Narrative:

After landing and clearing runway 34R we understood, or I should say that I understood, taxi instructions to be be taxi across 32 hold short of 34L on K-5. This is a normal occurrence and a normal clearance. After crossing 32 we were given clearance to cross 34L. Upon reaching ground frequency he notified us that we were not cleared to cross 32 and say intentions. None were given. The first officer said that he heard hold short of 32 but did not say anything when I ventured across 32. This was the end of an 8 leg 12 hour day, no excuses, but perhaps I heard what I thought I usually always hear. There happened to be an emergency occurring with a GA aircraft with possible gear problems and perhaps this and all the communication going on takes my attention away at a crucial time. Supplemental information from acn 210735. At the time there was an emergency with an small aircraft landing with gear light problems, conversation between controller and led to confusion about the small aircraft landing on the east side with emergency equipment on the west. The small aircraft didn't know whether to land on the 34 runway to go around or land on the runway 34L with us between the runway my attention was to locate the small aircraft on K5. ATC cleared us to cross 34L and contacted ground. Ground advise us we had crossed 32 without clearance.

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Original NASA ASRS Text

Title: AN LTT ACR CREW TAXIED ACROSS AN ACTIVE RWY WITHOUT CLRNC. AN EMER WAS IN PROGRESS CAUSING FREQ CONGESTION AND GENERAL CONFUSION.

Narrative: AFTER LNDG AND CLRING RWY 34R WE UNDERSTOOD, OR I SHOULD SAY THAT I UNDERSTOOD, TAXI INSTRUCTIONS TO BE BE TAXI ACROSS 32 HOLD SHORT OF 34L ON K-5. THIS IS A NORMAL OCCURRENCE AND A NORMAL CLRNC. AFTER XING 32 WE WERE GIVEN CLRNC TO CROSS 34L. UPON REACHING GND FREQ HE NOTIFIED US THAT WE WERE NOT CLRED TO CROSS 32 AND SAY INTENTIONS. NONE WERE GIVEN. THE FO SAID THAT HE HEARD HOLD SHORT OF 32 BUT DID NOT SAY ANYTHING WHEN I VENTURED ACROSS 32. THIS WAS THE END OF AN 8 LEG 12 HR DAY, NO EXCUSES, BUT PERHAPS I HEARD WHAT I THOUGHT I USUALLY ALWAYS HEAR. THERE HAPPENED TO BE AN EMER OCCURRING WITH A GA ACFT WITH POSSIBLE GEAR PROBLEMS AND PERHAPS THIS AND ALL THE COM GOING ON TAKES MY ATTN AWAY AT A CRUCIAL TIME. SUPPLEMENTAL INFO FROM ACN 210735. AT THE TIME THERE WAS AN EMER WITH AN SMA LNDG WITH GEAR LIGHT PROBLEMS, CONVERSATION BTWN CTLR AND LED TO CONFUSION ABOUT THE SMA LNDG ON THE E SIDE WITH EMER EQUIP ON THE W. THE SMA DIDN'T KNOW WHETHER TO LAND ON THE 34 RWY TO GAR OR LAND ON THE RWY 34L WITH US BTWN THE RWY MY ATTN WAS TO LOCATE THE SMA ON K5. ATC CLRED US TO CROSS 34L AND CONTACTED GND. GND ADVISE US WE HAD CROSSED 32 WITHOUT CLRNC.

Data retrieved from NASA's ASRS site as of July 2007 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.