A publication of the National Air Traffic Controllers Association
Issue link: http://natca.uberflip.com/i/937821
• Longview (GGG) ADS-B IOC 1/18 • Longview (GGG) Fusion OSD 1/18 • Moses Lake (MWH) ADS-B IOC 1/19 • Abilene (ABI) Fusion Operational 1/23 • Rochester (RST) ADS-B/Fusion Kickoff 1/30 • Reading (RDG) ADS-B/Fusion Kickoff 1/30 • Asheville (AVL) ADS-B/Fusion Kickoff 2/1 • Great Falls (GTF) ADS-B/Fusion Kickoff 2/1 • Sioux City (SUX) Fusion Operational 1/31 • Pasco (PSC) ADS-B IOC 2/1 • Fayetteville (FAY) Fusion OSD 2/5 • Champagne (CMI) ADS-B Flight Inspection (Wx Reschedule) 2/6 • Pasco (PSC) Fusion OSD 2/7 • Longview (GGG) Fusion Operational 2/7 • Fayetteville (FAY) Fusion Operational 2/7 • Lake Charles (LCH) ADS-B/Fusion Kickoff 2/13 • Madison (MSN) ADS-B Flight Inspection 2/14 ADS-B Avionics Issues: An issue not screened by automation systems but an important assumption for future ADS-B dependent applications is the broadcast call sign of the user. ADS-B aircraft reports include this information, and automation systems compare it to the filed call sign. When a mismatch occurs a Call Sign Mismatch (CSMM) alert can be generated. The issue has been highlighted in Equip 2020 meetings since ADS-B dependent applications (CAVS, Advanced Interval Management, etc.) are dependent on this functionality. Monthly tracking continues to trend upward. The SBS Article 114 work group has recommended disabling CSMM alerts across all automation platforms. NATCA SBS continues to work with the Agency toward a more proactive approach to ADS-B avionics issues that result in position error. Though these are infrequent occurrences, the Agency's ability to respond has been hampered by a lack of resources, bureaucracy, and legal constraints. These issues occur when standards for installation or configuration within aircraft or ground systems are not met. ADS-B is a cooperative surveillance source relying on the position information determined onboard the aircraft. Multiple ATSAP reports have been filed on the known issues to date. Controllers and facilities are encouraged to report any identified events through ATSAP and any other mechanism. In order to reduce the number of safety compromising events in the NAS, an effective, efficient response mechanism is needed. The Agency has deployed additional mitigations including enhanced validation (EV) and a No Services Aircraft List (NSAL). The NSAL will likely always be needed, but its use as an effective response to issues identified is hampered by the response time. An issue identified and reported immediately still takes a minimum of one day to implement in the SBS network. The latest enhanced validation (EV) technique increased the real time responsiveness to invalid ADS-B targets within 15nm around Terminal Radar, and initial review of the operational benefit is positive. Additional EV techniques are being investigated to expand the range beyond 15nm and tighten the parameters used. EV is a real time