Narrative:

We got clearance to taxi via D13 to runway 25R. I barely taxied from spot 8; and all I had signage for that I could see; was straight ahead E13 and nothing said D13 or to my left taxiway romeo. I stopped; told the first officer this is confusing how the signage was and was not sure. I (while stopped); studied the jepp 10-9 page some more (we both did.) I thought I was on D13; but I must have been right before it. (We were the only jet at the time when we taxied out and when we were maneuvering about.) according to the chart; I thought; if we were at D13; left or straight gets you to 25R. I sadly turned left; right before D13. I turned right immediately; turned right of which I now know was taxiway romeo. No signage I could see till right after I turn right on romeo; looking back I saw the taxiway romeo sign only after you go past it. I maneuvered back to where D13 would have taken us. Again; no planes around us at the time. Very discouraged. How did we mess this up? Ground and tower said nothing to us; and were quite kind. Next time; when in doubt; stop like I did; but this time; ask the controller for clarification.

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Original NASA ASRS Text

Title: A B737-300 flight crew was confused by a taxi clearance at PHX when no immediate sign was available to identify taxiway D13.

Narrative: We got clearance to taxi via D13 to Runway 25R. I barely taxied from Spot 8; and all I had signage for that I could see; was straight ahead E13 and nothing said D13 or to my left Taxiway Romeo. I stopped; told the First Officer this is confusing how the signage was and was not sure. I (while stopped); studied the Jepp 10-9 page some more (we both did.) I thought I was on D13; but I must have been right before it. (We were the only jet at the time when we taxied out and when we were maneuvering about.) According to the chart; I thought; if we were at D13; left or straight gets you to 25R. I sadly turned left; right before D13. I turned right immediately; turned right of which I now know was Taxiway Romeo. No signage I could see till right AFTER I turn right on Romeo; looking back I saw the Taxiway Romeo sign only after you go past it. I maneuvered back to where D13 would have taken us. Again; no planes around us at the time. Very discouraged. How did we mess this up? Ground and Tower said nothing to us; and were quite kind. Next time; when in doubt; stop like I did; but this time; ask the controller for clarification.

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.