Narrative:

We were cleared to taxi. My mental picture of the taxi was to the end of taxiway a and right turn on the runway. I called for below the line after being cleared to takeoff. When we should have turned onto the runway; the checklist item required me to check the engine instruments. When I looked back up we noticed we should have turned. We informed ground and they said continue on [current taxiway] and turn around on the ramp and taxi back. We asked if the taxi was stressed for our aircraft. While standing by we contacted our ramp maintenance to tow us. Ground control came back and gave us taxi instructions to continue on [current taxiway] that our company aircraft just did the same thing. We proceeded as instructed. After turning around and back on to taxi a; we were told that we took out a taxi light. We then taxi back to gate to have gear inspected. No damage was found. Then continued flight. Both heads down in cockpit while aircraft was taxing.

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Original NASA ASRS Text

Title: Air carrier Captain reported being distracted by checklist items during taxi resulting in a taxiway incursion and contact with a taxiway light.

Narrative: We were cleared to taxi. My mental picture of the taxi was to the end of Taxiway A and right turn on the runway. I called for below the line after being cleared to takeoff. When we should have turned onto the runway; the checklist item required me to check the engine instruments. When I looked back up we noticed we should have turned. We informed Ground and they said continue on [current taxiway] and turn around on the ramp and taxi back. We asked if the taxi was stressed for our aircraft. While standing by we contacted our Ramp Maintenance to tow us. Ground Control came back and gave us taxi instructions to continue on [current taxiway] that our company aircraft just did the same thing. We proceeded as instructed. After turning around and back on to taxi A; we were told that we took out a taxi light. We then taxi back to gate to have gear inspected. No damage was found. Then continued flight. Both heads down in cockpit while aircraft was taxing.

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.