NATCA Bookshelf

National Office Update: Dec. 30 - Feb. 3

A publication of the National Air Traffic Controllers Association

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is currently open for public comment collection until March 2, at which point the comments will be vetted and addressed as necessary. UAS detection and countermeasures are becoming increasingly high visibility items. Many of these discussions are sensitive in nature and will limit the amount of available information for updates. Upcoming activities: • On-Airport test Memphis County Airport Authority. • Unmanned Aircraft Safety Team Q1 meeting. • SRM panel for On-Airport UAS operations. • Bi-weekly UAS Leadership Team Meetings (ongoing). • Weekly check-in with Program Manager (ongoing). • Weekly ULT Workgroup Meeting (ongoing). • NATCA Safety and Technology department telcon. January 27-February 2, 2020 Update AUTOMATED TERMINAL PROXIMITY ALERT (ATPA) Mike Sanders (SCT) is the Article 114 Rep for ATPA. The future enhancements to ATPA processing distance on ghost for Merging Display Aid (MDA) and RNAV Z approaches are still in the works. ATPA processing formation flights is coming but release to the field is still TBD. ATPA is voluntary on the part of the individual controller at their display. Facilities are not permitted to make any portion of ATPA mandatory. If you have any question on training or adaptation, please contact me below. Mike Sanders SoCal TRACON National ATPA Lead or 913-904-6937 COMMERCIAL SPACE Paul Behan is the Article 114 Commercial Space Rep. Acceptable Level of Risk (ALR) - The ALR implementation team meets every two weeks. The Jan. 7 meeting discussion revolved around the Transitional Hazard Area (THA) "crossing courses" rule with respect to wind corrections. The discrepancy is the difference between a course and a heading, and that the 45-degree angular crossing courses restriction already accounts for wind and that controllers do not need to account for wind when issuing a radar vector (magnetic heading) in compliance with this rule. However, winds aloft can often exceed 100kts which may result in controllers issuing a

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