Narrative:

We departed runway 18L. Another airbus departed 18R at the same time. Weather was clear. We could see that the departure we were on would take us toward the other airplane. Departure gave us a vector away from the other airplane.we later discovered we flew the wrong departure. We both missed the revised segment on the pre departure clearance. Multiple distractions when reviewing pre departure clearance - flight attendants; gate agent; out of printer paper; etc. I saw on the pre departure clearance what I wanted/expected to see - the route we had discussed.if a clearance is revised; the original clearance should not be on the pre departure clearance at all. It is too easy to see what you expect to see during the often; quite busy minutes just before pushback.

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Original NASA ASRS Text

Title: A departing A321 flight crew experienced a traffic conflict with a departure off the parallel runway when they failed to note and program the revised departure procedure on their PDC delivered clearance.

Narrative: We departed Runway 18L. Another Airbus departed 18R at the same time. Weather was clear. We could see that the departure we were on would take us toward the other airplane. Departure gave us a vector away from the other airplane.We later discovered we flew the wrong departure. We both missed the revised segment on the PDC. Multiple distractions when reviewing PDC - Flight Attendants; Gate Agent; out of printer paper; etc. I saw on the PDC what I wanted/expected to see - the route we had discussed.If a clearance is revised; the original clearance should not be on the PDC at all. It is too easy to see what you expect to see during the often; quite busy minutes just before pushback.

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.