A publication of the National Air Traffic Controllers Association
Issue link: http://natca.uberflip.com/i/961329
(AR) procedures, which is not true. I believe many more discussion will continue on this topic. PARC Tasking ‐ Visual Separation While Established on Published Procedures – Phraseology Harmonization in North America Received a briefing from Brian Townsend (AAL) along with an updat e on the implementation of Climb Via and descend VIA in Australia. This led to a discussion about coming up with a plan to harmonize the phraseology within North America and use that plan to reopen the issue with ICAO for global changes. Many more meetings and discussions will be required. Our face - to - face meeting scheduled for April 30 and May 1 has been canceled, so our next meeting will occur June 28 - 29 at MITRE in McLean, Va . VNAV & Guidance Mode Transfer Action Team Background The PARC Navigation Wor kgroup formed the VNAV Action Team (VNAV AT) which met on Feb. 21, 2018 to discuss and address specific requests by FAA AVS ‐ 1, which were provided to the PARC via letter on October 16, 2018. The PARC Steering Group produced a Terms of Reference (ToR ) to frame the VNAV AT tasking. Highlights of the ToR are as follows: 1. Review operational considerations that mitigate operational risk to ensure aircraft can safely transition from RNAV to xLS guidance. 2. Examples of factors that may be evaluated, b ut not limited to, are: a. Pilot workload to transfer between guidance modes ; b. Potential benefits of longer final approach segments ; c. Effect of temperature adjusted intermediate segment ; d. Risks associated with dual/parallel operations Meeting invitees included representatives from Major Operators and Regional Operators, FAA Flight Standards, MITRE, NATCA, ALPA, NBAA, Honeywell and MITRE. CONCLUSIONS The PARC stands by all previous recommendations. The technical analysis is sound and t he analysis and recommendations related to aircraft performance, (e.g., lateral and vertical capture variability, TF/RF turn performance, altitude and speed constraints), as well as the design and operational considerations (e.g., minimum length of final, minimum offset of downwind to final, length of temperature compensating segment, guidance mode transition location) remain valid. The methodologies and detailed processes that led to all recommendations are fully captured in their respective reports, locat ed on the PARC Website, the links are given next to each of the reference documents in the list above. In forming the action team, leadership intentionally invited experts who were not part of the initial analyses. They were therefore unfamiliar with the recommendations and had no specific bias but brought more business and regional operational experience to the discussions. All invitees were provided with each of the above listed documents as a pre - - ‐ read approximately one month prior to the meeting.