Narrative:

Dispatch had filed us on the sidxx 1 departure that is compatible with a runway 12 departure. When we briefed the departure; per the fom; the ACARS pre departure clearance page was up. I saw (what I expected to see) the sidxx 1 in the clearance line since it was the one on the release. (However; I later found out that the line I was looking at was the 'filed' not the 'cleared' departure.)since it was a single FMC aircraft; the first officer switched quickly to the legs page; and we briefed and discussed the departure. We had other issues going on (passenger loading; bags; lavatory; etc.); but none that overwhelmed the preflight process.we departed. At 4000'; we started a left turn to 300 degrees per the sidxx 1. Departure stated that we should be on a 120-degree heading and we complied. He then asked if we were on the sidxx 2 departure and we stated; 'no; we are flying the sidxx 1.' he said we should be on the sidxx 2 departure and then directed a turn to intercept the sidxx 2 departure; which we loaded in the FMC. There were no aircraft conflicts and we continued on to our destination.the ACARS pre departure clearance page is not the clearest form of communication. It shows; in a very cryptic format; the 'filed' as well as the 'cleared' route. If the filed is the same as the cleared; it is pretty simple. However; any changes in the filed versus the cleared; is sometimes very hard to decipher. In this case; I saw what I wanted to see and that was the sidxx 1. I didn't take time to (as I know I should have) review the entire page. The sidxx 2 was two lines above the one I read.the other issue is I don't know how dispatch comes up with the routing. Is departure control asked what they would like to see? If we were filed for the clearance we were given (or if we were cleared for what we were filed; which I prefer) this problem would not be as likely to occur. I have to be more vigilant and not look for what I expect; but what is actually intended.

Google
 

Original NASA ASRS Text

Title: The flight crew of a commercial fixed wing aircraft failed to note the amendment to their cleared departure SID and turned the wrong direction after takeoff.

Narrative: Dispatch had filed us on the SIDXX 1 Departure that is compatible with a Runway 12 departure. When we briefed the departure; per the FOM; the ACARS Pre Departure Clearance page was up. I saw (what I expected to see) the SIDXX 1 in the clearance line since it was the one on the release. (However; I later found out that the line I was looking at was the 'filed' not the 'cleared' departure.)Since it was a single FMC aircraft; the First Officer switched quickly to the LEGS page; and we briefed and discussed the departure. We had other issues going on (Passenger loading; bags; lavatory; etc.); but none that overwhelmed the preflight process.We departed. At 4000'; we started a left turn to 300 degrees per the SIDXX 1. Departure stated that we should be on a 120-degree heading and we complied. He then asked if we were on the SIDXX 2 Departure and we stated; 'No; we are flying the SIDXX 1.' He said we should be on the SIDXX 2 Departure and then directed a turn to intercept the SIDXX 2 Departure; which we loaded in the FMC. There were no aircraft conflicts and we continued on to our destination.The ACARS Pre Departure Clearance page is not the clearest form of communication. It shows; in a very cryptic format; the 'filed' as well as the 'cleared' route. If the filed is the same as the cleared; it is pretty simple. However; any changes in the filed versus the cleared; is sometimes very hard to decipher. In this case; I saw what I wanted to see and that was the SIDXX 1. I didn't take time to (as I know I should have) review the entire page. The SIDXX 2 was two lines above the one I read.The other issue is I don't know how Dispatch comes up with the routing. Is Departure Control asked what they would like to see? If we were filed for the clearance we were given (or if we were cleared for what we were filed; which I prefer) this problem would not be as likely to occur. I have to be more vigilant and not look for what I expect; but what is actually intended.

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.