Narrative:

As we were turned for a long final for runway xyl; outside of zzzzz intersection; we were asked repeatedly to report the field in sight. At the same time; the FMS was loaded and sequenced; but the CDI had not auto tuned; so the autopilot was not catching the localizer. My first officer was looking outside trying to find the field and I was splitting my attention between looking for the field; trying to not overfly the localizer and trying to figure out where the automation had failed. By the time I knew we were going to overfly the localizer I had turned off the autopilot and manually turn the aircraft towards the airport; while still trying to find the runway. Between the haze; the multiple straight lengths of pavement and xyr being closer and more prominent than xyl I was having a hard time picking out xyl and accidentally lined up on xyr.we were also told to keep our airspeed up to 180 knots. Because we were still trying to configure for landing; we were late making the switch over to tower. By the time that I realized that we were lined up for the wrong runway; we were below 1000 feet. I then called for and executed a go around procedure.

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Original NASA ASRS Text

Title: CRJ200 flight crew reported that during descent the autopilot was unable to capture the localizer.

Narrative: As we were turned for a long final for Runway XYL; outside of ZZZZZ Intersection; we were asked repeatedly to report the field in sight. At the same time; the FMS was loaded and sequenced; but the CDI had not auto tuned; so the Autopilot was not catching the localizer. My First Officer was looking outside trying to find the field and I was splitting my attention between looking for the field; trying to not overfly the localizer and trying to figure out where the automation had failed. By the time I knew we were going to overfly the localizer I had turned off the autopilot and manually turn the aircraft towards the airport; while still trying to find the runway. Between the haze; the multiple straight lengths of pavement and XYR being closer and more prominent than XYL I was having a hard time picking out XYL and accidentally lined up on XYR.We were also told to keep our airspeed up to 180 knots. Because we were still trying to configure for landing; we were late making the switch over to tower. By the time that I realized that we were lined up for the wrong runway; we were below 1000 feet. I then called for and executed a go around procedure.

Data retrieved from NASA's ASRS site 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.