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Cos tower controller reported an aircraft landed on a taxiway.
| Attributes | |
| ACN | 1582421 |
| Time | |
| Date | 201810 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | COS.Airport |
| State Reference | CO |
| Aircraft 1 | |
| Make Model Name | Small Aircraft Low Wing 1 Eng Retractable Gear |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Landing |
| 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) .2 |
| Events | |
| Anomaly | ATC Issue All Types Deviation - Procedural Clearance Ground Incursion Taxiway |
Narrative:
Aircraft X was inbound from the north assigned a left downwind for runway 35L; on initial call I widened out his downwind approach by 10 degrees as he appeared to be tracking up final for runway 17R. He entered the left downwind for runway 35L I cleared him to land on runway 35L following a cessna in the pattern ahead. Aircraft X read back the clearance correctly for landing runway 35L. I then asked the pilot to confirm he had the cessna ahead insight; he informed he did not. I then told aircraft X to extend his downwind and I would call his base to allow for appropriate separation with the cessna ahead. Then told aircraft X to turn his base and again cleared to land runway 35L; pilot acknowledged the clearance but did not read back the runway. Pilot asked for a wind-check and was given one. I observed what looked like from the tower aircraft X lined up for runway 35L. Then turned my attention to moving pattern traffic around for a runway change. The ground control/controller in charge (ground control/ controller in charge) then stated he landed on twy a. I looked back and confirmed he was in fact rolling out on the twy. I contacted aircraft X and informed him it appeared he just landed on twy a and to contact ground control for further instructions.I recommend we have a tower with a better perspective and closer proximity to the approach ends of 35L and 35R.
Original NASA ASRS Text
Title: COS Tower controller reported an aircraft landed on a taxiway.
Narrative: Aircraft X was inbound from the north assigned a left downwind for RWY 35L; on initial call I widened out his downwind approach by 10 degrees as he appeared to be tracking up final for RWY 17R. He entered the left downwind for RWY 35L I cleared him to land on RWY 35L following a Cessna in the pattern ahead. Aircraft X read back the clearance correctly for landing RWY 35L. I then asked the pilot to confirm he had the Cessna ahead insight; he informed he did not. I then told Aircraft X to extend his downwind and I would call his base to allow for appropriate separation with the Cessna ahead. Then told Aircraft X to turn his base and again cleared to land RWY 35L; pilot acknowledged the clearance but did not read back the runway. Pilot asked for a wind-check and was given one. I observed what looked like from the tower Aircraft X lined up for RWY 35L. Then turned my attention to moving pattern traffic around for a runway change. The GC/CIC (Ground Control/ Controller in Charge) then stated he landed on TWY A. I looked back and confirmed he was in fact rolling out on the TWY. I contacted Aircraft X and informed him it appeared he just landed on TWY A and to contact GC for further instructions.I recommend we have a tower with a better perspective and closer proximity to the approach ends of 35L and 35R.
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.