Narrative:

On visual to runway 3R dtw, we noted an aircraft, we thought was a jumbo, overshoot his assigned runway 4L and we received a TCASII advisory. We were completing a turn to final as he was. It appeared he probably lined up on runway 4R (closed) inadvertently, or overshot runway 4L. He corrected after we asked the tower if they had the aircraft under control. Uneventful landing followed.

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Original NASA ASRS Text

Title: ACR OVERSHOOTS FINAL APCH COURSE DURING PARALLEL RWY OPS AT DTW.

Narrative: ON VISUAL TO RWY 3R DTW, WE NOTED AN ACFT, WE THOUGHT WAS A JUMBO, OVERSHOOT HIS ASSIGNED RWY 4L AND WE RECEIVED A TCASII ADVISORY. WE WERE COMPLETING A TURN TO FINAL AS HE WAS. IT APPEARED HE PROBABLY LINED UP ON RWY 4R (CLOSED) INADVERTENTLY, OR OVERSHOT RWY 4L. HE CORRECTED AFTER WE ASKED THE TWR IF THEY HAD THE ACFT UNDER CTL. UNEVENTFUL LNDG FOLLOWED.

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.