Narrative:

Preflight checks were normal and a route check was completed prior to the flight crew briefing. After level off; we were cleared direct to aex and the cqy arrival into dfw. After passing aex; houston center asked us where we were going and did we make a wrong turn. I replied that we were cleared direct aex; then the arrival. Both of us checked the FMC; made sure that LNAV and VNAV were engaged; then realized that nobbl and fzt were not in the box. Houston then cleared us to cqy; which we were already doing; and the flight continued without incident.

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Original NASA ASRS Text

Title: B737-800 flight crew was alerted to a track deviation by ATC and discovered that the arrival procedure in the FMC was incomplete.

Narrative: Preflight checks were normal and a route check was completed prior to the flight crew briefing. After level off; we were cleared direct to AEX and the CQY arrival into DFW. After passing AEX; Houston Center asked us where we were going and did we make a wrong turn. I replied that we were cleared direct AEX; then the arrival. Both of us checked the FMC; made sure that LNAV and VNAV were engaged; then realized that NOBBL and FZT were not in the box. Houston then cleared us to CQY; which we were already doing; and the flight continued without incident.

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.