Narrative:

Landed rjaa. [Received our gate assignment as we taxied] off 16R. Given ground clearance to taxi B hold short S4. Nighttime taxi. Then clearance right [left] on S4 left on charlie. The right [left] turn onto S4 was done and we then had trouble deciphering where C was because S4 was a 110 [70] degree right [left] turn and then C was another immediate 90 degree left turn; however taxiway C was not marked due to the new construction I believe. We were taxiing at about 4 or 5 miles an hour and then saw a sign for C to our left but this was not visible until passing charlie. Extremely poor signage. I believe this should be marked as a hotspot due to the poor signage and/or improved signage provided. We notified ground that we inadvertently passed C due to the poor signage and ground then cleared us straight on S4 and left on right to the gate. It was not an issue; there were no other aircraft in the area and there were no saftey issues. Ground did not have an issue with it.

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Original NASA ASRS Text

Title: B777 First Officer reports a taxiway incursion at RJAA while attempting to comply with taxi instructions to the gate after landing. A complicated taxi route; poor signage and construction were cited as factors.

Narrative: Landed RJAA. [Received our gate assignment as we taxied] off 16R. Given ground clearance to taxi B hold short S4. Nighttime taxi. Then clearance right [left] on S4 left on Charlie. the right [left] turn onto S4 was done and we then had trouble deciphering where C was because S4 was a 110 [70] degree right [left] turn and then C was another immediate 90 degree left turn; however Taxiway C was not marked due to the new construction I believe. We were taxiing at about 4 or 5 miles an hour and then saw a sign for C to our left but this was not visible until PASSING Charlie. Extremely poor signage. I believe this should be marked as a hotspot due to the poor signage and/or improved signage provided. We notified ground that we inadvertently passed C due to the poor signage and Ground then cleared us straight on S4 and left on R to the gate. It was not an issue; there were no other aircraft in the area and there were no saftey issues. Ground did not have an issue with it.

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.