Small Transport; Low Wing; 2 Turboprop Eng
Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 1
ATC Issue All Types; Deviation / Discrepancy - Procedural Other / Unknown
ATC Equipment / Nav Facility / Buildings; Aircraft; Equipment / Tooling
Aircraft X was approximately 15S of BET inbound when another target with the same beacon code appeared in close proximity. A collision alert was generated and continued for several minutes. Aircraft X is ADS-B equipped; and this appeared to be a conflict between the aircraft's two transponders. Repeated nuisance conflict alerts desensitize controllers and CICs/FLMs. This can lead to complacency and degradation of response time for legitimate conflicts.Nuisance conflict alerts (between a single aircraft's ADS-B and radar targets) are an ongoing problem at ZAN. Perhaps a software patch or equipment upgrade would solve this issue? I also filed a facility trouble report for this event (which includes the aircraft flight progress strip).
ZAN Front Line Manager reported of an aircraft had traffic with another target that was unidentified. FLM reported this was the same aircraft that was ADS-B equipped. FLM reported this type of nuisance conflict alert happens quite often and would like something to be done about it.