Narrative:

When we reached las VOR, we tracked outbound on the wrong radial for the filed airway. We were tracking approximately 20 degrees off course for about 120 NM. ATC advised us, or asked 'where are you going?' we thought that we were on the airway, but when ATC asked us where we were going, we discovered our error and asked for direct slc. Direct slc was assigned.

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Original NASA ASRS Text

Title: DC9 CREW TRACKED WRONG RADIAL FOR FILED AIRWAY.

Narrative: WHEN WE REACHED LAS VOR, WE TRACKED OUTBOUND ON THE WRONG RADIAL FOR THE FILED AIRWAY. WE WERE TRACKING APPROX 20 DEGS OFF COURSE FOR ABOUT 120 NM. ATC ADVISED US, OR ASKED 'WHERE ARE YOU GOING?' WE THOUGHT THAT WE WERE ON THE AIRWAY, BUT WHEN ATC ASKED US WHERE WE WERE GOING, WE DISCOVERED OUR ERROR AND ASKED FOR DIRECT SLC. DIRECT SLC WAS ASSIGNED.

Data retrieved from NASA's ASRS site as of July 2007 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.