Narrative:

On taxi out to runway 9 in bos, we were given a taxi clearance of taxiway K, taxiway west, taxiway south, hold short of runway 4L. We were following a B737. As we approached the hold short line, we proceeded past the hold short line by a distance of about 5 ft. We immediately informed tower that we had crossed the hold short line. Tower cleared us across runway 4L to hold short of runway 9. No conflict with another aircraft at any time. An idea to prevent a recurrence would be a better marking of hold short line at runway 4L.

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Original NASA ASRS Text

Title: B737-800 FLC STOPPED PAST RWY HOLD SHORT LINE AND ADVISED TWR ACCORDINGLY. TWR CLRED THEM ON TO THE NEXT HOLD SHORT POINT AND NOTED THAT THERE WAS NO TFC CONFLICT.

Narrative: ON TAXI OUT TO RWY 9 IN BOS, WE WERE GIVEN A TAXI CLRNC OF TXWY K, TXWY W, TXWY S, HOLD SHORT OF RWY 4L. WE WERE FOLLOWING A B737. AS WE APCHED THE HOLD SHORT LINE, WE PROCEEDED PAST THE HOLD SHORT LINE BY A DISTANCE OF ABOUT 5 FT. WE IMMEDIATELY INFORMED TWR THAT WE HAD CROSSED THE HOLD SHORT LINE. TWR CLRED US ACROSS RWY 4L TO HOLD SHORT OF RWY 9. NO CONFLICT WITH ANOTHER ACFT AT ANY TIME. AN IDEA TO PREVENT A RECURRENCE WOULD BE A BETTER MARKING OF HOLD SHORT LINE AT RWY 4L.

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.