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A tower controller reported an aircraft turned base and lined up with the wrong runway; causing a near midair collision with traffic on short final.
| Attributes | |
| ACN | 1761748 |
| Time | |
| Date | 202009 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ABI.Tower |
| State Reference | TX |
| Environment | |
| Flight Conditions | VMC |
| Aircraft 1 | |
| Make Model Name | Light Transport Low Wing 2 Turbojet Eng |
| Flight Phase | Final Approach |
| Route In Use | None |
| Flight Plan | VFR |
| Aircraft 2 | |
| Make Model Name | Small Aircraft High Wing 1 Eng Fixed Gear |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Final Approach |
| Route In Use | Visual Approach |
| Flight Plan | VFR |
| Person 1 | |
| Function | Local |
| Qualification | Air Traffic Control Fully Certified |
| Experience | Air Traffic Control Time Certified In Pos 1 (yrs) 1 |
| Events | |
| Anomaly | ATC Issue All Types Conflict NMAC Deviation - Procedural Clearance Deviation - Track / Heading All Types |
Narrative:
Aircraft X was in my tower pattern; making right traffic for runway 17R. Aircraft Y was given left downwind for runway 17R. I told aircraft Y change to runway 17L; runway 17L clear to land; and he read it back. Aircraft X was on a 2-mile final when aircraft Y turned base. I gave aircraft Y; traffic 2-mile final; aircraft X; for the parallel runway. Aircraft Y said; I thought I was cleared to runway 17R. I said negative; runway 17L cleared to land. At the time aircraft X took evasive maneuvers. Aircraft Y landed on the right and aircraft X said we are on the go with that near miss. Aircraft Y was given possible pilot deviation. I'm not sure anything could have been done different from a controller stand point. Aircraft Y was cleared to land runway 17L and he read it back. It was a pilot deviation.
Original NASA ASRS Text
Title: A Tower Controller reported an aircraft turned base and lined up with the wrong runway; causing a NMAC with traffic on short final.
Narrative: Aircraft X was in my Tower pattern; making right traffic for Runway 17R. Aircraft Y was given left downwind for Runway 17R. I told Aircraft Y change to Runway 17L; Runway 17L clear to land; and he read it back. Aircraft X was on a 2-mile final when Aircraft Y turned base. I gave Aircraft Y; traffic 2-mile final; Aircraft X; for the parallel runway. Aircraft Y said; I thought I was cleared to Runway 17R. I said negative; Runway 17L cleared to land. At the time Aircraft X took evasive maneuvers. Aircraft Y landed on the right and Aircraft X said we are on the go with that near miss. Aircraft Y was given possible pilot deviation. I'm not sure anything could have been done different from a Controller stand point. Aircraft Y was cleared to land Runway 17L and he read it back. It was a pilot deviation.
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.