Narrative:

After pushing off the gate at phl; we proceeded as cleared to spot 11. Ground control gave us taxi instructions paraphrased as follows; 'taxi H; hold short runway 35; prepare for reroute instructions.' as I turned toward 'H' from the ramp; my attention was on an rj taxiing south on 'east.' one of us had to yield otherwise we would have met at the [taxiway] east/H intersection. I slowed; intending to stop when ground control told us to proceed as the rj was to follow us. The rj was slowing; but took its time coming to a stop requiring my complete attention until it did so. Once that was settled; it was time to continue taxiing. My mind was telling me to turn right onto 'east' (standard routing). As I started to make the right turn onto 'east;' my first officer; who was talking to ground control; recognized my error and waved me to stop the turn and continue ahead. I started to brake; turn back left to consider what was going wrong; but I was too committed. Had I continued the left turn; I would have crossed the hold short line for runway 35. Confused; I took the safest option and continued onto east. My first officer confessed my error and we were given subsequent taxi instructions from our present position.the risk factors that contributed to my mistakes were a potential conflict with another taxiing aircraft; an unexpected non-standard taxi route; and the reroute alert. I realize now that my best option to minimize these risks was to stop the aircraft (where have I heard that one before?); even though ground control prodded us to continue ahead of the rj. Then; I should have verbalized my taxi instructions (which I normally do) to ensure we both were on the correct page. I do know better than to allow ATC to rush me into a corner.

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Original NASA ASRS Text

Title: B737-700 flight crew reports a taxiway incursion at PHL when the Captain becomes confused taxiing from spot 11 via Taxiway H while the First Officer is copying a reroute.

Narrative: After pushing off the gate at PHL; we proceeded as cleared to Spot 11. Ground Control gave us taxi instructions paraphrased as follows; 'Taxi H; hold short Runway 35; prepare for reroute instructions.' As I turned toward 'H' from the ramp; my attention was on an RJ taxiing south on 'E.' One of us had to yield otherwise we would have met at the [Taxiway] E/H Intersection. I slowed; intending to stop when Ground Control told us to proceed as the RJ was to follow us. The RJ was slowing; but took its time coming to a stop requiring my complete attention until it did so. Once that was settled; it was time to continue taxiing. My mind was telling me to turn right onto 'E' (standard routing). As I started to make the right turn onto 'E;' my First Officer; who was talking to Ground Control; recognized my error and waved me to stop the turn and continue ahead. I started to brake; turn back left to consider what was going wrong; but I was too committed. Had I continued the left turn; I would have crossed the hold short line for Runway 35. Confused; I took the safest option and continued onto east. My First Officer confessed my error and we were given subsequent taxi instructions from our present position.The risk factors that contributed to my mistakes were a potential conflict with another taxiing aircraft; an unexpected non-standard taxi route; and the reroute alert. I realize now that my best option to minimize these risks was to stop the aircraft (where have I heard that one before?); even though Ground Control prodded us to continue ahead of the RJ. Then; I should have verbalized my taxi instructions (which I normally do) to ensure we both were on the correct page. I do know better than to allow ATC to rush me into a corner.

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.