Narrative:

Ground instructed us to taxi to runway 15R, and that the air carrier Y jet would follow us. I repeated the instructions back to ground and then repeated the instructions to the captain. The captain acknowledged. We both visually acknowledged the air carrier Y jet. I went heads down to finish inputting the numbers into the FMS. As I was inputting the numbers, I heard the captain say something. When I looked up to see what he was referring to, it appeared we were taxiing to runway 28 when we were cleared to runway 15. At that time we had just crossed runway 4/22. The captain apologized. Ground said no problem and gave us new taxi instructions from our present position.

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Original NASA ASRS Text

Title: CAPT OF B737 BECAME CONFUSED DURING TAXI FOR TKOF AND TAXIED TO THE WRONG RWY RESULTING IN XING ANOTHER RWY WITHOUT CLRNC.

Narrative: GND INSTRUCTED US TO TAXI TO RWY 15R, AND THAT THE ACR Y JET WOULD FOLLOW US. I REPEATED THE INSTRUCTIONS BACK TO GND AND THEN REPEATED THE INSTRUCTIONS TO THE CAPT. THE CAPT ACKNOWLEDGED. WE BOTH VISUALLY ACKNOWLEDGED THE ACR Y JET. I WENT HEADS DOWN TO FINISH INPUTTING THE NUMBERS INTO THE FMS. AS I WAS INPUTTING THE NUMBERS, I HEARD THE CAPT SAY SOMETHING. WHEN I LOOKED UP TO SEE WHAT HE WAS REFERRING TO, IT APPEARED WE WERE TAXIING TO RWY 28 WHEN WE WERE CLRED TO RWY 15. AT THAT TIME WE HAD JUST CROSSED RWY 4/22. THE CAPT APOLOGIZED. GND SAID NO PROB AND GAVE US NEW TAXI INSTRUCTIONS FROM OUR PRESENT POS.

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.