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B747-400 flight crew reported they rejected their takeoff when they had difficulty with directional control because the left body gear steering had failed.
| Attributes | |
| ACN | 1293202 |
| Time | |
| Date | 201509 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | JFK.Tower |
| State Reference | NY |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | B747-400 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Takeoff |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Main Gear |
| Person 1 | |
| Function | Captain Pilot Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Person 2 | |
| Function | Pilot Not Flying First Officer |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Inflight Event / Encounter Loss Of Aircraft Control |
Narrative:
Low gross weight/aft cg rejected takeoff runway 13R. During taxi the aircraft was somewhat difficult to turn but I attributed this to the aft cg. Holding short of 13R we were cleared for takeoff. Aligned the aircraft with the runway centerline; again with some difficulty. Started the takeoff roll; set 70% N1 then pushed to/GA. Almost immediately the aircraft veered hard to the left. I unsuccessfully tried to use rudder steering to align the aircraft. The first officer called 'brakes; brakes' I immediately applied full braking and idle thrust and disconnected the auto throttle. I never went into reverse thrust as we were at a very slow speed; approx. 10 knots. Although I was slow to initiate the reject the aircraft came to a stop on the runway but near the left edge and angled away from centerline. Since I was unsure of how close we were to the runway edge or location of any obstacles/signs; I had the first officer inform the tower that we would need a tug to remove us from the runway. I deemed this was a safer course of action.need to always be ready for a reject even at 5-10 knots.
Original NASA ASRS Text
Title: B747-400 flight crew reported they rejected their takeoff when they had difficulty with directional control because the left body gear steering had failed.
Narrative: Low gross weight/aft CG rejected takeoff runway 13R. During taxi the aircraft was somewhat difficult to turn but I attributed this to the aft CG. Holding short of 13R we were cleared for takeoff. Aligned the aircraft with the runway centerline; again with some difficulty. Started the takeoff roll; set 70% N1 then pushed TO/GA. Almost immediately the aircraft veered hard to the left. I unsuccessfully tried to use rudder steering to align the aircraft. The FO called 'brakes; brakes' I immediately applied full braking and idle thrust and disconnected the auto throttle. I never went into reverse thrust as we were at a very slow speed; approx. 10 knots. Although I was slow to initiate the reject the aircraft came to a stop on the runway but near the left edge and angled away from centerline. Since I was unsure of how close we were to the runway edge or location of any obstacles/signs; I had the First Officer inform the tower that we would need a tug to remove us from the runway. I deemed this was a safer course of action.Need to always be ready for a reject even at 5-10 knots.
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.