Narrative:

On the takeoff roll at 70 KIAS the takeoff warning horn sounded with an EICAS flaps primary advisory. We aborted the takeoff; but rejected takeoff did not engage. The tower was notified of the abort. A PA was made to remain seated. We taxied back to the gate and the flight was later canceled.

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Original NASA ASRS Text

Title: A B747-400 flight crew aborted their takeoff below 80 KIAS when they received a takeoff configuration warning accompanied by a 'Flaps Primary' EICAS message.

Narrative: On the takeoff roll at 70 KIAS the takeoff warning horn sounded with an EICAS FLAPS Primary advisory. We aborted the takeoff; but RTO did not engage. The Tower was notified of the abort. A PA was made to remain seated. We taxied back to the gate and the flight was later canceled.

Data retrieved from NASA's ASRS site as of July 2013 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.