July 14, 2022August 10, 2026

ELMAA Four Departure (ELMAA4.ELMAA) — Seattle-Tacoma International Airport Standard Instrument Departure

Notes

FAA Standard Instrument Departure (SID) procedure chart AL-582 for the ELMAA FOUR DEPARTURE (ELMAA4.ELMAA) at Seattle-Tacoma International Airport (KSEA/SEA), Seattle, Washington. Covers departure routes for Runways 16L, 16C, and 16R (Rwys 34L/C/R NA for noise abatement), with minimum climb gradients of 560’/NM (16L), 515’/NM (16C), and 500’/NM (16R) to 3000 feet. Includes CORVALLIS TRANSITION (ELMAA4.CVO) via YYJ R-161 and CVO R-340 to Corvallis VOR/DME, and HOQUIAM TRANSITION (ELMAA4.HQM) via HQM R-049 to Hoquiam VORTAC. Fix PEAKK at 5 DME/RADAR, ELMAA at 33 DME, top altitude assigned by ATC, FL240 on J589, FL180 on V27/J70. RADAR and DME required. Victoria VOR (YYJ 113.7), Seattle VOR (SEA 116.8), Hoquiam VORTAC (HQM 117.7), Corvallis VOR (CVO 115.4). Effective 14 JUL 2022, chart cycle NW-1, 22 FEB 2024 to 21 MAR 2024.

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As the source for federal transportation grants, the Puget Sound Regional Council was charged with developing a system to meet the growing need for commercial aviation. When the search for a second airport failed, they authorized the Port of Seattle to build the Third Runway, with a mandate to develop a noise abatement and mitigation program. In their effort to stop the Third Runway, the ACC argued over every detail of the Port's efforts--including property buyouts and sound insulation. The dispute was meant to be settled by a three member Expert Arbitration Panel. This is their final report. It finds 2-1, that the Port's program was insufficient in several respects. Despite that, funding for the Third Runway was approved by the PSRC, and the 'Port Package' program, proceeded largely unchanged. Expert Arbitration Panel's final decision finding that the Port of Seattle had not shown sufficient reduction in real on-the-ground noise impacts to satisfy noise reduction conditions required for approval of a third runway at Sea-Tac International Airport. The majority decision concluded the Port's noise abatement programs were insufficient despite being impressive in scope.

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