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Learjet 75 captain reported configuration warning during takeoff roll due to a rudder trim indication anomaly.
| Attributes | |
| ACN | 1582236 |
| Time | |
| Date | 201810 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Aircraft 1 | |
| Make Model Name | Learjet 75 |
| Flight Phase | Takeoff |
| Component | |
| Aircraft Component | Rudder Trim System |
| Person 1 | |
| Function | Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe |
Narrative:
After being cleared for takeoff the aircraft moved about 1;000 feet down the runway and we received a 'configuration' warning and had to abort the takeoff. We then taxied back to the FBO without further incident. Detected via master warning. The lear 75 has an ongoing bulletin regarding an indication of un-commanded rudder trim movement. Until now I have not seen the trim move enough to exceed takeoff limits. On the takeoff roll the rudder indication went from '0' to 'L2' which is out of configuration for takeoff. This caused a 'configuration' warning due to 'take off trim.' system should be investigated for solution. This could be very dangerous on a contaminated runway.
Original NASA ASRS Text
Title: Learjet 75 Captain reported configuration warning during takeoff roll due to a rudder trim indication anomaly.
Narrative: After being cleared for takeoff the aircraft moved about 1;000 feet down the runway and we received a 'Configuration' warning and had to abort the takeoff. We then taxied back to the FBO without further incident. Detected via Master Warning. The Lear 75 has an ongoing bulletin regarding an indication of un-commanded rudder trim movement. Until now I have not seen the trim move enough to exceed takeoff limits. On the takeoff roll the rudder indication went from '0' to 'L2' which is out of configuration for takeoff. This caused a 'Configuration' warning due to 'Take Off Trim.' System should be investigated for solution. This could be very dangerous on a contaminated runway.
Data retrieved from NASA's ASRS site 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.