Narrative:

We departed gate for departure; as we were enroute for departure we were notified by ramp that airport vehicles saw something wrong with one of our tires and to stop so they could inspect it. Maintenance came out and determined that a large clump of tar and asphalt was stuck to the tire and it needed to be changed. We returned to a gate where the tire was changed. This resulted in a 1:31 delay causing several of our passengers to miss connections. This could have caused a real safety issue if the attached asphalt was not noticed and it was flung off at high speed during departure. The city had apparently patched a hole in the concrete at our gate just under our right main gear and the tire sank into the asphalt. This was not apparent during either the maintenance or relief pilot walkaround; but when the aircraft was pushed off the gate the asphalt attached itself to the tire. Holes in the concrete should never be patched with this type of material; but need to be patched with concrete or a metal plate until a permanent repair can be made. I believe who ever authorized this type of repair should be responsible for our air carrier's expenses.

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Original NASA ASRS Text

Title: An Airbus flight crew was alerted by ground control of a concern with a main tire. Airport employees noticed a large clump of tar had adhered to the tire and maintenance determined the tire needed to be changed.

Narrative: We departed gate for departure; as we were enroute for departure we were notified by ramp that airport vehicles saw something wrong with one of our tires and to stop so they could inspect it. Maintenance came out and determined that a large clump of tar and asphalt was stuck to the tire and it needed to be changed. We returned to a gate where the tire was changed. This resulted in a 1:31 delay causing several of our passengers to miss connections. This could have caused a real safety issue if the attached asphalt was not noticed and it was flung off at high speed during departure. The city had apparently patched a hole in the concrete at our gate just under our right main gear and the tire sank into the asphalt. This was not apparent during either the maintenance or Relief Pilot walkaround; but when the aircraft was pushed off the gate the asphalt attached itself to the tire. Holes in the concrete should never be patched with this type of material; but need to be patched with concrete or a metal plate until a permanent repair can be made. I believe who ever authorized this type of repair should be responsible for our air carrier's expenses.

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.