for takeoff; the Captain called for the 'Flaps 8 before takeoff checklist'. I executed and we confirmed the 'Flaps 8 before takeoff checklist' using the challenge and response method. Our EICAS displayed a 'Takeoff Config OK' message which we confirmed upon being cleared for takeoff in the 'Takeoff Checklist'. During the beginning of our takeoff roll I noticed that although the EICAS displayed a 'Takeoff Config OK' message; our ACARS was flashing a 'Set Flaps' message. Due to this conflict I called for an immediate abort. The Captain safely stopped the aircraft. I notified the Tower that we had aborted; there was no emergency; did not need assistance; and that we would be exiting the runway with the intent to be re-sequenced for takeoff. There were no injuries to the passengers; no damage to the aircraft; nor was there any damage to other property. We were re-sequenced and departed without issue after notifying our Dispatcher and receiving a re-validation of our release.
Second reporter narrative
I mistakenly called for Flaps 8 when it should have been set for Flaps 20. The Tower also instructed us to find a blimp off the departure end of the runway and verify that we could maintain visual contact. We acquired the blimp as the Tower cleared us into position and hold; (now line-up-and-wait).A few of the problems I see were my over confidence perhaps on a new First Officer who was; up until that point; doing very well. I failed to double check the flap setting based on what was planned and amid the distractions of the takeoff; (a reroute and the blimp) called for the wrong setting. I believe fatigue played a factor as it was day three of the trip and although we had plenty of rest per the schedule; we had arrived fairly late the night before; following two days of heavy flying with over seven and over eight hours of block time respectively.
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Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.