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A319 flight crew reported the aircraft swerved toward the runway edge when the engines spooled up at different rates; at least in part because the throttles were advanced without a stabilizing pause at 50% N1 as called for by SOP.
| Attributes | |
| ACN | 1335814 |
| Time | |
| Date | 201602 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Aircraft 1 | |
| Make Model Name | A319 |
| Flight Phase | Takeoff |
| Flight Plan | IFR |
| 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 Deviation - Procedural Published Material / Policy Ground Event / Encounter Loss Of Aircraft Control Inflight Event / Encounter Loss Of Aircraft Control |
Narrative:
On takeoff; I set the power initially to 50% N1; then to flex. The right engine hung up near idle and did not accelerate to flex power; but the left engine did go to flex. This pushed the light A319 to the right fairly violently. First officer (first officer) and I pulled the throttles to idle and braked as I attempted to regain directional control and remain on the runway. I over corrected with the steering; but managed to remain on the runway and get the aircraft stopped. We aborted the takeoff at approximately 20 knots and were able to exit the runway in just over 1;000 feet. We evaluated the aircraft for a few minutes; conducted checklists; and made a PA explaining our situation. We then elected to continue with the flight. The second takeoff was normal and the flight [was] uneventful.closely monitor the engine N1 to ensure the power is stable before moving the throttles to flex. Many thanks to the first officer for his help in getting the aircraft stopped safely and on the runway.
Original NASA ASRS Text
Title: A319 flight crew reported the aircraft swerved toward the runway edge when the engines spooled up at different rates; at least in part because the throttles were advanced without a stabilizing pause at 50% N1 as called for by SOP.
Narrative: On takeoff; I set the power initially to 50% N1; then to FLEX. The right engine hung up near idle and did not accelerate to FLEX power; but the left engine did go to FLEX. This pushed the light A319 to the right fairly violently. First Officer (FO) and I pulled the throttles to idle and braked as I attempted to regain directional control and remain on the runway. I over corrected with the steering; but managed to remain on the runway and get the aircraft stopped. We aborted the takeoff at approximately 20 knots and were able to exit the runway in just over 1;000 feet. We evaluated the aircraft for a few minutes; conducted checklists; and made a PA explaining our situation. We then elected to continue with the flight. The second takeoff was normal and the flight [was] uneventful.Closely monitor the engine N1 to ensure the power is stable before moving the throttles to FLEX. Many thanks to the FO for his help in getting the aircraft stopped safely and on the 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.