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Nct controller reports of aircraft being separated and then after they passed about a mile apart the conflict alert went off.
| Attributes | |
| ACN | 1197628 |
| Time | |
| Date | 201408 |
| Local Time Of Day | 0001-0600 |
| Place | |
| Locale Reference | NCT.TRACON |
| State Reference | CA |
| Aircraft 1 | |
| Make Model Name | Small Aircraft Low Wing 1 Eng Fixed Gear |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Cruise |
| Flight Plan | VFR |
| Aircraft 2 | |
| Make Model Name | Small Aircraft Low Wing 1 Eng Fixed Gear |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Cruise |
| Flight Plan | VFR |
| Person 1 | |
| Function | Approach |
| Qualification | Air Traffic Control Fully Certified |
| Experience | Air Traffic Control Time Certified In Pos 1 (yrs) 2.5 |
| Events | |
| Anomaly | No Specific Anomaly Occurred All Types |
Narrative:
Aircraft X was level at 4;000; aircraft Y was level at 3;500. The traffic passed; aircraft X was allowed to descend once it was well past aircraft Y. Once they were about a mile apart and on opposite courses; the conflict alert (ca) activated.when working busy traffic; erroneous conflict alert alarms are distracting and take the controller's focus away from actual traffic situations. This problem seems to have gotten worse with the implementation of fusion radar processing at nct. These situations should be documented and reviewed to identify problems in the system; and then those problems should be fixed.
Original NASA ASRS Text
Title: NCT Controller reports of aircraft being separated and then after they passed about a mile apart the conflict alert went off.
Narrative: Aircraft X was level at 4;000; Aircraft Y was level at 3;500. The traffic passed; Aircraft X was allowed to descend once it was well past Aircraft Y. Once they were about a mile apart and on opposite courses; the conflict alert (CA) activated.When working busy traffic; erroneous conflict alert alarms are distracting and take the controller's focus away from actual traffic situations. This problem seems to have gotten worse with the implementation of Fusion radar processing at NCT. These situations should be documented and reviewed to identify problems in the system; and then those problems should be fixed.
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.