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B757 captain reports rejecting a takeoff when thrust does not increase evenly after auto thrust is selected resulting in loss of directional control.
| Attributes | |
| ACN | 1155546 |
| Time | |
| Date | 201403 |
| Local Time Of Day | 0001-0600 |
| Place | |
| Locale Reference | ZZZZ.Airport |
| State Reference | FO |
| Aircraft 1 | |
| Make Model Name | B757-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Other Rejected Takeoff |
| Component | |
| Aircraft Component | Turbine Engine |
| Person 1 | |
| Function | Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Deviation - Procedural Published Material / Policy Inflight Event / Encounter Loss Of Aircraft Control |
Narrative:
During the initial take-off roll; the engines spooled up asymmetrically resulting in significant deviation from centerline with full rudder deflection. The power was retarded to idle and we taxied clear of the runway. The speed at the time that we discontinued the take-off was less than 25 knots. After clearing the runway; we determined that what had happened was a result of not allowing the engines to spool up evenly to 1.10 EPR prior to selecting takeoff thrust. The subsequent take-off was normal. Failure to follow the flight manual procedure for take-off.
Original NASA ASRS Text
Title: B757 Captain reports rejecting a takeoff when thrust does not increase evenly after auto thrust is selected resulting in loss of directional control.
Narrative: During the initial take-off roll; the engines spooled up asymmetrically resulting in significant deviation from centerline with full rudder deflection. The power was retarded to idle and we taxied clear of the runway. The speed at the time that we discontinued the take-off was less than 25 knots. After clearing the runway; we determined that what had happened was a result of not allowing the engines to spool up evenly to 1.10 EPR prior to selecting takeoff thrust. The subsequent take-off was normal. Failure to follow the Flight Manual procedure for take-off.
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.