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Tower supervisor witnessed an asde-X alarm when traffic was cleared to land on an occupied runway forcing a landing runway change; the reporter indicated the local controller should have scanned the runway before issuing a clearance.
| Attributes | |
| ACN | 1003820 |
| Time | |
| Date | 201204 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | HCF.Tower |
| State Reference | HI |
| Aircraft 1 | |
| Make Model Name | Caravan 208B |
| Flight Phase | Final Approach |
| Route In Use | None |
| Flight Plan | VFR |
| Aircraft 2 | |
| Make Model Name | Skyhawk 172/Cutlass 172 |
| Flight Phase | Taxi |
| Route In Use | None |
| Flight Plan | VFR |
| Person 1 | |
| Function | Supervisor / CIC |
| Qualification | Air Traffic Control Fully Certified |
| Events | |
| Anomaly | ATC Issue All Types Conflict Ground Conflict Critical |
Narrative:
C172 holding in position on runway 4L. C208 cleared to land on runway 4L. Asde-X alarm advised; 'runway 4L occupied; go around'. C208 advised to; 'change their runway to runway 4R; cleared to land'. There was a previous go around that had occurred a few minutes prior. The controller may have not used a pad to write down the incoming aircraft as a reminder. Controller could improve his/her scan.
Original NASA ASRS Text
Title: Tower Supervisor witnessed an ASDE-X alarm when traffic was cleared to land on an occupied runway forcing a landing runway change; the reporter indicated the Local Controller should have scanned the runway before issuing a clearance.
Narrative: C172 holding in position on Runway 4L. C208 cleared to land on Runway 4L. ASDE-X ALARM advised; 'Runway 4L occupied; Go Around'. C208 advised to; 'change their runway to Runway 4R; cleared to land'. There was a previous go around that had occurred a few minutes prior. The Controller may have not used a pad to write down the incoming aircraft as a reminder. Controller could improve his/her scan.
Data retrieved from NASA's ASRS site as of July 2013 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.