Narrative:

Pushback; start; and taxi to runway were uneventful. We were given a right turn to 090 after departure and cleared for takeoff. After setting takeoff thrust and prior to the '80-knot' call; I heard an aircraft on approach to 5L reporting windshear on final and subsequently executing a go-around. Tower advised the go-around aircraft to continue runway heading since we were taking off on the parallel runway. However; the go-around aircraft reported he was unable runway heading and needed a right turn. This turn towards our takeoff path created a conflict and tower immediately cancelled our takeoff clearance. I called; 'reject; reject; reject' around 95 knots. The captain assumed control of the aircraft and stopped the aircraft. We taxied cleared and proceeded to a clear area adjacent to taxiway to complete all checklists and check brake energy in the performance computer. The performance computer called for an eight-minute wait prior to initiating another takeoff. Once cleared; we coordinated with dispatch to ensure we had sufficient fuel to complete our flight and a return to the gate was not necessary. Once the weather (ts) moved from the field; the flight to [destination] was uneventful.

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Original NASA ASRS Text

Title: B737 flight crew reported rejecting their takeoff when ATC cancelled their takeoff clearance because of a potential airborne conflict.

Narrative: Pushback; start; and taxi to Runway were uneventful. We were given a right turn to 090 after departure and cleared for takeoff. After setting takeoff thrust and prior to the '80-knot' call; I heard an aircraft on approach to 5L reporting windshear on final and subsequently executing a go-around. Tower advised the go-around aircraft to continue runway heading since we were taking off on the parallel runway. However; the go-around aircraft reported he was unable runway heading and needed a right turn. This turn towards our takeoff path created a conflict and Tower immediately cancelled our takeoff clearance. I called; 'reject; reject; reject' around 95 knots. The Captain assumed control of the aircraft and stopped the aircraft. We taxied cleared and proceeded to a clear area adjacent to Taxiway to complete all checklists and check brake energy in the performance computer. The performance computer called for an eight-minute wait prior to initiating another takeoff. Once cleared; we coordinated with Dispatch to ensure we had sufficient fuel to complete our flight and a return to the gate was not necessary. Once the weather (TS) moved from the field; the flight to [destination] was uneventful.

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.