Narrative:

We were at 4000 feet downwind runway 16R; a small aircraft; traveling east to west; passed underneath at 400 feet below us. We received a TA followed by an RA to climb. We climbed to 4200 feet and then returned back to 4000 feet. A beautiful VMC day for flying.

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Original NASA ASRS Text

Title: Air carrier flight crew reported a NMAC and Resolution Advisory event with a VFR aircraft while on downwind to AFW.

Narrative: We were at 4000 feet downwind Runway 16R; a small aircraft; traveling east to west; passed underneath at 400 feet below us. We received a TA followed by an RA to climb. We climbed to 4200 feet and then returned back to 4000 feet. A beautiful VMC day for flying.

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.