Narrative:

Lax tower instructed us to line up and wait on runway 24L. After we complied; the captain transferred aircraft controls to myself. Once lax tower cleared us for takeoff; I advanced the thrust levers and commenced our takeoff roll. Shortly after; I noticed an aircraft downfield that appeared to be approaching our runway at a relatively fast rate. At that time; I asked the captain if that plane (potential crossing aircraft) is going to stop. Moments later; it was evident the other plane was going to cross our runway. I verbalized to the captain the call to stop our takeoff; to which he promptly responded and slowed the aircraft. Shortly after we had already initiated the rejected takeoff; lax tower instructed us to cancel our takeoff clearance. I announced to tower we had aborted our takeoff due to an aircraft on runway. We taxied clear of the runway to comply with necessary procedures.

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Original NASA ASRS Text

Title: A321 First Officer reported rejecting the takeoff at LAX due to crossing traffic downfield.

Narrative: LAX tower instructed us to line up and wait on runway 24L. After we complied; the Captain transferred aircraft controls to myself. Once LAX tower cleared us for takeoff; I advanced the thrust levers and commenced our takeoff roll. Shortly after; I noticed an aircraft downfield that appeared to be approaching our runway at a relatively fast rate. At that time; I asked the Captain if that plane (potential crossing aircraft) is going to stop. Moments later; it was evident the other plane was going to cross our runway. I verbalized to the Captain the call to stop our takeoff; to which he promptly responded and slowed the aircraft. Shortly after we had already initiated the rejected takeoff; LAX tower instructed us to cancel our takeoff clearance. I announced to tower we had aborted our takeoff due to an aircraft on runway. We taxied clear of the runway to comply with necessary procedures.

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.