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The flight crew of a B737-800 reported that pushing both throttles up for takeoff the engines did not come up evenly. Subsequent takeoff engine parameters were normal.
| Attributes | |
| ACN | 1385653 |
| Time | |
| Date | 201609 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | B737-800 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Takeoff |
| Flight Plan | IFR |
| Person 1 | |
| Function | Pilot Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Person 2 | |
| Function | Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe |
Narrative:
We did a rolling takeoff; coming around the corner I pushed the power up to 40 percent. I last saw it going through 35 percent and climbing I was looking down the runway and confident we were stable and normal. I next pressed the toga button for takeoff power which came up normally until about full power when I notice a yaw; I attempted to realign the power; but it was not immediate so I aborted the takeoff.we got back in line and did a normal takeoff. While I was confident the power had evenly come up to 40 percent; I cannot remember if I actually saw that it was at 40 percent when I hit the toga button. While I am not sure if that was the cause or just an anomaly; I will make sure to verify and register 40 percent before the toga is pushed.
Original NASA ASRS Text
Title: The flight crew of a B737-800 reported that pushing both throttles up for takeoff the engines did not come up evenly. Subsequent takeoff engine parameters were normal.
Narrative: We did a rolling takeoff; coming around the corner I pushed the power up to 40 percent. I last saw it going through 35 percent and climbing I was looking down the runway and confident we were stable and normal. I next pressed the toga button for takeoff power which came up normally until about full power when I notice a yaw; I attempted to realign the power; but it was not immediate so I aborted the takeoff.We got back in line and did a normal takeoff. While I was confident the power had evenly come up to 40 percent; I cannot remember if I actually saw that it was at 40 percent when I hit the toga button. While I am not sure if that was the cause or just an anomaly; I will make sure to verify and register 40 percent before the toga is pushed.
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.