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M98 TRACON controller reported an arriving aircraft flew the RNAV approach course even though they had not been cleared to for it.
| Attributes | |
| ACN | 1522689 |
| Time | |
| Date | 201803 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | M98.TRACON |
| State Reference | MN |
| Aircraft 1 | |
| Make Model Name | A319 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Final Approach Initial Approach |
| Route In Use | Other Instrument Approach |
| Flight Plan | IFR |
| Person 1 | |
| Function | Approach |
| Qualification | Air Traffic Control Fully Certified |
| Experience | Air Traffic Control Time Certified In Pos 1 (yrs) 18.3 |
| Events | |
| Anomaly | Deviation - Altitude Excursion From Assigned Altitude Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy Deviation - Track / Heading All Types |
Narrative:
Aircraft X flew the RNAV approach without being cleared for the approach. Aircraft X turned towards airport and came into conflict with the other traffic on the parallel runway and the traffic on the same runway. The controller was lucky they assigned the aircraft 5;000 feet or he would have been in conflict with multiple aircraft on final. We advertise visual and RNAV approaches on VFR days. In my opinion this causes some aircraft to fly the RNAV approach without being cleared for it. The vast majority of the aircraft that fly into this airport can't even fly the RNAV approach due to equipment in the aircraft. Our runway configuration is not conducive to the RNAV approach. Aircraft need to be sequenced and it is impossible to let aircraft fly the RNAV during airport 'rushes'. I recommend we advertise ILS/visual approaches on VFR days. Advertising the RNAV approach will lead to a possible midair incident!
Original NASA ASRS Text
Title: M98 TRACON Controller reported an arriving aircraft flew the RNAV Approach course even though they had not been cleared to for it.
Narrative: Aircraft X flew the RNAV Approach without being cleared for the approach. Aircraft X turned towards airport and came into conflict with the other traffic on the parallel runway and the traffic on the same runway. The controller was LUCKY they assigned the aircraft 5;000 feet or he would have been in conflict with MULTIPLE aircraft on final. We advertise Visual and RNAV approaches on VFR days. In my opinion this causes some aircraft to fly the RNAV Approach without being cleared for it. The VAST majority of the aircraft that fly into this airport can't even fly the RNAV approach due to equipment in the aircraft. Our runway configuration is not conducive to the RNAV Approach. Aircraft need to be sequenced and it is impossible to let aircraft fly the RNAV during airport 'rushes'. I recommend we advertise ILS/Visual Approaches on VFR days. Advertising the RNAV Approach will lead to a possible midair incident!
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.