Narrative:

Cleared to taxi out to runway 27. West operations in effect with runway 30 used for landing and runway 27 for landing and takeoff. Ground cleared us to follow a aircraft Y to runway 27. They were cleared into position and for takeoff. Captain and I both struck our clocks to time for wake turbulence. We were then cleared to line up and wait on runway 27; and told traffic was on 6 mile final for runway 30; and 16 mile final for runway 27. We had a quick discussion about the traffic on final and agreed that spacing should be ok. We received a clearance for takeoff on runway 27; I noted that the departing aircraft Y was at about 4 miles; and one minute forty seconds had passed. While the clearance for wake turbulence was fairly close; I felt comfortable with the spacing. I set spool up power; then started advancing to flex. At the same time; the tower monitor came on in a different voice and told us to either immediately roll or abort our takeoff. I had just reached flex power when the captain aborted; took aircraft control and said my aircraft. Plane moved maybe 20 feet. The tower controller then told us to stay in position as a aircraft Z landed very shortly thereafter. Tower then cleared us for takeoff without delay as another large aircraft was on a 2 mile final behind us. Took off normally and proceeded to destination.training going on in the tower; different ATC voices. Rush to move traffic; both departing and arriving; mostly heavies. Rushed from a reassignment on our part.in position on runway 27 with landing on runway 30 is a completely blind position for pilots. We are completely reliant on the tower as we can't properly clear traffic on final. There was no rush to move traffic on the tower's part; maybe 3-4 airplanes waiting for takeoff. Proper thing to do would have been to just leave us holding short.

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Original NASA ASRS Text

Title: A321 flight crew reported conflicting clearances from Tower resulted in rejected takeoff.

Narrative: Cleared to Taxi out to Runway 27. West operations in effect with Runway 30 used for landing and Runway 27 for landing and takeoff. Ground cleared us to follow a Aircraft Y to Runway 27. They were cleared into position and for takeoff. Captain and I both struck our clocks to time for wake turbulence. We were then cleared to line up and wait on Runway 27; and told traffic was on 6 mile final for Runway 30; and 16 mile final for Runway 27. We had a quick discussion about the traffic on final and agreed that spacing should be ok. We received a clearance for takeoff on Runway 27; I noted that the departing Aircraft Y was at about 4 miles; and one minute forty seconds had passed. While the clearance for wake turbulence was fairly close; I felt comfortable with the spacing. I set spool up power; then started advancing to flex. At the same time; the Tower Monitor came on in a different voice and told us to either immediately roll or abort our takeoff. I had just reached flex power when the Captain aborted; took aircraft control and said my aircraft. Plane moved maybe 20 feet. The Tower Controller then told us to stay in position as a Aircraft Z landed very shortly thereafter. Tower then cleared us for takeoff without delay as another large aircraft was on a 2 mile final behind us. Took off normally and proceeded to destination.Training going on in the Tower; different ATC voices. Rush to move traffic; both departing and arriving; mostly heavies. Rushed from a reassignment on our part.In position on Runway 27 with landing on Runway 30 is a completely blind position for pilots. We are completely reliant on the Tower as we can't properly clear traffic on final. There was no rush to move traffic on the Tower's part; maybe 3-4 airplanes waiting for takeoff. Proper thing to do would have been to just leave us holding short.

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.