Narrative:

During taxi we were clearing taxiway B to the ramp. Once making our turn from taxiway F to taxiway B we were instructed to follow a B737 clearing at taxiway east with our position it appeared the B737 had passed taxiway B and was turning onto taxiway a. In reality we were on taxiway za and the B737 was still on taxiway east. Then I saw the hold short lines for runway 13L as the captain stopped the aircraft. We passed the lines by 10-15 ft. The B737 had already cleared the runway so ground cleared us onto the runway 13L to follow him to the ramp.

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Original NASA ASRS Text

Title: CREW HAD RWY INCURSION AT TXWY ZA AND RWY 31R AT JFK.

Narrative: DURING TAXI WE WERE CLRING TXWY B TO THE RAMP. ONCE MAKING OUR TURN FROM TXWY F TO TXWY B WE WERE INSTRUCTED TO FOLLOW A B737 CLRING AT TXWY E WITH OUR POS IT APPEARED THE B737 HAD PASSED TXWY B AND WAS TURNING ONTO TXWY A. IN REALITY WE WERE ON TXWY ZA AND THE B737 WAS STILL ON TXWY E. THEN I SAW THE HOLD SHORT LINES FOR RWY 13L AS THE CAPT STOPPED THE ACFT. WE PASSED THE LINES BY 10-15 FT. THE B737 HAD ALREADY CLRED THE RWY SO GND CLRED US ONTO THE RWY 13L TO FOLLOW HIM TO THE RAMP.

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.