Narrative:

Last day of a 3 day trip. Final leg home to bwi. We were cleared for an ILS approach to runway 15R but intercepted and tracked the ILS for runway 15L. I noticed the error about 5 mi out (we had just acquired the airport visually). Shortly thereafter, tower cleared us to land on runway 15R. I directed the first officer, who was flying, to land on that runway, which he did. I should have noticed that the first officer was using the approach plate and frequency for runway 15L during the initial approach briefing. While he gave his briefing, I was distraction by a frequency change to a very busy ATC approach control sector. I should have requested the first officer to rebrief, but I didn't. The second chance I had was when I changed from the bwi VOR frequency (set for DME distance to the airport) to the ILS frequency. I was late doing this, waiting until we were turning on final, and instead of using my own approach plate, I glanced over at the first officer's navigation frequency and set it. Bad decision. It is always best to use a separate source of information whenever possible. I had the correct approach plate out and if I had used that source we would have caught our error much sooner.

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Original NASA ASRS Text

Title: AN ACR FLC FLYING B737-200 AT BWI TRACKS INBOUND TO THE ARPT ON THE WRONG PARALLEL ILS.

Narrative: LAST DAY OF A 3 DAY TRIP. FINAL LEG HOME TO BWI. WE WERE CLRED FOR AN ILS APCH TO RWY 15R BUT INTERCEPTED AND TRACKED THE ILS FOR RWY 15L. I NOTICED THE ERROR ABOUT 5 MI OUT (WE HAD JUST ACQUIRED THE ARPT VISUALLY). SHORTLY THEREAFTER, TWR CLRED US TO LAND ON RWY 15R. I DIRECTED THE FO, WHO WAS FLYING, TO LAND ON THAT RWY, WHICH HE DID. I SHOULD HAVE NOTICED THAT THE FO WAS USING THE APCH PLATE AND FREQ FOR RWY 15L DURING THE INITIAL APCH BRIEFING. WHILE HE GAVE HIS BRIEFING, I WAS DISTR BY A FREQ CHANGE TO A VERY BUSY ATC APCH CTL SECTOR. I SHOULD HAVE REQUESTED THE FO TO REBRIEF, BUT I DIDN'T. THE SECOND CHANCE I HAD WAS WHEN I CHANGED FROM THE BWI VOR FREQ (SET FOR DME DISTANCE TO THE ARPT) TO THE ILS FREQ. I WAS LATE DOING THIS, WAITING UNTIL WE WERE TURNING ON FINAL, AND INSTEAD OF USING MY OWN APCH PLATE, I GLANCED OVER AT THE FO'S NAV FREQ AND SET IT. BAD DECISION. IT IS ALWAYS BEST TO USE A SEPARATE SOURCE OF INFO WHENEVER POSSIBLE. I HAD THE CORRECT APCH PLATE OUT AND IF I HAD USED THAT SOURCE WE WOULD HAVE CAUGHT OUR ERROR MUCH SOONER.

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.