Narrative:

During takeoff roll; the captain advanced the throttles and selected the takeoff button to get takeoff thrust. The power advanced; but at a very slow rate. The thrust would not advance to take-off thrust. The captain selected the thrust button again with no change in thrust. We aborted take-off at approximately 135 knots. The aircraft was safely stopped on the runway and returned to the gate without incident.

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Original NASA ASRS Text

Title: B777 crew describe a rejected takeoff at 135 knots when autothrust would not engage.

Narrative: During takeoff roll; the Captain advanced the throttles and selected the takeoff button to get takeoff thrust. The power advanced; but at a very slow rate. The thrust would not advance to take-off thrust. The Captain selected the thrust button again with no change in thrust. We aborted take-off at approximately 135 knots. The aircraft was safely stopped on the runway and returned to the gate without incident.

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.