Dash 8 Series Undifferentiated or Other Model
Flight Crew Air Transport Pilot (ATP)
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Rejected Takeoff; Flight Crew Returned To Gate; General Flight Cancelled / Delayed
Aircraft
The take off was rejected due to a takeoff configuration warning. The flap position indicator was indicating that the flaps were just a little bit outside the 5 degree range.
During takeoff; we recieved a Take Off (TO) warning horn. I rejected the TO around 40 kts. I glanced at all of the items that would cause the horn to alarm and all were in the correct position. The First Officer (FO) notified tower that we were rejecting the TO and would be taxiing off on to taxiway A. From there I spoke with the passengers and Flight Attendants (FA) about the situation and called dispatch who connected me to maintenance. While on the phone we recycled the flaps; moved the condition levers forward and back; and numerous other items. We did another runup and still received the warning horn. The flap indicator was indicating just beyond the 5* mark even though it was in the detent. We returned to the gate and deplaned the passenger while I made a writeup. Maintenance came on board and replaced the flap indicator and that fixed the problem.
DHC-8 Flight Crew reported rejecting a takeoff at low speed when the takeoff warning horn sounds. After close examination it is determined that with the flap handle in the flap 5 detent the flap indicator shows the flap position slightly beyond the 5 degree position. The flight returns to the gate for maintenance.