Narrative:

After landing; tower cleared us to taxi to the ramp via a. On taxi chart; a is depicted as parallel to runway. Exited the runway at C. On C; tower stated; 'your instructions were to join a.' I queried; 'would you like us to join a here?' ATC said 'affirmative.' as we taxied down a; noticed taxi sign at end of runway joining a to the end of the runway. This is not depicted on jepp charts. I should have asked where ATC wanted us to join a. Commercial charts need to be corrected to show a at the end of the runway. ATC needs to be clear on their instructions.

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Original NASA ASRS Text

Title: Air Carrier First Officer reports a taxiway incursion at MMTO due to a vague clearance and depiction of the A taxiway on the airport diagram.

Narrative: After landing; Tower cleared us to taxi to the ramp via A. On taxi chart; A is depicted as parallel to runway. Exited the runway at C. On C; tower stated; 'Your instructions were to join A.' I queried; 'would you like us to join A here?' ATC said 'affirmative.' As we taxied down A; noticed taxi sign at end of runway joining A to the end of the runway. This is NOT depicted on Jepp charts. I should have asked where ATC wanted us to join A. Commercial charts need to be corrected to show A at the end of the runway. ATC needs to be clear on their instructions.

Data retrieved from NASA's ASRS site as of July 2013 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.