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Sna controller issued a go around based upon an asde-X alarm; but the aircraft on short final elected to land. The reporter alleged numerous aircraft are sent around needlessly because of the asde-X alert parameters.
| Attributes | |
| ACN | 959920 |
| Time | |
| Date | 201107 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | SNA.Airport |
| State Reference | CA |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | HS 125 Series |
| Flight Phase | Landing |
| Flight Plan | IFR |
| Person 1 | |
| Function | Local |
| Qualification | Air Traffic Control Fully Certified |
| Events | |
| Anomaly | ATC Issue All Types Deviation - Procedural Clearance Ground Event / Encounter Other / Unknown |
Narrative:
Aircraft X; [an HS25] was on approach to runway 19R following a PA46. Both aircraft sequenced by sct. Spacing was tight however the PA46 was able to exit the runway prior to aircraft X being over the threshold. When the PA46 was clear of the runway and the HS25 was very short final; the asde-X alarm went off and said to send the HS25 around. I complied and issued a go around instruction to aircraft X; however the pilot read back; 'roger; cleared to land;' and then touched down on the runway during his read back. I informed the HS25 that I had issued a go around because of equipment; but that the runway was clear and then told him to exit and contract ground. Recommend a change to the asde-X parameters because of this incident and many others like it. Everyday at sna aircraft are needlessly sent around when the runway is in fact clear. This is especially a problem on runway 19L which is only 3;500 ft long and has numerous small aircraft in the pattern.
Original NASA ASRS Text
Title: SNA Controller issued a go around based upon an ASDE-X alarm; but the aircraft on short final elected to land. The reporter alleged numerous aircraft are sent around needlessly because of the ASDE-X alert parameters.
Narrative: Aircraft X; [an HS25] was on approach to Runway 19R following a PA46. Both aircraft sequenced by SCT. Spacing was tight however the PA46 was able to exit the runway prior to Aircraft X being over the threshold. When the PA46 was clear of the runway and the HS25 was very short final; the ASDE-X alarm went off and said to send the HS25 around. I complied and issued a go around instruction to Aircraft X; however the pilot read back; 'Roger; cleared to land;' and then touched down on the runway during his read back. I informed the HS25 that I had issued a go around because of equipment; but that the runway was clear and then told him to exit and contract Ground. Recommend a change to the ASDE-X parameters because of this incident and many others like it. Everyday at SNA aircraft are needlessly sent around when the runway is in fact clear. This is especially a problem on Runway 19L which is only 3;500 FT long and has numerous small aircraft in the pattern.
Data retrieved from NASA's ASRS site as of April 2012 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.