Narrative:

Vectors to final runway 27, 30 degree intercept to localizer. Noticed that the airplane was not intercepting runway 27 localizer. We overshot and turned back towards localizer. Controllers mentioned we overshot and vectored another aircraft off a parallel approach for safety reasons. We saw the runway visually and continued uneventful to landing runway 27. We had planned earlier for an approach to runway 9 as per the ATIS we received. When given vectors for landing runway 27, we put in runway 27 in the FMC and extended the runway centerline. At the same time we got distracted with speed, heading and altitude changes. I ran the approach check, but failed to verify the new inbound course of 265 degrees in window. We both had 085 degrees still set in the course window. The aircraft that was vectored off the parallel runway was reclred for approach after we were cleared for the visual. The controller seemed glad to get rid of us to tower. I don't blame him. It was a stupid error.

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Original NASA ASRS Text

Title: AN ACR FLC FLYING B737-500 AT IAH FAILED TO INTERCEPT THE LOC COURSE AS INSTRUCTED BY ATC.

Narrative: VECTORS TO FINAL RWY 27, 30 DEG INTERCEPT TO LOC. NOTICED THAT THE AIRPLANE WAS NOT INTERCEPTING RWY 27 LOC. WE OVERSHOT AND TURNED BACK TOWARDS LOC. CTLRS MENTIONED WE OVERSHOT AND VECTORED ANOTHER ACFT OFF A PARALLEL APCH FOR SAFETY REASONS. WE SAW THE RWY VISUALLY AND CONTINUED UNEVENTFUL TO LNDG RWY 27. WE HAD PLANNED EARLIER FOR AN APCH TO RWY 9 AS PER THE ATIS WE RECEIVED. WHEN GIVEN VECTORS FOR LNDG RWY 27, WE PUT IN RWY 27 IN THE FMC AND EXTENDED THE RWY CTRLINE. AT THE SAME TIME WE GOT DISTRACTED WITH SPD, HEADING AND ALT CHANGES. I RAN THE APCH CHK, BUT FAILED TO VERIFY THE NEW INBOUND COURSE OF 265 DEGS IN WINDOW. WE BOTH HAD 085 DEGS STILL SET IN THE COURSE WINDOW. THE ACFT THAT WAS VECTORED OFF THE PARALLEL RWY WAS RECLRED FOR APCH AFTER WE WERE CLRED FOR THE VISUAL. THE CTLR SEEMED GLAD TO GET RID OF US TO TWR. I DON'T BLAME HIM. IT WAS A STUPID ERROR.

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.