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|
Attributes | |
ACN | 1650005 |
Time | |
Date | 201905 |
Local Time Of Day | 0601-1200 |
Place | |
Locale Reference | ONT.Airport |
State Reference | CA |
Environment | |
Flight Conditions | VMC |
Light | Daylight |
Aircraft 1 | |
Make Model Name | MD-11 |
Operating Under FAR Part | Part 121 |
Flight Phase | Takeoff |
Flight Plan | IFR |
Component | |
Aircraft Component | Nosewheel Steering |
Person 1 | |
Function | Captain Pilot Not Flying |
Qualification | Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine |
Person 2 | |
Function | First Officer Pilot Flying |
Qualification | Flight Crew Instrument Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP) |
Events | |
Anomaly | Aircraft Equipment Problem Less Severe Ground Event / Encounter Loss Of Aircraft Control |
Narrative:
In position on runway 26L; we were on centerline; with calm winds. Once cleared for takeoff; I transferred aircraft control to the first officer (pilot flying). He called 'set standard power' and as I did so; I noticed he was veering to the left of centerline. Before I could set the power; he said; 'steer right; steer right; steer right!' I could feel the right rudder pedal was fully deflected. Simultaneously; I also applied full right rudder and reduced the power to idle. The aircraft still was not turning right; so I ultimately had to apply right brake to regain the centerline. We notified the tower of our reject and they instructed us to taxi down the runway and turn left on [the taxiway]. As we proceeded down the runway; I checked the steering with both the tiller and the rudders. The first officer (first officer) also checked the steering with his rudders. The aircraft responded normally at this point; however; we returned to the gate for further troubleshooting. We are not aware of what caused this un-commanded left turn on the takeoff roll. Maintenance is currently working on the problem. On both taxi-out and taxi-in; the aircraft turned without issue or resistance. The following comments would not prevent this event; but we did discuss the reject procedure. It does seem that it would be advantageous in certain circumstances for the first officer to call the reject. In this instance; I did not know that he was holding full right rudder and still turning left. We both thought this procedure should be re-evaluated.
Original NASA ASRS Text
Title: MD-11 flight crew reported the aircraft started an uncommented turn to the left on takeoff roll which resulted in a rejected takeoff.
Narrative: In position on Runway 26L; we were on centerline; with calm winds. Once cleared for takeoff; I transferred aircraft control to the First Officer (Pilot Flying). He called 'Set Standard Power' and as I did so; I noticed he was veering to the left of centerline. Before I could set the power; he said; 'Steer right; steer right; steer right!' I could feel the right rudder pedal was fully deflected. Simultaneously; I also applied full right rudder and reduced the power to idle. The aircraft still was not turning right; so I ultimately had to apply right brake to regain the centerline. We notified the Tower of our reject and they instructed us to taxi down the runway and turn left on [the taxiway]. As we proceeded down the runway; I checked the steering with both the tiller and the rudders. The FO (First Officer) also checked the steering with his rudders. The aircraft responded normally at this point; however; we returned to the gate for further troubleshooting. We are not aware of what caused this un-commanded left turn on the takeoff roll. Maintenance is currently working on the problem. On both taxi-out and taxi-in; the aircraft turned without issue or resistance. The following comments would not prevent this event; but we did discuss the reject procedure. It does seem that it would be advantageous in certain circumstances for the FO to call the reject. In this instance; I did not know that he was holding full right rudder and still turning left. We both thought this procedure should be re-evaluated.
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.