Appendix C: Current Published Approach Procedures Affected by the Proposed Action

This appendix from a 2012 Environmental Assessment documents the published arrival flight procedures at Seattle-Tacoma International Airport that would be affected by proposed changes to how aircraft approach the airport. It includes detailed charts for routes such as the JAWBN Three Arrival and Olympia Seven Arrival, showing waypoints, altitudes, and speed restrictions for aircraft arriving from various directions including Canada and southern Washington. These procedures define the flight paths aircraft must follow when descending into Sea-Tac, directly influencing the noise experienced by communities surrounding the airport.

Notes

Greener Skies Final Environmental Assessment appendix presenting current published approach procedures for Seattle-Tacoma International Airport (KSEA) affected by the proposed arrival procedures action, dated 1 November 2012. Includes charted instrument approach procedures: JAWBN THREE ARRIVAL (JAWBN.JAWBN3, ST-582 FAA, chart 11237) with TATOOSH, VANCOUVER (YVR), and VICTORIA (YYJ) transitions, and OLYMPIA SEVEN ARRIVAL (OLM.OLM7, chart 11013) with BATTLE GROUND (BTG) and NEWBERG (UBG) transitions. Charts depict waypoints DIGGN, ALKIA, PAINE (PAE), ARVAD, FOURT, LACEE, COUGA, and fix coordinates over Seattle, Washington. Procedures involve VOR/DME navigation, radar, turbojets, prop/turboprop speed and altitude restrictions for landing north, landing south, and McChord Field (TCM).

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