Narrative:

Prior to taxi on flight from bwi to msp, first officer and I briefed taxi to runway 10 from gate. After engine start, we obtained taxi clearance and were cleared txwys C, P, F to runway 10. We proceeded out from gate. I looked at the taxi chart and determined it was a right turn onto taxiway P. I missed the turn because I visually mistook runway 22 to be taxiway P. I heard ground tell the aircraft behind us that I missed taxiway P and I immediately braked. The nosewheel was just over the hold line for runway 22.

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Original NASA ASRS Text

Title: RWY INCURSION BY A DC9 WHEN THE PIC CROSSES RWY HOLD LINE AT TXWY C THINKING RWY 22 IS TXWY P AT BWI, MD.

Narrative: PRIOR TO TAXI ON FLT FROM BWI TO MSP, FO AND I BRIEFED TAXI TO RWY 10 FROM GATE. AFTER ENG START, WE OBTAINED TAXI CLRNC AND WERE CLRED TXWYS C, P, F TO RWY 10. WE PROCEEDED OUT FROM GATE. I LOOKED AT THE TAXI CHART AND DETERMINED IT WAS A R TURN ONTO TXWY P. I MISSED THE TURN BECAUSE I VISUALLY MISTOOK RWY 22 TO BE TXWY P. I HEARD GND TELL THE ACFT BEHIND US THAT I MISSED TXWY P AND I IMMEDIATELY BRAKED. THE NOSEWHEEL WAS JUST OVER THE HOLD LINE FOR RWY 22.

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.