Narrative:

First officer was pilot flying and ca pm. Took off xxr at ZZZ on the zzzzz X SID. After passing ZZZZZ1; center inquired which fix we were navigating to next. Pm replied with the next fix on the SID. The controller sounded confused and verified our routing. Both pilots at this point reviewed the clearance versus the filed route and saw the FMS was set up for the zzzzz departure instead of the amended ZZZZZ2 departure. The cleared departure has the same 3 initial fixes before heading slightly more southerly to a different transition than the filed departure. The pm queried ATC if a change in course was needed or if additional information would be needed later and ATC said no. ATC then cleared us to a VOR which was on both the filed and cleared flight plan and the flight continued to the destination. Ca loaded the FMS while first officer was preflighting the aircraft. First officer was pilot flying and therefore conducted the pre-start briefing. Neither pilot noticed the amendment on the pre departure clearance or corrected the FMS when the briefing was conducted. It was the first leg of a new crew change so that could have contributed to a lack of attention to detail or distraction. Complacency played a part as pre departure clearance are not amended frequently from filed routing. First officer hadn't flown in a month and didn't notice how an amended clearance on a pre departure clearance looks and briefed what was loaded in the FMS. Whoever loads the FMS should double check the clearance and verify the cleared route and have the other pilot verify the fixes more closely against the clearance as some have the same initial fixes.

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Original NASA ASRS Text

Title: Air carrier flight crew reported a track heading deviation. ATC questioned their routing and the crew realized they had an amended clearance.

Narrative: FO was pilot flying and CA PM. Took off XXR at ZZZ on the ZZZZZ X SID. After passing ZZZZZ1; Center inquired which fix we were navigating to next. PM replied with the next fix on the SID. The Controller sounded confused and verified our routing. Both pilots at this point reviewed the clearance versus the filed route and saw the FMS was set up for the ZZZZZ departure instead of the amended ZZZZZ2 departure. The cleared departure has the same 3 initial fixes before heading slightly more southerly to a different transition than the filed departure. The PM queried ATC if a change in course was needed or if additional information would be needed later and ATC said no. ATC then cleared us to a VOR which was on both the filed and cleared flight plan and the flight continued to the destination. CA loaded the FMS while FO was preflighting the aircraft. FO was pilot flying and therefore conducted the pre-start briefing. Neither pilot noticed the amendment on the PDC or corrected the FMS when the briefing was conducted. It was the first leg of a new crew change so that could have contributed to a lack of attention to detail or distraction. Complacency played a part as PDC are not amended frequently from filed routing. FO hadn't flown in a month and didn't notice how an amended clearance on a PDC looks and briefed what was loaded in the FMS. Whoever loads the FMS should double check the clearance and verify the cleared route and have the other pilot verify the fixes more closely against the clearance as some have the same initial fixes.

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.