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Fai tower controller reported a traffic conflict in the pattern due to an aircraft that drifted off course.
| Attributes | |
| ACN | 1454909 |
| Time | |
| Date | 201706 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | FAI.Tower |
| State Reference | AK |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Small Aircraft High Wing 1 Eng Fixed Gear |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Initial Approach |
| Flight Plan | VFR |
| Aircraft 2 | |
| Make Model Name | Small Aircraft High Wing 1 Eng Fixed Gear |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Initial Approach |
| Flight Plan | VFR |
| Person 1 | |
| Function | Local Instructor |
| Qualification | Air Traffic Control Fully Certified |
| Events | |
| Anomaly | ATC Issue All Types Conflict NMAC Deviation - Procedural Clearance Deviation - Track / Heading All Types |
| Miss Distance | Horizontal 1093 Vertical 200 |
Narrative:
Aircraft Y was in left closed traffic for runway 2W (water runway) instructed to extend upwind. Aircraft X was entering the right downwind from the north for runway 2R. I was the instructor to the local control developmental who was on the line coordinating with the radar handoff position regarding multiple different items. I looked over the trainee's shoulder at the tower radar display and observed aircraft Y had drifted about a mile east of the upwind and was now on a collision course with aircraft X entering the downwind.I instructed aircraft Y to turn left crosswind immediately and issued traffic. I issued traffic to aircraft X and told him to start a climb. Aircraft Y was observed at 1700 ft while aircraft X was observed at 1900 ft. Traffic pattern altitude at fai is 1500 ft. Aircraft X reported aircraft Y in sight and was instructed to maintain visual separation. Aircraft Y passed east and above of aircraft X. Radar data shows lateral separation of .18 NM and 200 ft. Surface wind was 020 at 10 knots.VFR pilots must; to the greatest extent possible; maintain runway heading while in the upwind and pattern altitude while in the traffic pattern.
Original NASA ASRS Text
Title: FAI Tower Controller reported a traffic conflict in the pattern due to an aircraft that drifted off course.
Narrative: Aircraft Y was in left closed traffic for Runway 2W (Water runway) instructed to extend upwind. Aircraft X was entering the right downwind from the north for Runway 2R. I was the Instructor to the Local Control developmental who was on the line coordinating with the radar handoff position regarding multiple different items. I looked over the trainee's shoulder at the tower radar display and observed Aircraft Y had drifted about a mile east of the upwind and was now on a collision course with Aircraft X entering the downwind.I instructed Aircraft Y to turn left crosswind immediately and issued traffic. I issued traffic to Aircraft X and told him to start a climb. Aircraft Y was observed at 1700 ft while Aircraft X was observed at 1900 ft. Traffic pattern altitude at FAI is 1500 ft. Aircraft X reported Aircraft Y in sight and was instructed to maintain visual separation. Aircraft Y passed east and above of Aircraft X. Radar data shows lateral separation of .18 NM and 200 ft. Surface wind was 020 at 10 Knots.VFR pilots must; to the greatest extent possible; maintain runway heading while in the upwind and pattern altitude while in the traffic pattern.
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.