FAA Categorical Exclusion For Burien 250 Turn April 2018

Letter of Agreement Update to Automate a 2500 Westerly Turn for Southbound Turboprops When Seattle – Tacoma International Airport is Operating in North-Flow Between the Hours of 6 am and It:1 pm April 2018 Prepared by: United States I)epadmalt of Transportation Federal Aviation Administration Renton, WA r 4.2 Preferred Alternative The Preferred Alternative is the same as the Proposed Action, except that automatic westerly turns would be suspended and ATC would revert to coordinating twas between SEA and S46 between 10 pm and 6 am. FAA made this change in response to comments &om the City of BtrHea and other comments. Suspending the automatic westerly tun is consistent with procedures currently in place to avoid Bight noise over sensitive areas after 10 pm during north flow. FAA can accomrnodate the request to suspend automatic westerly turns after 10 pm because there are fewer departures. 4.3 No Action During north-gow, SEA ATCT will continue to coordinate with 846 to get clearance to turn southbound turboprops to a westerly heading. This coordination results in multiple westerly headings being utilized, and the planes receiving instructions to twa westerly at different points immediately after takeoff. This coordination commonly results in a 250'’ heading, but other headings may be issued if conditions warrant to maintain safe aircraft separation. [Key Westerly turned north now turboprops Burien City Boundary Study AreaFigure 14 shows the flight tracks of westerly turned southbound twboprops in north-flow eoIn 60 random days between August 2015 and January 2016. Note the variety of…

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Call to order – Roll Call – Quorum Established – Land Acknowledgement We would like to acknowledge that our Agency operates in four present-day counties, which are the traditional lands of the Coast Salish people, past and present. This acknowledgement does not take the place of authentic relationships with indigenous communities in our jurisdiction and [...]