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An SF340 crew rejected a takeoff because of a configuration warning annunciation. Condition lever switches were found to be faulty.
| Attributes | |
| ACN | 863016 |
| Time | |
| Date | 200912 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Dusk |
| Aircraft 1 | |
| Make Model Name | SF 340B |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Takeoff |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Throttle/Power Level |
| Person 1 | |
| Function | First Officer Pilot Not Flying |
| Qualification | Flight Crew Commercial |
| Experience | Flight Crew Last 90 Days 26 Flight Crew Total 1800 Flight Crew Type 1400 |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
While on the take off roll we got a configuration warning and associated master warning light/horn at approximately 100 knots. I believe we were about 10 knots before V1; maybe a little more as the aircraft was fairly full. Captain commanded an abort and we slowed easily on the remaining runway without the need for any abnormal braking. The trim; flaps; and condition levers were verified to be set in their proper locations. Upon shutdown of the right engine we then observed no bus tie; gen; or any other lights as the right generator was switched off. There were also no associated bleed lights; AC generator lights; or electrical bus lights. We were unsure of what would cause such a condition and upon shutting down the left engine we experienced the same lack of indication. This generated a second write-up. I suspect that one of the condition levers was not making full contact with it's micro switch causing the config warning and rejected take off. Interestingly it did not occur at the moment the power levers were advanced past the 64 degree switch; which I attribute to vibration from rolling down the runway. I have no idea what caused the electrical anomaly; but maintenance replaced some relays and cleared the discrepancy.
Original NASA ASRS Text
Title: An SF340 crew rejected a takeoff because of a configuration warning annunciation. Condition Lever switches were found to be faulty.
Narrative: While on the take off roll we got a Configuration warning and associated master warning light/horn at approximately 100 knots. I believe we were about 10 knots before V1; maybe a little more as the aircraft was fairly full. Captain commanded an abort and we slowed easily on the remaining runway without the need for any abnormal braking. The trim; flaps; and condition levers were verified to be set in their proper locations. Upon shutdown of the right engine we then observed no Bus Tie; Gen; or any other lights as the right generator was switched off. There were also no associated bleed lights; AC generator lights; or electrical bus lights. We were unsure of what would cause such a condition and upon shutting down the left engine we experienced the same lack of indication. This generated a second write-up. I suspect that one of the Condition Levers was not making full contact with it's micro switch causing the config warning and rejected take off. Interestingly it did not occur at the moment the power levers were advanced past the 64 degree switch; which I attribute to vibration from rolling down the runway. I have no idea what caused the electrical anomaly; but maintenance replaced some relays and cleared the discrepancy.
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.