Narrative:

Taxiing at stl on runway 6 to cross runway 12R and hold short of runway 12L. I didn't realize runway 13 was also in use, and due to traffic holding on runway 13, I mistook it for runway 12L and taxied past the runway 12L hold short line by about 10 ft. I have been in stl many times, first time for this. Supplemental information from acn 379930: falcon 50 was position and hold on runway 13. Mistook that aircraft to be on runway 12L and overran the hold short line of runway 12L by about 10 ft.

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Original NASA ASRS Text

Title: AN ACR DC9 FLC TAXIED BEYOND THE HOLD LINE FOR RWY 12L WHEN THEY CONFUSED RWY 13 FOR RWY 12L. THE FLC WAS FAMILIAR WITH THE ARPT.

Narrative: TAXIING AT STL ON RWY 6 TO CROSS RWY 12R AND HOLD SHORT OF RWY 12L. I DIDN'T REALIZE RWY 13 WAS ALSO IN USE, AND DUE TO TFC HOLDING ON RWY 13, I MISTOOK IT FOR RWY 12L AND TAXIED PAST THE RWY 12L HOLD SHORT LINE BY ABOUT 10 FT. I HAVE BEEN IN STL MANY TIMES, FIRST TIME FOR THIS. SUPPLEMENTAL INFO FROM ACN 379930: FALCON 50 WAS POS AND HOLD ON RWY 13. MISTOOK THAT ACFT TO BE ON RWY 12L AND OVERRAN THE HOLD SHORT LINE OF RWY 12L BY ABOUT 10 FT.

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.