Narrative:

Amendment to the routing was missed by the flight crew on pre departure clearance. One fix was removed from the routing. ATC queried us during our turn from zzzzz to ZZZ. Prior to that we were unaware of the deviation. ATC's stated that we were 30 deg off course. I figured it was a data entry problem as our HSI showed us directly on course. After reviewing the pre departure clearance we realized that we forgot to delete a fix that was originally on the filed flight plan but not in the cleared clearance. Air traffic control also made a unwarranted sarcastic comment 'you are always right sir' when we queried to see if they still showed us off course when we provided the explanation that we were currently in a turn towards ZZZ.complacency and lack of recent flying experience this was my first leg in nearly 2 months. We read the clearance and completely missed the removal of one fix zzzzz from routing.we asked air traffic control where they thought we should have been; by the time that ATC found the error we were already in the turn towards a fix on the flight plan no further correction as needed.I will be more alert when transcribing pre departure clearance clearances particularly with reroutes. I believe that pre departure clearance could be less ambiguously formatted. Even though the captain did review my programming I believe it would be wise to reference the actual pre departure clearance clearance instead of the first officers transcription of the pre departure clearance clearance. When referencing the transcription of the pre departure clearance clearance it adds more layers of possible errors in transcription and data entry.

Related reports:

Google
 

Original NASA ASRS Text

Title: Air carrier First Officer reported experiencing a track heading deviation after missing an intersection on the routing received from the PDC.

Narrative: Amendment to the routing was missed by the flight crew on PDC. One fix was removed from the routing. ATC queried us during our turn from ZZZZZ to ZZZ. Prior to that we were unaware of the deviation. ATC's stated that we were 30 deg off course. I figured it was a data entry problem as our HSI showed us directly on course. After reviewing the PDC we realized that we forgot to delete a fix that was originally on the filed flight plan but not in the cleared clearance. Air Traffic Control also made a unwarranted sarcastic comment 'You are always right sir' when we queried to see if they still showed us off course when we provided the explanation that we were currently in a turn towards ZZZ.Complacency and lack of recent flying experience This was my first leg in nearly 2 months. We read the clearance and completely missed the removal of one fix ZZZZZ from routing.We asked Air Traffic Control where they thought we should have been; by the time that ATC found the error we were already in the turn towards a fix on the flight plan no further correction as needed.I will be more alert when transcribing PDC clearances particularly with reroutes. I believe that PDC could be less ambiguously formatted. Even though the captain did review my programming I believe it would be wise to reference the actual PDC clearance instead of the first officers transcription of the PDC clearance. When referencing the transcription of the PDC Clearance it adds more layers of possible errors in transcription and data entry.

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.