Narrative:

During takeoff; the airplane started yawing around 70 KTS; first to the left; then to the right. Firm rudder input was needed to correct. Some seconds after the '70 KTS cross checked' call; the pilot not flying called for the abort. We aborted using full brakes; speed brakes; and reversers. [We] got the airplane stopped and taxied off the runway. About 200 yards down the taxiway; both main tires went flat due to the fusible plugs melting after hard braking during the abort. The pilot not flying told me later that the airspeed tape had hesitated around 70 KTS then jumped right up to 95 KTS and stayed there. We noticed during the next couple of hours on the airport that periodically the light and variable winds would be interrupted by intense gusts moving through at about 25 KTS; almost like dust devils or small micro bursts that form in the heat. We think that one of those might have moved across our path during the takeoff roll and caused the yawing and erroneous airspeed readings.

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Original NASA ASRS Text

Title: CE560 flight crew reports rejecting a takeoff after encountering airspeed fluctuations and difficulty maintaining directional control. A dustless 'dust devil' was believed to be the cause of the anomaly.

Narrative: During takeoff; the airplane started yawing around 70 KTS; first to the left; then to the right. Firm rudder input was needed to correct. Some seconds after the '70 KTS cross checked' call; the pilot not flying called for the abort. We aborted using full brakes; speed brakes; and reversers. [We] got the airplane stopped and taxied off the runway. About 200 yards down the taxiway; both main tires went flat due to the fusible plugs melting after hard braking during the abort. The pilot not flying told me later that the airspeed tape had hesitated around 70 KTS then jumped right up to 95 KTS and stayed there. We noticed during the next couple of hours on the airport that periodically the light and variable winds would be interrupted by intense gusts moving through at about 25 KTS; almost like dust devils or small micro bursts that form in the heat. We think that one of those might have moved across our path during the takeoff roll and caused the yawing and erroneous airspeed readings.

Data retrieved from NASA's ASRS site as of April 2012 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.